/export/starexec/sandbox/solver/bin/starexec_run_tct_rci_cert /export/starexec/sandbox/benchmark/theBenchmark.xml /export/starexec/sandbox/output/output_files


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WORST_CASE(?,O(n^1))
<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="cpfHTML.xsl"?>
<certificationProblem xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 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ame><arity>0</arity><polynomial><sum><polynomial><coefficient><vector><coefficient><integer>0</integer></coefficient></vector></coefficient></polynomial></sum></polynomial></interpret><interpret><name>and</name><arity>2</arity><polynomial><sum><polynomial><coefficient><vector><coefficient><integer>0</integer></coefficient></vector></coefficient></polynomial><polynomial><product><polynomial><coefficient><matrix><vector><coefficient><integer>4</integer></coefficient></vector></matrix></coefficient></polynomial><polynomial><variable>1</variable></polynomial></product></polynomial><polynomial><product><polynomial><coefficient><matrix><vector><coefficient><integer>2</integer></coefficient></vector></matrix></coefficient></polynomial><polynomial><variable>2</variable></polynomial></product></polynomial></sum></polynomial></interpret><interpret><name>eqZList</name><arity>2</arity><polynomial><sum><polynomial><coefficient><vector><coefficient><integer>0</integer></coefficient></vector></coefficient></polynomial><polynomial><product><polynomial><coefficient><matrix><vector><coefficient><integer>0</integer></coefficient></vector></matrix></coefficient></polynomial><polynomial><variable>1</variable></polynomial></product></polynomial><polynomial><product><polynomial><coefficient><matrix><vector><coefficient><integer>0</integer></coefficient></vector></matrix></coefficient></polynomial><polynomial><variable>2</variable></polynomial></product></polynomial></sum></polynomial></interpret><interpret><name>f</name><arity>1</arity><polynomial><sum><polynomial><coefficient><vector><coefficient><integer>0</integer></coefficient></vector></coefficient></polynomial><polynomial><product><polynomial><coefficient><matrix><vector><coefficient><integer>2</integer></coefficient></vector></matrix></coefficient></polynomial><polynomial><variable>1</variable></polynomial></product></polynomial></sum></polynomial></interpret><interpret><name>first</name><arity>1</arity><polynomial><sum><polynomial><coefficient><vector><coefficient><integer>2</integer></coefficient></vector></coefficient></polynomial><polynomial><product><polynomial><coefficient><matrix><vector><coefficient><integer>10</integer></coefficient></vector></matrix></coefficient></polynomial><polynomial><variable>1</variable></polynomial></product></polynomial></sum></polynomial></interpret><interpret><name>g</name><arity>1</arity><polynomial><sum><polynomial><coefficient><vector><coefficient><integer>10</integer></coefficient></vector></coefficient></polynomial><polynomial><product><polynomial><coefficient><matrix><vector><coefficient><integer>2</integer></coefficient></vector></matrix></coefficient></polynomial><polynomial><variable>1</variable></polynomial></product></polynomial></sum></polynomial></interpret><interpret><name>second</name><arity>1</arity><polynomial><sum><polynomial><coefficient><vector><coefficient><integer>5</integer></coefficient></vector></coefficient></polynomial><polynomial><product><polynomial><coefficient><matrix><vector><coefficient><integer>4</integer></coefficient></vector></matrix></coefficient></polynomial><polynomial><variable>1</variable></polynomial></product></polynomial></sum></polynomial></interpret></interpretation></redPair></orderingConstraintProof><trs><rules><rule><lhs><funapp><name>first</name><arg><funapp><name>C</name><arg><var>x1</var></arg><arg><var>x2</var></arg></funapp></arg></funapp></lhs><rhs><var>x1</var></rhs></rule><rule><lhs><funapp><name>g</name><arg><var>x</var></arg></funapp></lhs><rhs><var>x</var></rhs></rule><rule><lhs><funapp><name>second</name><arg><funapp><name>C</name><arg><var>x1</var></arg><arg><var>x2</var></arg></funapp></arg></funapp></lhs><rhs><var>x2</var></rhs></rule></rules></trs><usableRules><rules><rule><lhs><funapp><name>and</name><arg><funapp><name>False</name></funapp></arg><arg><funapp><name>False</name></funapp></arg></funapp></lhs><rhs><funapp><name>False</name></funapp></rhs></rule><rule><lhs><funapp><name>and</name><arg><funapp><name>False</name></funapp></arg><arg><funapp><name>True</name></funapp></arg></funapp></lhs><rhs><funapp><name>False</name></funapp></rhs></rule><rule><lhs><funapp><name>and</name><arg><funapp><name>True</name></funapp></arg><arg><funapp><name>False</name></funapp></arg></funapp></lhs><rhs><funapp><name>False</name></funapp></rhs></rule><rule><lhs><funapp><name>and</name><arg><funapp><name>True</name></funapp></arg><arg><funapp><name>True</name></funapp></arg></funapp></lhs><rhs><funapp><name>True</name></funapp></rhs></rule><rule><lhs><funapp><name>eqZList</name><arg><funapp><name>C</name><arg><var>x1</var></arg><arg><var>x2</var></arg></funapp></arg><arg><funapp><name>C</name><arg><var>y1</var></arg><arg><var>y2</var></arg></funapp></arg></funapp></lhs><rhs><funapp><name>and</name><arg><funapp><name>eqZList</name><arg><var>x1</var></arg><arg><var>y1</var></arg></funapp></arg><arg><funapp><name>eqZList</name><arg><var>x2</var></arg><arg><var>y2</var></arg></funapp></arg></funapp></rhs></rule><rule><lhs><funapp><name>eqZList</name><arg><funapp><name>C</name><arg><var>x1</var></arg><arg><var>x2</var></arg></funapp></arg><arg><funapp><name>Z</name></funapp></arg></funapp></lhs><rhs><funapp><name>False</name></funapp></rhs></rule><rule><lhs><funapp><name>eqZList</name><arg><funapp><name>Z</name></funapp></arg><arg><funapp><name>C</name><arg><var>y1</var></arg><arg><var>y2</var></arg></funapp></arg></funapp></lhs><rhs><funapp><name>False</name></funapp></rhs></rule><rule><lhs><funapp><name>eqZList</name><arg><funapp><name>Z</name></funapp></arg><arg><funapp><name>Z</name></funapp></arg></funapp></lhs><rhs><funapp><name>True</name></funapp></rhs></rule><rule><lhs><funapp><name>f</name><arg><funapp><name>C</name><arg><var>x1</var></arg><arg><var>x2</var></arg></funapp></arg></funapp></lhs><rhs><funapp><name>C</name><arg><funapp><name>f</name><arg><var>x1</var></arg></funapp></arg><arg><funapp><name>f</name><arg><var>x2</var></arg></funapp></arg></funapp></rhs></rule><rule><lhs><funapp><name>f</name><arg><funapp><name>Z</name></funapp></arg></funapp></lhs><rhs><funapp><name>Z</name></funapp></rhs></rule><rule><lhs><funapp><name>first</name><arg><funapp><name>C</name><arg><var>x1</var></arg><arg><var>x2</var></arg></funapp></arg></funapp></lhs><rhs><var>x1</var></rhs></rule><rule><lhs><funapp><name>g</name><arg><var>x</var></arg></funapp></lhs><rhs><var>x</var></rhs></rule><rule><lhs><funapp><name>second</name><arg><funapp><name>C</name><arg><var>x1</var></arg><arg><var>x2</var></arg></funapp></arg></funapp></lhs><rhs><var>x2</var></rhs></rule></rules></usableRules><complexityProof><ruleShifting><orderingConstraintProof><redPair><interpretation><type><matrixInterpretation><domain><naturals/></domain><dimension>1</dimension><strictDimension>1</strictDimension></matrixInterpretation></type><interpret><name>C</name><arity>2</arity><polynomial><sum><polynomial><coefficient><vector><coefficient><integer>2</integer></coefficient></vector></coefficient></polynomial><polynomial><product><polynomial><coefficient><matrix><vector><coefficient><integer>1</integer></coefficient></vector></matrix></coefficient></polynomial><polynomial><variable>1</variable></polynomial></product></polynomial><polynomial><product><polynomial><coefficient><matrix><vector><coefficient><integer>1</integer></coefficient></vector></matrix></coefficient></polynomial><polynomial><variable>2</variable></polynomial></product></polynomial></sum></polynomial></interpret><interpret><name>False</name><arity>0</arity><polynomial><sum><polynomial><coefficient><vector><coefficient><integer>11</integer></coefficient></vector></coefficient></polynomial></sum></polynomial></interpret><interpret><name>True</name><arity>0</arity><polynomial><sum><polynomial><coefficient><vector><coefficient><integer>0</integer></coefficient></vector></coefficient></polynomial></sum></polynomial></interpret><interpret><name>Z</name><arity>0</arity><polynomial><sum><polynomial><coefficient><vector><coefficient><integer>4</integer></coefficient></vector></coefficient></polynomial></sum></polynomial></interpret><interpret><name>and</name><arity>2</arity><polynomial><sum><polynomial><coefficient><vector><coefficient><integer>1</integer></coefficient></vector></coefficient></polynomial><polynomial><product><polynomial><coefficient><matrix><vector><coefficient><integer>1</integer></coefficient></vector></matrix></coefficient></polynomial><polynomial><variable>1</variable></polynomial></product></polynomial><polynomial><product><polynomial><coefficient><matrix><vector><coefficient><integer>1</integer></coefficient></vector></matrix></coefficient></polynomial><polynomial><variable>2</variable></polynomial></product></polynomial></sum></polynomial></interpret><interpret><name>eqZList</name><arity>2</arity><polynomial><sum><polynomial><coefficient><vector><coefficient><integer>1</integer></coefficient></vector></coefficient></polynomial><polynomial><product><polynomial><coefficient><matrix><vector><coefficient><integer>0</integer></coefficient></vector></matrix></coefficient></polynomial><polynomial><variable>1</variable></polynomial></product></polynomial><polynomial><product><polynomial><coefficient><matrix><vector><coefficient><integer>5</integer></coefficient></vector></matrix></coefficient></polynomial><polynomial><variable>2</variable></polynomial></product></polynomial></sum></polynomial></interpret><interpret><name>f</name><arity>1</arity><polynomial><sum><polynomial><coefficient><vector><coefficient><integer>1</integer></coefficient></vector></coefficient></polynomial><polynomial><product><polynomial><coefficient><matrix><vector><coefficient><integer>3</integer></coefficient></vector></matrix></coefficient></polynomial><polynomial><variable>1</variable></polynomial></product></polynomial></sum></polynomial></interpret><interpret><name>first</name><arity>1</arity><polynomial><sum><polynomial><coefficient><vector><coefficient><integer>7</integer></coefficient></vector></coefficient></polynomial><polynomial><product><polynomial><coefficient><matrix><vector><coefficient><integer>1</integer></coefficient></vector></matrix></coefficient></polynomial><polynomial><variable>1</variable></polynomial></product></polynomial></sum></polynomial></interpret><interpret><name>g</name><arity>1</arity><polynomial><sum><polynomial><coefficient><vector><coefficient><integer>2</integer></coefficient></vector></coefficient></polynomial><polynomial><product><polynomial><coefficient><matrix><vector><coefficient><integer>4</integer></coefficient></vector></matrix></coefficient></polynomial><polynomial><variable>1</variable></polynomial></product></polynomial></sum></polynomial></interpret><interpret><name>second</name><arity>1</arity><polynomial><sum><polynomial><coefficient><vector><coefficient><integer>9</integer></coefficient></vector></coefficient></polynomial><polynomial><product><polynomial><coefficient><matrix><vector><coefficient><integer>9</integer></coefficient></vector></matrix></coefficient></polynomial><polynomial><variable>1</variable></polynomial></product></polynomial></sum></polynomial></interpret></interpretation></redPair></orderingConstraintProof><trs><rules><rule><lhs><funapp><name>eqZList</name><arg><funapp><name>C</name><arg><var>x1</var></arg><arg><var>x2</var></arg></funapp></arg><arg><funapp><name>C</name><arg><var>y1</var></arg><arg><var>y2</var></arg></funapp></arg></funapp></lhs><rhs><funapp><name>and</name><arg><funapp><name>eqZList</name><arg><var>x1</var></arg><arg><var>y1</var></arg></funapp></arg><arg><funapp><name>eqZList</name><arg><var>x2</var></arg><arg><var>y2</var></arg></funapp></arg></funapp></rhs></rule><rule><lhs><funapp><name>eqZList</name><arg><funapp><name>C</name><arg><var>x1</var></arg><arg><var>x2</var></arg></funapp></arg><arg><funapp><name>Z</name></funapp></arg></funapp></lhs><rhs><funapp><name>False</name></funapp></rhs></rule><rule><lhs><funapp><name>eqZList</name><arg><funapp><name>Z</name></funapp></arg><arg><funapp><name>Z</name></funapp></arg></funapp></lhs><rhs><funapp><name>True</name></funapp></rhs></rule><rule><lhs><funapp><name>f</name><arg><funapp><name>C</name><arg><var>x1</var></arg><arg><var>x2</var></arg></funapp></arg></funapp></lhs><rhs><funapp><name>C</name><arg><funapp><name>f</name><arg><var>x1</var></arg></funapp></arg><arg><funapp><name>f</name><arg><var>x2</var></arg></funapp></arg></funapp></rhs></rule><rule><lhs><funapp><name>f</name><arg><funapp><name>Z</name></funapp></arg></funapp></lhs><rhs><funapp><name>Z</name></funapp></rhs></rule></rules></trs><usableRules><rules><rule><lhs><funapp><name>and</name><arg><funapp><name>False</name></funapp></arg><arg><funapp><name>False</name></funapp></arg></funapp></lhs><rhs><funapp><name>False</name></funapp></rhs></rule><rule><lhs><funapp><name>and</name><arg><funapp><name>False</name></funapp></arg><arg><funapp><name>True</name></funapp></arg></funapp></lhs><rhs><funapp><name>False</name></funapp></rhs></rule><rule><lhs><funapp><name>and</name><arg><funapp><name>True</name></funapp></arg><arg><funapp><name>False</name></funapp></arg></funapp></lhs><rhs><funapp><name>False</name></funapp></rhs></rule><rule><lhs><funapp><name>and</name><arg><funapp><name>True</name></funapp></arg><arg><funapp><name>True</name></funapp></arg></funapp></lhs><rhs><funapp><name>True</name></funapp></rhs></rule><rule><lhs><funapp><name>eqZList</name><arg><funapp><name>C</name><arg><var>x1</var></arg><arg><var>x2</var></arg></funapp></arg><arg><funapp><name>C</name><arg><var>y1</var></arg><arg><var>y2</var></arg></funapp></arg></funapp></lhs><rhs><funapp><name>and</name><arg><funapp><name>eqZList</name><arg><var>x1</var></arg><arg><var>y1</var></arg></funapp></arg><arg><funapp><name>eqZList</name><arg><var>x2</var></arg><arg><var>y2</var></arg></funapp></arg></funapp></rhs></rule><rule><lhs><funapp><name>eqZList</name><arg><funapp><name>C</name><arg><var>x1</var></arg><arg><var>x2</var></arg></funapp></arg><arg><funapp><name>Z</name></funapp></arg></funapp></lhs><rhs><funapp><name>False</name></funapp></rhs></rule><rule><lhs><funapp><name>eqZList</name><arg><funapp><name>Z</name></funapp></arg><arg><funapp><name>C</name><arg><var>y1</var></arg><arg><var>y2</var></arg></funapp></arg></funapp></lhs><rhs><funapp><name>False</name></funapp></rhs></rule><rule><lhs><funapp><name>eqZList</name><arg><funapp><name>Z</name></funapp></arg><arg><funapp><name>Z</name></funapp></arg></funapp></lhs><rhs><funapp><name>True</name></funapp></rhs></rule><rule><lhs><funapp><name>f</name><arg><funapp><name>C</name><arg><var>x1</var></arg><arg><var>x2</var></arg></funapp></arg></funapp></lhs><rhs><funapp><name>C</name><arg><funapp><name>f</name><arg><var>x1</var></arg></funapp></arg><arg><funapp><name>f</name><arg><var>x2</var></arg></funapp></arg></funapp></rhs></rule><rule><lhs><funapp><name>f</name><arg><funapp><name>Z</name></funapp></arg></funapp></lhs><rhs><funapp><name>Z</name></funapp></rhs></rule><rule><lhs><funapp><name>first</name><arg><funapp><name>C</name><arg><var>x1</var></arg><arg><var>x2</var></arg></funapp></arg></funapp></lhs><rhs><var>x1</var></rhs></rule><rule><lhs><funapp><name>g</name><arg><var>x</var></arg></funapp></lhs><rhs><var>x</var></rhs></rule><rule><lhs><funapp><name>second</name><arg><funapp><name>C</name><arg><var>x1</var></arg><arg><var>x2</var></arg></funapp></arg></funapp></lhs><rhs><var>x2</var></rhs></rule></rules></usableRules><complexityProof><ruleShifting><orderingConstraintProof><redPair><interpretation><type><matrixInterpretation><domain><naturals/></domain><dimension>1</dimension><strictDimension>1</strictDimension></matrixInterpretation></type><interpret><name>C</name><arity>2</arity><polynomial><sum><polynomial><coefficient><vector><coefficient><integer>0</integer></coefficient></vector></coefficient></polynomial><polynomial><product><polynomial><coefficient><matrix><vector><coefficient><integer>1</integer></coefficient></vector></matrix></coefficient></polynomial><polynomial><variable>1</variable></polynomial></product></polynomial><polynomial><product><polynomial><coefficient><matrix><vector><coefficient><integer>1</integer></coefficient></vector></matrix></coefficient></polynomial><polynomial><variable>2</variable></polynomial></product></polynomial></sum></polynomial></interpret><interpret><name>False</name><arity>0</arity><polynomial><sum><polynomial><coefficient><vector><coefficient><integer>0</integer></coefficient></vector></coefficient></polynomial></sum></polynomial></interpret><interpret><name>True</name><arity>0</arity><polynomial><sum><polynomial><coefficient><vector><coefficient><integer>4</integer></coefficient></vector></coefficient></polynomial></sum></polynomial></interpret><interpret><name>Z</name><arity>0</arity><polynomial><sum><polynomial><coefficient><vector><coefficient><integer>4</integer></coefficient></vector></coefficient></polynomial></sum></polynomial></interpret><interpret><name>and</name><arity>2</arity><polynomial><sum><polynomial><coefficient><vector><coefficient><integer>0</integer></coefficient></vector></coefficient></polynomial><polynomial><product><polynomial><coefficient><matrix><vector><coefficient><integer>1</integer></coefficient></vector></matrix></coefficient></polynomial><polynomial><variable>1</variable></polynomial></product></polynomial><polynomial><product><polynomial><coefficient><matrix><vector><coefficient><integer>1</integer></coefficient></vector></matrix></coefficient></polynomial><polynomial><variable>2</variable></polynomial></product></polynomial></sum></polynomial></interpret><interpret><name>eqZList</name><arity>2</arity><polynomial><sum><polynomial><coefficient><vector><coefficient><integer>0</integer></coefficient></vector></coefficient></polynomial><polynomial><product><polynomial><coefficient><matrix><vector><coefficient><integer>2</integer></coefficient></vector></matrix></coefficient></polynomial><polynomial><variable>1</variable></polynomial></product></polynomial><polynomial><product><polynomial><coefficient><matrix><vector><coefficient><integer>0</integer></coefficient></vector></matrix></coefficient></polynomial><polynomial><variable>2</variable></polynomial></product></polynomial></sum></polynomial></interpret><interpret><name>f</name><arity>1</arity><polynomial><sum><polynomial><coefficient><vector><coefficient><integer>0</integer></coefficient></vector></coefficient></polynomial><polynomial><product><polynomial><coefficient><matrix><vector><coefficient><integer>5</integer></coefficient></vector></matrix></coefficient></polynomial><polynomial><variable>1</variable></polynomial></product></polynomial></sum></polynomial></interpret><interpret><name>first</name><arity>1</arity><polynomial><sum><polynomial><coefficient><vector><coefficient><integer>1</integer></coefficient></vector></coefficient></polynomial><polynomial><product><polynomial><coefficient><matrix><vector><coefficient><integer>1</integer></coefficient></vector></matrix></coefficient></polynomial><polynomial><variable>1</variable></polynomial></product></polynomial></sum></polynomial></interpret><interpret><name>g</name><arity>1</arity><polynomial><sum><polynomial><coefficient><vector><coefficient><integer>0</integer></coefficient></vector></coefficient></polynomial><polynomial><product><polynomial><coefficient><matrix><vector><coefficient><integer>2</integer></coefficient></vector></matrix></coefficient></polynomial><polynomial><variable>1</variable></polynomial></product></polynomial></sum></polynomial></interpret><interpret><name>second</name><arity>1</arity><polynomial><sum><polynomial><coefficient><vector><coefficient><integer>5</integer></coefficient></vector></coefficient></polynomial><polynomial><product><polynomial><coefficient><matrix><vector><coefficient><integer>2</integer></coefficient></vector></matrix></coefficient></polynomial><polynomial><variable>1</variable></polynomial></product></polynomial></sum></polynomial></interpret></interpretation></redPair></orderingConstraintProof><trs><rules><rule><lhs><funapp><name>eqZList</name><arg><funapp><name>Z</name></funapp></arg><arg><funapp><name>C</name><arg><var>y1</var></arg><arg><var>y2</var></arg></funapp></arg></funapp></lhs><rhs><funapp><name>False</name></funapp></rhs></rule></rules></trs><usableRules><rules><rule><lhs><funapp><name>and</name><arg><funapp><name>False</name></funapp></arg><arg><funapp><name>False</name></funapp></arg></funapp></lhs><rhs><funapp><name>False</name></funapp></rhs></rule><rule><lhs><funapp><name>and</name><arg><funapp><name>False</name></funapp></arg><arg><funapp><name>True</name></funapp></arg></funapp></lhs><rhs><funapp><name>False</name></funapp></rhs></rule><rule><lhs><funapp><name>and</name><arg><funapp><name>True</name></funapp></arg><arg><funapp><name>False</name></funapp></arg></funapp></lhs><rhs><funapp><name>False</name></funapp></rhs></rule><rule><lhs><funapp><name>and</name><arg><funapp><name>True</name></funapp></arg><arg><funapp><name>True</name></funapp></arg></funapp></lhs><rhs><funapp><name>True</name></funapp></rhs></rule><rule><lhs><funapp><name>eqZList</name><arg><funapp><name>C</name><arg><var>x1</var></arg><arg><var>x2</var></arg></funapp></arg><arg><funapp><name>C</name><arg><var>y1</var></arg><arg><var>y2</var></arg></funapp></arg></funapp></lhs><rhs><funapp><name>and</name><arg><funapp><name>eqZList</name><arg><var>x1</var></arg><arg><var>y1</var></arg></funapp></arg><arg><funapp><name>eqZList</name><arg><var>x2</var></arg><arg><var>y2</var></arg></funapp></arg></funapp></rhs></rule><rule><lhs><funapp><name>eqZList</name><arg><funapp><name>C</name><arg><var>x1</var></arg><arg><var>x2</var></arg></funapp></arg><arg><funapp><name>Z</name></funapp></arg></funapp></lhs><rhs><funapp><name>False</name></funapp></rhs></rule><rule><lhs><funapp><name>eqZList</name><arg><funapp><name>Z</name></funapp></arg><arg><funapp><name>C</name><arg><var>y1</var></arg><arg><var>y2</var></arg></funapp></arg></funapp></lhs><rhs><funapp><name>False</name></funapp></rhs></rule><rule><lhs><funapp><name>eqZList</name><arg><funapp><name>Z</name></funapp></arg><arg><funapp><name>Z</name></funapp></arg></funapp></lhs><rhs><funapp><name>True</name></funapp></rhs></rule><rule><lhs><funapp><name>f</name><arg><funapp><name>C</name><arg><var>x1</var></arg><arg><var>x2</var></arg></funapp></arg></funapp></lhs><rhs><funapp><name>C</name><arg><funapp><name>f</name><arg><var>x1</var></arg></funapp></arg><arg><funapp><name>f</name><arg><var>x2</var></arg></funapp></arg></funapp></rhs></rule><rule><lhs><funapp><name>f</name><arg><funapp><name>Z</name></funapp></arg></funapp></lhs><rhs><funapp><name>Z</name></funapp></rhs></rule><rule><lhs><funapp><name>first</name><arg><funapp><name>C</name><arg><var>x1</var></arg><arg><var>x2</var></arg></funapp></arg></funapp></lhs><rhs><var>x1</var></rhs></rule><rule><lhs><funapp><name>g</name><arg><var>x</var></arg></funapp></lhs><rhs><var>x</var></rhs></rule><rule><lhs><funapp><name>second</name><arg><funapp><name>C</name><arg><var>x1</var></arg><arg><var>x2</var></arg></funapp></arg></funapp></lhs><rhs><var>x2</var></rhs></rule></rules></usableRules><complexityProof><rIsEmpty/></complexityProof></ruleShifting></complexityProof></ruleShifting></complexityProof></ruleShifting></complexityProof></proof><origin><proofOrigin><tool><name>TcT</name><version/></tool></proofOrigin></origin></certificationProblem>