YES

certificate:
<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="cpf3HTML.xsl"?><certificationProblem xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="cpf3.xsd"><cpfVersion>3.0</cpfVersion><lookupTables><ruleTable/></lookupTables><input><infeasibilityInput><ctrs><conditionType><oriented/></conditionType><rules><rule><funapp><name>f</name><var>y</var><funapp><name>a</name></funapp></funapp><funapp><name>g</name><var>x</var><var>x</var></funapp><conditions><condition><funapp><name>h</name><var>z</var></funapp><var>x</var></condition><condition><var>y</var><funapp><name>k</name><var>z</var></funapp></condition><condition><var>x</var><funapp><name>b</name></funapp></condition></conditions></rule><rule><funapp><name>f</name><var>y</var><var>z</var></funapp><funapp><name>k</name><var>x</var></funapp><conditions><condition><var>z</var><funapp><name>h</name><funapp><name>a</name></funapp></funapp></condition><condition><var>y</var><funapp><name>k</name><funapp><name>a</name></funapp></funapp></condition><condition><funapp><name>a</name></funapp><var>x</var></condition></conditions></rule><rule><funapp><name>k</name><var>x</var></funapp><funapp><name>h</name><var>x</var></funapp><conditions/></rule><rule><funapp><name>k</name><var>x</var></funapp><funapp><name>b</name></funapp><conditions/></rule><rule><funapp><name>k</name><var>x</var></funapp><funapp><name>a</name></funapp><conditions/></rule><rule><funapp><name>a</name></funapp><funapp><name>b</name></funapp><conditions/></rule><rule><funapp><name>g</name><var>x</var><var>x</var></funapp><funapp><name>a</name></funapp><conditions/></rule></rules></ctrs><infeasibilityQuery><rule><funapp><name>f</name><var>x</var><var>y</var></funapp><funapp><name>g</name><var>z</var><var>z</var></funapp></rule></infeasibilityQuery></infeasibilityInput></input><property><infeasibility/></property><answer><yes/></answer><proof><infeasibilityProof><rightInlineConditions><rules><rule><funapp><name>f</name><var>y</var><funapp><name>a</name></funapp></funapp><funapp><name>g</name><funapp><name>h</name><var>z</var></funapp><funapp><name>h</name><var>z</var></funapp></funapp><conditions><condition><var>y</var><funapp><name>k</name><var>z</var></funapp></condition><condition><funapp><name>h</name><var>z</var></funapp><funapp><name>b</name></funapp></condition></conditions></rule><rule><funapp><name>f</name><var>y</var><var>z</var></funapp><funapp><name>k</name><funapp><name>a</name></funapp></funapp><conditions><condition><var>z</var><funapp><name>h</name><funapp><name>a</name></funapp></funapp></condition><condition><var>y</var><funapp><name>k</name><funapp><name>a</name></funapp></funapp></condition></conditions></rule><rule><funapp><name>k</name><var>x</var></funapp><funapp><name>h</name><var>x</var></funapp><conditions/></rule><rule><funapp><name>k</name><var>x</var></funapp><funapp><name>b</name></funapp><conditions/></rule><rule><funapp><name>k</name><var>x</var></funapp><funapp><name>a</name></funapp><conditions/></rule><rule><funapp><name>a</name></funapp><funapp><name>b</name></funapp><conditions/></rule><rule><funapp><name>g</name><var>x</var><var>x</var></funapp><funapp><name>a</name></funapp><conditions/></rule></rules><inlinedRules><inlinedRule><rule><funapp><name>f</name><var>y</var><funapp><name>a</name></funapp></funapp><funapp><name>g</name><var>x</var><var>x</var></funapp><conditions><condition><funapp><name>h</name><var>z</var></funapp><var>x</var></condition><condition><var>y</var><funapp><name>k</name><var>z</var></funapp></condition><condition><var>x</var><funapp><name>b</name></funapp></condition></conditions></rule><inlinedConditions><condition><funapp><name>h</name><var>z</var></funapp><var>x</var></condition></inlinedConditions></inlinedRule><inlinedRule><rule><funapp><name>f</name><var>y</var><var>z</var></funapp><funapp><name>k</name><var>x</var></funapp><conditions><condition><var>z</var><funapp><name>h</name><funapp><name>a</name></funapp></funapp></condition><condition><var>y</var><funapp><name>k</name><funapp><name>a</name></funapp></funapp></condition><condition><funapp><name>a</name></funapp><var>x</var></condition></conditions></rule><inlinedConditions><condition><funapp><name>a</name></funapp><var>x</var></condition></inlinedConditions></inlinedRule></inlinedRules><infeasibilityProof><leftInlineConditions><rules><rule><funapp><name>f</name><funapp><name>k</name><var>z</var></funapp><funapp><name>a</name></funapp></funapp><funapp><name>g</name><funapp><name>h</name><var>z</var></funapp><funapp><name>h</name><var>z</var></funapp></funapp><conditions><condition><funapp><name>h</name><var>z</var></funapp><funapp><name>b</name></funapp></condition></conditions></rule><rule><funapp><name>f</name><funapp><name>k</name><funapp><name>a</name></funapp></funapp><funapp><name>h</name><funapp><name>a</name></funapp></funapp></funapp><funapp><name>k</name><funapp><name>a</name></funapp></funapp><conditions/></rule><rule><funapp><name>k</name><var>x</var></funapp><funapp><name>h</name><var>x</var></funapp><conditions/></rule><rule><funapp><name>k</name><var>x</var></funapp><funapp><name>b</name></funapp><conditions/></rule><rule><funapp><name>k</name><var>x</var></funapp><funapp><name>a</name></funapp><conditions/></rule><rule><funapp><name>a</name></funapp><funapp><name>b</name></funapp><conditions/></rule><rule><funapp><name>g</name><var>x</var><var>x</var></funapp><funapp><name>a</name></funapp><conditions/></rule></rules><inlinedRules><inlinedRule><rule><funapp><name>f</name><var>y</var><funapp><name>a</name></funapp></funapp><funapp><name>g</name><funapp><name>h</name><var>z</var></funapp><funapp><name>h</name><var>z</var></funapp></funapp><conditions><condition><var>y</var><funapp><name>k</name><var>z</var></funapp></condition><condition><funapp><name>h</name><var>z</var></funapp><funapp><name>b</name></funapp></condition></conditions></rule><inlinedConditions><condition><var>y</var><funapp><name>k</name><var>z</var></funapp></condition></inlinedConditions></inlinedRule><inlinedRule><rule><funapp><name>f</name><var>y</var><var>z</var></funapp><funapp><name>k</name><funapp><name>a</name></funapp></funapp><conditions><condition><var>z</var><funapp><name>h</name><funapp><name>a</name></funapp></funapp></condition><condition><var>y</var><funapp><name>k</name><funapp><name>a</name></funapp></funapp></condition></conditions></rule><inlinedConditions><condition><var>y</var><funapp><name>k</name><funapp><name>a</name></funapp></funapp></condition><condition><var>z</var><funapp><name>h</name><funapp><name>a</name></funapp></funapp></condition></inlinedConditions></inlinedRule></inlinedRules><infeasibilityProof><ifritRules><rules><rule><funapp><name>f</name><funapp><name>k</name><funapp><name>a</name></funapp></funapp><funapp><name>h</name><funapp><name>a</name></funapp></funapp></funapp><funapp><name>k</name><funapp><name>a</name></funapp></funapp><conditions/></rule><rule><funapp><name>k</name><var>x</var></funapp><funapp><name>h</name><var>x</var></funapp><conditions/></rule><rule><funapp><name>k</name><var>x</var></funapp><funapp><name>b</name></funapp><conditions/></rule><rule><funapp><name>k</name><var>x</var></funapp><funapp><name>a</name></funapp><conditions/></rule><rule><funapp><name>a</name></funapp><funapp><name>b</name></funapp><conditions/></rule><rule><funapp><name>g</name><var>x</var><var>x</var></funapp><funapp><name>a</name></funapp><conditions/></rule></rules><infeasibilityProof><infeasibleCompoundConditions><name>|</name><nonreachabilityProof><nonreachableTcap/></nonreachabilityProof></infeasibleCompoundConditions></infeasibilityProof></ifritRules></infeasibilityProof></leftInlineConditions></infeasibilityProof></rightInlineConditions></infeasibilityProof></proof><metaInformation><toolInfos><toolInfo>nonreach</toolInfo><toolInfo>version: 1.3.0.0</toolInfo></toolInfos></metaInformation></certificationProblem>