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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_DiversifiedFinancialServicesMember_lbl" xml:lang="en-US">Diversified Financial Services [Member]</link:label>
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InvestmentTypeAxis_lbl" xml:lang="en-US">Investment Type [Axis]</link:label>
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_CitigroupIncMember_lbl" xml:lang="en-US">Citigroup Inc [Member]</link:label>
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010428Member_lbl" xml:lang="en-US">Basic Materials | Variable Annuity</link:label>
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_BasicMaterialsVariableAnnuitySampP500MaterialsIndexMember_lbl" xml:lang="en-US">S&amp;P 500 Materials Index, Basic Materials</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_MiningMember" xlink:label="rvt_MiningMember" />
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_MiningMember_lbl" xml:lang="en-US">Mining [Member]</link:label>
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      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ChemicalsMember" xlink:to="rvt_ChemicalsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ChemicalsMember_lbl" xml:lang="en-US">Chemicals [Member]</link:label>
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_BuildingMaterialsMember_lbl" xml:lang="en-US">Building Materials [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_IronampSteelMember" xlink:label="rvt_IronampSteelMember" />
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_IronampSteelMember_lbl" xml:lang="en-US">Ironamp Steel [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_BiotechnologyMember" xlink:label="rvt_BiotechnologyMember" />
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_BiotechnologyMember_lbl" xml:lang="en-US">Biotechnology [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ForestProductsampPaperMember" xlink:label="rvt_ForestProductsampPaperMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ForestProductsampPaperMember" xlink:to="rvt_ForestProductsampPaperMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ForestProductsampPaperMember_lbl" xml:lang="en-US">Forest Productsamp Paper [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_OtherMember" xlink:label="rvt_OtherMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_OtherMember" xlink:to="rvt_OtherMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_OtherMember_lbl" xml:lang="en-US">Other [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_LindeplcMember" xlink:label="rvt_LindeplcMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_LindeplcMember" xlink:to="rvt_LindeplcMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_LindeplcMember_lbl" xml:lang="en-US">Lindeplc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_NewmontCorpMember" xlink:label="rvt_NewmontCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_NewmontCorpMember" xlink:to="rvt_NewmontCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_NewmontCorpMember_lbl" xml:lang="en-US">Newmont Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_FreeportMcMoRanIncMember" xlink:label="rvt_FreeportMcMoRanIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_FreeportMcMoRanIncMember" xlink:to="rvt_FreeportMcMoRanIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_FreeportMcMoRanIncMember_lbl" xml:lang="en-US">Freeport Mc Mo Ran Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_SherwinWilliamsCoMember" xlink:label="rvt_SherwinWilliamsCoMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_SherwinWilliamsCoMember" xlink:to="rvt_SherwinWilliamsCoMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_SherwinWilliamsCoMember_lbl" xml:lang="en-US">Sherwin Williams Co [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_EcolabIncMember" xlink:label="rvt_EcolabIncMember" />
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_EcolabIncMember_lbl" xml:lang="en-US">Ecolab Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_AirProductsandChemicalsIncMember" xlink:label="rvt_AirProductsandChemicalsIncMember" />
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      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_CortevaIncMember" xlink:label="rvt_CortevaIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_CortevaIncMember" xlink:to="rvt_CortevaIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_CortevaIncMember_lbl" xml:lang="en-US">Corteva Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_MartinMariettaMaterialsIncMember" xlink:label="rvt_MartinMariettaMaterialsIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_MartinMariettaMaterialsIncMember" xlink:to="rvt_MartinMariettaMaterialsIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_MartinMariettaMaterialsIncMember_lbl" xml:lang="en-US">Martin Marietta Materials Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_VulcanMaterialsCoMember" xlink:label="rvt_VulcanMaterialsCoMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_VulcanMaterialsCoMember" xlink:to="rvt_VulcanMaterialsCoMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_VulcanMaterialsCoMember_lbl" xml:lang="en-US">Vulcan Materials Co [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_NucorCorpMember" xlink:label="rvt_NucorCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_NucorCorpMember" xlink:to="rvt_NucorCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_NucorCorpMember_lbl" xml:lang="en-US">Nucor Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010380Member" xlink:label="rvt_C000010380Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010380Member" xlink:to="rvt_C000010380Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010380Member_lbl" xml:lang="en-US">Biotechnology Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_BiotechnologyFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_BiotechnologyFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_BiotechnologyFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_BiotechnologyFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_BiotechnologyFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, Biotechnology Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_BiotechnologyFundVariableAnnuitySampP500HealthCareIndexMember" xlink:label="rvt_BiotechnologyFundVariableAnnuitySampP500HealthCareIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_BiotechnologyFundVariableAnnuitySampP500HealthCareIndexMember" xlink:to="rvt_BiotechnologyFundVariableAnnuitySampP500HealthCareIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_BiotechnologyFundVariableAnnuitySampP500HealthCareIndexMember_lbl" xml:lang="en-US">S&amp;P 500 Health Care Index, Biotechnology Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_PharmaceuticalsMember" xlink:label="rvt_PharmaceuticalsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_PharmaceuticalsMember" xlink:to="rvt_PharmaceuticalsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_PharmaceuticalsMember_lbl" xml:lang="en-US">Pharmaceuticals [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_HealthcareProductsMember" xlink:label="rvt_HealthcareProductsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_HealthcareProductsMember" xlink:to="rvt_HealthcareProductsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_HealthcareProductsMember_lbl" xml:lang="en-US">Healthcare Products [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_HealthcareServicesMember" xlink:label="rvt_HealthcareServicesMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_HealthcareServicesMember" xlink:to="rvt_HealthcareServicesMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_HealthcareServicesMember_lbl" xml:lang="en-US">Healthcare Services [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_AbbVieIncMember" xlink:label="rvt_AbbVieIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_AbbVieIncMember" xlink:to="rvt_AbbVieIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_AbbVieIncMember_lbl" xml:lang="en-US">Abb Vie Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_AmgenIncMember" xlink:label="rvt_AmgenIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_AmgenIncMember" xlink:to="rvt_AmgenIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_AmgenIncMember_lbl" xml:lang="en-US">Amgen Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_GileadSciencesIncMember" xlink:label="rvt_GileadSciencesIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_GileadSciencesIncMember" xlink:to="rvt_GileadSciencesIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_GileadSciencesIncMember_lbl" xml:lang="en-US">Gilead Sciences Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_VertexPharmaceuticalsIncMember" xlink:label="rvt_VertexPharmaceuticalsIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_VertexPharmaceuticalsIncMember" xlink:to="rvt_VertexPharmaceuticalsIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_VertexPharmaceuticalsIncMember_lbl" xml:lang="en-US">Vertex Pharmaceuticals Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_RegeneronPharmaceuticalsIncMember" xlink:label="rvt_RegeneronPharmaceuticalsIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_RegeneronPharmaceuticalsIncMember" xlink:to="rvt_RegeneronPharmaceuticalsIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_RegeneronPharmaceuticalsIncMember_lbl" xml:lang="en-US">Regeneron Pharmaceuticals Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_AlnylamPharmaceuticalsIncMember" xlink:label="rvt_AlnylamPharmaceuticalsIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_AlnylamPharmaceuticalsIncMember" xlink:to="rvt_AlnylamPharmaceuticalsIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_AlnylamPharmaceuticalsIncMember_lbl" xml:lang="en-US">Alnylam Pharmaceuticals Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_InsmedIncMember" xlink:label="rvt_InsmedIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_InsmedIncMember" xlink:to="rvt_InsmedIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_InsmedIncMember_lbl" xml:lang="en-US">Insmed Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_NateraIncMember" xlink:label="rvt_NateraIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_NateraIncMember" xlink:to="rvt_NateraIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_NateraIncMember_lbl" xml:lang="en-US">Natera Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_AstraZenecaplcADRMember" xlink:label="rvt_AstraZenecaplcADRMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_AstraZenecaplcADRMember" xlink:to="rvt_AstraZenecaplcADRMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_AstraZenecaplcADRMember_lbl" xml:lang="en-US">Astra Zenecaplc A D R [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_BiogenIncMember" xlink:label="rvt_BiogenIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_BiogenIncMember" xlink:to="rvt_BiogenIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_BiogenIncMember_lbl" xml:lang="en-US">Biogen Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010381Member" xlink:label="rvt_C000010381Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010381Member" xlink:to="rvt_C000010381Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010381Member_lbl" xml:lang="en-US">Consumer Products Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ConsumerProductsFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_ConsumerProductsFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ConsumerProductsFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_ConsumerProductsFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ConsumerProductsFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, Consumer Products Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ConsumerProductsFundVariableAnnuitySampP500ConsumerStaplesIndexMember" xlink:label="rvt_ConsumerProductsFundVariableAnnuitySampP500ConsumerStaplesIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ConsumerProductsFundVariableAnnuitySampP500ConsumerStaplesIndexMember" xlink:to="rvt_ConsumerProductsFundVariableAnnuitySampP500ConsumerStaplesIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ConsumerProductsFundVariableAnnuitySampP500ConsumerStaplesIndexMember_lbl" xml:lang="en-US">S&amp;P 500 Consumer Staples Index, Consumer Products Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_FoodMember" xlink:label="rvt_FoodMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_FoodMember" xlink:to="rvt_FoodMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_FoodMember_lbl" xml:lang="en-US">Food [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_BeveragesMember" xlink:label="rvt_BeveragesMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_BeveragesMember" xlink:to="rvt_BeveragesMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_BeveragesMember_lbl" xml:lang="en-US">Beverages [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_CosmeticsampPersonalCareMember" xlink:label="rvt_CosmeticsampPersonalCareMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_CosmeticsampPersonalCareMember" xlink:to="rvt_CosmeticsampPersonalCareMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_CosmeticsampPersonalCareMember_lbl" xml:lang="en-US">Cosmeticsamp Personal Care [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_AgricultureMember" xlink:label="rvt_AgricultureMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_AgricultureMember" xlink:to="rvt_AgricultureMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_AgricultureMember_lbl" xml:lang="en-US">Agriculture [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_HouseholdProductsampHousewaresMember" xlink:label="rvt_HouseholdProductsampHousewaresMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_HouseholdProductsampHousewaresMember" xlink:to="rvt_HouseholdProductsampHousewaresMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_HouseholdProductsampHousewaresMember_lbl" xml:lang="en-US">Household Productsamp Housewares [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetailMember" xlink:label="us-gaap_RetailMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RetailMember" xlink:to="us-gaap_RetailMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RetailMember_lbl" xml:lang="en-US">Retail [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_InternetMember" xlink:label="rvt_InternetMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_InternetMember" xlink:to="rvt_InternetMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_InternetMember_lbl" xml:lang="en-US">Internet [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ProcterampGambleCoMember" xlink:label="rvt_ProcterampGambleCoMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ProcterampGambleCoMember" xlink:to="rvt_ProcterampGambleCoMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ProcterampGambleCoMember_lbl" xml:lang="en-US">Procteramp Gamble Co [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_PhilipMorrisInternationalIncMember" xlink:label="rvt_PhilipMorrisInternationalIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_PhilipMorrisInternationalIncMember" xlink:to="rvt_PhilipMorrisInternationalIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_PhilipMorrisInternationalIncMember_lbl" xml:lang="en-US">Philip Morris International Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_CocaColaCoMember" xlink:label="rvt_CocaColaCoMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_CocaColaCoMember" xlink:to="rvt_CocaColaCoMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_CocaColaCoMember_lbl" xml:lang="en-US">Coca Cola Co [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_PepsiCoIncMember" xlink:label="rvt_PepsiCoIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_PepsiCoIncMember" xlink:to="rvt_PepsiCoIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_PepsiCoIncMember_lbl" xml:lang="en-US">Pepsi Co Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_AltriaGroupIncMember" xlink:label="rvt_AltriaGroupIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_AltriaGroupIncMember" xlink:to="rvt_AltriaGroupIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_AltriaGroupIncMember_lbl" xml:lang="en-US">Altria Group Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_MondelezInternationalInc8212ClassAMember" xlink:label="rvt_MondelezInternationalInc8212ClassAMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_MondelezInternationalInc8212ClassAMember" xlink:to="rvt_MondelezInternationalInc8212ClassAMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_MondelezInternationalInc8212ClassAMember_lbl" xml:lang="en-US">Mondelez International Inc 8212 Class A [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ColgatePalmoliveCoMember" xlink:label="rvt_ColgatePalmoliveCoMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ColgatePalmoliveCoMember" xlink:to="rvt_ColgatePalmoliveCoMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ColgatePalmoliveCoMember_lbl" xml:lang="en-US">Colgate Palmolive Co [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_MonsterBeverageCorpMember" xlink:label="rvt_MonsterBeverageCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_MonsterBeverageCorpMember" xlink:to="rvt_MonsterBeverageCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_MonsterBeverageCorpMember_lbl" xml:lang="en-US">Monster Beverage Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_KrogerCoMember" xlink:label="rvt_KrogerCoMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_KrogerCoMember" xlink:to="rvt_KrogerCoMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_KrogerCoMember_lbl" xml:lang="en-US">Kroger Co [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_HersheyCoMember" xlink:label="rvt_HersheyCoMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_HersheyCoMember" xlink:to="rvt_HersheyCoMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_HersheyCoMember_lbl" xml:lang="en-US">Hershey Co [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010382Member" xlink:label="rvt_C000010382Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010382Member" xlink:to="rvt_C000010382Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010382Member_lbl" xml:lang="en-US">Electronics Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ElectronicsFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_ElectronicsFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ElectronicsFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_ElectronicsFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ElectronicsFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, Electronics Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ElectronicsFundVariableAnnuitySampP500InformationTechnologyIndexMember" xlink:label="rvt_ElectronicsFundVariableAnnuitySampP500InformationTechnologyIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ElectronicsFundVariableAnnuitySampP500InformationTechnologyIndexMember" xlink:to="rvt_ElectronicsFundVariableAnnuitySampP500InformationTechnologyIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ElectronicsFundVariableAnnuitySampP500InformationTechnologyIndexMember_lbl" xml:lang="en-US">S&amp;P 500 Information Technology Index, Electronics Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_SemiconductorsMember" xlink:label="rvt_SemiconductorsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_SemiconductorsMember" xlink:to="rvt_SemiconductorsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_SemiconductorsMember_lbl" xml:lang="en-US">Semiconductors [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_EnergyAlternateSourcesMember" xlink:label="rvt_EnergyAlternateSourcesMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_EnergyAlternateSourcesMember" xlink:to="rvt_EnergyAlternateSourcesMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_EnergyAlternateSourcesMember_lbl" xml:lang="en-US">Energy Alternate Sources [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_TelecommunicationsMember" xlink:label="rvt_TelecommunicationsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_TelecommunicationsMember" xlink:to="rvt_TelecommunicationsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_TelecommunicationsMember_lbl" xml:lang="en-US">Telecommunications [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_MiscellaneousManufacturingMember" xlink:label="rvt_MiscellaneousManufacturingMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_MiscellaneousManufacturingMember" xlink:to="rvt_MiscellaneousManufacturingMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_MiscellaneousManufacturingMember_lbl" xml:lang="en-US">Miscellaneous Manufacturing [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ComputersMember" xlink:label="rvt_ComputersMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ComputersMember" xlink:to="rvt_ComputersMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ComputersMember_lbl" xml:lang="en-US">Computers [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ElectricalComponentsampEquipmentMember" xlink:label="rvt_ElectricalComponentsampEquipmentMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ElectricalComponentsampEquipmentMember" xlink:to="rvt_ElectricalComponentsampEquipmentMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ElectricalComponentsampEquipmentMember_lbl" xml:lang="en-US">Electrical Componentsamp Equipment [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_NVIDIACorpMember" xlink:label="rvt_NVIDIACorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_NVIDIACorpMember" xlink:to="rvt_NVIDIACorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_NVIDIACorpMember_lbl" xml:lang="en-US">N V I D I A Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_BroadcomIncMember" xlink:label="rvt_BroadcomIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_BroadcomIncMember" xlink:to="rvt_BroadcomIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_BroadcomIncMember_lbl" xml:lang="en-US">Broadcom Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_MicronTechnologyIncMember" xlink:label="rvt_MicronTechnologyIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_MicronTechnologyIncMember" xlink:to="rvt_MicronTechnologyIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_MicronTechnologyIncMember_lbl" xml:lang="en-US">Micron Technology Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_AdvancedMicroDevicesIncMember" xlink:label="rvt_AdvancedMicroDevicesIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_AdvancedMicroDevicesIncMember" xlink:to="rvt_AdvancedMicroDevicesIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_AdvancedMicroDevicesIncMember_lbl" xml:lang="en-US">Advanced Micro Devices Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_LamResearchCorpMember" xlink:label="rvt_LamResearchCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_LamResearchCorpMember" xlink:to="rvt_LamResearchCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_LamResearchCorpMember_lbl" xml:lang="en-US">Lam Research Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_AppliedMaterialsIncMember" xlink:label="rvt_AppliedMaterialsIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_AppliedMaterialsIncMember" xlink:to="rvt_AppliedMaterialsIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_AppliedMaterialsIncMember_lbl" xml:lang="en-US">Applied Materials Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_QUALCOMMIncMember" xlink:label="rvt_QUALCOMMIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_QUALCOMMIncMember" xlink:to="rvt_QUALCOMMIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_QUALCOMMIncMember_lbl" xml:lang="en-US">Q U A L C O M M Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_KLACorpMember" xlink:label="rvt_KLACorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_KLACorpMember" xlink:to="rvt_KLACorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_KLACorpMember_lbl" xml:lang="en-US">K L A Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_TexasInstrumentsIncMember" xlink:label="rvt_TexasInstrumentsIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_TexasInstrumentsIncMember" xlink:to="rvt_TexasInstrumentsIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_TexasInstrumentsIncMember_lbl" xml:lang="en-US">Texas Instruments Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_IntelCorpMember" xlink:label="rvt_IntelCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_IntelCorpMember" xlink:to="rvt_IntelCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_IntelCorpMember_lbl" xml:lang="en-US">Intel Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010383Member" xlink:label="rvt_C000010383Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010383Member" xlink:to="rvt_C000010383Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010383Member_lbl" xml:lang="en-US">Energy Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_EnergyFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_EnergyFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_EnergyFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_EnergyFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_EnergyFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, Energy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_EnergyFundVariableAnnuitySampP500EnergyIndexMember" xlink:label="rvt_EnergyFundVariableAnnuitySampP500EnergyIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_EnergyFundVariableAnnuitySampP500EnergyIndexMember" xlink:to="rvt_EnergyFundVariableAnnuitySampP500EnergyIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_EnergyFundVariableAnnuitySampP500EnergyIndexMember_lbl" xml:lang="en-US">S&amp;P 500 Energy Index, Energy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_OilampGasMember" xlink:label="rvt_OilampGasMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_OilampGasMember" xlink:to="rvt_OilampGasMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_OilampGasMember_lbl" xml:lang="en-US">Oilamp Gas [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PipelinesMember" xlink:label="us-gaap_PipelinesMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PipelinesMember" xlink:to="us-gaap_PipelinesMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PipelinesMember_lbl" xml:lang="en-US">Pipelines [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_OilampGasServicesMember" xlink:label="rvt_OilampGasServicesMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_OilampGasServicesMember" xlink:to="rvt_OilampGasServicesMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_OilampGasServicesMember_lbl" xml:lang="en-US">Oilamp Gas Services [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_CoalMember" xlink:label="rvt_CoalMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_CoalMember" xlink:to="rvt_CoalMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_CoalMember_lbl" xml:lang="en-US">Coal [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_TransportationMember" xlink:label="rvt_TransportationMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_TransportationMember" xlink:to="rvt_TransportationMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_TransportationMember_lbl" xml:lang="en-US">Transportation [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ExxonMobilCorpMember" xlink:label="rvt_ExxonMobilCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ExxonMobilCorpMember" xlink:to="rvt_ExxonMobilCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ExxonMobilCorpMember_lbl" xml:lang="en-US">Exxon Mobil Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ChevronCorpMember" xlink:label="rvt_ChevronCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ChevronCorpMember" xlink:to="rvt_ChevronCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ChevronCorpMember_lbl" xml:lang="en-US">Chevron Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ConocoPhillipsMember" xlink:label="rvt_ConocoPhillipsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ConocoPhillipsMember" xlink:to="rvt_ConocoPhillipsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ConocoPhillipsMember_lbl" xml:lang="en-US">Conoco Phillips [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_WilliamsCompaniesIncMember" xlink:label="rvt_WilliamsCompaniesIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_WilliamsCompaniesIncMember" xlink:to="rvt_WilliamsCompaniesIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_WilliamsCompaniesIncMember_lbl" xml:lang="en-US">Williams Companies Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_EOGResourcesIncMember" xlink:label="rvt_EOGResourcesIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_EOGResourcesIncMember" xlink:to="rvt_EOGResourcesIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_EOGResourcesIncMember_lbl" xml:lang="en-US">E O G Resources Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_KinderMorganIncMember" xlink:label="rvt_KinderMorganIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_KinderMorganIncMember" xlink:to="rvt_KinderMorganIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_KinderMorganIncMember_lbl" xml:lang="en-US">Kinder Morgan Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_SLBLtdMember" xlink:label="rvt_SLBLtdMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_SLBLtdMember" xlink:to="rvt_SLBLtdMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_SLBLtdMember_lbl" xml:lang="en-US">S L B Ltd [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ValeroEnergyCorpMember" xlink:label="rvt_ValeroEnergyCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ValeroEnergyCorpMember" xlink:to="rvt_ValeroEnergyCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ValeroEnergyCorpMember_lbl" xml:lang="en-US">Valero Energy Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_Phillips66Member" xlink:label="rvt_Phillips66Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_Phillips66Member" xlink:to="rvt_Phillips66Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_Phillips66Member_lbl" xml:lang="en-US">Phillips 66 [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ONEOKIncMember" xlink:label="rvt_ONEOKIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ONEOKIncMember" xlink:to="rvt_ONEOKIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ONEOKIncMember_lbl" xml:lang="en-US">O N E O K Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010384Member" xlink:label="rvt_C000010384Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010384Member" xlink:to="rvt_C000010384Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010384Member_lbl" xml:lang="en-US">Energy Services Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_EnergyServicesFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_EnergyServicesFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_EnergyServicesFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_EnergyServicesFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_EnergyServicesFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, Energy Services Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_EnergyServicesFundVariableAnnuitySampP500EnergyIndexMember" xlink:label="rvt_EnergyServicesFundVariableAnnuitySampP500EnergyIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_EnergyServicesFundVariableAnnuitySampP500EnergyIndexMember" xlink:to="rvt_EnergyServicesFundVariableAnnuitySampP500EnergyIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_EnergyServicesFundVariableAnnuitySampP500EnergyIndexMember_lbl" xml:lang="en-US">S&amp;P 500 Energy Index, Energy Services Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_MetalFabricateampHardwareMember" xlink:label="rvt_MetalFabricateampHardwareMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_MetalFabricateampHardwareMember" xlink:to="rvt_MetalFabricateampHardwareMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_MetalFabricateampHardwareMember_lbl" xml:lang="en-US">Metal Fabricateamp Hardware [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_MachineryDiversifiedMember" xlink:label="rvt_MachineryDiversifiedMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_MachineryDiversifiedMember" xlink:to="rvt_MachineryDiversifiedMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_MachineryDiversifiedMember_lbl" xml:lang="en-US">Machinery Diversified [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_BakerHughesCoMember" xlink:label="rvt_BakerHughesCoMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_BakerHughesCoMember" xlink:to="rvt_BakerHughesCoMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_BakerHughesCoMember_lbl" xml:lang="en-US">Baker Hughes Co [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_HalliburtonCoMember" xlink:label="rvt_HalliburtonCoMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_HalliburtonCoMember" xlink:to="rvt_HalliburtonCoMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_HalliburtonCoMember_lbl" xml:lang="en-US">Halliburton Co [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_TechnipFMCplcMember" xlink:label="rvt_TechnipFMCplcMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_TechnipFMCplcMember" xlink:to="rvt_TechnipFMCplcMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_TechnipFMCplcMember_lbl" xml:lang="en-US">Technip F M Cplc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_WeatherfordInternationalplcMember" xlink:label="rvt_WeatherfordInternationalplcMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_WeatherfordInternationalplcMember" xlink:to="rvt_WeatherfordInternationalplcMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_WeatherfordInternationalplcMember_lbl" xml:lang="en-US">Weatherford Internationalplc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_NOVIncMember" xlink:label="rvt_NOVIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_NOVIncMember" xlink:to="rvt_NOVIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_NOVIncMember_lbl" xml:lang="en-US">N O V Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ArchrockIncMember" xlink:label="rvt_ArchrockIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ArchrockIncMember" xlink:to="rvt_ArchrockIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ArchrockIncMember_lbl" xml:lang="en-US">Archrock Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_TransoceanLtdMember" xlink:label="rvt_TransoceanLtdMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_TransoceanLtdMember" xlink:to="rvt_TransoceanLtdMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_TransoceanLtdMember_lbl" xml:lang="en-US">Transocean Ltd [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_TenarisSAADRMember" xlink:label="rvt_TenarisSAADRMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_TenarisSAADRMember" xlink:to="rvt_TenarisSAADRMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_TenarisSAADRMember_lbl" xml:lang="en-US">Tenaris S A A D R [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_CactusInc8212ClassAMember" xlink:label="rvt_CactusInc8212ClassAMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_CactusInc8212ClassAMember" xlink:to="rvt_CactusInc8212ClassAMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_CactusInc8212ClassAMember_lbl" xml:lang="en-US">Cactus Inc 8212 Class A [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010385Member" xlink:label="rvt_C000010385Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010385Member" xlink:to="rvt_C000010385Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010385Member_lbl" xml:lang="en-US">Financial Services Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_FinancialServicesFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_FinancialServicesFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_FinancialServicesFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_FinancialServicesFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_FinancialServicesFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, Financial Services Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_FinancialServicesFundVariableAnnuitySampP500FinancialsIndexMember" xlink:label="rvt_FinancialServicesFundVariableAnnuitySampP500FinancialsIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_FinancialServicesFundVariableAnnuitySampP500FinancialsIndexMember" xlink:to="rvt_FinancialServicesFundVariableAnnuitySampP500FinancialsIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_FinancialServicesFundVariableAnnuitySampP500FinancialsIndexMember_lbl" xml:lang="en-US">S&amp;P 500 Financials Index, Financial Services Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_InsuranceMember" xlink:label="rvt_InsuranceMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_InsuranceMember" xlink:to="rvt_InsuranceMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_InsuranceMember_lbl" xml:lang="en-US">Insurance [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_REITsMember" xlink:label="rvt_REITsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_REITsMember" xlink:to="rvt_REITsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_REITsMember_lbl" xml:lang="en-US">R E I Ts [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_CommercialServicesMember" xlink:label="rvt_CommercialServicesMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_CommercialServicesMember" xlink:to="rvt_CommercialServicesMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_CommercialServicesMember_lbl" xml:lang="en-US">Commercial Services [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_PrivateEquityMember" xlink:label="rvt_PrivateEquityMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_PrivateEquityMember" xlink:to="rvt_PrivateEquityMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_PrivateEquityMember_lbl" xml:lang="en-US">Private Equity [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_SoftwareMember" xlink:label="rvt_SoftwareMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_SoftwareMember" xlink:to="rvt_SoftwareMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_SoftwareMember_lbl" xml:lang="en-US">Software [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_BerkshireHathawayInc8212ClassBMember" xlink:label="rvt_BerkshireHathawayInc8212ClassBMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_BerkshireHathawayInc8212ClassBMember" xlink:to="rvt_BerkshireHathawayInc8212ClassBMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_BerkshireHathawayInc8212ClassBMember_lbl" xml:lang="en-US">Berkshire Hathaway Inc 8212 Class B [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_VisaInc8212ClassAMember" xlink:label="rvt_VisaInc8212ClassAMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_VisaInc8212ClassAMember" xlink:to="rvt_VisaInc8212ClassAMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_VisaInc8212ClassAMember_lbl" xml:lang="en-US">Visa Inc 8212 Class A [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_MastercardInc8212ClassAMember" xlink:label="rvt_MastercardInc8212ClassAMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_MastercardInc8212ClassAMember" xlink:to="rvt_MastercardInc8212ClassAMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_MastercardInc8212ClassAMember_lbl" xml:lang="en-US">Mastercard Inc 8212 Class A [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_GoldmanSachsGroupIncMember" xlink:label="rvt_GoldmanSachsGroupIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_GoldmanSachsGroupIncMember" xlink:to="rvt_GoldmanSachsGroupIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_GoldmanSachsGroupIncMember_lbl" xml:lang="en-US">Goldman Sachs Group Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_MorganStanleyMember" xlink:label="rvt_MorganStanleyMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_MorganStanleyMember" xlink:to="rvt_MorganStanleyMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_MorganStanleyMember_lbl" xml:lang="en-US">Morgan Stanley [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_BlackstoneInc8212ClassAMember" xlink:label="rvt_BlackstoneInc8212ClassAMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_BlackstoneInc8212ClassAMember" xlink:to="rvt_BlackstoneInc8212ClassAMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_BlackstoneInc8212ClassAMember_lbl" xml:lang="en-US">Blackstone Inc 8212 Class A [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010386Member" xlink:label="rvt_C000010386Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010386Member" xlink:to="rvt_C000010386Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010386Member_lbl" xml:lang="en-US">Health Care Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_HealthCareFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_HealthCareFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_HealthCareFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_HealthCareFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_HealthCareFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, Health Care Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_HealthCareFundVariableAnnuitySampP500HealthCareIndexMember" xlink:label="rvt_HealthCareFundVariableAnnuitySampP500HealthCareIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_HealthCareFundVariableAnnuitySampP500HealthCareIndexMember" xlink:to="rvt_HealthCareFundVariableAnnuitySampP500HealthCareIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_HealthCareFundVariableAnnuitySampP500HealthCareIndexMember_lbl" xml:lang="en-US">S&amp;P 500 Health Care Index, Health Care Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_EliLillyampCoMember" xlink:label="rvt_EliLillyampCoMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_EliLillyampCoMember" xlink:to="rvt_EliLillyampCoMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_EliLillyampCoMember_lbl" xml:lang="en-US">Eli Lillyamp Co [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_JohnsonampJohnsonMember" xlink:label="rvt_JohnsonampJohnsonMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_JohnsonampJohnsonMember" xlink:to="rvt_JohnsonampJohnsonMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_JohnsonampJohnsonMember_lbl" xml:lang="en-US">Johnsonamp Johnson [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_UnitedHealthGroupIncMember" xlink:label="rvt_UnitedHealthGroupIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_UnitedHealthGroupIncMember" xlink:to="rvt_UnitedHealthGroupIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_UnitedHealthGroupIncMember_lbl" xml:lang="en-US">United Health Group Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_MerckampCompanyIncMember" xlink:label="rvt_MerckampCompanyIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_MerckampCompanyIncMember" xlink:to="rvt_MerckampCompanyIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_MerckampCompanyIncMember_lbl" xml:lang="en-US">Merckamp Company Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ThermoFisherScientificIncMember" xlink:label="rvt_ThermoFisherScientificIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ThermoFisherScientificIncMember" xlink:to="rvt_ThermoFisherScientificIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ThermoFisherScientificIncMember_lbl" xml:lang="en-US">Thermo Fisher Scientific Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_AbbottLaboratoriesMember" xlink:label="rvt_AbbottLaboratoriesMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_AbbottLaboratoriesMember" xlink:to="rvt_AbbottLaboratoriesMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_AbbottLaboratoriesMember_lbl" xml:lang="en-US">Abbott Laboratories [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_IntuitiveSurgicalIncMember" xlink:label="rvt_IntuitiveSurgicalIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_IntuitiveSurgicalIncMember" xlink:to="rvt_IntuitiveSurgicalIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_IntuitiveSurgicalIncMember_lbl" xml:lang="en-US">Intuitive Surgical Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010387Member" xlink:label="rvt_C000010387Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010387Member" xlink:to="rvt_C000010387Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010387Member_lbl" xml:lang="en-US">Internet Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_InternetFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_InternetFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_InternetFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_InternetFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_InternetFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, Internet Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_InternetFundVariableAnnuitySampP500InformationTechnologyIndexMember" xlink:label="rvt_InternetFundVariableAnnuitySampP500InformationTechnologyIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_InternetFundVariableAnnuitySampP500InformationTechnologyIndexMember" xlink:to="rvt_InternetFundVariableAnnuitySampP500InformationTechnologyIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_InternetFundVariableAnnuitySampP500InformationTechnologyIndexMember_lbl" xml:lang="en-US">S&amp;P 500 Information Technology Index, Internet Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RealEstateMember" xlink:label="us-gaap_RealEstateMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateMember" xlink:to="us-gaap_RealEstateMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateMember_lbl" xml:lang="en-US">Real Estate [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EntertainmentMember" xlink:label="us-gaap_EntertainmentMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EntertainmentMember" xlink:to="us-gaap_EntertainmentMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EntertainmentMember_lbl" xml:lang="en-US">Entertainment [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_AlphabetInc8212ClassAMember" xlink:label="rvt_AlphabetInc8212ClassAMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_AlphabetInc8212ClassAMember" xlink:to="rvt_AlphabetInc8212ClassAMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_AlphabetInc8212ClassAMember_lbl" xml:lang="en-US">Alphabet Inc 8212 Class A [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_AmazoncomIncMember" xlink:label="rvt_AmazoncomIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_AmazoncomIncMember" xlink:to="rvt_AmazoncomIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_AmazoncomIncMember_lbl" xml:lang="en-US">Amazoncom Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_MetaPlatformsInc8212ClassAMember" xlink:label="rvt_MetaPlatformsInc8212ClassAMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_MetaPlatformsInc8212ClassAMember" xlink:to="rvt_MetaPlatformsInc8212ClassAMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_MetaPlatformsInc8212ClassAMember_lbl" xml:lang="en-US">Meta Platforms Inc 8212 Class A [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_NetflixIncMember" xlink:label="rvt_NetflixIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_NetflixIncMember" xlink:to="rvt_NetflixIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_NetflixIncMember_lbl" xml:lang="en-US">Netflix Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_CiscoSystemsIncMember" xlink:label="rvt_CiscoSystemsIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_CiscoSystemsIncMember" xlink:to="rvt_CiscoSystemsIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_CiscoSystemsIncMember_lbl" xml:lang="en-US">Cisco Systems Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_SalesforceIncMember" xlink:label="rvt_SalesforceIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_SalesforceIncMember" xlink:to="rvt_SalesforceIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_SalesforceIncMember_lbl" xml:lang="en-US">Salesforce Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_BookingHoldingsIncMember" xlink:label="rvt_BookingHoldingsIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_BookingHoldingsIncMember" xlink:to="rvt_BookingHoldingsIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_BookingHoldingsIncMember_lbl" xml:lang="en-US">Booking Holdings Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_UberTechnologiesIncMember" xlink:label="rvt_UberTechnologiesIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_UberTechnologiesIncMember" xlink:to="rvt_UberTechnologiesIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_UberTechnologiesIncMember_lbl" xml:lang="en-US">Uber Technologies Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_AdobeIncMember" xlink:label="rvt_AdobeIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_AdobeIncMember" xlink:to="rvt_AdobeIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_AdobeIncMember_lbl" xml:lang="en-US">Adobe Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_AristaNetworksIncMember" xlink:label="rvt_AristaNetworksIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_AristaNetworksIncMember" xlink:to="rvt_AristaNetworksIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_AristaNetworksIncMember_lbl" xml:lang="en-US">Arista Networks Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010388Member" xlink:label="rvt_C000010388Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010388Member" xlink:to="rvt_C000010388Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010388Member_lbl" xml:lang="en-US">Leisure Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_LeisureFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_LeisureFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_LeisureFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_LeisureFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_LeisureFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, Leisure Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_LeisureFundVariableAnnuitySampP500ConsumerDiscretionaryIndexMember" xlink:label="rvt_LeisureFundVariableAnnuitySampP500ConsumerDiscretionaryIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_LeisureFundVariableAnnuitySampP500ConsumerDiscretionaryIndexMember" xlink:to="rvt_LeisureFundVariableAnnuitySampP500ConsumerDiscretionaryIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_LeisureFundVariableAnnuitySampP500ConsumerDiscretionaryIndexMember_lbl" xml:lang="en-US">S&amp;P 500 Consumer Discretionary Index, Leisure Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_MediaMember" xlink:label="rvt_MediaMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_MediaMember" xlink:to="rvt_MediaMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_MediaMember_lbl" xml:lang="en-US">Media [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_LodgingMember" xlink:label="rvt_LodgingMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_LodgingMember" xlink:to="rvt_LodgingMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_LodgingMember_lbl" xml:lang="en-US">Lodging [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_LeisureTimeMember" xlink:label="rvt_LeisureTimeMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_LeisureTimeMember" xlink:to="rvt_LeisureTimeMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_LeisureTimeMember_lbl" xml:lang="en-US">Leisure Time [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_McDonaldsCorpMember" xlink:label="rvt_McDonaldsCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_McDonaldsCorpMember" xlink:to="rvt_McDonaldsCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_McDonaldsCorpMember_lbl" xml:lang="en-US">Mc Donalds Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_WaltDisneyCoMember" xlink:label="rvt_WaltDisneyCoMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_WaltDisneyCoMember" xlink:to="rvt_WaltDisneyCoMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_WaltDisneyCoMember_lbl" xml:lang="en-US">Walt Disney Co [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ComcastCorp8212ClassAMember" xlink:label="rvt_ComcastCorp8212ClassAMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ComcastCorp8212ClassAMember" xlink:to="rvt_ComcastCorp8212ClassAMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ComcastCorp8212ClassAMember_lbl" xml:lang="en-US">Comcast Corp 8212 Class A [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_StarbucksCorpMember" xlink:label="rvt_StarbucksCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_StarbucksCorpMember" xlink:to="rvt_StarbucksCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_StarbucksCorpMember_lbl" xml:lang="en-US">Starbucks Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_DoorDashInc8212ClassAMember" xlink:label="rvt_DoorDashInc8212ClassAMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_DoorDashInc8212ClassAMember" xlink:to="rvt_DoorDashInc8212ClassAMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_DoorDashInc8212ClassAMember_lbl" xml:lang="en-US">Door Dash Inc 8212 Class A [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_AirbnbInc8212ClassAMember" xlink:label="rvt_AirbnbInc8212ClassAMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_AirbnbInc8212ClassAMember" xlink:to="rvt_AirbnbInc8212ClassAMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_AirbnbInc8212ClassAMember_lbl" xml:lang="en-US">Airbnb Inc 8212 Class A [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010412Member" xlink:label="rvt_C000010412Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010412Member" xlink:to="rvt_C000010412Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010412Member_lbl" xml:lang="en-US">Precious Metals Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_PreciousMetalsFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_PreciousMetalsFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_PreciousMetalsFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_PreciousMetalsFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_PreciousMetalsFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, Precious Metals Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_PreciousMetalsFundVariableAnnuitySampP500MaterialsIndexMember" xlink:label="rvt_PreciousMetalsFundVariableAnnuitySampP500MaterialsIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_PreciousMetalsFundVariableAnnuitySampP500MaterialsIndexMember" xlink:to="rvt_PreciousMetalsFundVariableAnnuitySampP500MaterialsIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_PreciousMetalsFundVariableAnnuitySampP500MaterialsIndexMember_lbl" xml:lang="en-US">S&amp;P 500 Materials Index, Precious Metals Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_AgnicoEagleMinesLtdMember" xlink:label="rvt_AgnicoEagleMinesLtdMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_AgnicoEagleMinesLtdMember" xlink:to="rvt_AgnicoEagleMinesLtdMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_AgnicoEagleMinesLtdMember_lbl" xml:lang="en-US">Agnico Eagle Mines Ltd [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_BarrickMiningCorpMember" xlink:label="rvt_BarrickMiningCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_BarrickMiningCorpMember" xlink:to="rvt_BarrickMiningCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_BarrickMiningCorpMember_lbl" xml:lang="en-US">Barrick Mining Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_WheatonPreciousMetalsCorpMember" xlink:label="rvt_WheatonPreciousMetalsCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_WheatonPreciousMetalsCorpMember" xlink:to="rvt_WheatonPreciousMetalsCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_WheatonPreciousMetalsCorpMember_lbl" xml:lang="en-US">Wheaton Precious Metals Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_AnglogoldAshantiplcMember" xlink:label="rvt_AnglogoldAshantiplcMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_AnglogoldAshantiplcMember" xlink:to="rvt_AnglogoldAshantiplcMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_AnglogoldAshantiplcMember_lbl" xml:lang="en-US">Anglogold Ashantiplc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_GoldFieldsLtdADRMember" xlink:label="rvt_GoldFieldsLtdADRMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_GoldFieldsLtdADRMember" xlink:to="rvt_GoldFieldsLtdADRMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_GoldFieldsLtdADRMember_lbl" xml:lang="en-US">Gold Fields Ltd A D R [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_KinrossGoldCorpMember" xlink:label="rvt_KinrossGoldCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_KinrossGoldCorpMember" xlink:to="rvt_KinrossGoldCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_KinrossGoldCorpMember_lbl" xml:lang="en-US">Kinross Gold Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_PanAmericanSilverCorpMember" xlink:label="rvt_PanAmericanSilverCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_PanAmericanSilverCorpMember" xlink:to="rvt_PanAmericanSilverCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_PanAmericanSilverCorpMember_lbl" xml:lang="en-US">Pan American Silver Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_FrancoNevadaCorpMember" xlink:label="rvt_FrancoNevadaCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_FrancoNevadaCorpMember" xlink:to="rvt_FrancoNevadaCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_FrancoNevadaCorpMember_lbl" xml:lang="en-US">Franco Nevada Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010395Member" xlink:label="rvt_C000010395Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010395Member" xlink:to="rvt_C000010395Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010395Member_lbl" xml:lang="en-US">Real Estate Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_RealEstateFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_RealEstateFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_RealEstateFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_RealEstateFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_RealEstateFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, Real Estate Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_RealEstateFundVariableAnnuityMSCIUSREITIndexMember" xlink:label="rvt_RealEstateFundVariableAnnuityMSCIUSREITIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_RealEstateFundVariableAnnuityMSCIUSREITIndexMember" xlink:to="rvt_RealEstateFundVariableAnnuityMSCIUSREITIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_RealEstateFundVariableAnnuityMSCIUSREITIndexMember_lbl" xml:lang="en-US">MSCI U.S. REIT Index, Real Estate Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_REITsDiversifiedMember" xlink:label="rvt_REITsDiversifiedMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_REITsDiversifiedMember" xlink:to="rvt_REITsDiversifiedMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_REITsDiversifiedMember_lbl" xml:lang="en-US">R E I Ts Diversified [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_REITsHealthCareMember" xlink:label="rvt_REITsHealthCareMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_REITsHealthCareMember" xlink:to="rvt_REITsHealthCareMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_REITsHealthCareMember_lbl" xml:lang="en-US">R E I Ts Health Care [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_REITsApartmentsMember" xlink:label="rvt_REITsApartmentsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_REITsApartmentsMember" xlink:to="rvt_REITsApartmentsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_REITsApartmentsMember_lbl" xml:lang="en-US">R E I Ts Apartments [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_REITsWarehouseIndustriesMember" xlink:label="rvt_REITsWarehouseIndustriesMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_REITsWarehouseIndustriesMember" xlink:to="rvt_REITsWarehouseIndustriesMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_REITsWarehouseIndustriesMember_lbl" xml:lang="en-US">R E I Ts Warehouse Industries [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_RealEstateManagementServicesMember" xlink:label="rvt_RealEstateManagementServicesMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_RealEstateManagementServicesMember" xlink:to="rvt_RealEstateManagementServicesMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_RealEstateManagementServicesMember_lbl" xml:lang="en-US">Real Estate Management Services [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_REITsShoppingCentersMember" xlink:label="rvt_REITsShoppingCentersMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_REITsShoppingCentersMember" xlink:to="rvt_REITsShoppingCentersMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_REITsShoppingCentersMember_lbl" xml:lang="en-US">R E I Ts Shopping Centers [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_REITsStorageMember" xlink:label="rvt_REITsStorageMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_REITsStorageMember" xlink:to="rvt_REITsStorageMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_REITsStorageMember_lbl" xml:lang="en-US">R E I Ts Storage [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_WelltowerIncMember" xlink:label="rvt_WelltowerIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_WelltowerIncMember" xlink:to="rvt_WelltowerIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_WelltowerIncMember_lbl" xml:lang="en-US">Welltower Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_PrologisIncMember" xlink:label="rvt_PrologisIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_PrologisIncMember" xlink:to="rvt_PrologisIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_PrologisIncMember_lbl" xml:lang="en-US">Prologis Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_AmericanTowerCorp8212ClassAMember" xlink:label="rvt_AmericanTowerCorp8212ClassAMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_AmericanTowerCorp8212ClassAMember" xlink:to="rvt_AmericanTowerCorp8212ClassAMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_AmericanTowerCorp8212ClassAMember_lbl" xml:lang="en-US">American Tower Corp 8212 Class A [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_EquinixIncMember" xlink:label="rvt_EquinixIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_EquinixIncMember" xlink:to="rvt_EquinixIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_EquinixIncMember_lbl" xml:lang="en-US">Equinix Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_SimonPropertyGroupIncMember" xlink:label="rvt_SimonPropertyGroupIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_SimonPropertyGroupIncMember" xlink:to="rvt_SimonPropertyGroupIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_SimonPropertyGroupIncMember_lbl" xml:lang="en-US">Simon Property Group Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_DigitalRealtyTrustIncMember" xlink:label="rvt_DigitalRealtyTrustIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_DigitalRealtyTrustIncMember" xlink:to="rvt_DigitalRealtyTrustIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_DigitalRealtyTrustIncMember_lbl" xml:lang="en-US">Digital Realty Trust Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_RealtyIncomeCorpMember" xlink:label="rvt_RealtyIncomeCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_RealtyIncomeCorpMember" xlink:to="rvt_RealtyIncomeCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_RealtyIncomeCorpMember_lbl" xml:lang="en-US">Realty Income Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_CBREGroupInc8212ClassAMember" xlink:label="rvt_CBREGroupInc8212ClassAMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_CBREGroupInc8212ClassAMember" xlink:to="rvt_CBREGroupInc8212ClassAMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_CBREGroupInc8212ClassAMember_lbl" xml:lang="en-US">C B R E Group Inc 8212 Class A [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_PublicStorageMember" xlink:label="rvt_PublicStorageMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_PublicStorageMember" xlink:to="rvt_PublicStorageMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_PublicStorageMember_lbl" xml:lang="en-US">Public Storage [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_CrownCastleIncMember" xlink:label="rvt_CrownCastleIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_CrownCastleIncMember" xlink:to="rvt_CrownCastleIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_CrownCastleIncMember_lbl" xml:lang="en-US">Crown Castle Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010389Member" xlink:label="rvt_C000010389Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010389Member" xlink:to="rvt_C000010389Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010389Member_lbl" xml:lang="en-US">Retailing Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_RetailingFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_RetailingFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_RetailingFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_RetailingFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_RetailingFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, Retailing Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_RetailingFundVariableAnnuitySampP500ConsumerDiscretionaryIndexMember" xlink:label="rvt_RetailingFundVariableAnnuitySampP500ConsumerDiscretionaryIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_RetailingFundVariableAnnuitySampP500ConsumerDiscretionaryIndexMember" xlink:to="rvt_RetailingFundVariableAnnuitySampP500ConsumerDiscretionaryIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_RetailingFundVariableAnnuitySampP500ConsumerDiscretionaryIndexMember_lbl" xml:lang="en-US">S&amp;P 500 Consumer Discretionary Index, Retailing Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_DistributionampWholesaleMember" xlink:label="rvt_DistributionampWholesaleMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_DistributionampWholesaleMember" xlink:to="rvt_DistributionampWholesaleMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_DistributionampWholesaleMember_lbl" xml:lang="en-US">Distributionamp Wholesale [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_WalmartIncMember" xlink:label="rvt_WalmartIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_WalmartIncMember" xlink:to="rvt_WalmartIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_WalmartIncMember_lbl" xml:lang="en-US">Walmart Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_CostcoWholesaleCorpMember" xlink:label="rvt_CostcoWholesaleCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_CostcoWholesaleCorpMember" xlink:to="rvt_CostcoWholesaleCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_CostcoWholesaleCorpMember_lbl" xml:lang="en-US">Costco Wholesale Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_TJXCompaniesIncMember" xlink:label="rvt_TJXCompaniesIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_TJXCompaniesIncMember" xlink:to="rvt_TJXCompaniesIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_TJXCompaniesIncMember_lbl" xml:lang="en-US">T J X Companies Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_HomeDepotIncMember" xlink:label="rvt_HomeDepotIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_HomeDepotIncMember" xlink:to="rvt_HomeDepotIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_HomeDepotIncMember_lbl" xml:lang="en-US">Home Depot Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_LowesCompaniesIncMember" xlink:label="rvt_LowesCompaniesIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_LowesCompaniesIncMember" xlink:to="rvt_LowesCompaniesIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_LowesCompaniesIncMember_lbl" xml:lang="en-US">Lowes Companies Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_CarvanaCoMember" xlink:label="rvt_CarvanaCoMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_CarvanaCoMember" xlink:to="rvt_CarvanaCoMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_CarvanaCoMember_lbl" xml:lang="en-US">Carvana Co [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_OReillyAutomotiveIncMember" xlink:label="rvt_OReillyAutomotiveIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_OReillyAutomotiveIncMember" xlink:to="rvt_OReillyAutomotiveIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_OReillyAutomotiveIncMember_lbl" xml:lang="en-US">O Reilly Automotive Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_PDDHoldingsIncADRMember" xlink:label="rvt_PDDHoldingsIncADRMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_PDDHoldingsIncADRMember" xlink:to="rvt_PDDHoldingsIncADRMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_PDDHoldingsIncADRMember_lbl" xml:lang="en-US">P D D Holdings Inc A D R [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_RossStoresIncMember" xlink:label="rvt_RossStoresIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_RossStoresIncMember" xlink:to="rvt_RossStoresIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_RossStoresIncMember_lbl" xml:lang="en-US">Ross Stores Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010391Member" xlink:label="rvt_C000010391Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010391Member" xlink:to="rvt_C000010391Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010391Member_lbl" xml:lang="en-US">Technology Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_TechnologyFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_TechnologyFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_TechnologyFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_TechnologyFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_TechnologyFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, Technology Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_TechnologyFundVariableAnnuitySampP500InformationTechnologyIndexMember" xlink:label="rvt_TechnologyFundVariableAnnuitySampP500InformationTechnologyIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_TechnologyFundVariableAnnuitySampP500InformationTechnologyIndexMember" xlink:to="rvt_TechnologyFundVariableAnnuitySampP500InformationTechnologyIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_TechnologyFundVariableAnnuitySampP500InformationTechnologyIndexMember_lbl" xml:lang="en-US">S&amp;P 500 Information Technology Index, Technology Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ElectronicsMember" xlink:label="rvt_ElectronicsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ElectronicsMember" xlink:to="rvt_ElectronicsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ElectronicsMember_lbl" xml:lang="en-US">Electronics [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_InvestmentCompaniesMember" xlink:label="rvt_InvestmentCompaniesMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_InvestmentCompaniesMember" xlink:to="rvt_InvestmentCompaniesMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_InvestmentCompaniesMember_lbl" xml:lang="en-US">Investment Companies [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_AppleIncMember" xlink:label="rvt_AppleIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_AppleIncMember" xlink:to="rvt_AppleIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_AppleIncMember_lbl" xml:lang="en-US">Apple Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_MicrosoftCorpMember" xlink:label="rvt_MicrosoftCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_MicrosoftCorpMember" xlink:to="rvt_MicrosoftCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_MicrosoftCorpMember_lbl" xml:lang="en-US">Microsoft Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_PalantirTechnologiesInc8212ClassAMember" xlink:label="rvt_PalantirTechnologiesInc8212ClassAMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_PalantirTechnologiesInc8212ClassAMember" xlink:to="rvt_PalantirTechnologiesInc8212ClassAMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_PalantirTechnologiesInc8212ClassAMember_lbl" xml:lang="en-US">Palantir Technologies Inc 8212 Class A [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_OracleCorpMember" xlink:label="rvt_OracleCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_OracleCorpMember" xlink:to="rvt_OracleCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_OracleCorpMember_lbl" xml:lang="en-US">Oracle Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010392Member" xlink:label="rvt_C000010392Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010392Member" xlink:to="rvt_C000010392Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010392Member_lbl" xml:lang="en-US">Telecommunications Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_TelecommunicationsFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_TelecommunicationsFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_TelecommunicationsFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_TelecommunicationsFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_TelecommunicationsFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, Telecommunications Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_TelecommunicationsFundVariableAnnuitySampP500TelecommunicationServicesIndexMember" xlink:label="rvt_TelecommunicationsFundVariableAnnuitySampP500TelecommunicationServicesIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_TelecommunicationsFundVariableAnnuitySampP500TelecommunicationServicesIndexMember" xlink:to="rvt_TelecommunicationsFundVariableAnnuitySampP500TelecommunicationServicesIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_TelecommunicationsFundVariableAnnuitySampP500TelecommunicationServicesIndexMember_lbl" xml:lang="en-US">S&amp;P 500 Telecommunication Services Index, Telecommunications Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_AerospaceampDefenseMember" xlink:label="rvt_AerospaceampDefenseMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_AerospaceampDefenseMember" xlink:to="rvt_AerospaceampDefenseMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_AerospaceampDefenseMember_lbl" xml:lang="en-US">Aerospaceamp Defense [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ATampTIncMember" xlink:label="rvt_ATampTIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ATampTIncMember" xlink:to="rvt_ATampTIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ATampTIncMember_lbl" xml:lang="en-US">A Tamp T Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_VerizonCommunicationsIncMember" xlink:label="rvt_VerizonCommunicationsIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_VerizonCommunicationsIncMember" xlink:to="rvt_VerizonCommunicationsIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_VerizonCommunicationsIncMember_lbl" xml:lang="en-US">Verizon Communications Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_TMobileUSIncMember" xlink:label="rvt_TMobileUSIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_TMobileUSIncMember" xlink:to="rvt_TMobileUSIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_TMobileUSIncMember_lbl" xml:lang="en-US">T Mobile U S Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_MotorolaSolutionsIncMember" xlink:label="rvt_MotorolaSolutionsIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_MotorolaSolutionsIncMember" xlink:to="rvt_MotorolaSolutionsIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_MotorolaSolutionsIncMember_lbl" xml:lang="en-US">Motorola Solutions Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_CienaCorpMember" xlink:label="rvt_CienaCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_CienaCorpMember" xlink:to="rvt_CienaCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_CienaCorpMember_lbl" xml:lang="en-US">Ciena Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_EchoStarCorp8212ClassAMember" xlink:label="rvt_EchoStarCorp8212ClassAMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_EchoStarCorp8212ClassAMember" xlink:to="rvt_EchoStarCorp8212ClassAMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_EchoStarCorp8212ClassAMember_lbl" xml:lang="en-US">Echo Star Corp 8212 Class A [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_LumentumHoldingsIncMember" xlink:label="rvt_LumentumHoldingsIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_LumentumHoldingsIncMember" xlink:to="rvt_LumentumHoldingsIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_LumentumHoldingsIncMember_lbl" xml:lang="en-US">Lumentum Holdings Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010393Member" xlink:label="rvt_C000010393Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010393Member" xlink:to="rvt_C000010393Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010393Member_lbl" xml:lang="en-US">Transportation Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_TransportationFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_TransportationFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_TransportationFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_TransportationFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_TransportationFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, Transporation Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_TransportationFundVariableAnnuitySampP500IndustrialsIndexMember" xlink:label="rvt_TransportationFundVariableAnnuitySampP500IndustrialsIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_TransportationFundVariableAnnuitySampP500IndustrialsIndexMember" xlink:to="rvt_TransportationFundVariableAnnuitySampP500IndustrialsIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_TransportationFundVariableAnnuitySampP500IndustrialsIndexMember_lbl" xml:lang="en-US">S&amp;P 500 Industrials Index, Transportation Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_AutoManufacturersMember" xlink:label="rvt_AutoManufacturersMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_AutoManufacturersMember" xlink:to="rvt_AutoManufacturersMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_AutoManufacturersMember_lbl" xml:lang="en-US">Auto Manufacturers [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_AutoPartsampEquipmentMember" xlink:label="rvt_AutoPartsampEquipmentMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_AutoPartsampEquipmentMember" xlink:to="rvt_AutoPartsampEquipmentMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_AutoPartsampEquipmentMember_lbl" xml:lang="en-US">Auto Partsamp Equipment [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_AirlinesMember" xlink:label="rvt_AirlinesMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_AirlinesMember" xlink:to="rvt_AirlinesMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_AirlinesMember_lbl" xml:lang="en-US">Airlines [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_TeslaIncMember" xlink:label="rvt_TeslaIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_TeslaIncMember" xlink:to="rvt_TeslaIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_TeslaIncMember_lbl" xml:lang="en-US">Tesla Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_UnionPacificCorpMember" xlink:label="rvt_UnionPacificCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_UnionPacificCorpMember" xlink:to="rvt_UnionPacificCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_UnionPacificCorpMember_lbl" xml:lang="en-US">Union Pacific Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_UnitedParcelServiceInc8212ClassBMember" xlink:label="rvt_UnitedParcelServiceInc8212ClassBMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_UnitedParcelServiceInc8212ClassBMember" xlink:to="rvt_UnitedParcelServiceInc8212ClassBMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_UnitedParcelServiceInc8212ClassBMember_lbl" xml:lang="en-US">United Parcel Service Inc 8212 Class B [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_GeneralMotorsCoMember" xlink:label="rvt_GeneralMotorsCoMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_GeneralMotorsCoMember" xlink:to="rvt_GeneralMotorsCoMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_GeneralMotorsCoMember_lbl" xml:lang="en-US">General Motors Co [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_CSXCorpMember" xlink:label="rvt_CSXCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_CSXCorpMember" xlink:to="rvt_CSXCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_CSXCorpMember_lbl" xml:lang="en-US">C S X Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_NorfolkSouthernCorpMember" xlink:label="rvt_NorfolkSouthernCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_NorfolkSouthernCorpMember" xlink:to="rvt_NorfolkSouthernCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_NorfolkSouthernCorpMember_lbl" xml:lang="en-US">Norfolk Southern Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_FedExCorpMember" xlink:label="rvt_FedExCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_FedExCorpMember" xlink:to="rvt_FedExCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_FedExCorpMember_lbl" xml:lang="en-US">Fed Ex Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_FordMotorCoMember" xlink:label="rvt_FordMotorCoMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_FordMotorCoMember" xlink:to="rvt_FordMotorCoMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_FordMotorCoMember_lbl" xml:lang="en-US">Ford Motor Co [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_DeltaAirLinesIncMember" xlink:label="rvt_DeltaAirLinesIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_DeltaAirLinesIncMember" xlink:to="rvt_DeltaAirLinesIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_DeltaAirLinesIncMember_lbl" xml:lang="en-US">Delta Air Lines Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010394Member" xlink:label="rvt_C000010394Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010394Member" xlink:to="rvt_C000010394Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010394Member_lbl" xml:lang="en-US">Utilities Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_UtilitiesFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_UtilitiesFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_UtilitiesFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_UtilitiesFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_UtilitiesFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, Utilities Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_UtilitiesFundVariableAnnuitySampP500UtilitiesIndexMember" xlink:label="rvt_UtilitiesFundVariableAnnuitySampP500UtilitiesIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_UtilitiesFundVariableAnnuitySampP500UtilitiesIndexMember" xlink:to="rvt_UtilitiesFundVariableAnnuitySampP500UtilitiesIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_UtilitiesFundVariableAnnuitySampP500UtilitiesIndexMember_lbl" xml:lang="en-US">S&amp;P 500 Utilities Index, Utilities Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ElectricMember" xlink:label="rvt_ElectricMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ElectricMember" xlink:to="rvt_ElectricMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ElectricMember_lbl" xml:lang="en-US">Electric [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_GasMember" xlink:label="rvt_GasMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_GasMember" xlink:to="rvt_GasMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_GasMember_lbl" xml:lang="en-US">Gas [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_WaterMember" xlink:label="rvt_WaterMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_WaterMember" xlink:to="rvt_WaterMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_WaterMember_lbl" xml:lang="en-US">Water [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_NextEraEnergyIncMember" xlink:label="rvt_NextEraEnergyIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_NextEraEnergyIncMember" xlink:to="rvt_NextEraEnergyIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_NextEraEnergyIncMember_lbl" xml:lang="en-US">Next Era Energy Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ConstellationEnergyCorpMember" xlink:label="rvt_ConstellationEnergyCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ConstellationEnergyCorpMember" xlink:to="rvt_ConstellationEnergyCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ConstellationEnergyCorpMember_lbl" xml:lang="en-US">Constellation Energy Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_SouthernCoMember" xlink:label="rvt_SouthernCoMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_SouthernCoMember" xlink:to="rvt_SouthernCoMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_SouthernCoMember_lbl" xml:lang="en-US">Southern Co [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_DukeEnergyCorpMember" xlink:label="rvt_DukeEnergyCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_DukeEnergyCorpMember" xlink:to="rvt_DukeEnergyCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_DukeEnergyCorpMember_lbl" xml:lang="en-US">Duke Energy Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_AmericanElectricPowerCompanyIncMember" xlink:label="rvt_AmericanElectricPowerCompanyIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_AmericanElectricPowerCompanyIncMember" xlink:to="rvt_AmericanElectricPowerCompanyIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_AmericanElectricPowerCompanyIncMember_lbl" xml:lang="en-US">American Electric Power Company Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_SempraMember" xlink:label="rvt_SempraMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_SempraMember" xlink:to="rvt_SempraMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_SempraMember_lbl" xml:lang="en-US">Sempra [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_DominionEnergyIncMember" xlink:label="rvt_DominionEnergyIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_DominionEnergyIncMember" xlink:to="rvt_DominionEnergyIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_DominionEnergyIncMember_lbl" xml:lang="en-US">Dominion Energy Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_VistraCorpMember" xlink:label="rvt_VistraCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_VistraCorpMember" xlink:to="rvt_VistraCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_VistraCorpMember_lbl" xml:lang="en-US">Vistra Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ExelonCorpMember" xlink:label="rvt_ExelonCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ExelonCorpMember" xlink:to="rvt_ExelonCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ExelonCorpMember_lbl" xml:lang="en-US">Exelon Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_XcelEnergyIncMember" xlink:label="rvt_XcelEnergyIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_XcelEnergyIncMember" xlink:to="rvt_XcelEnergyIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_XcelEnergyIncMember_lbl" xml:lang="en-US">Xcel Energy Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010422Member" xlink:label="rvt_C000010422Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010422Member" xlink:to="rvt_C000010422Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010422Member_lbl" xml:lang="en-US">Dow 2x Strategy Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_Dow2xStrategyFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_Dow2xStrategyFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_Dow2xStrategyFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_Dow2xStrategyFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_Dow2xStrategyFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, Dow 2x Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_Dow2xStrategyFundVariableAnnuityDowJonesIndustrialAverageMember" xlink:label="rvt_Dow2xStrategyFundVariableAnnuityDowJonesIndustrialAverageMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_Dow2xStrategyFundVariableAnnuityDowJonesIndustrialAverageMember" xlink:to="rvt_Dow2xStrategyFundVariableAnnuityDowJonesIndustrialAverageMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_Dow2xStrategyFundVariableAnnuityDowJonesIndustrialAverageMember_lbl" xml:lang="en-US">Dow Jones Industrial Average, Dow 2x Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_DowJonesIndustrialAverageEquityMiniFuturesContractsMember" xlink:label="rvt_DowJonesIndustrialAverageEquityMiniFuturesContractsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_DowJonesIndustrialAverageEquityMiniFuturesContractsMember" xlink:to="rvt_DowJonesIndustrialAverageEquityMiniFuturesContractsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_DowJonesIndustrialAverageEquityMiniFuturesContractsMember_lbl" xml:lang="en-US">Dow Jones Industrial Average Equity Mini Futures Contracts [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_DowJonesIndustrialAverageEquitySwapAgreementsMember" xlink:label="rvt_DowJonesIndustrialAverageEquitySwapAgreementsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_DowJonesIndustrialAverageEquitySwapAgreementsMember" xlink:to="rvt_DowJonesIndustrialAverageEquitySwapAgreementsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_DowJonesIndustrialAverageEquitySwapAgreementsMember_lbl" xml:lang="en-US">Dow Jones Industrial Average Equity Swap Agreements [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_FinancialMember" xlink:label="rvt_FinancialMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_FinancialMember" xlink:to="rvt_FinancialMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_FinancialMember_lbl" xml:lang="en-US">Financial [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_TechnologyMember" xlink:label="rvt_TechnologyMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_TechnologyMember" xlink:to="rvt_TechnologyMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_TechnologyMember_lbl" xml:lang="en-US">Technology [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ConsumerNoncyclicalMember" xlink:label="rvt_ConsumerNoncyclicalMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ConsumerNoncyclicalMember" xlink:to="rvt_ConsumerNoncyclicalMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ConsumerNoncyclicalMember_lbl" xml:lang="en-US">Consumer Noncyclical [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_IndustrialMember" xlink:label="rvt_IndustrialMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_IndustrialMember" xlink:to="rvt_IndustrialMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_IndustrialMember_lbl" xml:lang="en-US">Industrial [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ConsumerCyclicalMember" xlink:label="rvt_ConsumerCyclicalMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ConsumerCyclicalMember" xlink:to="rvt_ConsumerCyclicalMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ConsumerCyclicalMember_lbl" xml:lang="en-US">Consumer Cyclical [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_CaterpillarIncMember" xlink:label="rvt_CaterpillarIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_CaterpillarIncMember" xlink:to="rvt_CaterpillarIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_CaterpillarIncMember_lbl" xml:lang="en-US">Caterpillar Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_AmericanExpressCoMember" xlink:label="rvt_AmericanExpressCoMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_AmericanExpressCoMember" xlink:to="rvt_AmericanExpressCoMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_AmericanExpressCoMember_lbl" xml:lang="en-US">American Express Co [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010424Member" xlink:label="rvt_C000010424Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010424Member" xlink:to="rvt_C000010424Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010424Member_lbl" xml:lang="en-US">Inverse Dow 2x Strategy Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_InverseDow2xStrategyFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_InverseDow2xStrategyFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_InverseDow2xStrategyFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_InverseDow2xStrategyFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_InverseDow2xStrategyFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, Inverse Dow 2x Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_InverseDow2xStrategyFundVariableAnnuityDowJonesIndustrialAverageMember" xlink:label="rvt_InverseDow2xStrategyFundVariableAnnuityDowJonesIndustrialAverageMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_InverseDow2xStrategyFundVariableAnnuityDowJonesIndustrialAverageMember" xlink:to="rvt_InverseDow2xStrategyFundVariableAnnuityDowJonesIndustrialAverageMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_InverseDow2xStrategyFundVariableAnnuityDowJonesIndustrialAverageMember_lbl" xml:lang="en-US">Dow Jones Industrial Average, Inverse Dow 2x Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010396Member" xlink:label="rvt_C000010396Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010396Member" xlink:to="rvt_C000010396Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010396Member_lbl" xml:lang="en-US">Mid-Cap 1.5x Strategy Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_MidCap15xStrategyFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_MidCap15xStrategyFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_MidCap15xStrategyFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_MidCap15xStrategyFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_MidCap15xStrategyFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, Mid Cap 1.5x Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_MidCap15xStrategyFundVariableAnnuitySampPMidCap400IndexMember" xlink:label="rvt_MidCap15xStrategyFundVariableAnnuitySampPMidCap400IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_MidCap15xStrategyFundVariableAnnuitySampPMidCap400IndexMember" xlink:to="rvt_MidCap15xStrategyFundVariableAnnuitySampPMidCap400IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_MidCap15xStrategyFundVariableAnnuitySampPMidCap400IndexMember_lbl" xml:lang="en-US">S&amp;P MidCap 400 Index, Mid Cap 1.5 Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_SampPMidCap400IndexEquitySwapAgreementsMember" xlink:label="rvt_SampPMidCap400IndexEquitySwapAgreementsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_SampPMidCap400IndexEquitySwapAgreementsMember" xlink:to="rvt_SampPMidCap400IndexEquitySwapAgreementsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_SampPMidCap400IndexEquitySwapAgreementsMember_lbl" xml:lang="en-US">Samp P Mid Cap 400 Index Equity Swap Agreements [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_EnergyMember" xlink:label="rvt_EnergyMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_EnergyMember" xlink:to="rvt_EnergyMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_EnergyMember_lbl" xml:lang="en-US">Energy [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_GuggenheimUltraShortDurationFund8212InstitutionalClassMember" xlink:label="rvt_GuggenheimUltraShortDurationFund8212InstitutionalClassMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_GuggenheimUltraShortDurationFund8212InstitutionalClassMember" xlink:to="rvt_GuggenheimUltraShortDurationFund8212InstitutionalClassMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_GuggenheimUltraShortDurationFund8212InstitutionalClassMember_lbl" xml:lang="en-US">Guggenheim Ultra Short Duration Fund 8212 Institutional Class [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_GuggenheimStrategyFundIIMember" xlink:label="rvt_GuggenheimStrategyFundIIMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_GuggenheimStrategyFundIIMember" xlink:to="rvt_GuggenheimStrategyFundIIMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_GuggenheimStrategyFundIIMember_lbl" xml:lang="en-US">Guggenheim Strategy Fund I I [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_CoherentCorpMember" xlink:label="rvt_CoherentCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_CoherentCorpMember" xlink:to="rvt_CoherentCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_CoherentCorpMember_lbl" xml:lang="en-US">Coherent Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_FlexLtdMember" xlink:label="rvt_FlexLtdMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_FlexLtdMember" xlink:to="rvt_FlexLtdMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_FlexLtdMember_lbl" xml:lang="en-US">Flex Ltd [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_TwilioInc8212ClassAMember" xlink:label="rvt_TwilioInc8212ClassAMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_TwilioInc8212ClassAMember" xlink:to="rvt_TwilioInc8212ClassAMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_TwilioInc8212ClassAMember_lbl" xml:lang="en-US">Twilio Inc 8212 Class A [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_PureStorageInc8212ClassAMember" xlink:label="rvt_PureStorageInc8212ClassAMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_PureStorageInc8212ClassAMember" xlink:to="rvt_PureStorageInc8212ClassAMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_PureStorageInc8212ClassAMember_lbl" xml:lang="en-US">Pure Storage Inc 8212 Class A [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_UnitedTherapeuticsCorpMember" xlink:label="rvt_UnitedTherapeuticsCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_UnitedTherapeuticsCorpMember" xlink:to="rvt_UnitedTherapeuticsCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_UnitedTherapeuticsCorpMember_lbl" xml:lang="en-US">United Therapeutics Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_CaseysGeneralStoresIncMember" xlink:label="rvt_CaseysGeneralStoresIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_CaseysGeneralStoresIncMember" xlink:to="rvt_CaseysGeneralStoresIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_CaseysGeneralStoresIncMember_lbl" xml:lang="en-US">Caseys General Stores Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010414Member" xlink:label="rvt_C000010414Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010414Member" xlink:to="rvt_C000010414Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010414Member_lbl" xml:lang="en-US">Inverse Mid-Cap Strategy Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_InverseMidCapStrategyFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_InverseMidCapStrategyFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_InverseMidCapStrategyFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_InverseMidCapStrategyFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_InverseMidCapStrategyFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, Inverse Mid Cap Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_InverseMidCapStrategyFundVariableAnnuitySampPMidCap400IndexMember" xlink:label="rvt_InverseMidCapStrategyFundVariableAnnuitySampPMidCap400IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_InverseMidCapStrategyFundVariableAnnuitySampPMidCap400IndexMember" xlink:to="rvt_InverseMidCapStrategyFundVariableAnnuitySampPMidCap400IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_InverseMidCapStrategyFundVariableAnnuitySampPMidCap400IndexMember_lbl" xml:lang="en-US">S&amp;P MidCap 400 Index, Inverse Mid Cap Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_TotalMember" xlink:label="rvt_TotalMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_TotalMember" xlink:to="rvt_TotalMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_TotalMember_lbl" xml:lang="en-US">Total [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010425Member" xlink:label="rvt_C000010425Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010425Member" xlink:to="rvt_C000010425Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010425Member_lbl" xml:lang="en-US">NASDAQ-100(R) Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_NASDAQ100sup174supFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_NASDAQ100sup174supFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_NASDAQ100sup174supFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_NASDAQ100sup174supFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_NASDAQ100sup174supFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, NASDAQ 100 Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_NASDAQ100sup174supFundVariableAnnuityNASDAQ100IndexMember" xlink:label="rvt_NASDAQ100sup174supFundVariableAnnuityNASDAQ100IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_NASDAQ100sup174supFundVariableAnnuityNASDAQ100IndexMember" xlink:to="rvt_NASDAQ100sup174supFundVariableAnnuityNASDAQ100IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_NASDAQ100sup174supFundVariableAnnuityNASDAQ100IndexMember_lbl" xml:lang="en-US">NASDAQ-100 Index, NASDAQ 100 Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_CommunicationsMember" xlink:label="rvt_CommunicationsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_CommunicationsMember" xlink:to="rvt_CommunicationsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_CommunicationsMember_lbl" xml:lang="en-US">Communications [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_NASDAQ100IndexEquityMiniFuturesContractsMember" xlink:label="rvt_NASDAQ100IndexEquityMiniFuturesContractsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_NASDAQ100IndexEquityMiniFuturesContractsMember" xlink:to="rvt_NASDAQ100IndexEquityMiniFuturesContractsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_NASDAQ100IndexEquityMiniFuturesContractsMember_lbl" xml:lang="en-US">N A S D A Q 100 Index Equity Mini Futures Contracts [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_NASDAQ100IndexEquitySwapAgreementsMember" xlink:label="rvt_NASDAQ100IndexEquitySwapAgreementsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_NASDAQ100IndexEquitySwapAgreementsMember" xlink:to="rvt_NASDAQ100IndexEquitySwapAgreementsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_NASDAQ100IndexEquitySwapAgreementsMember_lbl" xml:lang="en-US">N A S D A Q 100 Index Equity Swap Agreements [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_AlphabetInc8212ClassCMember" xlink:label="rvt_AlphabetInc8212ClassCMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_AlphabetInc8212ClassCMember" xlink:to="rvt_AlphabetInc8212ClassCMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_AlphabetInc8212ClassCMember_lbl" xml:lang="en-US">Alphabet Inc 8212 Class C [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010421Member" xlink:label="rvt_C000010421Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010421Member" xlink:to="rvt_C000010421Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010421Member_lbl" xml:lang="en-US">NASDAQ-100(R) 2x Strategy Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_NASDAQ100sup174sup2xStrategyFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_NASDAQ100sup174sup2xStrategyFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_NASDAQ100sup174sup2xStrategyFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_NASDAQ100sup174sup2xStrategyFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_NASDAQ100sup174sup2xStrategyFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, NASDAQ 100 2x Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_NASDAQ100sup174sup2xStrategyFundVariableAnnuityNASDAQ100IndexMember" xlink:label="rvt_NASDAQ100sup174sup2xStrategyFundVariableAnnuityNASDAQ100IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_NASDAQ100sup174sup2xStrategyFundVariableAnnuityNASDAQ100IndexMember" xlink:to="rvt_NASDAQ100sup174sup2xStrategyFundVariableAnnuityNASDAQ100IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_NASDAQ100sup174sup2xStrategyFundVariableAnnuityNASDAQ100IndexMember_lbl" xml:lang="en-US">NASDAQ-100 Index, NASDAQ 100 2x Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010426Member" xlink:label="rvt_C000010426Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010426Member" xlink:to="rvt_C000010426Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010426Member_lbl" xml:lang="en-US">Inverse NASDAQ-100(R) Strategy Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_InverseNASDAQ100sup174supStrategyFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_InverseNASDAQ100sup174supStrategyFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_InverseNASDAQ100sup174supStrategyFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_InverseNASDAQ100sup174supStrategyFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_InverseNASDAQ100sup174supStrategyFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, Inverse NASDAQ 100 Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_InverseNASDAQ100sup174supStrategyFundVariableAnnuityNASDAQ100IndexMember" xlink:label="rvt_InverseNASDAQ100sup174supStrategyFundVariableAnnuityNASDAQ100IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_InverseNASDAQ100sup174supStrategyFundVariableAnnuityNASDAQ100IndexMember" xlink:to="rvt_InverseNASDAQ100sup174supStrategyFundVariableAnnuityNASDAQ100IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_InverseNASDAQ100sup174supStrategyFundVariableAnnuityNASDAQ100IndexMember_lbl" xml:lang="en-US">NASDAQ-100 Index, Inverse NASDAQ 100 Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010397Member" xlink:label="rvt_C000010397Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010397Member" xlink:to="rvt_C000010397Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010397Member_lbl" xml:lang="en-US">Russell 2000(R) 1.5x Strategy Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_Russell2000sup174sup15xStrategyFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_Russell2000sup174sup15xStrategyFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_Russell2000sup174sup15xStrategyFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_Russell2000sup174sup15xStrategyFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_Russell2000sup174sup15xStrategyFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, Russell 2000 1.5x Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_Russell2000sup174sup15xStrategyFundVariableAnnuityRussell2000IndexMember" xlink:label="rvt_Russell2000sup174sup15xStrategyFundVariableAnnuityRussell2000IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_Russell2000sup174sup15xStrategyFundVariableAnnuityRussell2000IndexMember" xlink:to="rvt_Russell2000sup174sup15xStrategyFundVariableAnnuityRussell2000IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_Russell2000sup174sup15xStrategyFundVariableAnnuityRussell2000IndexMember_lbl" xml:lang="en-US">Russell 2000 Index, Russell 2000 1.5x Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_Russell2000IndexEquitySwapAgreementsMember" xlink:label="rvt_Russell2000IndexEquitySwapAgreementsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_Russell2000IndexEquitySwapAgreementsMember" xlink:to="rvt_Russell2000IndexEquitySwapAgreementsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_Russell2000IndexEquitySwapAgreementsMember_lbl" xml:lang="en-US">Russell 2000 Index Equity Swap Agreements [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ExchangeTradedFundsMember" xlink:label="us-gaap_ExchangeTradedFundsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ExchangeTradedFundsMember" xlink:to="us-gaap_ExchangeTradedFundsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ExchangeTradedFundsMember_lbl" xml:lang="en-US">Exchange Traded Funds [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_Russell2000IndexEquityMiniFuturesContractsMember" xlink:label="rvt_Russell2000IndexEquityMiniFuturesContractsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_Russell2000IndexEquityMiniFuturesContractsMember" xlink:to="rvt_Russell2000IndexEquityMiniFuturesContractsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_Russell2000IndexEquityMiniFuturesContractsMember_lbl" xml:lang="en-US">Russell 2000 Index Equity Mini Futures Contracts [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_VanguardRussell2000ETFMember" xlink:label="rvt_VanguardRussell2000ETFMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_VanguardRussell2000ETFMember" xlink:to="rvt_VanguardRussell2000ETFMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_VanguardRussell2000ETFMember_lbl" xml:lang="en-US">Vanguard Russell 2000 E T F [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ISharesRussell2000IndexETFMember" xlink:label="rvt_ISharesRussell2000IndexETFMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ISharesRussell2000IndexETFMember" xlink:to="rvt_ISharesRussell2000IndexETFMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ISharesRussell2000IndexETFMember_lbl" xml:lang="en-US">I Shares Russell 2000 Index E T F [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_CredoTechnologyGroupHoldingLtdMember" xlink:label="rvt_CredoTechnologyGroupHoldingLtdMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_CredoTechnologyGroupHoldingLtdMember" xlink:to="rvt_CredoTechnologyGroupHoldingLtdMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_CredoTechnologyGroupHoldingLtdMember_lbl" xml:lang="en-US">Credo Technology Group Holding Ltd [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_BloomEnergyCorp8212ClassAMember" xlink:label="rvt_BloomEnergyCorp8212ClassAMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_BloomEnergyCorp8212ClassAMember" xlink:to="rvt_BloomEnergyCorp8212ClassAMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_BloomEnergyCorp8212ClassAMember_lbl" xml:lang="en-US">Bloom Energy Corp 8212 Class A [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_FabrinetMember" xlink:label="rvt_FabrinetMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_FabrinetMember" xlink:to="rvt_FabrinetMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_FabrinetMember_lbl" xml:lang="en-US">Fabrinet [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_IonQIncMember" xlink:label="rvt_IonQIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_IonQIncMember" xlink:to="rvt_IonQIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_IonQIncMember_lbl" xml:lang="en-US">Ion Q Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_KratosDefenseampSecuritySolutionsIncMember" xlink:label="rvt_KratosDefenseampSecuritySolutionsIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_KratosDefenseampSecuritySolutionsIncMember" xlink:to="rvt_KratosDefenseampSecuritySolutionsIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_KratosDefenseampSecuritySolutionsIncMember_lbl" xml:lang="en-US">Kratos Defenseamp Security Solutions Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000032290Member" xlink:label="rvt_C000032290Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000032290Member" xlink:to="rvt_C000032290Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000032290Member_lbl" xml:lang="en-US">Russell 2000(R) 2x Strategy Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_Russell2000sup174sup2xStrategyFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_Russell2000sup174sup2xStrategyFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_Russell2000sup174sup2xStrategyFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_Russell2000sup174sup2xStrategyFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_Russell2000sup174sup2xStrategyFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, Russell 2000 2x Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_Russell2000sup174sup2xStrategyFundVariableAnnuityRussell2000IndexMember" xlink:label="rvt_Russell2000sup174sup2xStrategyFundVariableAnnuityRussell2000IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_Russell2000sup174sup2xStrategyFundVariableAnnuityRussell2000IndexMember" xlink:to="rvt_Russell2000sup174sup2xStrategyFundVariableAnnuityRussell2000IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_Russell2000sup174sup2xStrategyFundVariableAnnuityRussell2000IndexMember_lbl" xml:lang="en-US">Russell 2000 Index, Russell 2000 2x Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010415Member" xlink:label="rvt_C000010415Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010415Member" xlink:to="rvt_C000010415Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010415Member_lbl" xml:lang="en-US">Inverse Russell 2000(R) Strategy Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_InverseRussell2000sup174supStrategyFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_InverseRussell2000sup174supStrategyFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_InverseRussell2000sup174supStrategyFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_InverseRussell2000sup174supStrategyFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_InverseRussell2000sup174supStrategyFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, Inverse Russell 2000 Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_InverseRussell2000sup174supStrategyFundVariableAnnuityRussell2000IndexMember" xlink:label="rvt_InverseRussell2000sup174supStrategyFundVariableAnnuityRussell2000IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_InverseRussell2000sup174supStrategyFundVariableAnnuityRussell2000IndexMember" xlink:to="rvt_InverseRussell2000sup174supStrategyFundVariableAnnuityRussell2000IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_InverseRussell2000sup174supStrategyFundVariableAnnuityRussell2000IndexMember_lbl" xml:lang="en-US">Russell 2000 Index, Inverse Russell 2000 Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010401Member" xlink:label="rvt_C000010401Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010401Member" xlink:to="rvt_C000010401Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010401Member_lbl" xml:lang="en-US">Nova Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_NovaFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_NovaFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_NovaFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_NovaFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_NovaFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, Nova Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_SampP500IndexEquityMiniFuturesContractsMember" xlink:label="rvt_SampP500IndexEquityMiniFuturesContractsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_SampP500IndexEquityMiniFuturesContractsMember" xlink:to="rvt_SampP500IndexEquityMiniFuturesContractsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_SampP500IndexEquityMiniFuturesContractsMember_lbl" xml:lang="en-US">Samp P 500 Index Equity Mini Futures Contracts [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_SampP500IndexEquitySwapAgreementsMember" xlink:label="rvt_SampP500IndexEquitySwapAgreementsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_SampP500IndexEquitySwapAgreementsMember" xlink:to="rvt_SampP500IndexEquitySwapAgreementsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_SampP500IndexEquitySwapAgreementsMember_lbl" xml:lang="en-US">Samp P 500 Index Equity Swap Agreements [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010420Member" xlink:label="rvt_C000010420Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010420Member" xlink:to="rvt_C000010420Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010420Member_lbl" xml:lang="en-US">S&amp;P 500 2x Strategy Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_SampP500sup174sup2xStrategyFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_SampP500sup174sup2xStrategyFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_SampP500sup174sup2xStrategyFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_SampP500sup174sup2xStrategyFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_SampP500sup174sup2xStrategyFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, S&amp;P 500 2x Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010423Member" xlink:label="rvt_C000010423Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010423Member" xlink:to="rvt_C000010423Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010423Member_lbl" xml:lang="en-US">Inverse S&amp;P 500 Strategy Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_InverseSampP500sup174supStrategyFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_InverseSampP500sup174supStrategyFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_InverseSampP500sup174supStrategyFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_InverseSampP500sup174supStrategyFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_InverseSampP500sup174supStrategyFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, Inverse S&amp;P 500 Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010408Member" xlink:label="rvt_C000010408Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010408Member" xlink:to="rvt_C000010408Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010408Member_lbl" xml:lang="en-US">S&amp;P 500 Pure Growth Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_SampP500sup174supPureGrowthFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_SampP500sup174supPureGrowthFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_SampP500sup174supPureGrowthFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_SampP500sup174supPureGrowthFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_SampP500sup174supPureGrowthFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, S&amp;P 500 Pure Growth Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_SampP500sup174supPureGrowthFundVariableAnnuitySampP500PureGrowthIndexMember" xlink:label="rvt_SampP500sup174supPureGrowthFundVariableAnnuitySampP500PureGrowthIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_SampP500sup174supPureGrowthFundVariableAnnuitySampP500PureGrowthIndexMember" xlink:to="rvt_SampP500sup174supPureGrowthFundVariableAnnuitySampP500PureGrowthIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_SampP500sup174supPureGrowthFundVariableAnnuitySampP500PureGrowthIndexMember_lbl" xml:lang="en-US">S&amp;P 500 Pure Growth Index, S&amp;P 500 Pure Growth Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_AppLovinCorp8212ClassAMember" xlink:label="rvt_AppLovinCorp8212ClassAMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_AppLovinCorp8212ClassAMember" xlink:to="rvt_AppLovinCorp8212ClassAMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_AppLovinCorp8212ClassAMember_lbl" xml:lang="en-US">App Lovin Corp 8212 Class A [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ComfortSystemsUSAIncMember" xlink:label="rvt_ComfortSystemsUSAIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ComfortSystemsUSAIncMember" xlink:to="rvt_ComfortSystemsUSAIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ComfortSystemsUSAIncMember_lbl" xml:lang="en-US">Comfort Systems U S A Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_AmphenolCorp8212ClassAMember" xlink:label="rvt_AmphenolCorp8212ClassAMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_AmphenolCorp8212ClassAMember" xlink:to="rvt_AmphenolCorp8212ClassAMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_AmphenolCorp8212ClassAMember_lbl" xml:lang="en-US">Amphenol Corp 8212 Class A [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_HowmetAerospaceIncMember" xlink:label="rvt_HowmetAerospaceIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_HowmetAerospaceIncMember" xlink:to="rvt_HowmetAerospaceIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_HowmetAerospaceIncMember_lbl" xml:lang="en-US">Howmet Aerospace Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_TKOGroupHoldingsIncMember" xlink:label="rvt_TKOGroupHoldingsIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_TKOGroupHoldingsIncMember" xlink:to="rvt_TKOGroupHoldingsIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_TKOGroupHoldingsIncMember_lbl" xml:lang="en-US">T K O Group Holdings Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_FirstSolarIncMember" xlink:label="rvt_FirstSolarIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_FirstSolarIncMember" xlink:to="rvt_FirstSolarIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_FirstSolarIncMember_lbl" xml:lang="en-US">First Solar Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_RobinhoodMarketsInc8212ClassAMember" xlink:label="rvt_RobinhoodMarketsInc8212ClassAMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_RobinhoodMarketsInc8212ClassAMember" xlink:to="rvt_RobinhoodMarketsInc8212ClassAMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_RobinhoodMarketsInc8212ClassAMember_lbl" xml:lang="en-US">Robinhood Markets Inc 8212 Class A [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010407Member" xlink:label="rvt_C000010407Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010407Member" xlink:to="rvt_C000010407Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010407Member_lbl" xml:lang="en-US">S&amp;P 500 Pure Value Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_SampP500sup174supPureValueFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_SampP500sup174supPureValueFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_SampP500sup174supPureValueFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_SampP500sup174supPureValueFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_SampP500sup174supPureValueFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, S&amp;P 500 Pure Value Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_SampP500sup174supPureValueFundVariableAnnuitySampP500PureValueIndexMember" xlink:label="rvt_SampP500sup174supPureValueFundVariableAnnuitySampP500PureValueIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_SampP500sup174supPureValueFundVariableAnnuitySampP500PureValueIndexMember" xlink:to="rvt_SampP500sup174supPureValueFundVariableAnnuitySampP500PureValueIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_SampP500sup174supPureValueFundVariableAnnuitySampP500PureValueIndexMember_lbl" xml:lang="en-US">S&amp;P 500 Pure Value Index, S&amp;P 500 Pure Value Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_BasicMaterialsMember" xlink:label="rvt_BasicMaterialsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_BasicMaterialsMember" xlink:to="rvt_BasicMaterialsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_BasicMaterialsMember_lbl" xml:lang="en-US">Basic Materials [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_BungeGlobalSAMember" xlink:label="rvt_BungeGlobalSAMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_BungeGlobalSAMember" xlink:to="rvt_BungeGlobalSAMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_BungeGlobalSAMember_lbl" xml:lang="en-US">Bunge Global S A [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_MosaicCoMember" xlink:label="rvt_MosaicCoMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_MosaicCoMember" xlink:to="rvt_MosaicCoMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_MosaicCoMember_lbl" xml:lang="en-US">Mosaic Co [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_CenteneCorpMember" xlink:label="rvt_CenteneCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_CenteneCorpMember" xlink:to="rvt_CenteneCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_CenteneCorpMember_lbl" xml:lang="en-US">Centene Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_MolinaHealthcareIncMember" xlink:label="rvt_MolinaHealthcareIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_MolinaHealthcareIncMember" xlink:to="rvt_MolinaHealthcareIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_MolinaHealthcareIncMember_lbl" xml:lang="en-US">Molina Healthcare Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_TysonFoodsInc8212ClassAMember" xlink:label="rvt_TysonFoodsInc8212ClassAMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_TysonFoodsInc8212ClassAMember" xlink:to="rvt_TysonFoodsInc8212ClassAMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_TysonFoodsInc8212ClassAMember_lbl" xml:lang="en-US">Tyson Foods Inc 8212 Class A [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ArcherDanielsMidlandCoMember" xlink:label="rvt_ArcherDanielsMidlandCoMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ArcherDanielsMidlandCoMember" xlink:to="rvt_ArcherDanielsMidlandCoMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ArcherDanielsMidlandCoMember_lbl" xml:lang="en-US">Archer Daniels Midland Co [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_CignaGroupMember" xlink:label="rvt_CignaGroupMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_CignaGroupMember" xlink:to="rvt_CignaGroupMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_CignaGroupMember_lbl" xml:lang="en-US">Cigna Group [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_CVSHealthCorpMember" xlink:label="rvt_CVSHealthCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_CVSHealthCorpMember" xlink:to="rvt_CVSHealthCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_CVSHealthCorpMember_lbl" xml:lang="en-US">C V S Health Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010413Member" xlink:label="rvt_C000010413Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010413Member" xlink:to="rvt_C000010413Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010413Member_lbl" xml:lang="en-US">S&amp;P MidCap 400 Pure Growth Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_SampPMidCap400sup174supPureGrowthFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_SampPMidCap400sup174supPureGrowthFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_SampPMidCap400sup174supPureGrowthFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_SampPMidCap400sup174supPureGrowthFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_SampPMidCap400sup174supPureGrowthFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, S&amp;P 400 Pure Growth Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_SampPMidCap400sup174supPureGrowthFundVariableAnnuitySampPMidCap400PureGrowthIndexMember" xlink:label="rvt_SampPMidCap400sup174supPureGrowthFundVariableAnnuitySampPMidCap400PureGrowthIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_SampPMidCap400sup174supPureGrowthFundVariableAnnuitySampPMidCap400PureGrowthIndexMember" xlink:to="rvt_SampPMidCap400sup174supPureGrowthFundVariableAnnuitySampPMidCap400PureGrowthIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_SampPMidCap400sup174supPureGrowthFundVariableAnnuitySampPMidCap400PureGrowthIndexMember_lbl" xml:lang="en-US">S&amp;P MidCap 400 Pure Growth Index, S&amp;P 400 Pure Growth Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_MedpaceHoldingsIncMember" xlink:label="rvt_MedpaceHoldingsIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_MedpaceHoldingsIncMember" xlink:to="rvt_MedpaceHoldingsIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_MedpaceHoldingsIncMember_lbl" xml:lang="en-US">Medpace Holdings Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_HalozymeTherapeuticsIncMember" xlink:label="rvt_HalozymeTherapeuticsIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_HalozymeTherapeuticsIncMember" xlink:to="rvt_HalozymeTherapeuticsIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_HalozymeTherapeuticsIncMember_lbl" xml:lang="en-US">Halozyme Therapeutics Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_CelsiusHoldingsIncMember" xlink:label="rvt_CelsiusHoldingsIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_CelsiusHoldingsIncMember" xlink:to="rvt_CelsiusHoldingsIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_CelsiusHoldingsIncMember_lbl" xml:lang="en-US">Celsius Holdings Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_TalenEnergyCorpMember" xlink:label="rvt_TalenEnergyCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_TalenEnergyCorpMember" xlink:to="rvt_TalenEnergyCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_TalenEnergyCorpMember_lbl" xml:lang="en-US">Talen Energy Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_WoodwardIncMember" xlink:label="rvt_WoodwardIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_WoodwardIncMember" xlink:to="rvt_WoodwardIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_WoodwardIncMember_lbl" xml:lang="en-US">Woodward Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_HeclaMiningCoMember" xlink:label="rvt_HeclaMiningCoMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_HeclaMiningCoMember" xlink:to="rvt_HeclaMiningCoMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_HeclaMiningCoMember_lbl" xml:lang="en-US">Hecla Mining Co [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_AeroVironmentIncMember" xlink:label="rvt_AeroVironmentIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_AeroVironmentIncMember" xlink:to="rvt_AeroVironmentIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_AeroVironmentIncMember_lbl" xml:lang="en-US">Aero Vironment Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_FiveBelowIncMember" xlink:label="rvt_FiveBelowIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_FiveBelowIncMember" xlink:to="rvt_FiveBelowIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_FiveBelowIncMember_lbl" xml:lang="en-US">Five Below Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_RambusIncMember" xlink:label="rvt_RambusIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_RambusIncMember" xlink:to="rvt_RambusIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_RambusIncMember_lbl" xml:lang="en-US">Rambus Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010411Member" xlink:label="rvt_C000010411Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010411Member" xlink:to="rvt_C000010411Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010411Member_lbl" xml:lang="en-US">S&amp;P MidCap 400 Pure Value Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_SampPMidCap400sup174supPureValueFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_SampPMidCap400sup174supPureValueFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_SampPMidCap400sup174supPureValueFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_SampPMidCap400sup174supPureValueFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_SampPMidCap400sup174supPureValueFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, S&amp;P 400 Pure Value Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_SampPMidCap400sup174supPureValueFundVariableAnnuitySampPMidCap400PureValueIndexMember" xlink:label="rvt_SampPMidCap400sup174supPureValueFundVariableAnnuitySampPMidCap400PureValueIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_SampPMidCap400sup174supPureValueFundVariableAnnuitySampPMidCap400PureValueIndexMember" xlink:to="rvt_SampPMidCap400sup174supPureValueFundVariableAnnuitySampPMidCap400PureValueIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_SampPMidCap400sup174supPureValueFundVariableAnnuitySampPMidCap400PureValueIndexMember_lbl" xml:lang="en-US">S&amp;P MidCap 400 Pure Value Index, S&amp;P 400 Pure Value Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ConcentrixCorpMember" xlink:label="rvt_ConcentrixCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ConcentrixCorpMember" xlink:to="rvt_ConcentrixCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ConcentrixCorpMember_lbl" xml:lang="en-US">Concentrix Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_AvnetIncMember" xlink:label="rvt_AvnetIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_AvnetIncMember" xlink:to="rvt_AvnetIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_AvnetIncMember_lbl" xml:lang="en-US">Avnet Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ArrowElectronicsIncMember" xlink:label="rvt_ArrowElectronicsIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ArrowElectronicsIncMember" xlink:to="rvt_ArrowElectronicsIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ArrowElectronicsIncMember_lbl" xml:lang="en-US">Arrow Electronics Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_BrighthouseFinancialIncMember" xlink:label="rvt_BrighthouseFinancialIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_BrighthouseFinancialIncMember" xlink:to="rvt_BrighthouseFinancialIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_BrighthouseFinancialIncMember_lbl" xml:lang="en-US">Brighthouse Financial Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_LearCorpMember" xlink:label="rvt_LearCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_LearCorpMember" xlink:to="rvt_LearCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_LearCorpMember_lbl" xml:lang="en-US">Lear Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_LithiaMotorsInc8212ClassAMember" xlink:label="rvt_LithiaMotorsInc8212ClassAMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_LithiaMotorsInc8212ClassAMember" xlink:to="rvt_LithiaMotorsInc8212ClassAMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_LithiaMotorsInc8212ClassAMember_lbl" xml:lang="en-US">Lithia Motors Inc 8212 Class A [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_PBFEnergyInc8212ClassAMember" xlink:label="rvt_PBFEnergyInc8212ClassAMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_PBFEnergyInc8212ClassAMember" xlink:to="rvt_PBFEnergyInc8212ClassAMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_PBFEnergyInc8212ClassAMember_lbl" xml:lang="en-US">P B F Energy Inc 8212 Class A [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_HFSinclairCorpMember" xlink:label="rvt_HFSinclairCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_HFSinclairCorpMember" xlink:to="rvt_HFSinclairCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_HFSinclairCorpMember_lbl" xml:lang="en-US">H F Sinclair Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_MacysIncMember" xlink:label="rvt_MacysIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_MacysIncMember" xlink:to="rvt_MacysIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_MacysIncMember_lbl" xml:lang="en-US">Macys Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_CivitasResourcesIncMember" xlink:label="rvt_CivitasResourcesIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_CivitasResourcesIncMember" xlink:to="rvt_CivitasResourcesIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_CivitasResourcesIncMember_lbl" xml:lang="en-US">Civitas Resources Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010410Member" xlink:label="rvt_C000010410Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010410Member" xlink:to="rvt_C000010410Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010410Member_lbl" xml:lang="en-US">S&amp;P SmallCap 600 Pure Growth Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_SampPSmallCap600sup174supPureGrowthFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_SampPSmallCap600sup174supPureGrowthFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_SampPSmallCap600sup174supPureGrowthFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_SampPSmallCap600sup174supPureGrowthFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_SampPSmallCap600sup174supPureGrowthFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, S&amp;P 600 Pure Growth Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_SampPSmallCap600sup174supPureGrowthFundVariableAnnuitySampPSmallCap600PureGrowthIndexMember" xlink:label="rvt_SampPSmallCap600sup174supPureGrowthFundVariableAnnuitySampPSmallCap600PureGrowthIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_SampPSmallCap600sup174supPureGrowthFundVariableAnnuitySampPSmallCap600PureGrowthIndexMember" xlink:to="rvt_SampPSmallCap600sup174supPureGrowthFundVariableAnnuitySampPSmallCap600PureGrowthIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_SampPSmallCap600sup174supPureGrowthFundVariableAnnuitySampPSmallCap600PureGrowthIndexMember_lbl" xml:lang="en-US">S&amp;P SmallCap 600 Pure Growth Index, S&amp;P 600 Pure Growth Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_PTCTherapeuticsIncMember" xlink:label="rvt_PTCTherapeuticsIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_PTCTherapeuticsIncMember" xlink:to="rvt_PTCTherapeuticsIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_PTCTherapeuticsIncMember_lbl" xml:lang="en-US">P T C Therapeutics Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ProgynyIncMember" xlink:label="rvt_ProgynyIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ProgynyIncMember" xlink:to="rvt_ProgynyIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ProgynyIncMember_lbl" xml:lang="en-US">Progyny Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ACMResearchInc8212ClassAMember" xlink:label="rvt_ACMResearchInc8212ClassAMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ACMResearchInc8212ClassAMember" xlink:to="rvt_ACMResearchInc8212ClassAMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ACMResearchInc8212ClassAMember_lbl" xml:lang="en-US">A C M Research Inc 8212 Class A [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ARMOURResidentialIncREITMember" xlink:label="rvt_ARMOURResidentialIncREITMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ARMOURResidentialIncREITMember" xlink:to="rvt_ARMOURResidentialIncREITMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ARMOURResidentialIncREITMember_lbl" xml:lang="en-US">A R M O U R Residential Inc R E I T [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ACADIAPharmaceuticalsIncMember" xlink:label="rvt_ACADIAPharmaceuticalsIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ACADIAPharmaceuticalsIncMember" xlink:to="rvt_ACADIAPharmaceuticalsIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ACADIAPharmaceuticalsIncMember_lbl" xml:lang="en-US">A C A D I A Pharmaceuticals Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ArrowheadPharmaceuticalsIncMember" xlink:label="rvt_ArrowheadPharmaceuticalsIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ArrowheadPharmaceuticalsIncMember" xlink:to="rvt_ArrowheadPharmaceuticalsIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ArrowheadPharmaceuticalsIncMember_lbl" xml:lang="en-US">Arrowhead Pharmaceuticals Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ProtagonistTherapeuticsIncMember" xlink:label="rvt_ProtagonistTherapeuticsIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ProtagonistTherapeuticsIncMember" xlink:to="rvt_ProtagonistTherapeuticsIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ProtagonistTherapeuticsIncMember_lbl" xml:lang="en-US">Protagonist Therapeutics Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_TransMedicsGroupIncMember" xlink:label="rvt_TransMedicsGroupIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_TransMedicsGroupIncMember" xlink:to="rvt_TransMedicsGroupIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_TransMedicsGroupIncMember_lbl" xml:lang="en-US">Trans Medics Group Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_AdamasTrustIncMember" xlink:label="rvt_AdamasTrustIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_AdamasTrustIncMember" xlink:to="rvt_AdamasTrustIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_AdamasTrustIncMember_lbl" xml:lang="en-US">Adamas Trust Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_SiriusPointLtdMember" xlink:label="rvt_SiriusPointLtdMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_SiriusPointLtdMember" xlink:to="rvt_SiriusPointLtdMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_SiriusPointLtdMember_lbl" xml:lang="en-US">Sirius Point Ltd [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010409Member" xlink:label="rvt_C000010409Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010409Member" xlink:to="rvt_C000010409Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010409Member_lbl" xml:lang="en-US">S&amp;P SmallCap 600 Pure Value Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_SampPSmallCap600sup174supPureValueFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_SampPSmallCap600sup174supPureValueFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_SampPSmallCap600sup174supPureValueFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_SampPSmallCap600sup174supPureValueFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_SampPSmallCap600sup174supPureValueFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, S&amp;P 600 Pure Value Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_SampPSmallCap600sup174supPureValueFundVariableAnnuitySampPSmallCap600PureValueIndexMember" xlink:label="rvt_SampPSmallCap600sup174supPureValueFundVariableAnnuitySampPSmallCap600PureValueIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_SampPSmallCap600sup174supPureValueFundVariableAnnuitySampPSmallCap600PureValueIndexMember" xlink:to="rvt_SampPSmallCap600sup174supPureValueFundVariableAnnuitySampPSmallCap600PureValueIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_SampPSmallCap600sup174supPureValueFundVariableAnnuitySampPSmallCap600PureValueIndexMember_lbl" xml:lang="en-US">S&amp;P SmallCap 600 Pure Value Index, S&amp;P 600 Pure Value Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ManpowerGroupIncMember" xlink:label="rvt_ManpowerGroupIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ManpowerGroupIncMember" xlink:to="rvt_ManpowerGroupIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ManpowerGroupIncMember_lbl" xml:lang="en-US">Manpower Group Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_SunCokeEnergyIncMember" xlink:label="rvt_SunCokeEnergyIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_SunCokeEnergyIncMember" xlink:to="rvt_SunCokeEnergyIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_SunCokeEnergyIncMember_lbl" xml:lang="en-US">Sun Coke Energy Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_DXCTechnologyCoMember" xlink:label="rvt_DXCTechnologyCoMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_DXCTechnologyCoMember" xlink:to="rvt_DXCTechnologyCoMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_DXCTechnologyCoMember_lbl" xml:lang="en-US">D X C Technology Co [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_MillerKnollIncMember" xlink:label="rvt_MillerKnollIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_MillerKnollIncMember" xlink:to="rvt_MillerKnollIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_MillerKnollIncMember_lbl" xml:lang="en-US">Miller Knoll Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_NewellBrandsIncMember" xlink:label="rvt_NewellBrandsIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_NewellBrandsIncMember" xlink:to="rvt_NewellBrandsIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_NewellBrandsIncMember_lbl" xml:lang="en-US">Newell Brands Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_EdgewellPersonalCareCoMember" xlink:label="rvt_EdgewellPersonalCareCoMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_EdgewellPersonalCareCoMember" xlink:to="rvt_EdgewellPersonalCareCoMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_EdgewellPersonalCareCoMember_lbl" xml:lang="en-US">Edgewell Personal Care Co [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_KohlsCorpMember" xlink:label="rvt_KohlsCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_KohlsCorpMember" xlink:to="rvt_KohlsCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_KohlsCorpMember_lbl" xml:lang="en-US">Kohls Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_MarineMaxIncMember" xlink:label="rvt_MarineMaxIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_MarineMaxIncMember" xlink:to="rvt_MarineMaxIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_MarineMaxIncMember_lbl" xml:lang="en-US">Marine Max Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_PerrigoCompanyplcMember" xlink:label="rvt_PerrigoCompanyplcMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_PerrigoCompanyplcMember" xlink:to="rvt_PerrigoCompanyplcMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_PerrigoCompanyplcMember_lbl" xml:lang="en-US">Perrigo Companyplc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_WinnebagoIndustriesIncMember" xlink:label="rvt_WinnebagoIndustriesIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_WinnebagoIndustriesIncMember" xlink:to="rvt_WinnebagoIndustriesIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_WinnebagoIndustriesIncMember_lbl" xml:lang="en-US">Winnebago Industries Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010390Member" xlink:label="rvt_C000010390Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010390Member" xlink:to="rvt_C000010390Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010390Member_lbl" xml:lang="en-US">Government Long Bond 1.2x Strategy Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_GovernmentLongBond12xStrategyFundVariableAnnuityBloombergUSAggregateBondIndexMember" xlink:label="rvt_GovernmentLongBond12xStrategyFundVariableAnnuityBloombergUSAggregateBondIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_GovernmentLongBond12xStrategyFundVariableAnnuityBloombergUSAggregateBondIndexMember" xlink:to="rvt_GovernmentLongBond12xStrategyFundVariableAnnuityBloombergUSAggregateBondIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_GovernmentLongBond12xStrategyFundVariableAnnuityBloombergUSAggregateBondIndexMember_lbl" xml:lang="en-US">Bloomberg U.S. Aggregate Bond Index, Government Long Bond 1.2x Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_GovernmentLongBond12xStrategyFundVariableAnnuityBloombergUSTreasury30YearBellwetherIndexMember" xlink:label="rvt_GovernmentLongBond12xStrategyFundVariableAnnuityBloombergUSTreasury30YearBellwetherIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_GovernmentLongBond12xStrategyFundVariableAnnuityBloombergUSTreasury30YearBellwetherIndexMember" xlink:to="rvt_GovernmentLongBond12xStrategyFundVariableAnnuityBloombergUSTreasury30YearBellwetherIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_GovernmentLongBond12xStrategyFundVariableAnnuityBloombergUSTreasury30YearBellwetherIndexMember_lbl" xml:lang="en-US">Bloomberg U.S. Treasury 30 Year Bellwether Index, Government Long Bond 1.2x Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_InterestRateFuturesContractsMember" xlink:label="rvt_InterestRateFuturesContractsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_InterestRateFuturesContractsMember" xlink:to="rvt_InterestRateFuturesContractsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_InterestRateFuturesContractsMember_lbl" xml:lang="en-US">Interest Rate Futures Contracts [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_USGovernmentSecuritiesMember" xlink:label="rvt_USGovernmentSecuritiesMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_USGovernmentSecuritiesMember" xlink:to="rvt_USGovernmentSecuritiesMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_USGovernmentSecuritiesMember_lbl" xml:lang="en-US">U S Government Securities [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_USTreasuryBondsMember" xlink:label="rvt_USTreasuryBondsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_USTreasuryBondsMember" xlink:to="rvt_USTreasuryBondsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_USTreasuryBondsMember_lbl" xml:lang="en-US">U S Treasury Bonds [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010404Member" xlink:label="rvt_C000010404Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010404Member" xlink:to="rvt_C000010404Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010404Member_lbl" xml:lang="en-US">Inverse Government Long Bond Strategy Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_InverseGovernmentLongBondStrategyFundVariableAnnuityBloombergUSAggregateBondIndexMember" xlink:label="rvt_InverseGovernmentLongBondStrategyFundVariableAnnuityBloombergUSAggregateBondIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_InverseGovernmentLongBondStrategyFundVariableAnnuityBloombergUSAggregateBondIndexMember" xlink:to="rvt_InverseGovernmentLongBondStrategyFundVariableAnnuityBloombergUSAggregateBondIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_InverseGovernmentLongBondStrategyFundVariableAnnuityBloombergUSAggregateBondIndexMember_lbl" xml:lang="en-US">Bloomberg U.S. Aggregate Bond Index, Inverse Government Long Bond Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_InverseGovernmentLongBondStrategyFundVariableAnnuityBloombergUSTreasury30YearBellwetherIndexMember" xlink:label="rvt_InverseGovernmentLongBondStrategyFundVariableAnnuityBloombergUSTreasury30YearBellwetherIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_InverseGovernmentLongBondStrategyFundVariableAnnuityBloombergUSTreasury30YearBellwetherIndexMember" xlink:to="rvt_InverseGovernmentLongBondStrategyFundVariableAnnuityBloombergUSTreasury30YearBellwetherIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_InverseGovernmentLongBondStrategyFundVariableAnnuityBloombergUSTreasury30YearBellwetherIndexMember_lbl" xml:lang="en-US">Bloomberg U.S. Treasury 30 Year Bellwether Index, Inverse Government Long Bond Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_USTreasuryUltraLongBondInterestRateFuturesContractsMember" xlink:label="rvt_USTreasuryUltraLongBondInterestRateFuturesContractsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_USTreasuryUltraLongBondInterestRateFuturesContractsMember" xlink:to="rvt_USTreasuryUltraLongBondInterestRateFuturesContractsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_USTreasuryUltraLongBondInterestRateFuturesContractsMember_lbl" xml:lang="en-US">U S Treasury Ultra Long Bond Interest Rate Futures Contracts [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_USGovernmentSecuritiesSoldShortMember" xlink:label="rvt_USGovernmentSecuritiesSoldShortMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_USGovernmentSecuritiesSoldShortMember" xlink:to="rvt_USGovernmentSecuritiesSoldShortMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_USGovernmentSecuritiesSoldShortMember_lbl" xml:lang="en-US">U S Government Securities Sold Short [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000046626Member" xlink:label="rvt_C000046626Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000046626Member" xlink:to="rvt_C000046626Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000046626Member_lbl" xml:lang="en-US">High Yield Strategy Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_HighYieldStrategyFundVariableAnnuityBloombergUSAggregateBondIndexMember" xlink:label="rvt_HighYieldStrategyFundVariableAnnuityBloombergUSAggregateBondIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_HighYieldStrategyFundVariableAnnuityBloombergUSAggregateBondIndexMember" xlink:to="rvt_HighYieldStrategyFundVariableAnnuityBloombergUSAggregateBondIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_HighYieldStrategyFundVariableAnnuityBloombergUSAggregateBondIndexMember_lbl" xml:lang="en-US">Bloomberg U.S. Aggregate Bond Index, High Yield Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_HighYieldStrategyFundVariableAnnuityBloombergUSCorporateHighYieldIndexMember" xlink:label="rvt_HighYieldStrategyFundVariableAnnuityBloombergUSCorporateHighYieldIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_HighYieldStrategyFundVariableAnnuityBloombergUSCorporateHighYieldIndexMember" xlink:to="rvt_HighYieldStrategyFundVariableAnnuityBloombergUSCorporateHighYieldIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_HighYieldStrategyFundVariableAnnuityBloombergUSCorporateHighYieldIndexMember_lbl" xml:lang="en-US">Bloomberg U.S. Corporate High Yield Index, High Yield Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_CDXNAHY45V1IndexCreditDefaultSwapAgreementsProtectionSoldMember" xlink:label="rvt_CDXNAHY45V1IndexCreditDefaultSwapAgreementsProtectionSoldMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_CDXNAHY45V1IndexCreditDefaultSwapAgreementsProtectionSoldMember" xlink:to="rvt_CDXNAHY45V1IndexCreditDefaultSwapAgreementsProtectionSoldMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_CDXNAHY45V1IndexCreditDefaultSwapAgreementsProtectionSoldMember_lbl" xml:lang="en-US">C D X N A H Y 45 V 1 Index Credit Default Swap Agreements Protection Sold [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ISharesiBoxxHighYieldCorporateBondETFMember" xlink:label="rvt_ISharesiBoxxHighYieldCorporateBondETFMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ISharesiBoxxHighYieldCorporateBondETFMember" xlink:to="rvt_ISharesiBoxxHighYieldCorporateBondETFMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ISharesiBoxxHighYieldCorporateBondETFMember_lbl" xml:lang="en-US">I Sharesi Boxx High Yield Corporate Bond E T F [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_StateStreetSPDRBloombergHighYieldBondETFMember" xlink:label="rvt_StateStreetSPDRBloombergHighYieldBondETFMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_StateStreetSPDRBloombergHighYieldBondETFMember" xlink:to="rvt_StateStreetSPDRBloombergHighYieldBondETFMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_StateStreetSPDRBloombergHighYieldBondETFMember_lbl" xml:lang="en-US">State Street S P D R Bloomberg High Yield Bond E T F [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ISharesiBoxxHighYieldCorporateBondETFSwapAgreementsMember" xlink:label="rvt_ISharesiBoxxHighYieldCorporateBondETFSwapAgreementsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ISharesiBoxxHighYieldCorporateBondETFSwapAgreementsMember" xlink:to="rvt_ISharesiBoxxHighYieldCorporateBondETFSwapAgreementsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ISharesiBoxxHighYieldCorporateBondETFSwapAgreementsMember_lbl" xml:lang="en-US">I Sharesi Boxx High Yield Corporate Bond E T F Swap Agreements [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_SPDRBloombergHighYieldBondETFSwapAgreementsMember" xlink:label="rvt_SPDRBloombergHighYieldBondETFSwapAgreementsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_SPDRBloombergHighYieldBondETFSwapAgreementsMember" xlink:to="rvt_SPDRBloombergHighYieldBondETFSwapAgreementsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_SPDRBloombergHighYieldBondETFSwapAgreementsMember_lbl" xml:lang="en-US">S P D R Bloomberg High Yield Bond E T F Swap Agreements [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010418Member" xlink:label="rvt_C000010418Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010418Member" xlink:to="rvt_C000010418Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010418Member_lbl" xml:lang="en-US">Europe 1.25x Strategy Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_Europe125xStrategyFundVariableAnnuityMSCIWorldexUSIndexMember" xlink:label="rvt_Europe125xStrategyFundVariableAnnuityMSCIWorldexUSIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_Europe125xStrategyFundVariableAnnuityMSCIWorldexUSIndexMember" xlink:to="rvt_Europe125xStrategyFundVariableAnnuityMSCIWorldexUSIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_Europe125xStrategyFundVariableAnnuityMSCIWorldexUSIndexMember_lbl" xml:lang="en-US">MSCI World ex US Index, Europe 1.25x Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_Europe125xStrategyFundVariableAnnuitySTOXXEurope50IndexMember" xlink:label="rvt_Europe125xStrategyFundVariableAnnuitySTOXXEurope50IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_Europe125xStrategyFundVariableAnnuitySTOXXEurope50IndexMember" xlink:to="rvt_Europe125xStrategyFundVariableAnnuitySTOXXEurope50IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_Europe125xStrategyFundVariableAnnuitySTOXXEurope50IndexMember_lbl" xml:lang="en-US">STOXX Europe 50 Index, Europe 1.25x Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_STOXXEurope50IndexEquityFuturesContractsMember" xlink:label="rvt_STOXXEurope50IndexEquityFuturesContractsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_STOXXEurope50IndexEquityFuturesContractsMember" xlink:to="rvt_STOXXEurope50IndexEquityFuturesContractsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_STOXXEurope50IndexEquityFuturesContractsMember_lbl" xml:lang="en-US">S T O X X Europe 50 Index Equity Futures Contracts [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_EuroFXFuturesContractsMember" xlink:label="rvt_EuroFXFuturesContractsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_EuroFXFuturesContractsMember" xlink:to="rvt_EuroFXFuturesContractsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_EuroFXFuturesContractsMember_lbl" xml:lang="en-US">Euro F X Futures Contracts [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_US" xlink:label="country_US" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_US" xlink:to="country_US_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="country_US_lbl" xml:lang="en-US">UNITED STATES</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_FR" xlink:label="country_FR" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_FR" xlink:to="country_FR_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="country_FR_lbl" xml:lang="en-US">FRANCE</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_GB" xlink:label="country_GB" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_GB" xlink:to="country_GB_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="country_GB_lbl" xml:lang="en-US">UNITED KINGDOM</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_CH" xlink:label="country_CH" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_CH" xlink:to="country_CH_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="country_CH_lbl" xml:lang="en-US">SWITZERLAND</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_DE" xlink:label="country_DE" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_DE" xlink:to="country_DE_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="country_DE_lbl" xml:lang="en-US">GERMANY</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_NL" xlink:label="country_NL" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_NL" xlink:to="country_NL_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="country_NL_lbl" xml:lang="en-US">NETHERLANDS</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_ES" xlink:label="country_ES" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_ES" xlink:to="country_ES_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="country_ES_lbl" xml:lang="en-US">SPAIN</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_TotalInvestmentsMember" xlink:label="rvt_TotalInvestmentsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_TotalInvestmentsMember" xlink:to="rvt_TotalInvestmentsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_TotalInvestmentsMember_lbl" xml:lang="en-US">Total Investments [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ASMLHoldingNV8212ClassGMember" xlink:label="rvt_ASMLHoldingNV8212ClassGMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ASMLHoldingNV8212ClassGMember" xlink:to="rvt_ASMLHoldingNV8212ClassGMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ASMLHoldingNV8212ClassGMember_lbl" xml:lang="en-US">A S M L Holding N V 8212 Class G [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_RocheHoldingAGADRMember" xlink:label="rvt_RocheHoldingAGADRMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_RocheHoldingAGADRMember" xlink:to="rvt_RocheHoldingAGADRMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_RocheHoldingAGADRMember_lbl" xml:lang="en-US">Roche Holding A G A D R [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_HSBCHoldingsplcADRMember" xlink:label="rvt_HSBCHoldingsplcADRMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_HSBCHoldingsplcADRMember" xlink:to="rvt_HSBCHoldingsplcADRMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_HSBCHoldingsplcADRMember_lbl" xml:lang="en-US">H S B C Holdingsplc A D R [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_NovartisAGADRMember" xlink:label="rvt_NovartisAGADRMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_NovartisAGADRMember" xlink:to="rvt_NovartisAGADRMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_NovartisAGADRMember_lbl" xml:lang="en-US">Novartis A G A D R [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_NestleSAADRMember" xlink:label="rvt_NestleSAADRMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_NestleSAADRMember" xlink:to="rvt_NestleSAADRMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_NestleSAADRMember_lbl" xml:lang="en-US">Nestle S A A D R [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_SAPSEADRMember" xlink:label="rvt_SAPSEADRMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_SAPSEADRMember" xlink:to="rvt_SAPSEADRMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_SAPSEADRMember_lbl" xml:lang="en-US">S A P S E A D R [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ShellplcADRMember" xlink:label="rvt_ShellplcADRMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ShellplcADRMember" xlink:to="rvt_ShellplcADRMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ShellplcADRMember_lbl" xml:lang="en-US">Shellplc A D R [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010419Member" xlink:label="rvt_C000010419Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010419Member" xlink:to="rvt_C000010419Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010419Member_lbl" xml:lang="en-US">Japan 2x Strategy Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_Japan2xStrategyFundVariableAnnuityMSCIWorldexUSIndexMember" xlink:label="rvt_Japan2xStrategyFundVariableAnnuityMSCIWorldexUSIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_Japan2xStrategyFundVariableAnnuityMSCIWorldexUSIndexMember" xlink:to="rvt_Japan2xStrategyFundVariableAnnuityMSCIWorldexUSIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_Japan2xStrategyFundVariableAnnuityMSCIWorldexUSIndexMember_lbl" xml:lang="en-US">MSCI World ex US Index, Japan 2x Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_Japan2xStrategyFundVariableAnnuityNikkei225StockAverageIndexMember" xlink:label="rvt_Japan2xStrategyFundVariableAnnuityNikkei225StockAverageIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_Japan2xStrategyFundVariableAnnuityNikkei225StockAverageIndexMember" xlink:to="rvt_Japan2xStrategyFundVariableAnnuityNikkei225StockAverageIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_Japan2xStrategyFundVariableAnnuityNikkei225StockAverageIndexMember_lbl" xml:lang="en-US">Nikkei-225 Stock Average Index, Japan 2x Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_CurrencyFuturesContractsMember" xlink:label="rvt_CurrencyFuturesContractsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_CurrencyFuturesContractsMember" xlink:to="rvt_CurrencyFuturesContractsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_CurrencyFuturesContractsMember_lbl" xml:lang="en-US">Currency Futures Contracts [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_EquityFuturesContractsMember" xlink:label="rvt_EquityFuturesContractsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_EquityFuturesContractsMember" xlink:to="rvt_EquityFuturesContractsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_EquityFuturesContractsMember_lbl" xml:lang="en-US">Equity Futures Contracts [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010402Member" xlink:label="rvt_C000010402Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010402Member" xlink:to="rvt_C000010402Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010402Member_lbl" xml:lang="en-US">Strengthening Dollar 2x Strategy Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_StrengtheningDollar2xStrategyFundVariableAnnuityBloombergUSAggregateBondIndexMember" xlink:label="rvt_StrengtheningDollar2xStrategyFundVariableAnnuityBloombergUSAggregateBondIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_StrengtheningDollar2xStrategyFundVariableAnnuityBloombergUSAggregateBondIndexMember" xlink:to="rvt_StrengtheningDollar2xStrategyFundVariableAnnuityBloombergUSAggregateBondIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_StrengtheningDollar2xStrategyFundVariableAnnuityBloombergUSAggregateBondIndexMember_lbl" xml:lang="en-US">Bloomberg U.S. Aggregate Bond Index, Strengthening Dollar 2x Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_StrengtheningDollar2xStrategyFundVariableAnnuityUSDollarIndexMember" xlink:label="rvt_StrengtheningDollar2xStrategyFundVariableAnnuityUSDollarIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_StrengtheningDollar2xStrategyFundVariableAnnuityUSDollarIndexMember" xlink:to="rvt_StrengtheningDollar2xStrategyFundVariableAnnuityUSDollarIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_StrengtheningDollar2xStrategyFundVariableAnnuityUSDollarIndexMember_lbl" xml:lang="en-US">U.S. Dollar Index, Strengthening Dollar 2x Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_USDollarIndexCurrencyIndexSwapAgreementsMember" xlink:label="rvt_USDollarIndexCurrencyIndexSwapAgreementsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_USDollarIndexCurrencyIndexSwapAgreementsMember" xlink:to="rvt_USDollarIndexCurrencyIndexSwapAgreementsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_USDollarIndexCurrencyIndexSwapAgreementsMember_lbl" xml:lang="en-US">U S Dollar Index Currency Index Swap Agreements [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_USDollarIndexCurrencyFuturesContractsMember" xlink:label="rvt_USDollarIndexCurrencyFuturesContractsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_USDollarIndexCurrencyFuturesContractsMember" xlink:to="rvt_USDollarIndexCurrencyFuturesContractsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_USDollarIndexCurrencyFuturesContractsMember_lbl" xml:lang="en-US">U S Dollar Index Currency Futures Contracts [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010400Member" xlink:label="rvt_C000010400Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010400Member" xlink:to="rvt_C000010400Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010400Member_lbl" xml:lang="en-US">Weakening Dollar 2x Strategy Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_WeakeningDollar2xStrategyFundVariableAnnuityBloombergUSAggregateBondIndexMember" xlink:label="rvt_WeakeningDollar2xStrategyFundVariableAnnuityBloombergUSAggregateBondIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_WeakeningDollar2xStrategyFundVariableAnnuityBloombergUSAggregateBondIndexMember" xlink:to="rvt_WeakeningDollar2xStrategyFundVariableAnnuityBloombergUSAggregateBondIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_WeakeningDollar2xStrategyFundVariableAnnuityBloombergUSAggregateBondIndexMember_lbl" xml:lang="en-US">Bloomberg U.S. Aggregate Bond Index, Weaking Dollar 2x Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_WeakeningDollar2xStrategyFundVariableAnnuityUSDollarIndexMember" xlink:label="rvt_WeakeningDollar2xStrategyFundVariableAnnuityUSDollarIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_WeakeningDollar2xStrategyFundVariableAnnuityUSDollarIndexMember" xlink:to="rvt_WeakeningDollar2xStrategyFundVariableAnnuityUSDollarIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_WeakeningDollar2xStrategyFundVariableAnnuityUSDollarIndexMember_lbl" xml:lang="en-US">U.S. Dollar Index, Weaking Dollar 2x Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_USDollarIndexCurrencySwapAgreementsMember" xlink:label="rvt_USDollarIndexCurrencySwapAgreementsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_USDollarIndexCurrencySwapAgreementsMember" xlink:to="rvt_USDollarIndexCurrencySwapAgreementsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_USDollarIndexCurrencySwapAgreementsMember_lbl" xml:lang="en-US">U S Dollar Index Currency Swap Agreements [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010403Member" xlink:label="rvt_C000010403Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010403Member" xlink:to="rvt_C000010403Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010403Member_lbl" xml:lang="en-US">Commodities Strategy Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_CommoditiesStrategyFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_CommoditiesStrategyFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_CommoditiesStrategyFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_CommoditiesStrategyFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_CommoditiesStrategyFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, Commodities Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_CommoditiesStrategyFundVariableAnnuitySampPGoldmanSachsCommodityIndexMember" xlink:label="rvt_CommoditiesStrategyFundVariableAnnuitySampPGoldmanSachsCommodityIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_CommoditiesStrategyFundVariableAnnuitySampPGoldmanSachsCommodityIndexMember" xlink:to="rvt_CommoditiesStrategyFundVariableAnnuitySampPGoldmanSachsCommodityIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_CommoditiesStrategyFundVariableAnnuitySampPGoldmanSachsCommodityIndexMember_lbl" xml:lang="en-US">S&amp;P Goldman Sachs Commodity Index, Commodities Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_SampPGoldmanSachsCommodityIndexFuturesContractsMember" xlink:label="rvt_SampPGoldmanSachsCommodityIndexFuturesContractsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_SampPGoldmanSachsCommodityIndexFuturesContractsMember" xlink:to="rvt_SampPGoldmanSachsCommodityIndexFuturesContractsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_SampPGoldmanSachsCommodityIndexFuturesContractsMember_lbl" xml:lang="en-US">Samp P Goldman Sachs Commodity Index Futures Contracts [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000069235Member" xlink:label="rvt_C000069235Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000069235Member" xlink:to="rvt_C000069235Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000069235Member_lbl" xml:lang="en-US">Global Managed Futures Strategy Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_GlobalManagedFuturesStrategyFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_GlobalManagedFuturesStrategyFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_GlobalManagedFuturesStrategyFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_GlobalManagedFuturesStrategyFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_GlobalManagedFuturesStrategyFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, Global Managed Futures Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_GlobalManagedFuturesStrategyFundVariableAnnuityICEBofA3MonthUSTreasuryBillIndexMember" xlink:label="rvt_GlobalManagedFuturesStrategyFundVariableAnnuityICEBofA3MonthUSTreasuryBillIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_GlobalManagedFuturesStrategyFundVariableAnnuityICEBofA3MonthUSTreasuryBillIndexMember" xlink:to="rvt_GlobalManagedFuturesStrategyFundVariableAnnuityICEBofA3MonthUSTreasuryBillIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_GlobalManagedFuturesStrategyFundVariableAnnuityICEBofA3MonthUSTreasuryBillIndexMember_lbl" xml:lang="en-US">ICE BofA 3-Month U.S. Treasury Bill Index, Global Managed Futures Strategy Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_CommodityFuturesContractsMember" xlink:label="rvt_CommodityFuturesContractsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_CommodityFuturesContractsMember" xlink:to="rvt_CommodityFuturesContractsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_CommodityFuturesContractsMember_lbl" xml:lang="en-US">Commodity Futures Contracts [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_EquityFuturesContractsShortMember" xlink:label="rvt_EquityFuturesContractsShortMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_EquityFuturesContractsShortMember" xlink:to="rvt_EquityFuturesContractsShortMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_EquityFuturesContractsShortMember_lbl" xml:lang="en-US">Equity Futures Contracts Short [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_CurrencyFuturesContractsShortMember" xlink:label="rvt_CurrencyFuturesContractsShortMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_CurrencyFuturesContractsShortMember" xlink:to="rvt_CurrencyFuturesContractsShortMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_CurrencyFuturesContractsShortMember_lbl" xml:lang="en-US">Currency Futures Contracts Short [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_CommodityFuturesContractsShortMember" xlink:label="rvt_CommodityFuturesContractsShortMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_CommodityFuturesContractsShortMember" xlink:to="rvt_CommodityFuturesContractsShortMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_CommodityFuturesContractsShortMember_lbl" xml:lang="en-US">Commodity Futures Contracts Short [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_InterestRateFuturesContractsShortMember" xlink:label="rvt_InterestRateFuturesContractsShortMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_InterestRateFuturesContractsShortMember" xlink:to="rvt_InterestRateFuturesContractsShortMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_InterestRateFuturesContractsShortMember_lbl" xml:lang="en-US">Interest Rate Futures Contracts Short [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_GuggenheimVariableInsuranceStrategyFundIIIMember" xlink:label="rvt_GuggenheimVariableInsuranceStrategyFundIIIMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_GuggenheimVariableInsuranceStrategyFundIIIMember" xlink:to="rvt_GuggenheimVariableInsuranceStrategyFundIIIMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_GuggenheimVariableInsuranceStrategyFundIIIMember_lbl" xml:lang="en-US">Guggenheim Variable Insurance Strategy Fund I I I [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_GuggenheimStrategyFundIIIMember" xlink:label="rvt_GuggenheimStrategyFundIIIMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_GuggenheimStrategyFundIIIMember" xlink:to="rvt_GuggenheimStrategyFundIIIMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_GuggenheimStrategyFundIIIMember_lbl" xml:lang="en-US">Guggenheim Strategy Fund I I I [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010416Member" xlink:label="rvt_C000010416Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010416Member" xlink:to="rvt_C000010416Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010416Member_lbl" xml:lang="en-US">Multi-Hedge Strategies Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_MultiHedgeStrategiesFundVariableAnnuitySampP500IndexMember" xlink:label="rvt_MultiHedgeStrategiesFundVariableAnnuitySampP500IndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_MultiHedgeStrategiesFundVariableAnnuitySampP500IndexMember" xlink:to="rvt_MultiHedgeStrategiesFundVariableAnnuitySampP500IndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_MultiHedgeStrategiesFundVariableAnnuitySampP500IndexMember_lbl" xml:lang="en-US">S&amp;P 500 Index, Multi Hedge Strategies Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_MultiHedgeStrategiesFundVariableAnnuityHFRXGlobalHedgeFundIndexMember" xlink:label="rvt_MultiHedgeStrategiesFundVariableAnnuityHFRXGlobalHedgeFundIndexMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_MultiHedgeStrategiesFundVariableAnnuityHFRXGlobalHedgeFundIndexMember" xlink:to="rvt_MultiHedgeStrategiesFundVariableAnnuityHFRXGlobalHedgeFundIndexMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_MultiHedgeStrategiesFundVariableAnnuityHFRXGlobalHedgeFundIndexMember_lbl" xml:lang="en-US">HFRX Global Hedge Fund Index, Multi Hedge Strategies Fund</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_CustomBasketSwapAgreementsMember" xlink:label="rvt_CustomBasketSwapAgreementsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_CustomBasketSwapAgreementsMember" xlink:to="rvt_CustomBasketSwapAgreementsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_CustomBasketSwapAgreementsMember_lbl" xml:lang="en-US">Custom Basket Swap Agreements [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ClosedEndMutualFundsMember" xlink:label="rvt_ClosedEndMutualFundsMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ClosedEndMutualFundsMember" xlink:to="rvt_ClosedEndMutualFundsMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ClosedEndMutualFundsMember_lbl" xml:lang="en-US">Closed End Mutual Funds [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_UtilitiesMember" xlink:label="rvt_UtilitiesMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_UtilitiesMember" xlink:to="rvt_UtilitiesMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_UtilitiesMember_lbl" xml:lang="en-US">Utilities [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_EnergysupsupMember" xlink:label="rvt_EnergysupsupMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_EnergysupsupMember" xlink:to="rvt_EnergysupsupMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_EnergysupsupMember_lbl" xml:lang="en-US">Energysupsup [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_EnergyShortSalessupsupMember" xlink:label="rvt_EnergyShortSalessupsupMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_EnergyShortSalessupsupMember" xlink:to="rvt_EnergyShortSalessupsupMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_EnergyShortSalessupsupMember_lbl" xml:lang="en-US">Energy Short Salessupsup [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_CommunicationsShortSalessupsupMember" xlink:label="rvt_CommunicationsShortSalessupsupMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_CommunicationsShortSalessupsupMember" xlink:to="rvt_CommunicationsShortSalessupsupMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_CommunicationsShortSalessupsupMember_lbl" xml:lang="en-US">Communications Short Salessupsup [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ConsumerCyclicalShortSalesMember" xlink:label="rvt_ConsumerCyclicalShortSalesMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ConsumerCyclicalShortSalesMember" xlink:to="rvt_ConsumerCyclicalShortSalesMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ConsumerCyclicalShortSalesMember_lbl" xml:lang="en-US">Consumer Cyclical Short Sales [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_TechnologyShortSalesMember" xlink:label="rvt_TechnologyShortSalesMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_TechnologyShortSalesMember" xlink:to="rvt_TechnologyShortSalesMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_TechnologyShortSalesMember_lbl" xml:lang="en-US">Technology Short Sales [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_UtilitiesShortSalesMember" xlink:label="rvt_UtilitiesShortSalesMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_UtilitiesShortSalesMember" xlink:to="rvt_UtilitiesShortSalesMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_UtilitiesShortSalesMember_lbl" xml:lang="en-US">Utilities Short Sales [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ConsumerNoncyclicalShortSalesMember" xlink:label="rvt_ConsumerNoncyclicalShortSalesMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ConsumerNoncyclicalShortSalesMember" xlink:to="rvt_ConsumerNoncyclicalShortSalesMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ConsumerNoncyclicalShortSalesMember_lbl" xml:lang="en-US">Consumer Noncyclical Short Sales [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_IndustrialShortSalesMember" xlink:label="rvt_IndustrialShortSalesMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_IndustrialShortSalesMember" xlink:to="rvt_IndustrialShortSalesMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_IndustrialShortSalesMember_lbl" xml:lang="en-US">Industrial Short Sales [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_FinancialShortSalesMember" xlink:label="rvt_FinancialShortSalesMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_FinancialShortSalesMember" xlink:to="rvt_FinancialShortSalesMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_FinancialShortSalesMember_lbl" xml:lang="en-US">Financial Short Sales [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ExchangeTradedFundsShortSalesMember" xlink:label="rvt_ExchangeTradedFundsShortSalesMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ExchangeTradedFundsShortSalesMember" xlink:to="rvt_ExchangeTradedFundsShortSalesMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ExchangeTradedFundsShortSalesMember_lbl" xml:lang="en-US">Exchange Traded Funds Short Sales [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_CustomBasketSwapAgreementsShortMember" xlink:label="rvt_CustomBasketSwapAgreementsShortMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_CustomBasketSwapAgreementsShortMember" xlink:to="rvt_CustomBasketSwapAgreementsShortMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_CustomBasketSwapAgreementsShortMember_lbl" xml:lang="en-US">Custom Basket Swap Agreements Short [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ChartIndustriesIncMember" xlink:label="rvt_ChartIndustriesIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ChartIndustriesIncMember" xlink:to="rvt_ChartIndustriesIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ChartIndustriesIncMember_lbl" xml:lang="en-US">Chart Industries Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_FrontierCommunicationsParentIncMember" xlink:label="rvt_FrontierCommunicationsParentIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_FrontierCommunicationsParentIncMember" xlink:to="rvt_FrontierCommunicationsParentIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_FrontierCommunicationsParentIncMember_lbl" xml:lang="en-US">Frontier Communications Parent Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_ProAssuranceCorpMember" xlink:label="rvt_ProAssuranceCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_ProAssuranceCorpMember" xlink:to="rvt_ProAssuranceCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_ProAssuranceCorpMember_lbl" xml:lang="en-US">Pro Assurance Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_InternationalMoneyExpressIncMember" xlink:label="rvt_InternationalMoneyExpressIncMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_InternationalMoneyExpressIncMember" xlink:to="rvt_InternationalMoneyExpressIncMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_InternationalMoneyExpressIncMember_lbl" xml:lang="en-US">International Money Express Inc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_JanusHendersonGroupplcMember" xlink:label="rvt_JanusHendersonGroupplcMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_JanusHendersonGroupplcMember" xlink:to="rvt_JanusHendersonGroupplcMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_JanusHendersonGroupplcMember_lbl" xml:lang="en-US">Janus Henderson Groupplc [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_DynavaxTechnologiesCorpMember" xlink:label="rvt_DynavaxTechnologiesCorpMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_DynavaxTechnologiesCorpMember" xlink:to="rvt_DynavaxTechnologiesCorpMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_DynavaxTechnologiesCorpMember_lbl" xml:lang="en-US">Dynavax Technologies Corp [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_C000010379Member" xlink:label="rvt_C000010379Member" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_C000010379Member" xlink:to="rvt_C000010379Member_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_C000010379Member_lbl" xml:lang="en-US">U.S. Government Money Market Fund | Variable Annuity</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_FederalHomeLoanBankFADNMember" xlink:label="rvt_FederalHomeLoanBankFADNMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_FederalHomeLoanBankFADNMember" xlink:to="rvt_FederalHomeLoanBankFADNMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_FederalHomeLoanBankFADNMember_lbl" xml:lang="en-US">Federal Home Loan Bank F A D N [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_FannieMaeFADNMember" xlink:label="rvt_FannieMaeFADNMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_FannieMaeFADNMember" xlink:to="rvt_FannieMaeFADNMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_FannieMaeFADNMember_lbl" xml:lang="en-US">Fannie Mae F A D N [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_FederalFarmCreditBankFADNMember" xlink:label="rvt_FederalFarmCreditBankFADNMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_FederalFarmCreditBankFADNMember" xlink:to="rvt_FederalFarmCreditBankFADNMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_FederalFarmCreditBankFADNMember_lbl" xml:lang="en-US">Federal Farm Credit Bank F A D N [Member]</link:label>
      <link:loc xlink:type="locator" xlink:href="rvt-20251231.xsd#rvt_FreddieMacFADNMember" xlink:label="rvt_FreddieMacFADNMember" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="rvt_FreddieMacFADNMember" xlink:to="rvt_FreddieMacFADNMember_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_FreddieMacFADNMember_lbl" xml:lang="en-US">Freddie Mac F A D N [Member]</link:label>
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="rvt_FederalHomeLoanBankFANMember_lbl" xml:lang="en-US">Federal Home Loan Bank F A N [Member]</link:label>
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AssetsNet_lbl" xml:lang="en-US">Net Assets</link:label>
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      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestmentCompanyPortfolioTurnover" xlink:to="us-gaap_InvestmentCompanyPortfolioTurnover_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InvestmentCompanyPortfolioTurnover_lbl" xml:lang="en-US">Investment Company, Portfolio Turnover</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_NoTradingSymbolFlag" xlink:label="dei_NoTradingSymbolFlag" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_NoTradingSymbolFlag" xlink:to="dei_NoTradingSymbolFlag_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_NoTradingSymbolFlag_lbl" xml:lang="en-US">No Trading Symbol Flag</link:label>
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