/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/min-array-hom.wvr.bpl
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This is Ultimate 0.2.1-a865e3bea3ade1065a4c95009cfa501fe03c5538-a865e3b
[2021-02-19 19:09:28,928 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-02-19 19:09:28,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
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[2021-02-19 19:09:28,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-02-19 19:09:28,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-02-19 19:09:28,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-02-19 19:09:28,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-02-19 19:09:28,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-02-19 19:09:28,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2021-02-19 19:09:28,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-02-19 19:09:28,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
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[2021-02-19 19:09:28,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
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[2021-02-19 19:09:29,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-02-19 19:09:29,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-02-19 19:09:29,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-02-19 19:09:29,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-02-19 19:09:29,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-02-19 19:09:29,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-02-19 19:09:29,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-02-19 19:09:29,010 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-02-19 19:09:29,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-02-19 19:09:29,017 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-02-19 19:09:29,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-02-19 19:09:29,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
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[2021-02-19 19:09:29,023 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
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[2021-02-19 19:09:29,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2021-02-19 19:09:29,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-02-19 19:09:29,026 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf
[2021-02-19 19:09:29,060 INFO L113 SettingsManager]: Loading preferences was successful
[2021-02-19 19:09:29,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-02-19 19:09:29,061 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-02-19 19:09:29,061 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-02-19 19:09:29,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-02-19 19:09:29,064 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-02-19 19:09:29,064 INFO L138 SettingsManager]: * Use SBE=true
[2021-02-19 19:09:29,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-02-19 19:09:29,065 INFO L138 SettingsManager]: * sizeof long=4
[2021-02-19 19:09:29,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-02-19 19:09:29,066 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-02-19 19:09:29,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-02-19 19:09:29,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-02-19 19:09:29,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-02-19 19:09:29,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-02-19 19:09:29,066 INFO L138 SettingsManager]: * sizeof long double=12
[2021-02-19 19:09:29,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-02-19 19:09:29,066 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-02-19 19:09:29,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-02-19 19:09:29,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-02-19 19:09:29,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-02-19 19:09:29,067 INFO L138 SettingsManager]: * To the following directory=./dump/
[2021-02-19 19:09:29,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-02-19 19:09:29,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-02-19 19:09:29,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-02-19 19:09:29,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-02-19 19:09:29,068 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-02-19 19:09:29,068 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-02-19 19:09:29,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-02-19 19:09:29,068 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-02-19 19:09:29,068 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-02-19 19:09:29,068 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-02-19 19:09:29,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-02-19 19:09:29,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-02-19 19:09:29,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-02-19 19:09:29,420 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser...
[2021-02-19 19:09:29,421 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized
[2021-02-19 19:09:29,422 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/min-array-hom.wvr.bpl
[2021-02-19 19:09:29,422 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/min-array-hom.wvr.bpl'
[2021-02-19 19:09:29,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-02-19 19:09:29,459 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2021-02-19 19:09:29,460 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-02-19 19:09:29,460 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-02-19 19:09:29,460 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-02-19 19:09:29,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 07:09:29" (1/1) ...
[2021-02-19 19:09:29,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 07:09:29" (1/1) ...
[2021-02-19 19:09:29,481 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-02-19 19:09:29,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-02-19 19:09:29,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-02-19 19:09:29,483 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-02-19 19:09:29,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 07:09:29" (1/1) ...
[2021-02-19 19:09:29,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 07:09:29" (1/1) ...
[2021-02-19 19:09:29,491 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 07:09:29" (1/1) ...
[2021-02-19 19:09:29,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 07:09:29" (1/1) ...
[2021-02-19 19:09:29,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 07:09:29" (1/1) ...
[2021-02-19 19:09:29,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 07:09:29" (1/1) ...
[2021-02-19 19:09:29,499 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 07:09:29" (1/1) ...
[2021-02-19 19:09:29,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-02-19 19:09:29,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-02-19 19:09:29,504 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-02-19 19:09:29,504 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-02-19 19:09:29,507 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 07:09:29" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-02-19 19:09:29,562 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration
[2021-02-19 19:09:29,562 INFO L130 BoogieDeclarations]: Found specification of procedure thread1
[2021-02-19 19:09:29,562 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1
[2021-02-19 19:09:29,562 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration
[2021-02-19 19:09:29,563 INFO L130 BoogieDeclarations]: Found specification of procedure thread2
[2021-02-19 19:09:29,563 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2
[2021-02-19 19:09:29,563 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration
[2021-02-19 19:09:29,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-02-19 19:09:29,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-02-19 19:09:29,563 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration
[2021-02-19 19:09:29,563 INFO L130 BoogieDeclarations]: Found specification of procedure thread3
[2021-02-19 19:09:29,564 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3
[2021-02-19 19:09:29,565 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement
[2021-02-19 19:09:29,770 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-02-19 19:09:29,771 INFO L299 CfgBuilder]: Removed 0 assume(true) statements.
[2021-02-19 19:09:29,772 INFO L202 PluginConnector]: Adding new model min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 07:09:29 BoogieIcfgContainer
[2021-02-19 19:09:29,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-02-19 19:09:29,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-02-19 19:09:29,782 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-02-19 19:09:29,784 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-02-19 19:09:29,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 07:09:29" (1/2) ...
[2021-02-19 19:09:29,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39d66417 and model type min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 07:09:29, skipping insertion in model container
[2021-02-19 19:09:29,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 07:09:29" (2/2) ...
[2021-02-19 19:09:29,786 INFO L111 eAbstractionObserver]: Analyzing ICFG min-array-hom.wvr.bpl
[2021-02-19 19:09:29,791 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2021-02-19 19:09:29,791 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-02-19 19:09:29,793 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-02-19 19:09:29,794 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2021-02-19 19:09:29,849 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions.
[2021-02-19 19:09:29,863 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations.
[2021-02-19 19:09:29,879 INFO L376 AbstractCegarLoop]: Interprodecural is true
[2021-02-19 19:09:29,880 INFO L377 AbstractCegarLoop]: Hoare is true
[2021-02-19 19:09:29,880 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP
[2021-02-19 19:09:29,880 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-02-19 19:09:29,880 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-02-19 19:09:29,880 INFO L381 AbstractCegarLoop]: Difference is false
[2021-02-19 19:09:29,880 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-02-19 19:09:29,880 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-02-19 19:09:29,887 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 29 transitions, 82 flow
[2021-02-19 19:09:29,903 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 114 states, 112 states have (on average 2.8035714285714284) internal successors, (314), 113 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:29,905 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 112 states have (on average 2.8035714285714284) internal successors, (314), 113 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:29,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2021-02-19 19:09:29,912 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:29,912 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:29,912 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:29,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:29,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1272469491, now seen corresponding path program 1 times
[2021-02-19 19:09:29,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:29,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739213032]
[2021-02-19 19:09:29,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:30,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:30,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739213032]
[2021-02-19 19:09:30,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-19 19:09:30,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-02-19 19:09:30,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849082845]
[2021-02-19 19:09:30,127 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-02-19 19:09:30,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:30,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-02-19 19:09:30,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-02-19 19:09:30,142 INFO L87 Difference]: Start difference. First operand has 114 states, 112 states have (on average 2.8035714285714284) internal successors, (314), 113 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:30,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:30,186 INFO L93 Difference]: Finished difference Result 217 states and 617 transitions.
[2021-02-19 19:09:30,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-02-19 19:09:30,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18
[2021-02-19 19:09:30,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:30,204 INFO L225 Difference]: With dead ends: 217
[2021-02-19 19:09:30,204 INFO L226 Difference]: Without dead ends: 202
[2021-02-19 19:09:30,205 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-02-19 19:09:30,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states.
[2021-02-19 19:09:30,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 149.
[2021-02-19 19:09:30,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 2.831081081081081) internal successors, (419), 148 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:30,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 419 transitions.
[2021-02-19 19:09:30,269 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 419 transitions. Word has length 18
[2021-02-19 19:09:30,270 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:30,270 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 419 transitions.
[2021-02-19 19:09:30,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:30,271 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 419 transitions.
[2021-02-19 19:09:30,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2021-02-19 19:09:30,276 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:30,276 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:30,276 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-02-19 19:09:30,277 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:30,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:30,279 INFO L82 PathProgramCache]: Analyzing trace with hash -411683507, now seen corresponding path program 1 times
[2021-02-19 19:09:30,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:30,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852139592]
[2021-02-19 19:09:30,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:30,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-02-19 19:09:30,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852139592]
[2021-02-19 19:09:30,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-19 19:09:30,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-02-19 19:09:30,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924894369]
[2021-02-19 19:09:30,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states
[2021-02-19 19:09:30,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:30,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-02-19 19:09:30,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-02-19 19:09:30,357 INFO L87 Difference]: Start difference. First operand 149 states and 419 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:30,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:30,405 INFO L93 Difference]: Finished difference Result 158 states and 445 transitions.
[2021-02-19 19:09:30,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-02-19 19:09:30,406 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20
[2021-02-19 19:09:30,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:30,409 INFO L225 Difference]: With dead ends: 158
[2021-02-19 19:09:30,409 INFO L226 Difference]: Without dead ends: 158
[2021-02-19 19:09:30,410 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-02-19 19:09:30,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states.
[2021-02-19 19:09:30,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 133.
[2021-02-19 19:09:30,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 2.8333333333333335) internal successors, (374), 132 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:30,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 374 transitions.
[2021-02-19 19:09:30,427 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 374 transitions. Word has length 20
[2021-02-19 19:09:30,428 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:30,428 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 374 transitions.
[2021-02-19 19:09:30,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:30,428 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 374 transitions.
[2021-02-19 19:09:30,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2021-02-19 19:09:30,429 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:30,429 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:30,429 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-02-19 19:09:30,429 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:30,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:30,430 INFO L82 PathProgramCache]: Analyzing trace with hash 296923691, now seen corresponding path program 1 times
[2021-02-19 19:09:30,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:30,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625191944]
[2021-02-19 19:09:30,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:30,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-02-19 19:09:30,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625191944]
[2021-02-19 19:09:30,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-19 19:09:30,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-02-19 19:09:30,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840881313]
[2021-02-19 19:09:30,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states
[2021-02-19 19:09:30,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:30,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-02-19 19:09:30,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2021-02-19 19:09:30,486 INFO L87 Difference]: Start difference. First operand 133 states and 374 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:30,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:30,544 INFO L93 Difference]: Finished difference Result 183 states and 522 transitions.
[2021-02-19 19:09:30,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-02-19 19:09:30,544 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20
[2021-02-19 19:09:30,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:30,546 INFO L225 Difference]: With dead ends: 183
[2021-02-19 19:09:30,546 INFO L226 Difference]: Without dead ends: 183
[2021-02-19 19:09:30,546 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2021-02-19 19:09:30,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states.
[2021-02-19 19:09:30,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 158.
[2021-02-19 19:09:30,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 2.8535031847133756) internal successors, (448), 157 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:30,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 448 transitions.
[2021-02-19 19:09:30,553 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 448 transitions. Word has length 20
[2021-02-19 19:09:30,553 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:30,554 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 448 transitions.
[2021-02-19 19:09:30,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:30,554 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 448 transitions.
[2021-02-19 19:09:30,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2021-02-19 19:09:30,555 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:30,555 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:30,555 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-02-19 19:09:30,555 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:30,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:30,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1416433813, now seen corresponding path program 1 times
[2021-02-19 19:09:30,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:30,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66007033]
[2021-02-19 19:09:30,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:30,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:30,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66007033]
[2021-02-19 19:09:30,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460501948]
[2021-02-19 19:09:30,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:31,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:31,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-02-19 19:09:31,055 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:09:31,375 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:09:31,375 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:09:31,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 10
[2021-02-19 19:09:31,381 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:09:31,385 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:09:31,386 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:09:31,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10
[2021-02-19 19:09:31,387 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:09:31,390 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:09:31,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10
[2021-02-19 19:09:31,392 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:09:31,404 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:09:31,406 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts.
[2021-02-19 19:09:31,407 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:97, output treesize:21
[2021-02-19 19:09:31,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:31,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:09:31,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12
[2021-02-19 19:09:31,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602155560]
[2021-02-19 19:09:31,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states
[2021-02-19 19:09:31,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:31,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-02-19 19:09:31,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156
[2021-02-19 19:09:31,454 INFO L87 Difference]: Start difference. First operand 158 states and 448 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:31,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:31,748 INFO L93 Difference]: Finished difference Result 330 states and 935 transitions.
[2021-02-19 19:09:31,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2021-02-19 19:09:31,748 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22
[2021-02-19 19:09:31,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:31,752 INFO L225 Difference]: With dead ends: 330
[2021-02-19 19:09:31,752 INFO L226 Difference]: Without dead ends: 315
[2021-02-19 19:09:31,752 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306
[2021-02-19 19:09:31,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states.
[2021-02-19 19:09:31,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 224.
[2021-02-19 19:09:31,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 2.8699551569506725) internal successors, (640), 223 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:31,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 640 transitions.
[2021-02-19 19:09:31,767 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 640 transitions. Word has length 22
[2021-02-19 19:09:31,768 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:31,768 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 640 transitions.
[2021-02-19 19:09:31,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:31,769 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 640 transitions.
[2021-02-19 19:09:31,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2021-02-19 19:09:31,770 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:31,770 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:31,986 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:31,986 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:31,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:31,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1584242905, now seen corresponding path program 2 times
[2021-02-19 19:09:31,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:31,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806423882]
[2021-02-19 19:09:31,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:32,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:32,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806423882]
[2021-02-19 19:09:32,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630598096]
[2021-02-19 19:09:32,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:32,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-02-19 19:09:32,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:09:32,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-02-19 19:09:32,300 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:09:32,567 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:09:32,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15
[2021-02-19 19:09:32,580 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:09:32,593 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:09:32,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14
[2021-02-19 19:09:32,596 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:09:32,608 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:09:32,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14
[2021-02-19 19:09:32,612 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:09:32,620 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:09:32,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21
[2021-02-19 19:09:32,622 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:09:32,672 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:09:32,684 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 4 xjuncts.
[2021-02-19 19:09:32,684 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:133, output treesize:122
[2021-02-19 19:09:32,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:32,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:09:32,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13
[2021-02-19 19:09:32,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132262537]
[2021-02-19 19:09:32,859 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states
[2021-02-19 19:09:32,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:32,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2021-02-19 19:09:32,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182
[2021-02-19 19:09:32,860 INFO L87 Difference]: Start difference. First operand 224 states and 640 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:33,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:33,382 INFO L93 Difference]: Finished difference Result 374 states and 1077 transitions.
[2021-02-19 19:09:33,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2021-02-19 19:09:33,382 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22
[2021-02-19 19:09:33,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:33,385 INFO L225 Difference]: With dead ends: 374
[2021-02-19 19:09:33,385 INFO L226 Difference]: Without dead ends: 359
[2021-02-19 19:09:33,385 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380
[2021-02-19 19:09:33,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states.
[2021-02-19 19:09:33,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 229.
[2021-02-19 19:09:33,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 2.912280701754386) internal successors, (664), 228 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:33,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 664 transitions.
[2021-02-19 19:09:33,392 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 664 transitions. Word has length 22
[2021-02-19 19:09:33,392 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:33,392 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 664 transitions.
[2021-02-19 19:09:33,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:33,393 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 664 transitions.
[2021-02-19 19:09:33,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2021-02-19 19:09:33,394 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:33,394 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:33,614 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2021-02-19 19:09:33,614 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:33,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:33,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1285469457, now seen corresponding path program 3 times
[2021-02-19 19:09:33,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:33,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102818108]
[2021-02-19 19:09:33,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:33,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:33,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:33,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102818108]
[2021-02-19 19:09:33,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707304710]
[2021-02-19 19:09:33,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:33,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2021-02-19 19:09:33,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:09:33,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 18 conjunts are in the unsatisfiable core
[2021-02-19 19:09:33,886 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:09:34,060 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:09:34,061 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:09:34,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10
[2021-02-19 19:09:34,062 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:09:34,073 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:09:34,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3
[2021-02-19 19:09:34,075 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:09:34,115 INFO L628 ElimStorePlain]: treesize reduction 35, result has 56.8 percent of original size
[2021-02-19 19:09:34,118 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:09:34,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10
[2021-02-19 19:09:34,120 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:09:34,135 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:09:34,138 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts.
[2021-02-19 19:09:34,139 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:121, output treesize:21
[2021-02-19 19:09:34,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:34,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:09:34,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11
[2021-02-19 19:09:34,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884130438]
[2021-02-19 19:09:34,183 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states
[2021-02-19 19:09:34,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:34,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2021-02-19 19:09:34,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132
[2021-02-19 19:09:34,184 INFO L87 Difference]: Start difference. First operand 229 states and 664 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:34,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:34,377 INFO L93 Difference]: Finished difference Result 296 states and 831 transitions.
[2021-02-19 19:09:34,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2021-02-19 19:09:34,378 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22
[2021-02-19 19:09:34,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:34,380 INFO L225 Difference]: With dead ends: 296
[2021-02-19 19:09:34,380 INFO L226 Difference]: Without dead ends: 281
[2021-02-19 19:09:34,380 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240
[2021-02-19 19:09:34,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states.
[2021-02-19 19:09:34,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 241.
[2021-02-19 19:09:34,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 2.8916666666666666) internal successors, (694), 240 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:34,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 694 transitions.
[2021-02-19 19:09:34,387 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 694 transitions. Word has length 22
[2021-02-19 19:09:34,387 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:34,387 INFO L480 AbstractCegarLoop]: Abstraction has 241 states and 694 transitions.
[2021-02-19 19:09:34,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:34,387 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 694 transitions.
[2021-02-19 19:09:34,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2021-02-19 19:09:34,388 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:34,388 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:34,601 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28
[2021-02-19 19:09:34,601 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:34,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:34,602 INFO L82 PathProgramCache]: Analyzing trace with hash 285356143, now seen corresponding path program 4 times
[2021-02-19 19:09:34,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:34,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801431690]
[2021-02-19 19:09:34,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:34,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:34,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:34,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801431690]
[2021-02-19 19:09:34,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869073680]
[2021-02-19 19:09:34,836 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:34,859 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-02-19 19:09:34,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:09:34,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-02-19 19:09:34,862 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:09:35,051 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:09:35,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14
[2021-02-19 19:09:35,054 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:09:35,061 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:09:35,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21
[2021-02-19 19:09:35,063 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:09:35,124 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:09:35,134 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:09:35,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15
[2021-02-19 19:09:35,140 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:09:35,149 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:09:35,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14
[2021-02-19 19:09:35,151 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:09:35,199 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:09:35,214 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 4 xjuncts.
[2021-02-19 19:09:35,216 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:137, output treesize:98
[2021-02-19 19:09:35,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:35,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:09:35,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12
[2021-02-19 19:09:35,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633463950]
[2021-02-19 19:09:35,379 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states
[2021-02-19 19:09:35,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:35,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-02-19 19:09:35,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156
[2021-02-19 19:09:35,380 INFO L87 Difference]: Start difference. First operand 241 states and 694 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:35,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:35,750 INFO L93 Difference]: Finished difference Result 425 states and 1233 transitions.
[2021-02-19 19:09:35,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2021-02-19 19:09:35,751 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22
[2021-02-19 19:09:35,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:35,753 INFO L225 Difference]: With dead ends: 425
[2021-02-19 19:09:35,753 INFO L226 Difference]: Without dead ends: 410
[2021-02-19 19:09:35,754 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306
[2021-02-19 19:09:35,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states.
[2021-02-19 19:09:35,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 247.
[2021-02-19 19:09:35,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 2.9186991869918697) internal successors, (718), 246 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:35,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 718 transitions.
[2021-02-19 19:09:35,761 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 718 transitions. Word has length 22
[2021-02-19 19:09:35,764 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:35,764 INFO L480 AbstractCegarLoop]: Abstraction has 247 states and 718 transitions.
[2021-02-19 19:09:35,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:35,764 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 718 transitions.
[2021-02-19 19:09:35,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-02-19 19:09:35,766 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:35,766 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:35,988 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:35,989 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:35,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:35,990 INFO L82 PathProgramCache]: Analyzing trace with hash -703639479, now seen corresponding path program 5 times
[2021-02-19 19:09:35,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:35,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959071390]
[2021-02-19 19:09:35,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:36,043 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:36,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959071390]
[2021-02-19 19:09:36,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044674277]
[2021-02-19 19:09:36,044 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:36,098 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2021-02-19 19:09:36,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:09:36,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-02-19 19:09:36,102 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:09:36,186 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:36,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:09:36,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12
[2021-02-19 19:09:36,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104208410]
[2021-02-19 19:09:36,187 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states
[2021-02-19 19:09:36,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:36,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2021-02-19 19:09:36,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132
[2021-02-19 19:09:36,188 INFO L87 Difference]: Start difference. First operand 247 states and 718 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:36,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:36,569 INFO L93 Difference]: Finished difference Result 619 states and 1783 transitions.
[2021-02-19 19:09:36,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2021-02-19 19:09:36,569 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-02-19 19:09:36,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:36,574 INFO L225 Difference]: With dead ends: 619
[2021-02-19 19:09:36,574 INFO L226 Difference]: Without dead ends: 619
[2021-02-19 19:09:36,575 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812
[2021-02-19 19:09:36,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states.
[2021-02-19 19:09:36,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 297.
[2021-02-19 19:09:36,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 3.050675675675676) internal successors, (903), 296 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:36,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 903 transitions.
[2021-02-19 19:09:36,586 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 903 transitions. Word has length 24
[2021-02-19 19:09:36,587 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:36,587 INFO L480 AbstractCegarLoop]: Abstraction has 297 states and 903 transitions.
[2021-02-19 19:09:36,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:36,587 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 903 transitions.
[2021-02-19 19:09:36,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-02-19 19:09:36,588 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:36,589 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:36,803 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52
[2021-02-19 19:09:36,803 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:36,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:36,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1679958323, now seen corresponding path program 6 times
[2021-02-19 19:09:36,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:36,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906005419]
[2021-02-19 19:09:36,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:36,852 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:36,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906005419]
[2021-02-19 19:09:36,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854322787]
[2021-02-19 19:09:36,853 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:36,889 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2021-02-19 19:09:36,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:09:36,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-02-19 19:09:36,895 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:09:36,985 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:36,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:09:36,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13
[2021-02-19 19:09:36,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66438286]
[2021-02-19 19:09:36,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states
[2021-02-19 19:09:36,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:36,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-02-19 19:09:36,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156
[2021-02-19 19:09:36,986 INFO L87 Difference]: Start difference. First operand 297 states and 903 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:37,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:37,707 INFO L93 Difference]: Finished difference Result 1078 states and 2992 transitions.
[2021-02-19 19:09:37,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states.
[2021-02-19 19:09:37,707 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-02-19 19:09:37,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:37,712 INFO L225 Difference]: With dead ends: 1078
[2021-02-19 19:09:37,712 INFO L226 Difference]: Without dead ends: 1078
[2021-02-19 19:09:37,713 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=540, Invalid=2010, Unknown=0, NotChecked=0, Total=2550
[2021-02-19 19:09:37,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states.
[2021-02-19 19:09:37,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 302.
[2021-02-19 19:09:37,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 3.083056478405316) internal successors, (928), 301 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:37,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 928 transitions.
[2021-02-19 19:09:37,726 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 928 transitions. Word has length 24
[2021-02-19 19:09:37,726 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:37,726 INFO L480 AbstractCegarLoop]: Abstraction has 302 states and 928 transitions.
[2021-02-19 19:09:37,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:37,726 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 928 transitions.
[2021-02-19 19:09:37,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-02-19 19:09:37,728 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:37,729 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:37,934 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:37,934 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:37,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:37,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1113006243, now seen corresponding path program 7 times
[2021-02-19 19:09:37,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:37,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937971606]
[2021-02-19 19:09:37,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:37,974 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:37,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937971606]
[2021-02-19 19:09:37,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530561533]
[2021-02-19 19:09:37,975 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:38,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:38,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-02-19 19:09:38,005 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:09:38,096 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:38,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:09:38,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13
[2021-02-19 19:09:38,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467124113]
[2021-02-19 19:09:38,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states
[2021-02-19 19:09:38,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:38,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-02-19 19:09:38,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156
[2021-02-19 19:09:38,100 INFO L87 Difference]: Start difference. First operand 302 states and 928 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:38,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:38,710 INFO L93 Difference]: Finished difference Result 951 states and 2692 transitions.
[2021-02-19 19:09:38,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states.
[2021-02-19 19:09:38,712 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-02-19 19:09:38,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:38,717 INFO L225 Difference]: With dead ends: 951
[2021-02-19 19:09:38,717 INFO L226 Difference]: Without dead ends: 951
[2021-02-19 19:09:38,718 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=479, Invalid=1777, Unknown=0, NotChecked=0, Total=2256
[2021-02-19 19:09:38,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states.
[2021-02-19 19:09:38,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 293.
[2021-02-19 19:09:38,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 3.0616438356164384) internal successors, (894), 292 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:38,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 894 transitions.
[2021-02-19 19:09:38,730 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 894 transitions. Word has length 24
[2021-02-19 19:09:38,731 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:38,731 INFO L480 AbstractCegarLoop]: Abstraction has 293 states and 894 transitions.
[2021-02-19 19:09:38,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:38,731 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 894 transitions.
[2021-02-19 19:09:38,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-02-19 19:09:38,732 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:38,732 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:38,953 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:38,953 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:38,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:38,954 INFO L82 PathProgramCache]: Analyzing trace with hash -176867571, now seen corresponding path program 1 times
[2021-02-19 19:09:38,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:38,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857841022]
[2021-02-19 19:09:38,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:38,995 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-02-19 19:09:38,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857841022]
[2021-02-19 19:09:38,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526191236]
[2021-02-19 19:09:38,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:39,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:39,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core
[2021-02-19 19:09:39,030 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:09:39,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-02-19 19:09:39,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:09:39,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8
[2021-02-19 19:09:39,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205641607]
[2021-02-19 19:09:39,095 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states
[2021-02-19 19:09:39,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:39,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-02-19 19:09:39,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2021-02-19 19:09:39,096 INFO L87 Difference]: Start difference. First operand 293 states and 894 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:39,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:39,194 INFO L93 Difference]: Finished difference Result 669 states and 1943 transitions.
[2021-02-19 19:09:39,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2021-02-19 19:09:39,195 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-02-19 19:09:39,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:39,198 INFO L225 Difference]: With dead ends: 669
[2021-02-19 19:09:39,198 INFO L226 Difference]: Without dead ends: 663
[2021-02-19 19:09:39,198 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156
[2021-02-19 19:09:39,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states.
[2021-02-19 19:09:39,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 413.
[2021-02-19 19:09:39,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 3.1699029126213594) internal successors, (1306), 412 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:39,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 1306 transitions.
[2021-02-19 19:09:39,210 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 1306 transitions. Word has length 24
[2021-02-19 19:09:39,210 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:39,211 INFO L480 AbstractCegarLoop]: Abstraction has 413 states and 1306 transitions.
[2021-02-19 19:09:39,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:39,211 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 1306 transitions.
[2021-02-19 19:09:39,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-02-19 19:09:39,212 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:39,212 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:39,426 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55
[2021-02-19 19:09:39,426 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:39,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:39,426 INFO L82 PathProgramCache]: Analyzing trace with hash -613836279, now seen corresponding path program 8 times
[2021-02-19 19:09:39,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:39,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629754283]
[2021-02-19 19:09:39,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:39,472 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:39,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629754283]
[2021-02-19 19:09:39,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607214986]
[2021-02-19 19:09:39,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:39,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-02-19 19:09:39,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:09:39,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-02-19 19:09:39,512 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:09:39,591 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:39,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:09:39,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12
[2021-02-19 19:09:39,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574973977]
[2021-02-19 19:09:39,592 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states
[2021-02-19 19:09:39,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:39,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-02-19 19:09:39,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156
[2021-02-19 19:09:39,593 INFO L87 Difference]: Start difference. First operand 413 states and 1306 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:39,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:39,771 INFO L93 Difference]: Finished difference Result 710 states and 2124 transitions.
[2021-02-19 19:09:39,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2021-02-19 19:09:39,771 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-02-19 19:09:39,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:39,775 INFO L225 Difference]: With dead ends: 710
[2021-02-19 19:09:39,775 INFO L226 Difference]: Without dead ends: 672
[2021-02-19 19:09:39,775 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462
[2021-02-19 19:09:39,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states.
[2021-02-19 19:09:39,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 515.
[2021-02-19 19:09:39,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 514 states have (on average 3.17704280155642) internal successors, (1633), 514 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:39,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 1633 transitions.
[2021-02-19 19:09:39,790 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 1633 transitions. Word has length 24
[2021-02-19 19:09:39,790 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:39,790 INFO L480 AbstractCegarLoop]: Abstraction has 515 states and 1633 transitions.
[2021-02-19 19:09:39,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:39,790 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 1633 transitions.
[2021-02-19 19:09:39,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-02-19 19:09:39,792 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:39,792 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:40,014 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:40,014 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:40,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:40,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1319793611, now seen corresponding path program 2 times
[2021-02-19 19:09:40,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:40,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574639747]
[2021-02-19 19:09:40,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:40,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-02-19 19:09:40,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574639747]
[2021-02-19 19:09:40,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536987692]
[2021-02-19 19:09:40,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-02-19 19:09:40,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-02-19 19:09:40,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:09:40,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core
[2021-02-19 19:09:40,104 INFO L286 TraceCheckSpWp]: Computing forward predicates...
Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:40,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-02-19 19:09:40,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:09:40,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8
[2021-02-19 19:09:40,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131344297]
[2021-02-19 19:09:40,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states
[2021-02-19 19:09:40,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:40,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-02-19 19:09:40,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2021-02-19 19:09:40,155 INFO L87 Difference]: Start difference. First operand 515 states and 1633 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:40,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:40,289 INFO L93 Difference]: Finished difference Result 830 states and 2453 transitions.
[2021-02-19 19:09:40,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2021-02-19 19:09:40,290 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-02-19 19:09:40,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:40,294 INFO L225 Difference]: With dead ends: 830
[2021-02-19 19:09:40,294 INFO L226 Difference]: Without dead ends: 830
[2021-02-19 19:09:40,295 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156
[2021-02-19 19:09:40,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states.
[2021-02-19 19:09:40,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 530.
[2021-02-19 19:09:40,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 529 states have (on average 3.153119092627599) internal successors, (1668), 529 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:40,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1668 transitions.
[2021-02-19 19:09:40,311 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1668 transitions. Word has length 24
[2021-02-19 19:09:40,312 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:40,312 INFO L480 AbstractCegarLoop]: Abstraction has 530 states and 1668 transitions.
[2021-02-19 19:09:40,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:40,312 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1668 transitions.
[2021-02-19 19:09:40,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-02-19 19:09:40,313 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:40,314 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:40,530 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:40,530 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:40,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:40,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1628492119, now seen corresponding path program 9 times
[2021-02-19 19:09:40,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:40,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525199076]
[2021-02-19 19:09:40,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:40,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:40,567 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:40,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525199076]
[2021-02-19 19:09:40,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87189146]
[2021-02-19 19:09:40,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-02-19 19:09:40,608 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2021-02-19 19:09:40,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:09:40,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-02-19 19:09:40,612 INFO L286 TraceCheckSpWp]: Computing forward predicates...
Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:40,681 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:40,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:09:40,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11
[2021-02-19 19:09:40,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889784194]
[2021-02-19 19:09:40,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states
[2021-02-19 19:09:40,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:40,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2021-02-19 19:09:40,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2021-02-19 19:09:40,685 INFO L87 Difference]: Start difference. First operand 530 states and 1668 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:40,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:40,957 INFO L93 Difference]: Finished difference Result 1196 states and 3492 transitions.
[2021-02-19 19:09:40,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2021-02-19 19:09:40,958 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-02-19 19:09:40,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:40,964 INFO L225 Difference]: With dead ends: 1196
[2021-02-19 19:09:40,964 INFO L226 Difference]: Without dead ends: 1196
[2021-02-19 19:09:40,964 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600
[2021-02-19 19:09:40,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states.
[2021-02-19 19:09:40,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 542.
[2021-02-19 19:09:40,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 541 states have (on average 3.1497227356746764) internal successors, (1704), 541 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:40,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1704 transitions.
[2021-02-19 19:09:40,986 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1704 transitions. Word has length 24
[2021-02-19 19:09:40,986 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:40,986 INFO L480 AbstractCegarLoop]: Abstraction has 542 states and 1704 transitions.
[2021-02-19 19:09:40,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:40,987 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1704 transitions.
[2021-02-19 19:09:40,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-02-19 19:09:40,988 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:40,988 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:41,210 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58
[2021-02-19 19:09:41,210 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:41,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:41,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1881561083, now seen corresponding path program 10 times
[2021-02-19 19:09:41,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:41,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251266649]
[2021-02-19 19:09:41,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:41,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:41,246 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:41,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251266649]
[2021-02-19 19:09:41,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021117348]
[2021-02-19 19:09:41,246 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:41,264 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-02-19 19:09:41,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:09:41,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-02-19 19:09:41,266 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:09:41,333 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:41,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:09:41,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11
[2021-02-19 19:09:41,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777299023]
[2021-02-19 19:09:41,334 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states
[2021-02-19 19:09:41,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:41,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2021-02-19 19:09:41,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2021-02-19 19:09:41,335 INFO L87 Difference]: Start difference. First operand 542 states and 1704 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:41,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:41,735 INFO L93 Difference]: Finished difference Result 1492 states and 4245 transitions.
[2021-02-19 19:09:41,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states.
[2021-02-19 19:09:41,736 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-02-19 19:09:41,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:41,743 INFO L225 Difference]: With dead ends: 1492
[2021-02-19 19:09:41,743 INFO L226 Difference]: Without dead ends: 1492
[2021-02-19 19:09:41,743 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=292, Invalid=968, Unknown=0, NotChecked=0, Total=1260
[2021-02-19 19:09:41,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states.
[2021-02-19 19:09:41,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 586.
[2021-02-19 19:09:41,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 585 states have (on average 3.1555555555555554) internal successors, (1846), 585 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:41,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 1846 transitions.
[2021-02-19 19:09:41,777 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 1846 transitions. Word has length 24
[2021-02-19 19:09:41,777 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:41,777 INFO L480 AbstractCegarLoop]: Abstraction has 586 states and 1846 transitions.
[2021-02-19 19:09:41,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:41,777 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1846 transitions.
[2021-02-19 19:09:41,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-02-19 19:09:41,779 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:41,779 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:42,000 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59
[2021-02-19 19:09:42,000 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:42,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:42,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1330383557, now seen corresponding path program 11 times
[2021-02-19 19:09:42,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:42,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881330548]
[2021-02-19 19:09:42,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:42,039 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:42,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881330548]
[2021-02-19 19:09:42,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232821536]
[2021-02-19 19:09:42,039 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:42,090 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-02-19 19:09:42,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:09:42,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-02-19 19:09:42,092 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:09:42,167 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:42,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:09:42,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12
[2021-02-19 19:09:42,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684624960]
[2021-02-19 19:09:42,168 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states
[2021-02-19 19:09:42,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:42,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-02-19 19:09:42,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156
[2021-02-19 19:09:42,168 INFO L87 Difference]: Start difference. First operand 586 states and 1846 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:42,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:42,378 INFO L93 Difference]: Finished difference Result 1258 states and 3765 transitions.
[2021-02-19 19:09:42,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2021-02-19 19:09:42,378 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-02-19 19:09:42,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:42,384 INFO L225 Difference]: With dead ends: 1258
[2021-02-19 19:09:42,384 INFO L226 Difference]: Without dead ends: 1248
[2021-02-19 19:09:42,384 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600
[2021-02-19 19:09:42,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states.
[2021-02-19 19:09:42,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 758.
[2021-02-19 19:09:42,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 757 states have (on average 3.224570673712021) internal successors, (2441), 757 states have internal predecessors, (2441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:42,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 2441 transitions.
[2021-02-19 19:09:42,408 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 2441 transitions. Word has length 24
[2021-02-19 19:09:42,408 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:42,408 INFO L480 AbstractCegarLoop]: Abstraction has 758 states and 2441 transitions.
[2021-02-19 19:09:42,408 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:42,409 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 2441 transitions.
[2021-02-19 19:09:42,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-02-19 19:09:42,410 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:42,410 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:42,632 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60
[2021-02-19 19:09:42,632 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:42,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:42,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1493505621, now seen corresponding path program 12 times
[2021-02-19 19:09:42,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:42,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477172241]
[2021-02-19 19:09:42,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:42,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:42,669 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:42,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477172241]
[2021-02-19 19:09:42,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350573726]
[2021-02-19 19:09:42,669 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:42,712 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2021-02-19 19:09:42,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:09:42,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-02-19 19:09:42,714 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:09:42,783 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:42,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:09:42,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12
[2021-02-19 19:09:42,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896317201]
[2021-02-19 19:09:42,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states
[2021-02-19 19:09:42,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:42,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-02-19 19:09:42,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156
[2021-02-19 19:09:42,785 INFO L87 Difference]: Start difference. First operand 758 states and 2441 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:43,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:43,035 INFO L93 Difference]: Finished difference Result 1329 states and 4025 transitions.
[2021-02-19 19:09:43,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2021-02-19 19:09:43,036 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-02-19 19:09:43,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:43,040 INFO L225 Difference]: With dead ends: 1329
[2021-02-19 19:09:43,040 INFO L226 Difference]: Without dead ends: 1329
[2021-02-19 19:09:43,041 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=211, Invalid=491, Unknown=0, NotChecked=0, Total=702
[2021-02-19 19:09:43,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states.
[2021-02-19 19:09:43,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 764.
[2021-02-19 19:09:43,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 763 states have (on average 3.220183486238532) internal successors, (2457), 763 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:43,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 2457 transitions.
[2021-02-19 19:09:43,067 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 2457 transitions. Word has length 24
[2021-02-19 19:09:43,067 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:43,067 INFO L480 AbstractCegarLoop]: Abstraction has 764 states and 2457 transitions.
[2021-02-19 19:09:43,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:43,067 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 2457 transitions.
[2021-02-19 19:09:43,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-02-19 19:09:43,069 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:43,069 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:43,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:43,291 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:43,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:43,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1926382225, now seen corresponding path program 13 times
[2021-02-19 19:09:43,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:43,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795410321]
[2021-02-19 19:09:43,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:43,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:43,329 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:43,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795410321]
[2021-02-19 19:09:43,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683113824]
[2021-02-19 19:09:43,330 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:43,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-02-19 19:09:43,350 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:09:43,405 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:43,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:09:43,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11
[2021-02-19 19:09:43,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580051972]
[2021-02-19 19:09:43,406 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states
[2021-02-19 19:09:43,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:43,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2021-02-19 19:09:43,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2021-02-19 19:09:43,407 INFO L87 Difference]: Start difference. First operand 764 states and 2457 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:43,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:43,713 INFO L93 Difference]: Finished difference Result 1548 states and 4638 transitions.
[2021-02-19 19:09:43,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2021-02-19 19:09:43,714 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-02-19 19:09:43,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:43,720 INFO L225 Difference]: With dead ends: 1548
[2021-02-19 19:09:43,720 INFO L226 Difference]: Without dead ends: 1544
[2021-02-19 19:09:43,720 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930
[2021-02-19 19:09:43,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states.
[2021-02-19 19:09:43,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 772.
[2021-02-19 19:09:43,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 771 states have (on average 3.204928664072633) internal successors, (2471), 771 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:43,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 2471 transitions.
[2021-02-19 19:09:43,746 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 2471 transitions. Word has length 24
[2021-02-19 19:09:43,746 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:43,746 INFO L480 AbstractCegarLoop]: Abstraction has 772 states and 2471 transitions.
[2021-02-19 19:09:43,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:43,746 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 2471 transitions.
[2021-02-19 19:09:43,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-02-19 19:09:43,748 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:43,748 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:43,970 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:43,970 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:43,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:43,970 INFO L82 PathProgramCache]: Analyzing trace with hash 2096575881, now seen corresponding path program 14 times
[2021-02-19 19:09:43,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:43,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357526269]
[2021-02-19 19:09:43,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:43,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:44,012 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:44,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357526269]
[2021-02-19 19:09:44,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214664702]
[2021-02-19 19:09:44,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:44,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-02-19 19:09:44,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:09:44,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-02-19 19:09:44,047 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:09:44,137 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:44,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:09:44,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13
[2021-02-19 19:09:44,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431903657]
[2021-02-19 19:09:44,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states
[2021-02-19 19:09:44,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:44,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-02-19 19:09:44,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156
[2021-02-19 19:09:44,140 INFO L87 Difference]: Start difference. First operand 772 states and 2471 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:44,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:44,861 INFO L93 Difference]: Finished difference Result 2734 states and 8136 transitions.
[2021-02-19 19:09:44,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states.
[2021-02-19 19:09:44,861 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-02-19 19:09:44,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:44,872 INFO L225 Difference]: With dead ends: 2734
[2021-02-19 19:09:44,872 INFO L226 Difference]: Without dead ends: 2734
[2021-02-19 19:09:44,873 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=584, Invalid=1966, Unknown=0, NotChecked=0, Total=2550
[2021-02-19 19:09:44,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2734 states.
[2021-02-19 19:09:44,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2734 to 841.
[2021-02-19 19:09:44,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 840 states have (on average 3.3107142857142855) internal successors, (2781), 840 states have internal predecessors, (2781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:44,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 2781 transitions.
[2021-02-19 19:09:44,908 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 2781 transitions. Word has length 24
[2021-02-19 19:09:44,908 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:44,909 INFO L480 AbstractCegarLoop]: Abstraction has 841 states and 2781 transitions.
[2021-02-19 19:09:44,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:44,909 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 2781 transitions.
[2021-02-19 19:09:44,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-02-19 19:09:44,911 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:44,911 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:45,133 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:45,133 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:45,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:45,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1631439335, now seen corresponding path program 15 times
[2021-02-19 19:09:45,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:45,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941026002]
[2021-02-19 19:09:45,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:45,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:45,172 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:45,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941026002]
[2021-02-19 19:09:45,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205418355]
[2021-02-19 19:09:45,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:45,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2021-02-19 19:09:45,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:09:45,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-02-19 19:09:45,196 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:09:45,281 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:45,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:09:45,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13
[2021-02-19 19:09:45,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190830971]
[2021-02-19 19:09:45,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states
[2021-02-19 19:09:45,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:45,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-02-19 19:09:45,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156
[2021-02-19 19:09:45,283 INFO L87 Difference]: Start difference. First operand 841 states and 2781 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:45,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:45,960 INFO L93 Difference]: Finished difference Result 2693 states and 8043 transitions.
[2021-02-19 19:09:45,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states.
[2021-02-19 19:09:45,961 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-02-19 19:09:45,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:45,968 INFO L225 Difference]: With dead ends: 2693
[2021-02-19 19:09:45,968 INFO L226 Difference]: Without dead ends: 2693
[2021-02-19 19:09:45,969 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=584, Invalid=1966, Unknown=0, NotChecked=0, Total=2550
[2021-02-19 19:09:45,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states.
[2021-02-19 19:09:46,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 831.
[2021-02-19 19:09:46,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 830 states have (on average 3.289156626506024) internal successors, (2730), 830 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:46,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 2730 transitions.
[2021-02-19 19:09:46,031 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 2730 transitions. Word has length 24
[2021-02-19 19:09:46,031 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:46,031 INFO L480 AbstractCegarLoop]: Abstraction has 831 states and 2730 transitions.
[2021-02-19 19:09:46,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:46,032 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 2730 transitions.
[2021-02-19 19:09:46,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-02-19 19:09:46,034 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:46,034 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:46,247 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64
[2021-02-19 19:09:46,247 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:46,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:46,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1491182103, now seen corresponding path program 16 times
[2021-02-19 19:09:46,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:46,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241289688]
[2021-02-19 19:09:46,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:46,302 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:46,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241289688]
[2021-02-19 19:09:46,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474563284]
[2021-02-19 19:09:46,302 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-02-19 19:09:46,343 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-02-19 19:09:46,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:09:46,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-02-19 19:09:46,345 INFO L286 TraceCheckSpWp]: Computing forward predicates...
Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:46,431 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:46,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:09:46,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12
[2021-02-19 19:09:46,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813341948]
[2021-02-19 19:09:46,433 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states
[2021-02-19 19:09:46,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:46,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2021-02-19 19:09:46,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132
[2021-02-19 19:09:46,434 INFO L87 Difference]: Start difference. First operand 831 states and 2730 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:47,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:47,014 INFO L93 Difference]: Finished difference Result 2677 states and 7780 transitions.
[2021-02-19 19:09:47,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states.
[2021-02-19 19:09:47,015 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-02-19 19:09:47,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:47,021 INFO L225 Difference]: With dead ends: 2677
[2021-02-19 19:09:47,021 INFO L226 Difference]: Without dead ends: 2677
[2021-02-19 19:09:47,022 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=493, Invalid=1669, Unknown=0, NotChecked=0, Total=2162
[2021-02-19 19:09:47,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2677 states.
[2021-02-19 19:09:47,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2677 to 845.
[2021-02-19 19:09:47,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 844 states have (on average 3.2997630331753554) internal successors, (2785), 844 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:47,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2785 transitions.
[2021-02-19 19:09:47,055 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2785 transitions. Word has length 24
[2021-02-19 19:09:47,055 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:47,055 INFO L480 AbstractCegarLoop]: Abstraction has 845 states and 2785 transitions.
[2021-02-19 19:09:47,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:47,055 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2785 transitions.
[2021-02-19 19:09:47,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-02-19 19:09:47,057 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:47,057 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:47,280 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65
[2021-02-19 19:09:47,280 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:47,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:47,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1572558191, now seen corresponding path program 17 times
[2021-02-19 19:09:47,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:47,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052516918]
[2021-02-19 19:09:47,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:47,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:47,325 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:47,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052516918]
[2021-02-19 19:09:47,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618605066]
[2021-02-19 19:09:47,325 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:47,356 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s)
[2021-02-19 19:09:47,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:09:47,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-02-19 19:09:47,357 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:09:47,417 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:47,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:09:47,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12
[2021-02-19 19:09:47,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716879948]
[2021-02-19 19:09:47,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states
[2021-02-19 19:09:47,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:47,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2021-02-19 19:09:47,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132
[2021-02-19 19:09:47,418 INFO L87 Difference]: Start difference. First operand 845 states and 2785 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:48,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:48,052 INFO L93 Difference]: Finished difference Result 2474 states and 7308 transitions.
[2021-02-19 19:09:48,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states.
[2021-02-19 19:09:48,052 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-02-19 19:09:48,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:48,057 INFO L225 Difference]: With dead ends: 2474
[2021-02-19 19:09:48,057 INFO L226 Difference]: Without dead ends: 2470
[2021-02-19 19:09:48,058 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=448, Invalid=1444, Unknown=0, NotChecked=0, Total=1892
[2021-02-19 19:09:48,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states.
[2021-02-19 19:09:48,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 845.
[2021-02-19 19:09:48,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 844 states have (on average 3.2973933649289098) internal successors, (2783), 844 states have internal predecessors, (2783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:48,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2783 transitions.
[2021-02-19 19:09:48,088 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2783 transitions. Word has length 24
[2021-02-19 19:09:48,088 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:48,089 INFO L480 AbstractCegarLoop]: Abstraction has 845 states and 2783 transitions.
[2021-02-19 19:09:48,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:48,089 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2783 transitions.
[2021-02-19 19:09:48,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-02-19 19:09:48,091 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:48,091 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:48,313 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66
[2021-02-19 19:09:48,313 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:48,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:48,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1791751889, now seen corresponding path program 18 times
[2021-02-19 19:09:48,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:48,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57468158]
[2021-02-19 19:09:48,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:48,353 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:48,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57468158]
[2021-02-19 19:09:48,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668832480]
[2021-02-19 19:09:48,354 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:48,377 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2021-02-19 19:09:48,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:09:48,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-02-19 19:09:48,378 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:09:48,456 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:48,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:09:48,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13
[2021-02-19 19:09:48,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555846725]
[2021-02-19 19:09:48,457 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states
[2021-02-19 19:09:48,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:48,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-02-19 19:09:48,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156
[2021-02-19 19:09:48,458 INFO L87 Difference]: Start difference. First operand 845 states and 2783 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:49,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:49,031 INFO L93 Difference]: Finished difference Result 2514 states and 7408 transitions.
[2021-02-19 19:09:49,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states.
[2021-02-19 19:09:49,031 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-02-19 19:09:49,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:49,037 INFO L225 Difference]: With dead ends: 2514
[2021-02-19 19:09:49,037 INFO L226 Difference]: Without dead ends: 2514
[2021-02-19 19:09:49,038 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=480, Invalid=1590, Unknown=0, NotChecked=0, Total=2070
[2021-02-19 19:09:49,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states.
[2021-02-19 19:09:49,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 853.
[2021-02-19 19:09:49,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 852 states have (on average 3.3039906103286385) internal successors, (2815), 852 states have internal predecessors, (2815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:49,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 2815 transitions.
[2021-02-19 19:09:49,092 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 2815 transitions. Word has length 24
[2021-02-19 19:09:49,092 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:49,092 INFO L480 AbstractCegarLoop]: Abstraction has 853 states and 2815 transitions.
[2021-02-19 19:09:49,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:49,092 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 2815 transitions.
[2021-02-19 19:09:49,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-02-19 19:09:49,094 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:49,095 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:49,315 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67
[2021-02-19 19:09:49,316 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:49,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:49,316 INFO L82 PathProgramCache]: Analyzing trace with hash -148712735, now seen corresponding path program 19 times
[2021-02-19 19:09:49,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:49,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132344117]
[2021-02-19 19:09:49,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:49,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:49,352 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:49,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132344117]
[2021-02-19 19:09:49,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467425959]
[2021-02-19 19:09:49,353 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:49,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:49,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-02-19 19:09:49,374 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:09:49,460 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:49,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:09:49,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13
[2021-02-19 19:09:49,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328877072]
[2021-02-19 19:09:49,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states
[2021-02-19 19:09:49,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:49,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-02-19 19:09:49,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156
[2021-02-19 19:09:49,463 INFO L87 Difference]: Start difference. First operand 853 states and 2815 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:50,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:50,014 INFO L93 Difference]: Finished difference Result 2332 states and 6984 transitions.
[2021-02-19 19:09:50,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states.
[2021-02-19 19:09:50,015 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-02-19 19:09:50,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:50,021 INFO L225 Difference]: With dead ends: 2332
[2021-02-19 19:09:50,021 INFO L226 Difference]: Without dead ends: 2328
[2021-02-19 19:09:50,022 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=460, Invalid=1432, Unknown=0, NotChecked=0, Total=1892
[2021-02-19 19:09:50,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2328 states.
[2021-02-19 19:09:50,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2328 to 853.
[2021-02-19 19:09:50,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 852 states have (on average 3.301643192488263) internal successors, (2813), 852 states have internal predecessors, (2813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:50,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 2813 transitions.
[2021-02-19 19:09:50,054 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 2813 transitions. Word has length 24
[2021-02-19 19:09:50,054 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:50,054 INFO L480 AbstractCegarLoop]: Abstraction has 853 states and 2813 transitions.
[2021-02-19 19:09:50,054 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:50,055 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 2813 transitions.
[2021-02-19 19:09:50,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-02-19 19:09:50,057 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:50,057 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:50,280 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68
[2021-02-19 19:09:50,280 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:50,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:50,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1060998287, now seen corresponding path program 3 times
[2021-02-19 19:09:50,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:50,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20465607]
[2021-02-19 19:09:50,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:50,305 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-02-19 19:09:50,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20465607]
[2021-02-19 19:09:50,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008752883]
[2021-02-19 19:09:50,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:50,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2021-02-19 19:09:50,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:09:50,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core
[2021-02-19 19:09:50,324 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:09:50,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-02-19 19:09:50,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:09:50,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8
[2021-02-19 19:09:50,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159491272]
[2021-02-19 19:09:50,368 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states
[2021-02-19 19:09:50,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:50,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-02-19 19:09:50,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2021-02-19 19:09:50,369 INFO L87 Difference]: Start difference. First operand 853 states and 2813 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:50,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:50,439 INFO L93 Difference]: Finished difference Result 929 states and 3034 transitions.
[2021-02-19 19:09:50,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2021-02-19 19:09:50,439 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-02-19 19:09:50,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:50,442 INFO L225 Difference]: With dead ends: 929
[2021-02-19 19:09:50,442 INFO L226 Difference]: Without dead ends: 929
[2021-02-19 19:09:50,442 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132
[2021-02-19 19:09:50,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states.
[2021-02-19 19:09:50,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 780.
[2021-02-19 19:09:50,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 779 states have (on average 3.3029525032092426) internal successors, (2573), 779 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:50,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 2573 transitions.
[2021-02-19 19:09:50,458 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 2573 transitions. Word has length 24
[2021-02-19 19:09:50,459 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:50,459 INFO L480 AbstractCegarLoop]: Abstraction has 780 states and 2573 transitions.
[2021-02-19 19:09:50,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:50,459 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 2573 transitions.
[2021-02-19 19:09:50,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-02-19 19:09:50,461 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:50,461 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:50,681 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:50,681 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:50,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:50,682 INFO L82 PathProgramCache]: Analyzing trace with hash -130798543, now seen corresponding path program 20 times
[2021-02-19 19:09:50,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:50,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720741421]
[2021-02-19 19:09:50,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:50,716 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:50,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720741421]
[2021-02-19 19:09:50,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782226619]
[2021-02-19 19:09:50,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:50,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-02-19 19:09:50,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:09:50,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-02-19 19:09:50,737 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:09:50,785 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:50,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:09:50,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10
[2021-02-19 19:09:50,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303382301]
[2021-02-19 19:09:50,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states
[2021-02-19 19:09:50,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:50,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-02-19 19:09:50,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90
[2021-02-19 19:09:50,787 INFO L87 Difference]: Start difference. First operand 780 states and 2573 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:51,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:51,042 INFO L93 Difference]: Finished difference Result 1555 states and 4761 transitions.
[2021-02-19 19:09:51,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2021-02-19 19:09:51,043 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-02-19 19:09:51,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:51,046 INFO L225 Difference]: With dead ends: 1555
[2021-02-19 19:09:51,046 INFO L226 Difference]: Without dead ends: 1555
[2021-02-19 19:09:51,046 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702
[2021-02-19 19:09:51,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states.
[2021-02-19 19:09:51,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 842.
[2021-02-19 19:09:51,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 841 states have (on average 3.296076099881094) internal successors, (2772), 841 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:51,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 2772 transitions.
[2021-02-19 19:09:51,067 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 2772 transitions. Word has length 24
[2021-02-19 19:09:51,067 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:51,067 INFO L480 AbstractCegarLoop]: Abstraction has 842 states and 2772 transitions.
[2021-02-19 19:09:51,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:51,067 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 2772 transitions.
[2021-02-19 19:09:51,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-02-19 19:09:51,069 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:51,069 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:51,282 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,24 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:51,282 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:51,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:51,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1771880909, now seen corresponding path program 21 times
[2021-02-19 19:09:51,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:51,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572427476]
[2021-02-19 19:09:51,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:51,325 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:51,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572427476]
[2021-02-19 19:09:51,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302389469]
[2021-02-19 19:09:51,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:51,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2021-02-19 19:09:51,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:09:51,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-02-19 19:09:51,344 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:09:51,390 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:51,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:09:51,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9
[2021-02-19 19:09:51,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343495661]
[2021-02-19 19:09:51,391 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states
[2021-02-19 19:09:51,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:51,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2021-02-19 19:09:51,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72
[2021-02-19 19:09:51,392 INFO L87 Difference]: Start difference. First operand 842 states and 2772 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:51,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:51,605 INFO L93 Difference]: Finished difference Result 1605 states and 4891 transitions.
[2021-02-19 19:09:51,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2021-02-19 19:09:51,605 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-02-19 19:09:51,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:51,608 INFO L225 Difference]: With dead ends: 1605
[2021-02-19 19:09:51,608 INFO L226 Difference]: Without dead ends: 1605
[2021-02-19 19:09:51,608 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600
[2021-02-19 19:09:51,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1605 states.
[2021-02-19 19:09:51,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1605 to 896.
[2021-02-19 19:09:51,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 895 states have (on average 3.2905027932960893) internal successors, (2945), 895 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:51,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 2945 transitions.
[2021-02-19 19:09:51,627 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 2945 transitions. Word has length 24
[2021-02-19 19:09:51,628 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:51,628 INFO L480 AbstractCegarLoop]: Abstraction has 896 states and 2945 transitions.
[2021-02-19 19:09:51,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:51,628 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 2945 transitions.
[2021-02-19 19:09:51,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-02-19 19:09:51,630 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:51,630 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:51,850 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:51,850 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:51,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:51,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1727059767, now seen corresponding path program 22 times
[2021-02-19 19:09:51,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:51,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750616688]
[2021-02-19 19:09:51,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:51,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:51,882 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-02-19 19:09:51,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750616688]
[2021-02-19 19:09:51,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072480510]
[2021-02-19 19:09:51,882 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:51,900 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-02-19 19:09:51,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:09:51,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-02-19 19:09:51,901 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:09:51,940 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-02-19 19:09:51,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:09:51,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9
[2021-02-19 19:09:51,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622393140]
[2021-02-19 19:09:51,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states
[2021-02-19 19:09:51,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:51,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2021-02-19 19:09:51,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72
[2021-02-19 19:09:51,941 INFO L87 Difference]: Start difference. First operand 896 states and 2945 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:52,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:52,110 INFO L93 Difference]: Finished difference Result 1524 states and 4690 transitions.
[2021-02-19 19:09:52,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2021-02-19 19:09:52,110 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-02-19 19:09:52,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:52,113 INFO L225 Difference]: With dead ends: 1524
[2021-02-19 19:09:52,113 INFO L226 Difference]: Without dead ends: 1520
[2021-02-19 19:09:52,113 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420
[2021-02-19 19:09:52,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states.
[2021-02-19 19:09:52,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 896.
[2021-02-19 19:09:52,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 895 states have (on average 3.288268156424581) internal successors, (2943), 895 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:52,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 2943 transitions.
[2021-02-19 19:09:52,130 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 2943 transitions. Word has length 24
[2021-02-19 19:09:52,130 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:52,130 INFO L480 AbstractCegarLoop]: Abstraction has 896 states and 2943 transitions.
[2021-02-19 19:09:52,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:52,130 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 2943 transitions.
[2021-02-19 19:09:52,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-02-19 19:09:52,133 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:52,133 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:52,346 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72
[2021-02-19 19:09:52,346 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:52,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:52,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1970570871, now seen corresponding path program 23 times
[2021-02-19 19:09:52,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:52,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448087040]
[2021-02-19 19:09:52,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:52,379 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:52,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448087040]
[2021-02-19 19:09:52,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668279642]
[2021-02-19 19:09:52,379 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:52,400 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2021-02-19 19:09:52,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:09:52,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-02-19 19:09:52,401 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:09:52,446 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:52,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:09:52,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10
[2021-02-19 19:09:52,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477098916]
[2021-02-19 19:09:52,446 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states
[2021-02-19 19:09:52,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:52,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-02-19 19:09:52,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90
[2021-02-19 19:09:52,447 INFO L87 Difference]: Start difference. First operand 896 states and 2943 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:52,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:52,651 INFO L93 Difference]: Finished difference Result 1508 states and 4652 transitions.
[2021-02-19 19:09:52,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2021-02-19 19:09:52,651 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-02-19 19:09:52,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:52,657 INFO L225 Difference]: With dead ends: 1508
[2021-02-19 19:09:52,657 INFO L226 Difference]: Without dead ends: 1496
[2021-02-19 19:09:52,659 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552
[2021-02-19 19:09:52,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states.
[2021-02-19 19:09:52,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 904.
[2021-02-19 19:09:52,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 903 states have (on average 3.276854928017719) internal successors, (2959), 903 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:52,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 2959 transitions.
[2021-02-19 19:09:52,686 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 2959 transitions. Word has length 24
[2021-02-19 19:09:52,686 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:52,686 INFO L480 AbstractCegarLoop]: Abstraction has 904 states and 2959 transitions.
[2021-02-19 19:09:52,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:52,687 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 2959 transitions.
[2021-02-19 19:09:52,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-02-19 19:09:52,688 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:52,689 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:52,902 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:52,902 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:52,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:52,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1797976141, now seen corresponding path program 24 times
[2021-02-19 19:09:52,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:52,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342318261]
[2021-02-19 19:09:52,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:52,938 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:52,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342318261]
[2021-02-19 19:09:52,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425855102]
[2021-02-19 19:09:52,939 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:52,985 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2021-02-19 19:09:52,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:09:52,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-02-19 19:09:52,986 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:09:53,059 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:53,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:09:53,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13
[2021-02-19 19:09:53,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47164520]
[2021-02-19 19:09:53,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states
[2021-02-19 19:09:53,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:53,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-02-19 19:09:53,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2021-02-19 19:09:53,061 INFO L87 Difference]: Start difference. First operand 904 states and 2959 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:53,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:53,575 INFO L93 Difference]: Finished difference Result 2412 states and 7565 transitions.
[2021-02-19 19:09:53,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states.
[2021-02-19 19:09:53,576 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-02-19 19:09:53,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:53,580 INFO L225 Difference]: With dead ends: 2412
[2021-02-19 19:09:53,580 INFO L226 Difference]: Without dead ends: 2412
[2021-02-19 19:09:53,581 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=358, Invalid=1124, Unknown=0, NotChecked=0, Total=1482
[2021-02-19 19:09:53,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states.
[2021-02-19 19:09:53,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 960.
[2021-02-19 19:09:53,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 959 states have (on average 3.367049009384776) internal successors, (3229), 959 states have internal predecessors, (3229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:53,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 3229 transitions.
[2021-02-19 19:09:53,609 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 3229 transitions. Word has length 24
[2021-02-19 19:09:53,609 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:53,610 INFO L480 AbstractCegarLoop]: Abstraction has 960 states and 3229 transitions.
[2021-02-19 19:09:53,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:53,610 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 3229 transitions.
[2021-02-19 19:09:53,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-02-19 19:09:53,612 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:53,612 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:53,826 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74
[2021-02-19 19:09:53,826 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:53,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:53,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1930039075, now seen corresponding path program 25 times
[2021-02-19 19:09:53,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:53,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094154352]
[2021-02-19 19:09:53,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:53,863 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:53,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094154352]
[2021-02-19 19:09:53,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145693541]
[2021-02-19 19:09:53,864 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:53,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-02-19 19:09:53,898 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:09:53,984 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:53,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:09:53,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13
[2021-02-19 19:09:53,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115421339]
[2021-02-19 19:09:53,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states
[2021-02-19 19:09:53,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:53,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-02-19 19:09:53,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2021-02-19 19:09:53,986 INFO L87 Difference]: Start difference. First operand 960 states and 3229 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:54,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:54,424 INFO L93 Difference]: Finished difference Result 2335 states and 7372 transitions.
[2021-02-19 19:09:54,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states.
[2021-02-19 19:09:54,424 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-02-19 19:09:54,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:54,429 INFO L225 Difference]: With dead ends: 2335
[2021-02-19 19:09:54,429 INFO L226 Difference]: Without dead ends: 2335
[2021-02-19 19:09:54,430 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=358, Invalid=1124, Unknown=0, NotChecked=0, Total=1482
[2021-02-19 19:09:54,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2335 states.
[2021-02-19 19:09:54,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2335 to 957.
[2021-02-19 19:09:54,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 3.3629707112970713) internal successors, (3215), 956 states have internal predecessors, (3215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:54,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3215 transitions.
[2021-02-19 19:09:54,461 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 3215 transitions. Word has length 24
[2021-02-19 19:09:54,461 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:54,461 INFO L480 AbstractCegarLoop]: Abstraction has 957 states and 3215 transitions.
[2021-02-19 19:09:54,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:54,462 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 3215 transitions.
[2021-02-19 19:09:54,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-02-19 19:09:54,464 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:54,464 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:54,685 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:54,685 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:54,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:54,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1192582363, now seen corresponding path program 26 times
[2021-02-19 19:09:54,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:54,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186779597]
[2021-02-19 19:09:54,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:54,725 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:54,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186779597]
[2021-02-19 19:09:54,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843388382]
[2021-02-19 19:09:54,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:54,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-02-19 19:09:54,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:09:54,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-02-19 19:09:54,744 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:09:54,829 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:54,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:09:54,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12
[2021-02-19 19:09:54,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695049157]
[2021-02-19 19:09:54,829 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states
[2021-02-19 19:09:54,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:54,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2021-02-19 19:09:54,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132
[2021-02-19 19:09:54,831 INFO L87 Difference]: Start difference. First operand 957 states and 3215 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:55,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:55,244 INFO L93 Difference]: Finished difference Result 2285 states and 7121 transitions.
[2021-02-19 19:09:55,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states.
[2021-02-19 19:09:55,246 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-02-19 19:09:55,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:55,249 INFO L225 Difference]: With dead ends: 2285
[2021-02-19 19:09:55,249 INFO L226 Difference]: Without dead ends: 2285
[2021-02-19 19:09:55,250 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=292, Invalid=898, Unknown=0, NotChecked=0, Total=1190
[2021-02-19 19:09:55,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states.
[2021-02-19 19:09:55,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 963.
[2021-02-19 19:09:55,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 3.367983367983368) internal successors, (3240), 962 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:55,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 3240 transitions.
[2021-02-19 19:09:55,273 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 3240 transitions. Word has length 24
[2021-02-19 19:09:55,273 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:55,273 INFO L480 AbstractCegarLoop]: Abstraction has 963 states and 3240 transitions.
[2021-02-19 19:09:55,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:55,274 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 3240 transitions.
[2021-02-19 19:09:55,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-02-19 19:09:55,276 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:55,276 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:55,480 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76
[2021-02-19 19:09:55,480 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:55,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:55,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1273958451, now seen corresponding path program 27 times
[2021-02-19 19:09:55,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:55,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066861574]
[2021-02-19 19:09:55,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:55,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:55,510 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:55,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066861574]
[2021-02-19 19:09:55,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3957217]
[2021-02-19 19:09:55,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:55,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2021-02-19 19:09:55,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:09:55,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-02-19 19:09:55,533 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:09:55,590 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:55,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:09:55,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12
[2021-02-19 19:09:55,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334351039]
[2021-02-19 19:09:55,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states
[2021-02-19 19:09:55,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:55,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2021-02-19 19:09:55,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132
[2021-02-19 19:09:55,591 INFO L87 Difference]: Start difference. First operand 963 states and 3240 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:55,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:55,911 INFO L93 Difference]: Finished difference Result 2176 states and 6849 transitions.
[2021-02-19 19:09:55,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2021-02-19 19:09:55,911 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-02-19 19:09:55,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:55,914 INFO L225 Difference]: With dead ends: 2176
[2021-02-19 19:09:55,914 INFO L226 Difference]: Without dead ends: 2172
[2021-02-19 19:09:55,915 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930
[2021-02-19 19:09:55,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states.
[2021-02-19 19:09:55,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 957.
[2021-02-19 19:09:55,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 3.3629707112970713) internal successors, (3215), 956 states have internal predecessors, (3215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:55,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3215 transitions.
[2021-02-19 19:09:55,958 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 3215 transitions. Word has length 24
[2021-02-19 19:09:55,958 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:55,958 INFO L480 AbstractCegarLoop]: Abstraction has 957 states and 3215 transitions.
[2021-02-19 19:09:55,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:55,958 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 3215 transitions.
[2021-02-19 19:09:55,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-02-19 19:09:55,961 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:55,961 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:56,175 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:56,175 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:56,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:56,175 INFO L82 PathProgramCache]: Analyzing trace with hash -2090351629, now seen corresponding path program 28 times
[2021-02-19 19:09:56,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:56,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719945854]
[2021-02-19 19:09:56,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:56,206 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:56,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719945854]
[2021-02-19 19:09:56,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496450883]
[2021-02-19 19:09:56,207 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:56,224 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-02-19 19:09:56,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:09:56,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-02-19 19:09:56,226 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:09:56,297 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:56,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:09:56,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13
[2021-02-19 19:09:56,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716022232]
[2021-02-19 19:09:56,298 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states
[2021-02-19 19:09:56,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:56,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-02-19 19:09:56,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156
[2021-02-19 19:09:56,298 INFO L87 Difference]: Start difference. First operand 957 states and 3215 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:56,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:56,649 INFO L93 Difference]: Finished difference Result 2199 states and 6893 transitions.
[2021-02-19 19:09:56,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states.
[2021-02-19 19:09:56,650 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-02-19 19:09:56,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:56,653 INFO L225 Difference]: With dead ends: 2199
[2021-02-19 19:09:56,653 INFO L226 Difference]: Without dead ends: 2199
[2021-02-19 19:09:56,653 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=257, Invalid=799, Unknown=0, NotChecked=0, Total=1056
[2021-02-19 19:09:56,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states.
[2021-02-19 19:09:56,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 963.
[2021-02-19 19:09:56,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 3.367983367983368) internal successors, (3240), 962 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:56,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 3240 transitions.
[2021-02-19 19:09:56,670 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 3240 transitions. Word has length 24
[2021-02-19 19:09:56,670 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:56,670 INFO L480 AbstractCegarLoop]: Abstraction has 963 states and 3240 transitions.
[2021-02-19 19:09:56,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:56,671 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 3240 transitions.
[2021-02-19 19:09:56,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-02-19 19:09:56,673 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:56,673 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:56,882 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78
[2021-02-19 19:09:56,882 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:56,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:56,882 INFO L82 PathProgramCache]: Analyzing trace with hash -447312475, now seen corresponding path program 29 times
[2021-02-19 19:09:56,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:56,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885339494]
[2021-02-19 19:09:56,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:56,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:56,924 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:56,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885339494]
[2021-02-19 19:09:56,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033705653]
[2021-02-19 19:09:56,925 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:56,951 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2021-02-19 19:09:56,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:09:56,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-02-19 19:09:56,952 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:09:57,018 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:57,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:09:57,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13
[2021-02-19 19:09:57,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109988926]
[2021-02-19 19:09:57,019 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states
[2021-02-19 19:09:57,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:57,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-02-19 19:09:57,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156
[2021-02-19 19:09:57,019 INFO L87 Difference]: Start difference. First operand 963 states and 3240 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:57,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:57,367 INFO L93 Difference]: Finished difference Result 2156 states and 6791 transitions.
[2021-02-19 19:09:57,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2021-02-19 19:09:57,369 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-02-19 19:09:57,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:57,373 INFO L225 Difference]: With dead ends: 2156
[2021-02-19 19:09:57,373 INFO L226 Difference]: Without dead ends: 2152
[2021-02-19 19:09:57,374 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870
[2021-02-19 19:09:57,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states.
[2021-02-19 19:09:57,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 957.
[2021-02-19 19:09:57,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 3.3629707112970713) internal successors, (3215), 956 states have internal predecessors, (3215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:57,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3215 transitions.
[2021-02-19 19:09:57,397 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 3215 transitions. Word has length 24
[2021-02-19 19:09:57,398 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:57,398 INFO L480 AbstractCegarLoop]: Abstraction has 957 states and 3215 transitions.
[2021-02-19 19:09:57,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:57,398 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 3215 transitions.
[2021-02-19 19:09:57,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-02-19 19:09:57,400 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:57,400 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:57,620 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79
[2021-02-19 19:09:57,621 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:57,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:57,621 INFO L82 PathProgramCache]: Analyzing trace with hash 556115509, now seen corresponding path program 30 times
[2021-02-19 19:09:57,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:57,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468954147]
[2021-02-19 19:09:57,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:57,652 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:57,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468954147]
[2021-02-19 19:09:57,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446699206]
[2021-02-19 19:09:57,652 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:57,677 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2021-02-19 19:09:57,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:09:57,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-02-19 19:09:57,678 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:09:57,746 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:57,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:09:57,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11
[2021-02-19 19:09:57,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420533434]
[2021-02-19 19:09:57,747 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states
[2021-02-19 19:09:57,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:57,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2021-02-19 19:09:57,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110
[2021-02-19 19:09:57,747 INFO L87 Difference]: Start difference. First operand 957 states and 3215 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:58,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:58,053 INFO L93 Difference]: Finished difference Result 2097 states and 6377 transitions.
[2021-02-19 19:09:58,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states.
[2021-02-19 19:09:58,053 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-02-19 19:09:58,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:58,056 INFO L225 Difference]: With dead ends: 2097
[2021-02-19 19:09:58,056 INFO L226 Difference]: Without dead ends: 2097
[2021-02-19 19:09:58,056 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056
[2021-02-19 19:09:58,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2097 states.
[2021-02-19 19:09:58,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2097 to 1047.
[2021-02-19 19:09:58,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 3.378585086042065) internal successors, (3534), 1046 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:58,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 3534 transitions.
[2021-02-19 19:09:58,078 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 3534 transitions. Word has length 24
[2021-02-19 19:09:58,079 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:58,079 INFO L480 AbstractCegarLoop]: Abstraction has 1047 states and 3534 transitions.
[2021-02-19 19:09:58,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:58,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 3534 transitions.
[2021-02-19 19:09:58,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-02-19 19:09:58,081 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:58,081 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:58,299 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:58,300 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:58,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:58,300 INFO L82 PathProgramCache]: Analyzing trace with hash 637491597, now seen corresponding path program 31 times
[2021-02-19 19:09:58,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:58,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809385206]
[2021-02-19 19:09:58,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:58,331 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:58,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809385206]
[2021-02-19 19:09:58,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407134839]
[2021-02-19 19:09:58,333 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:58,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-02-19 19:09:58,372 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:09:58,421 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:58,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:09:58,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11
[2021-02-19 19:09:58,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985426925]
[2021-02-19 19:09:58,426 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states
[2021-02-19 19:09:58,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:58,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2021-02-19 19:09:58,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110
[2021-02-19 19:09:58,427 INFO L87 Difference]: Start difference. First operand 1047 states and 3534 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:58,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:58,691 INFO L93 Difference]: Finished difference Result 1963 states and 6051 transitions.
[2021-02-19 19:09:58,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2021-02-19 19:09:58,691 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-02-19 19:09:58,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:58,694 INFO L225 Difference]: With dead ends: 1963
[2021-02-19 19:09:58,694 INFO L226 Difference]: Without dead ends: 1959
[2021-02-19 19:09:58,694 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=193, Invalid=563, Unknown=0, NotChecked=0, Total=756
[2021-02-19 19:09:58,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states.
[2021-02-19 19:09:58,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1047.
[2021-02-19 19:09:58,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 3.376673040152964) internal successors, (3532), 1046 states have internal predecessors, (3532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:58,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 3532 transitions.
[2021-02-19 19:09:58,715 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 3532 transitions. Word has length 24
[2021-02-19 19:09:58,715 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:58,715 INFO L480 AbstractCegarLoop]: Abstraction has 1047 states and 3532 transitions.
[2021-02-19 19:09:58,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:58,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 3532 transitions.
[2021-02-19 19:09:58,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-02-19 19:09:58,717 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:58,717 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:58,937 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,35 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:58,937 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:58,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:58,938 INFO L82 PathProgramCache]: Analyzing trace with hash -877600375, now seen corresponding path program 32 times
[2021-02-19 19:09:58,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:58,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489968985]
[2021-02-19 19:09:58,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:58,968 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:58,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489968985]
[2021-02-19 19:09:58,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632047779]
[2021-02-19 19:09:58,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:58,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-02-19 19:09:58,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:09:58,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-02-19 19:09:58,988 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:09:59,035 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:59,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:09:59,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11
[2021-02-19 19:09:59,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266818965]
[2021-02-19 19:09:59,036 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states
[2021-02-19 19:09:59,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:59,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2021-02-19 19:09:59,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110
[2021-02-19 19:09:59,036 INFO L87 Difference]: Start difference. First operand 1047 states and 3532 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:59,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:59,248 INFO L93 Difference]: Finished difference Result 1728 states and 5494 transitions.
[2021-02-19 19:09:59,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2021-02-19 19:09:59,249 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-02-19 19:09:59,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:59,251 INFO L225 Difference]: With dead ends: 1728
[2021-02-19 19:09:59,251 INFO L226 Difference]: Without dead ends: 1716
[2021-02-19 19:09:59,251 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506
[2021-02-19 19:09:59,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states.
[2021-02-19 19:09:59,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1047.
[2021-02-19 19:09:59,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 3.372848948374761) internal successors, (3528), 1046 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:59,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 3528 transitions.
[2021-02-19 19:09:59,266 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 3528 transitions. Word has length 24
[2021-02-19 19:09:59,266 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:59,266 INFO L480 AbstractCegarLoop]: Abstraction has 1047 states and 3528 transitions.
[2021-02-19 19:09:59,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:59,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 3528 transitions.
[2021-02-19 19:09:59,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-02-19 19:09:59,268 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:59,268 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:09:59,468 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:59,469 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:09:59,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:09:59,469 INFO L82 PathProgramCache]: Analyzing trace with hash 719526341, now seen corresponding path program 33 times
[2021-02-19 19:09:59,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:09:59,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636982306]
[2021-02-19 19:09:59,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:09:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:09:59,501 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:59,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636982306]
[2021-02-19 19:09:59,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768156787]
[2021-02-19 19:09:59,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:09:59,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2021-02-19 19:09:59,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:09:59,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-02-19 19:09:59,519 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:09:59,586 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:09:59,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:09:59,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13
[2021-02-19 19:09:59,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153757787]
[2021-02-19 19:09:59,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states
[2021-02-19 19:09:59,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:09:59,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-02-19 19:09:59,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156
[2021-02-19 19:09:59,587 INFO L87 Difference]: Start difference. First operand 1047 states and 3528 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:59,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:09:59,913 INFO L93 Difference]: Finished difference Result 1821 states and 5719 transitions.
[2021-02-19 19:09:59,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2021-02-19 19:09:59,914 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-02-19 19:09:59,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:09:59,916 INFO L225 Difference]: With dead ends: 1821
[2021-02-19 19:09:59,916 INFO L226 Difference]: Without dead ends: 1821
[2021-02-19 19:09:59,916 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870
[2021-02-19 19:09:59,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states.
[2021-02-19 19:09:59,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1119.
[2021-02-19 19:09:59,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 3.370304114490161) internal successors, (3768), 1118 states have internal predecessors, (3768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:59,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 3768 transitions.
[2021-02-19 19:09:59,938 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 3768 transitions. Word has length 24
[2021-02-19 19:09:59,938 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:09:59,939 INFO L480 AbstractCegarLoop]: Abstraction has 1119 states and 3768 transitions.
[2021-02-19 19:09:59,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:09:59,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 3768 transitions.
[2021-02-19 19:09:59,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-02-19 19:09:59,941 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:09:59,941 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:10:00,161 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,37 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:10:00,162 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:10:00,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:10:00,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1932401801, now seen corresponding path program 34 times
[2021-02-19 19:10:00,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:10:00,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211400922]
[2021-02-19 19:10:00,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:10:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:10:00,196 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:10:00,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211400922]
[2021-02-19 19:10:00,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141466275]
[2021-02-19 19:10:00,196 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:10:00,213 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-02-19 19:10:00,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:10:00,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-02-19 19:10:00,214 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:10:00,279 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:10:00,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:10:00,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13
[2021-02-19 19:10:00,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917272683]
[2021-02-19 19:10:00,280 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states
[2021-02-19 19:10:00,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:10:00,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-02-19 19:10:00,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156
[2021-02-19 19:10:00,280 INFO L87 Difference]: Start difference. First operand 1119 states and 3768 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:00,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:10:00,551 INFO L93 Difference]: Finished difference Result 1790 states and 5648 transitions.
[2021-02-19 19:10:00,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2021-02-19 19:10:00,551 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-02-19 19:10:00,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:10:00,553 INFO L225 Difference]: With dead ends: 1790
[2021-02-19 19:10:00,553 INFO L226 Difference]: Without dead ends: 1786
[2021-02-19 19:10:00,554 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650
[2021-02-19 19:10:00,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states.
[2021-02-19 19:10:00,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1119.
[2021-02-19 19:10:00,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 3.368515205724508) internal successors, (3766), 1118 states have internal predecessors, (3766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:00,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 3766 transitions.
[2021-02-19 19:10:00,571 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 3766 transitions. Word has length 24
[2021-02-19 19:10:00,571 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:10:00,571 INFO L480 AbstractCegarLoop]: Abstraction has 1119 states and 3766 transitions.
[2021-02-19 19:10:00,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:00,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 3766 transitions.
[2021-02-19 19:10:00,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-02-19 19:10:00,573 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:10:00,573 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:10:00,780 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84
[2021-02-19 19:10:00,780 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:10:00,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:10:00,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1095108317, now seen corresponding path program 35 times
[2021-02-19 19:10:00,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:10:00,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646475223]
[2021-02-19 19:10:00,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:10:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:10:00,815 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:10:00,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646475223]
[2021-02-19 19:10:00,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771583056]
[2021-02-19 19:10:00,815 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:10:00,832 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2021-02-19 19:10:00,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:10:00,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-02-19 19:10:00,833 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:10:00,911 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:10:00,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:10:00,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12
[2021-02-19 19:10:00,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209595845]
[2021-02-19 19:10:00,911 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states
[2021-02-19 19:10:00,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:10:00,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2021-02-19 19:10:00,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132
[2021-02-19 19:10:00,912 INFO L87 Difference]: Start difference. First operand 1119 states and 3766 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:01,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:10:01,076 INFO L93 Difference]: Finished difference Result 1649 states and 5332 transitions.
[2021-02-19 19:10:01,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2021-02-19 19:10:01,076 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-02-19 19:10:01,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:10:01,078 INFO L225 Difference]: With dead ends: 1649
[2021-02-19 19:10:01,078 INFO L226 Difference]: Without dead ends: 1637
[2021-02-19 19:10:01,079 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342
[2021-02-19 19:10:01,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states.
[2021-02-19 19:10:01,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1119.
[2021-02-19 19:10:01,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 3.3649373881932023) internal successors, (3762), 1118 states have internal predecessors, (3762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:01,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 3762 transitions.
[2021-02-19 19:10:01,097 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 3762 transitions. Word has length 24
[2021-02-19 19:10:01,097 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:10:01,097 INFO L480 AbstractCegarLoop]: Abstraction has 1119 states and 3762 transitions.
[2021-02-19 19:10:01,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:01,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 3762 transitions.
[2021-02-19 19:10:01,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:10:01,099 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:10:01,099 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:10:01,320 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:10:01,320 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:10:01,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:10:01,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1918687339, now seen corresponding path program 4 times
[2021-02-19 19:10:01,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:10:01,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737677749]
[2021-02-19 19:10:01,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:10:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:10:01,858 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:10:01,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737677749]
[2021-02-19 19:10:01,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482150846]
[2021-02-19 19:10:01,858 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:10:01,879 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-02-19 19:10:01,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:10:01,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-02-19 19:10:01,880 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:10:02,570 WARN L202 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53
[2021-02-19 19:10:02,756 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:02,756 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:02,762 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:02,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-02-19 19:10:02,764 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:02,769 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:02,770 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:02,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13
[2021-02-19 19:10:02,774 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:02,928 WARN L202 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51
[2021-02-19 19:10:02,929 INFO L628 ElimStorePlain]: treesize reduction 93, result has 59.6 percent of original size
[2021-02-19 19:10:02,934 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:02,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-02-19 19:10:02,938 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:02,942 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:02,943 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:02,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:10:02,946 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:03,000 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:10:03,004 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:03,004 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:03,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:10:03,006 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:03,048 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:10:03,048 INFO L518 ElimStorePlain]: Eliminatee v_prenex_12 vanished before elimination
[2021-02-19 19:10:03,051 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 4 dim-1 vars, End of recursive call: and 5 xjuncts.
[2021-02-19 19:10:03,051 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 12 variables, input treesize:285, output treesize:51
[2021-02-19 19:10:03,118 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:10:03,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:10:03,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18
[2021-02-19 19:10:03,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64852536]
[2021-02-19 19:10:03,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states
[2021-02-19 19:10:03,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:10:03,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-02-19 19:10:03,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306
[2021-02-19 19:10:03,119 INFO L87 Difference]: Start difference. First operand 1119 states and 3762 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:03,459 WARN L202 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42
[2021-02-19 19:10:03,917 WARN L202 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65
[2021-02-19 19:10:04,137 WARN L202 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62
[2021-02-19 19:10:04,523 WARN L202 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 75
[2021-02-19 19:10:04,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:10:04,739 INFO L93 Difference]: Finished difference Result 1517 states and 4955 transitions.
[2021-02-19 19:10:04,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2021-02-19 19:10:04,740 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:10:04,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:10:04,742 INFO L225 Difference]: With dead ends: 1517
[2021-02-19 19:10:04,742 INFO L226 Difference]: Without dead ends: 1502
[2021-02-19 19:10:04,742 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=174, Invalid=638, Unknown=0, NotChecked=0, Total=812
[2021-02-19 19:10:04,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states.
[2021-02-19 19:10:04,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1141.
[2021-02-19 19:10:04,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 1140 states have (on average 3.362280701754386) internal successors, (3833), 1140 states have internal predecessors, (3833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:04,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 3833 transitions.
[2021-02-19 19:10:04,757 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 3833 transitions. Word has length 26
[2021-02-19 19:10:04,757 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:10:04,757 INFO L480 AbstractCegarLoop]: Abstraction has 1141 states and 3833 transitions.
[2021-02-19 19:10:04,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:04,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 3833 transitions.
[2021-02-19 19:10:04,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:10:04,759 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:10:04,759 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:10:04,969 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:10:04,969 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:10:04,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:10:04,969 INFO L82 PathProgramCache]: Analyzing trace with hash -109710677, now seen corresponding path program 5 times
[2021-02-19 19:10:04,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:10:04,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004199120]
[2021-02-19 19:10:04,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:10:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:10:05,482 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:10:05,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004199120]
[2021-02-19 19:10:05,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316321691]
[2021-02-19 19:10:05,482 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:10:05,522 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2021-02-19 19:10:05,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:10:05,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-02-19 19:10:05,524 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:10:06,001 WARN L202 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36
[2021-02-19 19:10:06,056 INFO L446 ElimStorePlain]: Different costs {1=[A], 2=[v_prenex_14, v_prenex_16]}
[2021-02-19 19:10:06,060 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:06,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-02-19 19:10:06,062 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:06,180 WARN L202 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45
[2021-02-19 19:10:06,180 INFO L628 ElimStorePlain]: treesize reduction 54, result has 69.8 percent of original size
[2021-02-19 19:10:06,184 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:06,185 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:06,186 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:06,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-02-19 19:10:06,190 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:06,193 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:06,193 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:06,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:10:06,196 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:06,234 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:10:06,237 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:06,238 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:06,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:10:06,244 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:06,278 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:10:06,295 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 5 xjuncts.
[2021-02-19 19:10:06,295 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:193, output treesize:51
[2021-02-19 19:10:06,362 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:10:06,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:10:06,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18
[2021-02-19 19:10:06,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082969444]
[2021-02-19 19:10:06,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states
[2021-02-19 19:10:06,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:10:06,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-02-19 19:10:06,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306
[2021-02-19 19:10:06,364 INFO L87 Difference]: Start difference. First operand 1141 states and 3833 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:07,026 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 42
[2021-02-19 19:10:07,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:10:07,375 INFO L93 Difference]: Finished difference Result 1495 states and 4899 transitions.
[2021-02-19 19:10:07,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2021-02-19 19:10:07,376 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:10:07,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:10:07,378 INFO L225 Difference]: With dead ends: 1495
[2021-02-19 19:10:07,378 INFO L226 Difference]: Without dead ends: 1480
[2021-02-19 19:10:07,378 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702
[2021-02-19 19:10:07,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states.
[2021-02-19 19:10:07,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1150.
[2021-02-19 19:10:07,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1149 states have (on average 3.3568320278503045) internal successors, (3857), 1149 states have internal predecessors, (3857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:07,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 3857 transitions.
[2021-02-19 19:10:07,396 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 3857 transitions. Word has length 26
[2021-02-19 19:10:07,396 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:10:07,396 INFO L480 AbstractCegarLoop]: Abstraction has 1150 states and 3857 transitions.
[2021-02-19 19:10:07,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:07,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 3857 transitions.
[2021-02-19 19:10:07,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:10:07,398 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:10:07,399 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:10:07,619 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:10:07,619 INFO L428 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:10:07,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:10:07,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1481718631, now seen corresponding path program 36 times
[2021-02-19 19:10:07,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:10:07,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825460092]
[2021-02-19 19:10:07,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:10:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:10:08,132 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:10:08,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825460092]
[2021-02-19 19:10:08,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089962418]
[2021-02-19 19:10:08,133 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:10:08,153 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2021-02-19 19:10:08,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:10:08,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-02-19 19:10:08,154 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:10:08,819 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:08,820 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,821 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:08,821 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,823 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,824 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16
[2021-02-19 19:10:08,826 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:08,830 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:08,831 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:08,832 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,832 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,835 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,835 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19
[2021-02-19 19:10:08,837 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:08,841 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:08,846 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,847 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:08,847 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,849 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,850 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19
[2021-02-19 19:10:08,851 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:08,856 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:08,856 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,857 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:08,858 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,859 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,861 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16
[2021-02-19 19:10:08,862 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:08,866 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:08,867 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,868 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:08,868 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,870 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,871 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13
[2021-02-19 19:10:08,873 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:08,878 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:08,879 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,880 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:08,880 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,882 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,883 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19
[2021-02-19 19:10:08,884 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:08,888 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:08,889 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,890 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:08,890 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,892 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,893 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13
[2021-02-19 19:10:08,896 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:08,900 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:08,901 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:08,901 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,902 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,906 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,906 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16
[2021-02-19 19:10:08,908 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:08,913 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:08,913 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,914 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:08,915 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,917 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,918 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13
[2021-02-19 19:10:08,920 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:08,925 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:08,925 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,926 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:08,927 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,930 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,931 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19
[2021-02-19 19:10:08,933 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:08,938 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:08,939 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,940 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:08,940 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,942 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,943 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16
[2021-02-19 19:10:08,945 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:08,951 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:08,952 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:08,952 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,953 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,956 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,957 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16
[2021-02-19 19:10:08,958 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:08,962 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:08,963 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:08,964 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,964 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,967 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,967 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13
[2021-02-19 19:10:08,969 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:08,973 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:08,973 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,974 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:08,975 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,976 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,978 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13
[2021-02-19 19:10:08,981 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:08,984 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:08,984 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,985 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:08,986 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:08,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16
[2021-02-19 19:10:08,987 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:09,020 INFO L628 ElimStorePlain]: treesize reduction 34, result has 44.3 percent of original size
[2021-02-19 19:10:09,022 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts.
[2021-02-19 19:10:09,022 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21
[2021-02-19 19:10:09,064 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:10:09,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:10:09,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17
[2021-02-19 19:10:09,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879598792]
[2021-02-19 19:10:09,065 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states
[2021-02-19 19:10:09,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:10:09,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-02-19 19:10:09,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306
[2021-02-19 19:10:09,066 INFO L87 Difference]: Start difference. First operand 1150 states and 3857 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:10,503 WARN L202 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48
[2021-02-19 19:10:10,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:10:10,576 INFO L93 Difference]: Finished difference Result 1607 states and 5192 transitions.
[2021-02-19 19:10:10,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2021-02-19 19:10:10,577 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:10:10,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:10:10,579 INFO L225 Difference]: With dead ends: 1607
[2021-02-19 19:10:10,579 INFO L226 Difference]: Without dead ends: 1592
[2021-02-19 19:10:10,580 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=211, Invalid=979, Unknown=0, NotChecked=0, Total=1190
[2021-02-19 19:10:10,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states.
[2021-02-19 19:10:10,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1180.
[2021-02-19 19:10:10,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 1179 states have (on average 3.340966921119593) internal successors, (3939), 1179 states have internal predecessors, (3939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:10,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 3939 transitions.
[2021-02-19 19:10:10,597 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 3939 transitions. Word has length 26
[2021-02-19 19:10:10,598 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:10:10,598 INFO L480 AbstractCegarLoop]: Abstraction has 1180 states and 3939 transitions.
[2021-02-19 19:10:10,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:10,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 3939 transitions.
[2021-02-19 19:10:10,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:10:10,600 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:10:10,600 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:10:10,821 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116
[2021-02-19 19:10:10,821 INFO L428 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:10:10,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:10:10,822 INFO L82 PathProgramCache]: Analyzing trace with hash -2008201489, now seen corresponding path program 6 times
[2021-02-19 19:10:10,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:10:10,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942398883]
[2021-02-19 19:10:10,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:10:10,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:10:11,066 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45
[2021-02-19 19:10:11,393 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:10:11,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942398883]
[2021-02-19 19:10:11,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335583241]
[2021-02-19 19:10:11,393 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:10:11,414 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2021-02-19 19:10:11,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:10:11,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-02-19 19:10:11,415 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:10:11,698 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:11,707 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:10:11,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18
[2021-02-19 19:10:11,711 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:11,715 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:11,721 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:10:11,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19
[2021-02-19 19:10:11,722 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:11,727 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:11,732 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:10:11,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16
[2021-02-19 19:10:11,733 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:11,738 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:11,746 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:10:11,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20
[2021-02-19 19:10:11,747 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:11,752 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:11,760 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:10:11,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-02-19 19:10:11,761 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:11,765 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:11,772 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:10:11,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24
[2021-02-19 19:10:11,777 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:11,780 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:11,786 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:10:11,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19
[2021-02-19 19:10:11,787 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:11,791 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:11,801 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:10:11,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24
[2021-02-19 19:10:11,803 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:11,807 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:11,813 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:10:11,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19
[2021-02-19 19:10:11,814 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:11,819 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:11,825 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:10:11,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:10:11,826 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:11,830 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:11,838 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:10:11,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-02-19 19:10:11,841 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:11,844 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:11,849 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:10:11,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19
[2021-02-19 19:10:11,850 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:11,854 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:11,859 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:10:11,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 22
[2021-02-19 19:10:11,860 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:11,863 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:11,871 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:10:11,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-02-19 19:10:11,872 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:11,876 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:11,882 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:10:11,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-02-19 19:10:11,883 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:11,886 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:11,889 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:10:11,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:10:11,890 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:11,959 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:10:11,961 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-02-19 19:10:11,961 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:609, output treesize:165
[2021-02-19 19:10:12,176 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:10:12,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:10:12,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19
[2021-02-19 19:10:12,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369026304]
[2021-02-19 19:10:12,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-02-19 19:10:12,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:10:12,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-02-19 19:10:12,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342
[2021-02-19 19:10:12,177 INFO L87 Difference]: Start difference. First operand 1180 states and 3939 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:13,059 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53
[2021-02-19 19:10:13,217 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 50
[2021-02-19 19:10:13,751 WARN L202 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68
[2021-02-19 19:10:13,970 WARN L202 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 61
[2021-02-19 19:10:14,277 WARN L202 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65
[2021-02-19 19:10:14,438 WARN L202 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68
[2021-02-19 19:10:14,775 WARN L202 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 30
[2021-02-19 19:10:15,062 WARN L202 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 48
[2021-02-19 19:10:15,412 WARN L202 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 42
[2021-02-19 19:10:15,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:10:15,521 INFO L93 Difference]: Finished difference Result 1843 states and 5867 transitions.
[2021-02-19 19:10:15,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2021-02-19 19:10:15,522 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:10:15,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:10:15,525 INFO L225 Difference]: With dead ends: 1843
[2021-02-19 19:10:15,525 INFO L226 Difference]: Without dead ends: 1828
[2021-02-19 19:10:15,525 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=290, Invalid=1602, Unknown=0, NotChecked=0, Total=1892
[2021-02-19 19:10:15,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states.
[2021-02-19 19:10:15,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1198.
[2021-02-19 19:10:15,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1198 states, 1197 states have (on average 3.346700083542189) internal successors, (4006), 1197 states have internal predecessors, (4006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:15,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 4006 transitions.
[2021-02-19 19:10:15,542 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 4006 transitions. Word has length 26
[2021-02-19 19:10:15,542 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:10:15,542 INFO L480 AbstractCegarLoop]: Abstraction has 1198 states and 4006 transitions.
[2021-02-19 19:10:15,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:15,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 4006 transitions.
[2021-02-19 19:10:15,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:10:15,544 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:10:15,544 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:10:15,745 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable224
[2021-02-19 19:10:15,745 INFO L428 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:10:15,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:10:15,745 INFO L82 PathProgramCache]: Analyzing trace with hash -457819925, now seen corresponding path program 37 times
[2021-02-19 19:10:15,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:10:15,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069376909]
[2021-02-19 19:10:15,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:10:15,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:10:16,106 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45
[2021-02-19 19:10:16,269 WARN L202 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58
[2021-02-19 19:10:16,504 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:10:16,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069376909]
[2021-02-19 19:10:16,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72193655]
[2021-02-19 19:10:16,505 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:10:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:10:16,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-02-19 19:10:16,527 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:10:17,191 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,192 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:17,193 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:17,193 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,194 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,196 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16
[2021-02-19 19:10:17,197 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:17,202 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,203 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:17,204 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:17,204 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,205 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,207 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16
[2021-02-19 19:10:17,209 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:17,214 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,215 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:17,216 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:17,216 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,217 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,219 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 19
[2021-02-19 19:10:17,221 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:17,225 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,226 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:17,227 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:17,227 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,228 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,230 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 16
[2021-02-19 19:10:17,231 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:17,236 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,236 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:17,237 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:17,238 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,238 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,241 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16
[2021-02-19 19:10:17,242 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:17,247 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,248 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:17,249 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:17,249 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,250 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,252 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 7
[2021-02-19 19:10:17,255 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:17,260 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,261 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:17,262 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:17,262 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,263 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,265 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 13
[2021-02-19 19:10:17,267 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:17,271 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,272 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:17,273 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:17,273 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,274 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,276 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16
[2021-02-19 19:10:17,278 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:17,282 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,283 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:17,284 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:17,286 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,286 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,288 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 19
[2021-02-19 19:10:17,290 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:17,295 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,296 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:17,297 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:17,297 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,298 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,300 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 13
[2021-02-19 19:10:17,302 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:17,306 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,307 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:17,308 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:17,309 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,309 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,311 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 16
[2021-02-19 19:10:17,313 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:17,317 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,318 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:17,319 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:17,320 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,320 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,323 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 19
[2021-02-19 19:10:17,324 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:17,328 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,329 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:17,330 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:17,330 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,331 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,333 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19
[2021-02-19 19:10:17,335 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:17,339 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,342 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:17,344 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:17,345 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,345 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,347 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 13
[2021-02-19 19:10:17,349 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:17,353 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,354 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:17,355 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:17,356 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,356 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,359 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 13
[2021-02-19 19:10:17,361 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:17,364 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,365 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:17,366 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:17,366 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:17,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13
[2021-02-19 19:10:17,368 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:17,409 INFO L628 ElimStorePlain]: treesize reduction 34, result has 49.3 percent of original size
[2021-02-19 19:10:17,416 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts.
[2021-02-19 19:10:17,416 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:809, output treesize:21
[2021-02-19 19:10:17,459 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:10:17,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:10:17,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17
[2021-02-19 19:10:17,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99321916]
[2021-02-19 19:10:17,460 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states
[2021-02-19 19:10:17,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:10:17,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-02-19 19:10:17,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306
[2021-02-19 19:10:17,461 INFO L87 Difference]: Start difference. First operand 1198 states and 4006 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:18,612 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 48
[2021-02-19 19:10:18,962 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 55
[2021-02-19 19:10:19,150 WARN L202 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 58
[2021-02-19 19:10:19,534 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 52
[2021-02-19 19:10:19,719 WARN L202 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 58
[2021-02-19 19:10:19,979 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57
[2021-02-19 19:10:20,137 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 55
[2021-02-19 19:10:20,642 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65
[2021-02-19 19:10:20,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:10:20,948 INFO L93 Difference]: Finished difference Result 1877 states and 5988 transitions.
[2021-02-19 19:10:20,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states.
[2021-02-19 19:10:20,948 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:10:20,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:10:20,951 INFO L225 Difference]: With dead ends: 1877
[2021-02-19 19:10:20,951 INFO L226 Difference]: Without dead ends: 1862
[2021-02-19 19:10:20,951 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=433, Invalid=1919, Unknown=0, NotChecked=0, Total=2352
[2021-02-19 19:10:20,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1862 states.
[2021-02-19 19:10:20,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 1206.
[2021-02-19 19:10:20,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 1205 states have (on average 3.349377593360996) internal successors, (4036), 1205 states have internal predecessors, (4036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:20,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 4036 transitions.
[2021-02-19 19:10:20,967 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 4036 transitions. Word has length 26
[2021-02-19 19:10:20,967 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:10:20,967 INFO L480 AbstractCegarLoop]: Abstraction has 1206 states and 4036 transitions.
[2021-02-19 19:10:20,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:20,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 4036 transitions.
[2021-02-19 19:10:20,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:10:20,969 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:10:20,969 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:10:21,169 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:10:21,170 INFO L428 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:10:21,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:10:21,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1434138769, now seen corresponding path program 38 times
[2021-02-19 19:10:21,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:10:21,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927102852]
[2021-02-19 19:10:21,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:10:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:10:21,373 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 28
[2021-02-19 19:10:21,610 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56
[2021-02-19 19:10:21,737 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51
[2021-02-19 19:10:21,875 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 34
[2021-02-19 19:10:22,043 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:10:22,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927102852]
[2021-02-19 19:10:22,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741447638]
[2021-02-19 19:10:22,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:10:22,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-02-19 19:10:22,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:10:22,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-02-19 19:10:22,065 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:10:22,785 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:22,786 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:22,787 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:22,814 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size
[2021-02-19 19:10:22,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 33
[2021-02-19 19:10:22,817 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:22,826 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:22,827 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:22,828 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:22,859 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size
[2021-02-19 19:10:22,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 33
[2021-02-19 19:10:22,863 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:22,871 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:22,872 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:22,873 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:22,918 INFO L354 Elim1Store]: treesize reduction 11, result has 62.1 percent of original size
[2021-02-19 19:10:22,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 36
[2021-02-19 19:10:22,923 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:22,931 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:22,932 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:22,933 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:22,959 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:10:22,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 41
[2021-02-19 19:10:22,970 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:22,978 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:22,979 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:22,979 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:23,010 INFO L354 Elim1Store]: treesize reduction 19, result has 34.5 percent of original size
[2021-02-19 19:10:23,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 28
[2021-02-19 19:10:23,012 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:23,020 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:23,021 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:23,022 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:23,049 INFO L354 Elim1Store]: treesize reduction 19, result has 34.5 percent of original size
[2021-02-19 19:10:23,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 28
[2021-02-19 19:10:23,051 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:23,059 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:23,060 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:23,060 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:23,075 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size
[2021-02-19 19:10:23,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 1
[2021-02-19 19:10:23,077 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:23,084 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:23,085 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:23,086 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:23,103 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size
[2021-02-19 19:10:23,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 1
[2021-02-19 19:10:23,104 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:23,111 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:23,112 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:23,114 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:23,140 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size
[2021-02-19 19:10:23,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 30
[2021-02-19 19:10:23,146 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:23,155 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:23,156 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:23,157 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:23,183 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size
[2021-02-19 19:10:23,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 26
[2021-02-19 19:10:23,185 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:23,193 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:23,194 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:23,195 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:23,209 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size
[2021-02-19 19:10:23,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1
[2021-02-19 19:10:23,210 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:23,218 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:23,219 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:23,220 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:23,247 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size
[2021-02-19 19:10:23,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 30
[2021-02-19 19:10:23,253 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:23,260 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:23,260 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:23,261 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:23,273 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size
[2021-02-19 19:10:23,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 1
[2021-02-19 19:10:23,274 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:23,280 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:23,281 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:23,282 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:23,292 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size
[2021-02-19 19:10:23,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 1
[2021-02-19 19:10:23,293 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:23,300 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:23,301 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:23,302 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:23,314 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size
[2021-02-19 19:10:23,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 1
[2021-02-19 19:10:23,315 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:23,321 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:23,322 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:23,323 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:23,328 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size
[2021-02-19 19:10:23,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1
[2021-02-19 19:10:23,329 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:23,480 WARN L202 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 30
[2021-02-19 19:10:23,480 INFO L628 ElimStorePlain]: treesize reduction 175, result has 47.6 percent of original size
[2021-02-19 19:10:23,483 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts.
[2021-02-19 19:10:23,483 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:953, output treesize:180
[2021-02-19 19:10:23,663 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:10:23,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:10:23,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22
[2021-02-19 19:10:23,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628634780]
[2021-02-19 19:10:23,664 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states
[2021-02-19 19:10:23,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:10:23,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2021-02-19 19:10:23,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462
[2021-02-19 19:10:23,664 INFO L87 Difference]: Start difference. First operand 1206 states and 4036 transitions. Second operand has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:24,485 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 48
[2021-02-19 19:10:24,657 WARN L202 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61
[2021-02-19 19:10:24,798 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 42
[2021-02-19 19:10:25,813 WARN L202 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 47
[2021-02-19 19:10:25,970 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 45
[2021-02-19 19:10:26,331 WARN L202 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55
[2021-02-19 19:10:26,825 WARN L202 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 56
[2021-02-19 19:10:26,975 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61
[2021-02-19 19:10:27,158 WARN L202 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70
[2021-02-19 19:10:27,470 WARN L202 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69
[2021-02-19 19:10:27,871 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 74
[2021-02-19 19:10:28,095 WARN L202 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 42
[2021-02-19 19:10:28,420 WARN L202 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 74
[2021-02-19 19:10:28,673 WARN L202 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71
[2021-02-19 19:10:28,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:10:28,928 INFO L93 Difference]: Finished difference Result 2421 states and 7568 transitions.
[2021-02-19 19:10:28,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states.
[2021-02-19 19:10:28,929 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:10:28,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:10:28,932 INFO L225 Difference]: With dead ends: 2421
[2021-02-19 19:10:28,932 INFO L226 Difference]: Without dead ends: 2376
[2021-02-19 19:10:28,933 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 987 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=528, Invalid=3132, Unknown=0, NotChecked=0, Total=3660
[2021-02-19 19:10:28,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states.
[2021-02-19 19:10:28,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 1349.
[2021-02-19 19:10:28,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 1348 states have (on average 3.306379821958457) internal successors, (4457), 1348 states have internal predecessors, (4457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:28,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 4457 transitions.
[2021-02-19 19:10:28,951 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 4457 transitions. Word has length 26
[2021-02-19 19:10:28,951 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:10:28,951 INFO L480 AbstractCegarLoop]: Abstraction has 1349 states and 4457 transitions.
[2021-02-19 19:10:28,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:28,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 4457 transitions.
[2021-02-19 19:10:28,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:10:28,953 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:10:28,953 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:10:29,153 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable339
[2021-02-19 19:10:29,153 INFO L428 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:10:29,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:10:29,154 INFO L82 PathProgramCache]: Analyzing trace with hash 775761299, now seen corresponding path program 7 times
[2021-02-19 19:10:29,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:10:29,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442066165]
[2021-02-19 19:10:29,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:10:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:10:29,621 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:10:29,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442066165]
[2021-02-19 19:10:29,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473916634]
[2021-02-19 19:10:29,622 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:10:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:10:29,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-02-19 19:10:29,641 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:10:30,365 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:30,367 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:30,367 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:30,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-02-19 19:10:30,370 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:30,374 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:30,375 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:30,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13
[2021-02-19 19:10:30,377 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:30,529 WARN L202 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51
[2021-02-19 19:10:30,530 INFO L628 ElimStorePlain]: treesize reduction 93, result has 59.6 percent of original size
[2021-02-19 19:10:30,533 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:30,534 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:30,535 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:30,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:10:30,537 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:30,540 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:30,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-02-19 19:10:30,542 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:30,589 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:10:30,593 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:30,594 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:30,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:10:30,595 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:30,639 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:10:30,639 INFO L518 ElimStorePlain]: Eliminatee v_prenex_23 vanished before elimination
[2021-02-19 19:10:30,642 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 4 dim-1 vars, End of recursive call: and 5 xjuncts.
[2021-02-19 19:10:30,642 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 12 variables, input treesize:285, output treesize:51
[2021-02-19 19:10:30,699 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:10:30,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:10:30,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18
[2021-02-19 19:10:30,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229322676]
[2021-02-19 19:10:30,700 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states
[2021-02-19 19:10:30,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:10:30,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-02-19 19:10:30,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306
[2021-02-19 19:10:30,701 INFO L87 Difference]: Start difference. First operand 1349 states and 4457 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:31,533 WARN L202 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59
[2021-02-19 19:10:31,730 WARN L202 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63
[2021-02-19 19:10:32,017 WARN L202 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 75
[2021-02-19 19:10:32,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:10:32,167 INFO L93 Difference]: Finished difference Result 1759 states and 5691 transitions.
[2021-02-19 19:10:32,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2021-02-19 19:10:32,167 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:10:32,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:10:32,170 INFO L225 Difference]: With dead ends: 1759
[2021-02-19 19:10:32,170 INFO L226 Difference]: Without dead ends: 1744
[2021-02-19 19:10:32,170 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870
[2021-02-19 19:10:32,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states.
[2021-02-19 19:10:32,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1366.
[2021-02-19 19:10:32,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1366 states, 1365 states have (on average 3.3025641025641024) internal successors, (4508), 1365 states have internal predecessors, (4508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:32,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 4508 transitions.
[2021-02-19 19:10:32,189 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 4508 transitions. Word has length 26
[2021-02-19 19:10:32,189 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:10:32,189 INFO L480 AbstractCegarLoop]: Abstraction has 1366 states and 4508 transitions.
[2021-02-19 19:10:32,190 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:32,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 4508 transitions.
[2021-02-19 19:10:32,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:10:32,192 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:10:32,192 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:10:32,406 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable446
[2021-02-19 19:10:32,406 INFO L428 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:10:32,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:10:32,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1252636717, now seen corresponding path program 8 times
[2021-02-19 19:10:32,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:10:32,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839994423]
[2021-02-19 19:10:32,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:10:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:10:32,610 WARN L202 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45
[2021-02-19 19:10:32,930 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:10:32,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839994423]
[2021-02-19 19:10:32,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703872539]
[2021-02-19 19:10:32,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:10:32,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-02-19 19:10:32,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:10:32,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-02-19 19:10:32,951 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:10:33,234 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:33,235 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:33,238 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:33,257 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size
[2021-02-19 19:10:33,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 27
[2021-02-19 19:10:33,262 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:33,270 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:33,274 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:33,278 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size
[2021-02-19 19:10:33,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 16
[2021-02-19 19:10:33,279 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:33,287 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:33,291 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:33,310 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size
[2021-02-19 19:10:33,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 30
[2021-02-19 19:10:33,315 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:33,325 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:33,326 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:33,329 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:33,333 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size
[2021-02-19 19:10:33,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 19
[2021-02-19 19:10:33,334 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:33,342 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:33,343 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:33,347 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:33,351 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size
[2021-02-19 19:10:33,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 16
[2021-02-19 19:10:33,352 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:33,360 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:33,363 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:33,367 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size
[2021-02-19 19:10:33,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 19
[2021-02-19 19:10:33,368 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:33,376 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:33,384 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:33,389 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size
[2021-02-19 19:10:33,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 22
[2021-02-19 19:10:33,390 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:33,398 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:33,402 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:33,405 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size
[2021-02-19 19:10:33,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 19
[2021-02-19 19:10:33,407 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:33,423 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:33,427 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:33,443 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size
[2021-02-19 19:10:33,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 26
[2021-02-19 19:10:33,445 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:33,451 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:33,452 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:33,455 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:33,481 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size
[2021-02-19 19:10:33,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 16
[2021-02-19 19:10:33,482 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:33,488 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:33,491 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:33,501 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:10:33,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 37
[2021-02-19 19:10:33,512 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:33,519 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:33,522 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:33,532 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:10:33,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 37
[2021-02-19 19:10:33,533 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:33,539 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:33,540 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:33,542 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:33,558 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size
[2021-02-19 19:10:33,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 30
[2021-02-19 19:10:33,560 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:33,565 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:33,566 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:33,569 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:33,580 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size
[2021-02-19 19:10:33,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 23
[2021-02-19 19:10:33,582 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:33,587 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:33,588 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:33,590 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:33,599 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:10:33,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 28
[2021-02-19 19:10:33,606 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:33,611 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:33,612 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:33,614 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size
[2021-02-19 19:10:33,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 19
[2021-02-19 19:10:33,615 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:33,714 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:10:33,716 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-02-19 19:10:33,716 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:777, output treesize:249
[2021-02-19 19:10:33,860 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 40
[2021-02-19 19:10:34,072 WARN L202 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 38
[2021-02-19 19:10:34,187 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:10:34,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:10:34,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20
[2021-02-19 19:10:34,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470603390]
[2021-02-19 19:10:34,187 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states
[2021-02-19 19:10:34,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:10:34,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2021-02-19 19:10:34,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380
[2021-02-19 19:10:34,188 INFO L87 Difference]: Start difference. First operand 1366 states and 4508 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:34,779 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54
[2021-02-19 19:10:35,197 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53
[2021-02-19 19:10:35,386 WARN L202 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 53
[2021-02-19 19:10:35,612 WARN L202 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 56
[2021-02-19 19:10:35,750 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52
[2021-02-19 19:10:36,057 WARN L202 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69
[2021-02-19 19:10:36,236 WARN L202 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70
[2021-02-19 19:10:36,510 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 42
[2021-02-19 19:10:36,802 WARN L202 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36
[2021-02-19 19:10:37,109 WARN L202 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53
[2021-02-19 19:10:37,552 WARN L202 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52
[2021-02-19 19:10:37,852 WARN L202 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 38
[2021-02-19 19:10:38,391 WARN L202 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63
[2021-02-19 19:10:38,859 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 49
[2021-02-19 19:10:38,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:10:38,946 INFO L93 Difference]: Finished difference Result 1990 states and 6294 transitions.
[2021-02-19 19:10:38,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states.
[2021-02-19 19:10:38,946 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:10:38,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:10:38,950 INFO L225 Difference]: With dead ends: 1990
[2021-02-19 19:10:38,950 INFO L226 Difference]: Without dead ends: 1975
[2021-02-19 19:10:38,950 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=313, Invalid=1757, Unknown=0, NotChecked=0, Total=2070
[2021-02-19 19:10:38,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states.
[2021-02-19 19:10:38,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1388.
[2021-02-19 19:10:38,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1387 states have (on average 3.308579668348955) internal successors, (4589), 1387 states have internal predecessors, (4589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:38,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 4589 transitions.
[2021-02-19 19:10:38,971 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 4589 transitions. Word has length 26
[2021-02-19 19:10:38,971 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:10:38,971 INFO L480 AbstractCegarLoop]: Abstraction has 1388 states and 4589 transitions.
[2021-02-19 19:10:38,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:38,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 4589 transitions.
[2021-02-19 19:10:38,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:10:38,974 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:10:38,974 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:10:39,174 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable467
[2021-02-19 19:10:39,174 INFO L428 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:10:39,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:10:39,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1104920871, now seen corresponding path program 9 times
[2021-02-19 19:10:39,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:10:39,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458473646]
[2021-02-19 19:10:39,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:10:39,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:10:39,461 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 42
[2021-02-19 19:10:39,605 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 38
[2021-02-19 19:10:39,714 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:10:39,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458473646]
[2021-02-19 19:10:39,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721902738]
[2021-02-19 19:10:39,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-02-19 19:10:39,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2021-02-19 19:10:39,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:10:39,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-02-19 19:10:39,764 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:10:40,314 WARN L202 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61
[2021-02-19 19:10:40,657 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:40,658 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:40,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-02-19 19:10:40,660 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:40,825 WARN L202 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57
[2021-02-19 19:10:40,826 INFO L628 ElimStorePlain]: treesize reduction 98, result has 60.6 percent of original size
[2021-02-19 19:10:40,830 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:40,830 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:40,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:10:40,832 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:40,889 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:10:40,893 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:40,894 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:40,895 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:40,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:10:40,897 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:40,900 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:40,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-02-19 19:10:40,902 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:40,950 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:10:40,953 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:40,954 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:40,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-02-19 19:10:40,970 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:41,025 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:10:41,030 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 4 dim-1 vars, End of recursive call: and 5 xjuncts.
[2021-02-19 19:10:41,030 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 12 variables, input treesize:285, output treesize:51
[2021-02-19 19:10:41,104 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:10:41,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:10:41,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18
[2021-02-19 19:10:41,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263187596]
[2021-02-19 19:10:41,105 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states
[2021-02-19 19:10:41,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:10:41,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-02-19 19:10:41,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306
[2021-02-19 19:10:41,106 INFO L87 Difference]: Start difference. First operand 1388 states and 4589 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:41,496 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 29
[2021-02-19 19:10:41,742 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 44
[2021-02-19 19:10:42,087 WARN L202 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59
[2021-02-19 19:10:42,304 WARN L202 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 64
[2021-02-19 19:10:42,699 WARN L202 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 76
[2021-02-19 19:10:43,047 WARN L202 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77
[2021-02-19 19:10:43,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:10:43,129 INFO L93 Difference]: Finished difference Result 1889 states and 6092 transitions.
[2021-02-19 19:10:43,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2021-02-19 19:10:43,129 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:10:43,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:10:43,132 INFO L225 Difference]: With dead ends: 1889
[2021-02-19 19:10:43,132 INFO L226 Difference]: Without dead ends: 1874
[2021-02-19 19:10:43,133 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=215, Invalid=841, Unknown=0, NotChecked=0, Total=1056
[2021-02-19 19:10:43,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1874 states.
[2021-02-19 19:10:43,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1874 to 1397.
[2021-02-19 19:10:43,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1396 states have (on average 3.3130372492836675) internal successors, (4625), 1396 states have internal predecessors, (4625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:43,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 4625 transitions.
[2021-02-19 19:10:43,151 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 4625 transitions. Word has length 26
[2021-02-19 19:10:43,151 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:10:43,151 INFO L480 AbstractCegarLoop]: Abstraction has 1397 states and 4625 transitions.
[2021-02-19 19:10:43,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:43,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 4625 transitions.
[2021-02-19 19:10:43,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:10:43,153 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:10:43,154 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:10:43,354 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable505,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:10:43,354 INFO L428 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:10:43,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:10:43,355 INFO L82 PathProgramCache]: Analyzing trace with hash 937111779, now seen corresponding path program 10 times
[2021-02-19 19:10:43,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:10:43,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416747950]
[2021-02-19 19:10:43,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:10:43,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:10:43,583 WARN L202 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40
[2021-02-19 19:10:43,700 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40
[2021-02-19 19:10:43,982 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:10:43,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416747950]
[2021-02-19 19:10:43,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835451284]
[2021-02-19 19:10:43,982 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:10:44,003 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-02-19 19:10:44,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:10:44,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-02-19 19:10:44,005 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:10:44,427 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:44,428 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:44,429 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:44,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13
[2021-02-19 19:10:44,432 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:44,437 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:44,437 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:44,439 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:44,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-02-19 19:10:44,440 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:44,446 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:44,446 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:44,448 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:44,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-02-19 19:10:44,451 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:44,456 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:44,456 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:44,457 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:44,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:10:44,459 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:44,463 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:44,464 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:44,466 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:44,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13
[2021-02-19 19:10:44,469 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:44,473 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:44,474 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:44,476 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:44,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-02-19 19:10:44,477 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:44,481 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:44,481 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:44,483 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:44,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19
[2021-02-19 19:10:44,485 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:44,489 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:44,489 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:44,491 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:44,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:10:44,493 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:44,499 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:44,499 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:44,501 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:44,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-02-19 19:10:44,503 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:44,507 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:44,508 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:44,509 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:44,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:10:44,514 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:44,519 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:44,519 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:44,521 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:44,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-02-19 19:10:44,523 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:44,527 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:44,528 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:44,530 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:44,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19
[2021-02-19 19:10:44,533 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:44,537 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:44,538 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:44,539 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:44,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-02-19 19:10:44,541 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:44,544 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:44,544 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:44,546 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:44,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:10:44,548 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:44,551 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:44,551 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:44,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19
[2021-02-19 19:10:44,552 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:44,633 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size
[2021-02-19 19:10:44,635 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts.
[2021-02-19 19:10:44,635 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51
[2021-02-19 19:10:44,700 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:10:44,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:10:44,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16
[2021-02-19 19:10:44,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71861186]
[2021-02-19 19:10:44,701 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states
[2021-02-19 19:10:44,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:10:44,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2021-02-19 19:10:44,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240
[2021-02-19 19:10:44,701 INFO L87 Difference]: Start difference. First operand 1397 states and 4625 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:45,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:10:45,490 INFO L93 Difference]: Finished difference Result 1702 states and 5570 transitions.
[2021-02-19 19:10:45,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2021-02-19 19:10:45,490 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:10:45,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:10:45,493 INFO L225 Difference]: With dead ends: 1702
[2021-02-19 19:10:45,493 INFO L226 Difference]: Without dead ends: 1687
[2021-02-19 19:10:45,493 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462
[2021-02-19 19:10:45,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1687 states.
[2021-02-19 19:10:45,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1687 to 1406.
[2021-02-19 19:10:45,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1406 states, 1405 states have (on average 3.3174377224199287) internal successors, (4661), 1405 states have internal predecessors, (4661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:45,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 4661 transitions.
[2021-02-19 19:10:45,510 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 4661 transitions. Word has length 26
[2021-02-19 19:10:45,510 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:10:45,510 INFO L480 AbstractCegarLoop]: Abstraction has 1406 states and 4661 transitions.
[2021-02-19 19:10:45,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:45,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 4661 transitions.
[2021-02-19 19:10:45,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:10:45,513 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:10:45,513 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:10:45,713 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable526,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:10:45,713 INFO L428 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:10:45,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:10:45,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1130404249, now seen corresponding path program 11 times
[2021-02-19 19:10:45,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:10:45,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335247334]
[2021-02-19 19:10:45,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:10:45,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:10:46,003 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41
[2021-02-19 19:10:46,221 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:10:46,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335247334]
[2021-02-19 19:10:46,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419740816]
[2021-02-19 19:10:46,222 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:10:46,242 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2021-02-19 19:10:46,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:10:46,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-02-19 19:10:46,243 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:10:46,607 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:46,613 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:10:46,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19
[2021-02-19 19:10:46,614 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:46,618 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:46,626 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:10:46,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24
[2021-02-19 19:10:46,631 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:46,634 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:46,640 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:10:46,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 22
[2021-02-19 19:10:46,641 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:46,644 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:46,650 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:10:46,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:10:46,651 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:46,654 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:46,659 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:10:46,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19
[2021-02-19 19:10:46,660 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:46,664 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:46,670 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:10:46,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16
[2021-02-19 19:10:46,671 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:46,674 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:46,683 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:10:46,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24
[2021-02-19 19:10:46,684 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:46,688 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:46,696 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:10:46,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18
[2021-02-19 19:10:46,700 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:46,704 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:46,710 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:10:46,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19
[2021-02-19 19:10:46,711 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:46,714 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:46,723 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:10:46,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-02-19 19:10:46,725 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:46,729 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:46,738 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:10:46,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-02-19 19:10:46,740 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:46,744 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:46,752 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:10:46,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-02-19 19:10:46,756 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:46,760 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:46,769 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:10:46,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20
[2021-02-19 19:10:46,771 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:46,775 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:46,783 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:10:46,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-02-19 19:10:46,784 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:46,790 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:46,795 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:10:46,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19
[2021-02-19 19:10:46,796 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:46,799 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:46,802 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:10:46,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:10:46,803 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:46,890 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:10:46,895 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-02-19 19:10:46,895 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:689, output treesize:174
[2021-02-19 19:10:47,097 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:10:47,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:10:47,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18
[2021-02-19 19:10:47,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699209247]
[2021-02-19 19:10:47,097 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states
[2021-02-19 19:10:47,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:10:47,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-02-19 19:10:47,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306
[2021-02-19 19:10:47,098 INFO L87 Difference]: Start difference. First operand 1406 states and 4661 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:48,740 WARN L202 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46
[2021-02-19 19:10:48,920 WARN L202 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34
[2021-02-19 19:10:49,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:10:49,012 INFO L93 Difference]: Finished difference Result 2063 states and 6662 transitions.
[2021-02-19 19:10:49,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2021-02-19 19:10:49,013 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:10:49,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:10:49,016 INFO L225 Difference]: With dead ends: 2063
[2021-02-19 19:10:49,016 INFO L226 Difference]: Without dead ends: 2048
[2021-02-19 19:10:49,016 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=274, Invalid=1058, Unknown=0, NotChecked=0, Total=1332
[2021-02-19 19:10:49,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2048 states.
[2021-02-19 19:10:49,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2048 to 1406.
[2021-02-19 19:10:49,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1406 states, 1405 states have (on average 3.3174377224199287) internal successors, (4661), 1405 states have internal predecessors, (4661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:49,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 4661 transitions.
[2021-02-19 19:10:49,037 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 4661 transitions. Word has length 26
[2021-02-19 19:10:49,037 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:10:49,037 INFO L480 AbstractCegarLoop]: Abstraction has 1406 states and 4661 transitions.
[2021-02-19 19:10:49,037 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:49,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 4661 transitions.
[2021-02-19 19:10:49,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:10:49,040 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:10:49,040 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:10:49,257 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable558
[2021-02-19 19:10:49,257 INFO L428 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:10:49,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:10:49,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1060173529, now seen corresponding path program 12 times
[2021-02-19 19:10:49,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:10:49,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891617632]
[2021-02-19 19:10:49,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:10:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:10:49,739 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:10:49,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891617632]
[2021-02-19 19:10:49,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349999594]
[2021-02-19 19:10:49,740 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:10:49,760 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2021-02-19 19:10:49,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:10:49,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-02-19 19:10:49,761 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:10:50,010 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:50,017 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:10:50,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16
[2021-02-19 19:10:50,018 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:50,021 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:50,026 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:10:50,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19
[2021-02-19 19:10:50,027 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:50,030 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:50,038 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:10:50,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-02-19 19:10:50,041 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:50,045 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:50,050 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:10:50,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19
[2021-02-19 19:10:50,051 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:50,055 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:50,062 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:10:50,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18
[2021-02-19 19:10:50,066 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:50,070 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:50,078 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:10:50,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-02-19 19:10:50,079 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:50,083 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:50,088 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:10:50,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:10:50,089 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:50,092 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:50,098 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:10:50,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 22
[2021-02-19 19:10:50,098 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:50,102 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:50,109 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:10:50,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24
[2021-02-19 19:10:50,111 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:50,115 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:50,122 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:10:50,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24
[2021-02-19 19:10:50,127 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:50,130 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:50,136 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:10:50,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19
[2021-02-19 19:10:50,137 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:50,140 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:50,145 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:10:50,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:10:50,146 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:50,150 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:50,158 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:10:50,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-02-19 19:10:50,160 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:50,164 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:50,172 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:10:50,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-02-19 19:10:50,174 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:50,177 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:50,186 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:10:50,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20
[2021-02-19 19:10:50,188 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:50,191 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:50,193 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:10:50,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19
[2021-02-19 19:10:50,194 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:50,270 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:10:50,272 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-02-19 19:10:50,272 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:609, output treesize:165
[2021-02-19 19:10:50,500 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:10:50,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:10:50,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19
[2021-02-19 19:10:50,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391417078]
[2021-02-19 19:10:50,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-02-19 19:10:50,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:10:50,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-02-19 19:10:50,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342
[2021-02-19 19:10:50,502 INFO L87 Difference]: Start difference. First operand 1406 states and 4661 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:50,917 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48
[2021-02-19 19:10:51,171 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56
[2021-02-19 19:10:51,298 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45
[2021-02-19 19:10:51,653 WARN L202 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 48
[2021-02-19 19:10:51,802 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55
[2021-02-19 19:10:52,196 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 49
[2021-02-19 19:10:52,423 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53
[2021-02-19 19:10:52,595 WARN L202 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58
[2021-02-19 19:10:52,755 WARN L202 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44
[2021-02-19 19:10:53,058 WARN L202 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29
[2021-02-19 19:10:53,333 WARN L202 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54
[2021-02-19 19:10:53,648 WARN L202 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 42
[2021-02-19 19:10:53,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:10:53,710 INFO L93 Difference]: Finished difference Result 2003 states and 6504 transitions.
[2021-02-19 19:10:53,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2021-02-19 19:10:53,711 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:10:53,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:10:53,713 INFO L225 Difference]: With dead ends: 2003
[2021-02-19 19:10:53,714 INFO L226 Difference]: Without dead ends: 1988
[2021-02-19 19:10:53,714 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=326, Invalid=1480, Unknown=0, NotChecked=0, Total=1806
[2021-02-19 19:10:53,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1988 states.
[2021-02-19 19:10:53,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1988 to 1406.
[2021-02-19 19:10:53,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1406 states, 1405 states have (on average 3.3174377224199287) internal successors, (4661), 1405 states have internal predecessors, (4661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:53,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 4661 transitions.
[2021-02-19 19:10:53,732 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 4661 transitions. Word has length 26
[2021-02-19 19:10:53,732 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:10:53,732 INFO L480 AbstractCegarLoop]: Abstraction has 1406 states and 4661 transitions.
[2021-02-19 19:10:53,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:53,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 4661 transitions.
[2021-02-19 19:10:53,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:10:53,734 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:10:53,734 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:10:53,935 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable599,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:10:53,935 INFO L428 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:10:53,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:10:53,935 INFO L82 PathProgramCache]: Analyzing trace with hash -158392533, now seen corresponding path program 39 times
[2021-02-19 19:10:53,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:10:53,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623489467]
[2021-02-19 19:10:53,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:10:53,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:10:54,445 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:10:54,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623489467]
[2021-02-19 19:10:54,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712726395]
[2021-02-19 19:10:54,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:10:54,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2021-02-19 19:10:54,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:10:54,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-02-19 19:10:54,467 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:10:55,122 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,123 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:55,124 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:55,124 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,124 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,127 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19
[2021-02-19 19:10:55,128 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:55,133 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,134 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:55,135 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:55,136 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,136 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,138 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13
[2021-02-19 19:10:55,142 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:55,146 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,147 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:55,148 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:55,148 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,149 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,151 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16
[2021-02-19 19:10:55,163 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:55,167 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,168 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:55,169 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:55,169 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,170 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,173 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19
[2021-02-19 19:10:55,174 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:55,178 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,179 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:55,180 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:55,181 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,182 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,184 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13
[2021-02-19 19:10:55,186 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:55,189 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,190 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:55,191 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:55,192 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,192 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,194 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16
[2021-02-19 19:10:55,195 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:55,199 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,200 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:55,201 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:55,201 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,201 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,205 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19
[2021-02-19 19:10:55,207 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:55,211 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,212 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:55,213 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:55,213 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,214 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,216 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13
[2021-02-19 19:10:55,218 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:55,222 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,223 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:55,230 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:55,230 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,231 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,234 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13
[2021-02-19 19:10:55,235 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:55,239 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,240 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:55,241 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:55,242 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,242 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,245 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16
[2021-02-19 19:10:55,247 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:55,251 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,252 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:55,253 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:55,254 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,254 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,257 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19
[2021-02-19 19:10:55,258 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:55,261 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,262 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:55,263 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:55,263 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,264 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,266 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16
[2021-02-19 19:10:55,267 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:55,270 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,271 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:55,272 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:55,272 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,273 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,276 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13
[2021-02-19 19:10:55,278 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:55,281 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,281 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:55,282 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:55,283 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,283 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,285 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16
[2021-02-19 19:10:55,286 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:55,288 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,289 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:55,290 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:10:55,290 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:10:55,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16
[2021-02-19 19:10:55,291 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-02-19 19:10:55,319 INFO L628 ElimStorePlain]: treesize reduction 34, result has 44.3 percent of original size
[2021-02-19 19:10:55,320 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts.
[2021-02-19 19:10:55,321 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21
[2021-02-19 19:10:55,347 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:10:55,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:10:55,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 18
[2021-02-19 19:10:55,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134125512]
[2021-02-19 19:10:55,348 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-02-19 19:10:55,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:10:55,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-02-19 19:10:55,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342
[2021-02-19 19:10:55,349 INFO L87 Difference]: Start difference. First operand 1406 states and 4661 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:55,789 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62
[2021-02-19 19:10:56,124 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49
[2021-02-19 19:10:56,297 WARN L202 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69
[2021-02-19 19:10:56,891 WARN L202 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65
[2021-02-19 19:10:57,182 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50
[2021-02-19 19:10:57,524 WARN L202 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66
[2021-02-19 19:10:58,246 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60
[2021-02-19 19:10:58,503 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56
[2021-02-19 19:10:58,884 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 51
[2021-02-19 19:10:59,203 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42
[2021-02-19 19:10:59,468 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57
[2021-02-19 19:10:59,624 WARN L202 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59
[2021-02-19 19:10:59,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:10:59,929 INFO L93 Difference]: Finished difference Result 2581 states and 7991 transitions.
[2021-02-19 19:10:59,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states.
[2021-02-19 19:10:59,930 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:10:59,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:10:59,934 INFO L225 Difference]: With dead ends: 2581
[2021-02-19 19:10:59,934 INFO L226 Difference]: Without dead ends: 2536
[2021-02-19 19:10:59,935 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1409 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=699, Invalid=3591, Unknown=0, NotChecked=0, Total=4290
[2021-02-19 19:10:59,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2536 states.
[2021-02-19 19:10:59,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2536 to 1417.
[2021-02-19 19:10:59,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 1416 states have (on average 3.327683615819209) internal successors, (4712), 1416 states have internal predecessors, (4712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:59,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 4712 transitions.
[2021-02-19 19:10:59,956 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 4712 transitions. Word has length 26
[2021-02-19 19:10:59,956 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:10:59,956 INFO L480 AbstractCegarLoop]: Abstraction has 1417 states and 4712 transitions.
[2021-02-19 19:10:59,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:10:59,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 4712 transitions.
[2021-02-19 19:10:59,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:10:59,959 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:10:59,959 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:11:00,160 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable616
[2021-02-19 19:11:00,161 INFO L428 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:11:00,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:11:00,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1043919835, now seen corresponding path program 40 times
[2021-02-19 19:11:00,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:11:00,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068580313]
[2021-02-19 19:11:00,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:11:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:11:00,645 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:11:00,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068580313]
[2021-02-19 19:11:00,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065803222]
[2021-02-19 19:11:00,646 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:11:00,666 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-02-19 19:11:00,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:11:00,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-02-19 19:11:00,667 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:11:01,301 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,302 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:01,302 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,303 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,305 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19
[2021-02-19 19:11:01,306 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:01,310 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,311 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:01,311 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,312 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,314 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13
[2021-02-19 19:11:01,315 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:01,319 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,320 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:01,320 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,321 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,323 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13
[2021-02-19 19:11:01,325 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:01,328 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,329 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:01,329 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,330 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,332 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13
[2021-02-19 19:11:01,334 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:01,338 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,339 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:01,339 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,340 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,342 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16
[2021-02-19 19:11:01,343 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:01,347 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,348 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:01,348 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,349 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,351 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16
[2021-02-19 19:11:01,353 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:01,357 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:01,357 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,357 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,359 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,360 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19
[2021-02-19 19:11:01,362 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:01,367 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,368 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:01,368 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,369 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,371 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19
[2021-02-19 19:11:01,373 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:01,376 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,377 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:01,378 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,378 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,381 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16
[2021-02-19 19:11:01,382 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:01,386 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:01,386 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,387 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,388 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,390 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16
[2021-02-19 19:11:01,392 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:01,395 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,396 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:01,396 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,397 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,399 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16
[2021-02-19 19:11:01,400 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:01,403 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,404 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:01,405 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,405 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,408 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19
[2021-02-19 19:11:01,409 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:01,413 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:01,414 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,414 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,415 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,417 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13
[2021-02-19 19:11:01,419 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:01,423 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:01,424 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,424 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,426 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,427 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16
[2021-02-19 19:11:01,428 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:01,431 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,432 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:01,432 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:01,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13
[2021-02-19 19:11:01,434 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:01,462 INFO L628 ElimStorePlain]: treesize reduction 18, result has 60.0 percent of original size
[2021-02-19 19:11:01,463 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts.
[2021-02-19 19:11:01,463 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21
[2021-02-19 19:11:01,489 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:11:01,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:11:01,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 18
[2021-02-19 19:11:01,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426473633]
[2021-02-19 19:11:01,490 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-02-19 19:11:01,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:11:01,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-02-19 19:11:01,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342
[2021-02-19 19:11:01,491 INFO L87 Difference]: Start difference. First operand 1417 states and 4712 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:01,943 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63
[2021-02-19 19:11:02,335 WARN L202 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65
[2021-02-19 19:11:02,817 WARN L202 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66
[2021-02-19 19:11:03,008 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50
[2021-02-19 19:11:03,318 WARN L202 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68
[2021-02-19 19:11:03,746 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59
[2021-02-19 19:11:04,603 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41
[2021-02-19 19:11:04,747 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57
[2021-02-19 19:11:04,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:11:04,938 INFO L93 Difference]: Finished difference Result 2504 states and 7805 transitions.
[2021-02-19 19:11:04,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states.
[2021-02-19 19:11:04,939 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:11:04,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:11:04,942 INFO L225 Difference]: With dead ends: 2504
[2021-02-19 19:11:04,942 INFO L226 Difference]: Without dead ends: 2459
[2021-02-19 19:11:04,943 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1021 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=581, Invalid=2611, Unknown=0, NotChecked=0, Total=3192
[2021-02-19 19:11:04,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2459 states.
[2021-02-19 19:11:04,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2459 to 1417.
[2021-02-19 19:11:04,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 1416 states have (on average 3.3283898305084745) internal successors, (4713), 1416 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:04,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 4713 transitions.
[2021-02-19 19:11:04,963 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 4713 transitions. Word has length 26
[2021-02-19 19:11:04,963 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:11:04,963 INFO L480 AbstractCegarLoop]: Abstraction has 1417 states and 4713 transitions.
[2021-02-19 19:11:04,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:04,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 4713 transitions.
[2021-02-19 19:11:04,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:11:04,965 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:11:04,965 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:11:05,166 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable722
[2021-02-19 19:11:05,166 INFO L428 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:11:05,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:11:05,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1417398809, now seen corresponding path program 41 times
[2021-02-19 19:11:05,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:11:05,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575425771]
[2021-02-19 19:11:05,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:11:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:11:05,657 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:11:05,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575425771]
[2021-02-19 19:11:05,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341818856]
[2021-02-19 19:11:05,657 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:11:05,677 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2021-02-19 19:11:05,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:11:05,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-02-19 19:11:05,678 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:11:06,223 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:06,225 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:06,245 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:06,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 41
[2021-02-19 19:11:06,252 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:06,256 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:06,258 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:06,278 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size
[2021-02-19 19:11:06,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 26
[2021-02-19 19:11:06,280 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:06,284 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:06,286 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:06,309 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size
[2021-02-19 19:11:06,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 35
[2021-02-19 19:11:06,311 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:06,315 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:06,316 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:06,336 INFO L354 Elim1Store]: treesize reduction 19, result has 34.5 percent of original size
[2021-02-19 19:11:06,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 25
[2021-02-19 19:11:06,337 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:06,342 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:06,344 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:06,365 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size
[2021-02-19 19:11:06,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 26
[2021-02-19 19:11:06,367 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:06,371 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:06,373 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:06,397 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size
[2021-02-19 19:11:06,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 35
[2021-02-19 19:11:06,399 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:06,405 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:06,406 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:06,428 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size
[2021-02-19 19:11:06,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 28
[2021-02-19 19:11:06,430 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:06,435 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:06,436 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:06,457 INFO L354 Elim1Store]: treesize reduction 19, result has 34.5 percent of original size
[2021-02-19 19:11:06,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 28
[2021-02-19 19:11:06,458 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:06,463 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:06,464 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:06,476 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size
[2021-02-19 19:11:06,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1
[2021-02-19 19:11:06,477 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:06,481 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:06,483 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:06,493 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size
[2021-02-19 19:11:06,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 1
[2021-02-19 19:11:06,494 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:06,509 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:06,511 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:06,533 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size
[2021-02-19 19:11:06,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 25
[2021-02-19 19:11:06,535 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:06,540 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:06,541 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:06,553 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size
[2021-02-19 19:11:06,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1
[2021-02-19 19:11:06,554 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:06,559 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:06,561 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:06,580 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size
[2021-02-19 19:11:06,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 25
[2021-02-19 19:11:06,582 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:06,586 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:06,588 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:06,607 INFO L354 Elim1Store]: treesize reduction 21, result has 27.6 percent of original size
[2021-02-19 19:11:06,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 23
[2021-02-19 19:11:06,609 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:06,614 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:06,615 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:06,627 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size
[2021-02-19 19:11:06,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1
[2021-02-19 19:11:06,628 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:06,631 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:06,632 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:06,637 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size
[2021-02-19 19:11:06,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1
[2021-02-19 19:11:06,638 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:06,758 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 26
[2021-02-19 19:11:06,758 INFO L628 ElimStorePlain]: treesize reduction 168, result has 39.1 percent of original size
[2021-02-19 19:11:06,760 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts.
[2021-02-19 19:11:06,760 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:761, output treesize:90
[2021-02-19 19:11:06,853 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:11:06,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:11:06,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 18
[2021-02-19 19:11:06,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926771803]
[2021-02-19 19:11:06,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-02-19 19:11:06,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:11:06,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-02-19 19:11:06,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342
[2021-02-19 19:11:06,854 INFO L87 Difference]: Start difference. First operand 1417 states and 4713 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:07,161 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 40
[2021-02-19 19:11:07,457 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64
[2021-02-19 19:11:08,026 WARN L202 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68
[2021-02-19 19:11:08,161 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41
[2021-02-19 19:11:08,737 WARN L202 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67
[2021-02-19 19:11:09,116 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51
[2021-02-19 19:11:09,309 WARN L202 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60
[2021-02-19 19:11:09,593 WARN L202 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68
[2021-02-19 19:11:10,078 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57
[2021-02-19 19:11:10,529 WARN L202 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 47
[2021-02-19 19:11:10,800 WARN L202 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 46
[2021-02-19 19:11:10,926 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 41
[2021-02-19 19:11:11,203 WARN L202 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 48
[2021-02-19 19:11:11,421 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 40
[2021-02-19 19:11:11,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:11:11,970 INFO L93 Difference]: Finished difference Result 3507 states and 10909 transitions.
[2021-02-19 19:11:11,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states.
[2021-02-19 19:11:11,971 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:11:11,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:11:11,976 INFO L225 Difference]: With dead ends: 3507
[2021-02-19 19:11:11,976 INFO L226 Difference]: Without dead ends: 3447
[2021-02-19 19:11:11,977 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1252 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=802, Invalid=3230, Unknown=0, NotChecked=0, Total=4032
[2021-02-19 19:11:11,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states.
[2021-02-19 19:11:11,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 1434.
[2021-02-19 19:11:12,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1434 states, 1433 states have (on average 3.3440334961618983) internal successors, (4792), 1433 states have internal predecessors, (4792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:12,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 4792 transitions.
[2021-02-19 19:11:12,004 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 4792 transitions. Word has length 26
[2021-02-19 19:11:12,004 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:11:12,004 INFO L480 AbstractCegarLoop]: Abstraction has 1434 states and 4792 transitions.
[2021-02-19 19:11:12,004 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:12,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 4792 transitions.
[2021-02-19 19:11:12,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:11:12,006 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:11:12,006 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:11:12,207 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable818
[2021-02-19 19:11:12,207 INFO L428 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:11:12,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:11:12,207 INFO L82 PathProgramCache]: Analyzing trace with hash -426889313, now seen corresponding path program 13 times
[2021-02-19 19:11:12,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:11:12,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191311152]
[2021-02-19 19:11:12,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:11:12,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:11:12,702 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:11:12,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191311152]
[2021-02-19 19:11:12,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874825907]
[2021-02-19 19:11:12,702 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:11:12,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:11:12,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-02-19 19:11:12,722 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:11:13,130 WARN L202 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36
[2021-02-19 19:11:13,167 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_36], 2=[A, v_prenex_38]}
[2021-02-19 19:11:13,171 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:13,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-02-19 19:11:13,172 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:13,324 WARN L202 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45
[2021-02-19 19:11:13,324 INFO L628 ElimStorePlain]: treesize reduction 54, result has 69.8 percent of original size
[2021-02-19 19:11:13,328 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:13,328 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:13,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:11:13,330 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:13,380 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:13,383 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:13,384 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:13,386 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:13,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:11:13,387 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:13,390 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:13,391 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:13,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-02-19 19:11:13,392 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:13,433 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:13,435 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 5 xjuncts.
[2021-02-19 19:11:13,435 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:193, output treesize:51
[2021-02-19 19:11:13,502 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:11:13,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:11:13,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18
[2021-02-19 19:11:13,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603562376]
[2021-02-19 19:11:13,502 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states
[2021-02-19 19:11:13,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:11:13,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-02-19 19:11:13,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306
[2021-02-19 19:11:13,503 INFO L87 Difference]: Start difference. First operand 1434 states and 4792 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:14,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:11:14,443 INFO L93 Difference]: Finished difference Result 1781 states and 5846 transitions.
[2021-02-19 19:11:14,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2021-02-19 19:11:14,443 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:11:14,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:11:14,446 INFO L225 Difference]: With dead ends: 1781
[2021-02-19 19:11:14,446 INFO L226 Difference]: Without dead ends: 1766
[2021-02-19 19:11:14,446 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=145, Invalid=611, Unknown=0, NotChecked=0, Total=756
[2021-02-19 19:11:14,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states.
[2021-02-19 19:11:14,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 1426.
[2021-02-19 19:11:14,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1425 states have (on average 3.3480701754385964) internal successors, (4771), 1425 states have internal predecessors, (4771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:14,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 4771 transitions.
[2021-02-19 19:11:14,463 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 4771 transitions. Word has length 26
[2021-02-19 19:11:14,463 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:11:14,463 INFO L480 AbstractCegarLoop]: Abstraction has 1426 states and 4771 transitions.
[2021-02-19 19:11:14,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:14,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 4771 transitions.
[2021-02-19 19:11:14,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:11:14,465 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:11:14,465 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:11:14,665 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable919
[2021-02-19 19:11:14,666 INFO L428 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:11:14,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:11:14,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1195907103, now seen corresponding path program 14 times
[2021-02-19 19:11:14,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:11:14,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237643337]
[2021-02-19 19:11:14,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:11:14,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:11:15,059 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:11:15,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237643337]
[2021-02-19 19:11:15,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874142457]
[2021-02-19 19:11:15,060 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:11:15,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-02-19 19:11:15,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:11:15,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 30 conjunts are in the unsatisfiable core
[2021-02-19 19:11:15,082 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:11:15,470 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size
[2021-02-19 19:11:15,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19
[2021-02-19 19:11:15,471 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:15,480 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size
[2021-02-19 19:11:15,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19
[2021-02-19 19:11:15,481 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:15,504 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size
[2021-02-19 19:11:15,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 28
[2021-02-19 19:11:15,509 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:15,528 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:15,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35
[2021-02-19 19:11:15,531 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:15,548 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:15,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26
[2021-02-19 19:11:15,555 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:15,576 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size
[2021-02-19 19:11:15,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24
[2021-02-19 19:11:15,577 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:15,600 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size
[2021-02-19 19:11:15,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25
[2021-02-19 19:11:15,604 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:15,615 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size
[2021-02-19 19:11:15,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 19
[2021-02-19 19:11:15,616 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:15,632 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size
[2021-02-19 19:11:15,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 16
[2021-02-19 19:11:15,633 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:15,654 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size
[2021-02-19 19:11:15,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21
[2021-02-19 19:11:15,656 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:15,667 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size
[2021-02-19 19:11:15,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 22
[2021-02-19 19:11:15,668 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:15,678 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size
[2021-02-19 19:11:15,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:11:15,679 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:15,698 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:15,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35
[2021-02-19 19:11:15,700 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:15,710 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size
[2021-02-19 19:11:15,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:11:15,711 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:15,721 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size
[2021-02-19 19:11:15,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 19
[2021-02-19 19:11:15,722 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:15,744 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size
[2021-02-19 19:11:15,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28
[2021-02-19 19:11:15,747 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:15,874 WARN L202 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 43
[2021-02-19 19:11:15,875 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:15,885 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-02-19 19:11:15,886 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:737, output treesize:407
[2021-02-19 19:11:16,147 WARN L202 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46
[2021-02-19 19:11:16,389 WARN L202 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41
[2021-02-19 19:11:16,541 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:11:16,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:11:16,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20
[2021-02-19 19:11:16,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813613231]
[2021-02-19 19:11:16,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states
[2021-02-19 19:11:16,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:11:16,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2021-02-19 19:11:16,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380
[2021-02-19 19:11:16,542 INFO L87 Difference]: Start difference. First operand 1426 states and 4771 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:17,086 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 42
[2021-02-19 19:11:17,414 WARN L202 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 33
[2021-02-19 19:11:17,579 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 43
[2021-02-19 19:11:17,885 WARN L202 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58
[2021-02-19 19:11:18,114 WARN L202 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 41
[2021-02-19 19:11:18,351 WARN L202 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51
[2021-02-19 19:11:18,666 WARN L202 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 63
[2021-02-19 19:11:18,803 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53
[2021-02-19 19:11:19,380 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 49
[2021-02-19 19:11:19,681 WARN L202 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 46
[2021-02-19 19:11:19,993 WARN L202 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64
[2021-02-19 19:11:20,345 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61
[2021-02-19 19:11:20,664 WARN L202 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 32
[2021-02-19 19:11:21,086 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 40
[2021-02-19 19:11:21,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:11:21,184 INFO L93 Difference]: Finished difference Result 2107 states and 6739 transitions.
[2021-02-19 19:11:21,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2021-02-19 19:11:21,185 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:11:21,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:11:21,189 INFO L225 Difference]: With dead ends: 2107
[2021-02-19 19:11:21,189 INFO L226 Difference]: Without dead ends: 2092
[2021-02-19 19:11:21,189 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=274, Invalid=1532, Unknown=0, NotChecked=0, Total=1806
[2021-02-19 19:11:21,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2092 states.
[2021-02-19 19:11:21,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2092 to 1430.
[2021-02-19 19:11:21,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 1429 states have (on average 3.3533939818054583) internal successors, (4792), 1429 states have internal predecessors, (4792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:21,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 4792 transitions.
[2021-02-19 19:11:21,211 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 4792 transitions. Word has length 26
[2021-02-19 19:11:21,212 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:11:21,212 INFO L480 AbstractCegarLoop]: Abstraction has 1430 states and 4792 transitions.
[2021-02-19 19:11:21,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:21,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 4792 transitions.
[2021-02-19 19:11:21,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:11:21,215 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:11:21,215 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:11:21,436 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable928,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:11:21,437 INFO L428 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:11:21,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:11:21,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1175939077, now seen corresponding path program 15 times
[2021-02-19 19:11:21,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:11:21,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255614898]
[2021-02-19 19:11:21,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:11:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:11:21,944 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:11:21,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255614898]
[2021-02-19 19:11:21,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358176721]
[2021-02-19 19:11:21,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:11:21,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2021-02-19 19:11:21,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:11:21,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-02-19 19:11:21,966 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:11:22,448 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,449 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,451 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:22,451 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,454 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:22,457 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:11:22,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16
[2021-02-19 19:11:22,458 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:22,463 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,464 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,465 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:22,468 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:22,474 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:22,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 27
[2021-02-19 19:11:22,475 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:22,479 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,480 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,482 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:22,482 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,485 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:22,488 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:11:22,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19
[2021-02-19 19:11:22,489 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:22,494 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,494 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,496 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:22,499 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:22,503 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:11:22,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19
[2021-02-19 19:11:22,504 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:22,509 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,510 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,511 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:22,514 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:22,517 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:11:22,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19
[2021-02-19 19:11:22,518 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:22,524 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,525 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,527 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:22,530 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:22,538 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:22,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 24
[2021-02-19 19:11:22,544 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:22,550 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,551 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,552 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:22,553 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,556 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:22,563 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:22,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24
[2021-02-19 19:11:22,565 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:22,569 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,570 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,571 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:22,572 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,575 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:22,582 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:11:22,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 17
[2021-02-19 19:11:22,584 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:22,588 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,589 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,591 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:22,593 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:22,601 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:11:22,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 20
[2021-02-19 19:11:22,602 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:22,608 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,609 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,611 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:22,614 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:22,620 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:22,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 27
[2021-02-19 19:11:22,624 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:22,629 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,630 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,632 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:22,632 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,635 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:22,638 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:11:22,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16
[2021-02-19 19:11:22,639 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:22,643 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,644 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,645 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:22,646 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,649 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:22,655 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:22,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18
[2021-02-19 19:11:22,659 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:22,664 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,665 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,666 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:22,669 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:22,673 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:11:22,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16
[2021-02-19 19:11:22,674 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:22,678 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,679 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,680 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:22,684 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:22,687 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:11:22,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 22
[2021-02-19 19:11:22,688 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:22,693 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,694 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,695 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:22,696 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,699 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:22,702 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:11:22,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19
[2021-02-19 19:11:22,703 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:22,707 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,708 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,709 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:22,710 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:22,715 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:11:22,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 17
[2021-02-19 19:11:22,717 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:22,824 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 36
[2021-02-19 19:11:22,824 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:22,830 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-02-19 19:11:22,830 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:825, output treesize:196
[2021-02-19 19:11:23,015 WARN L202 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33
[2021-02-19 19:11:23,127 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:11:23,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:11:23,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16
[2021-02-19 19:11:23,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495374277]
[2021-02-19 19:11:23,127 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states
[2021-02-19 19:11:23,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:11:23,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2021-02-19 19:11:23,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240
[2021-02-19 19:11:23,128 INFO L87 Difference]: Start difference. First operand 1430 states and 4792 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:23,522 WARN L202 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 28
[2021-02-19 19:11:23,786 WARN L202 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 40
[2021-02-19 19:11:24,179 WARN L202 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 44
[2021-02-19 19:11:24,652 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42
[2021-02-19 19:11:24,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:11:24,686 INFO L93 Difference]: Finished difference Result 1996 states and 6536 transitions.
[2021-02-19 19:11:24,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2021-02-19 19:11:24,686 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:11:24,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:11:24,689 INFO L225 Difference]: With dead ends: 1996
[2021-02-19 19:11:24,689 INFO L226 Difference]: Without dead ends: 1981
[2021-02-19 19:11:24,690 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506
[2021-02-19 19:11:24,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1981 states.
[2021-02-19 19:11:24,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1981 to 1427.
[2021-02-19 19:11:24,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1427 states, 1426 states have (on average 3.349929873772791) internal successors, (4777), 1426 states have internal predecessors, (4777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:24,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1427 states to 1427 states and 4777 transitions.
[2021-02-19 19:11:24,715 INFO L78 Accepts]: Start accepts. Automaton has 1427 states and 4777 transitions. Word has length 26
[2021-02-19 19:11:24,715 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:11:24,716 INFO L480 AbstractCegarLoop]: Abstraction has 1427 states and 4777 transitions.
[2021-02-19 19:11:24,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:24,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1427 states and 4777 transitions.
[2021-02-19 19:11:24,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:11:24,718 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:11:24,718 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:11:24,940 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable982
[2021-02-19 19:11:24,940 INFO L428 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:11:24,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:11:24,941 INFO L82 PathProgramCache]: Analyzing trace with hash -801378205, now seen corresponding path program 16 times
[2021-02-19 19:11:24,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:11:24,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857567352]
[2021-02-19 19:11:24,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:11:24,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:11:25,461 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:11:25,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857567352]
[2021-02-19 19:11:25,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66473677]
[2021-02-19 19:11:25,462 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:11:25,485 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-02-19 19:11:25,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:11:25,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-02-19 19:11:25,486 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:11:25,861 WARN L202 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 48
[2021-02-19 19:11:26,147 WARN L202 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 49
[2021-02-19 19:11:26,230 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_49], 2=[A, v_prenex_47], 3=[v_prenex_48]}
[2021-02-19 19:11:26,236 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:26,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-02-19 19:11:26,239 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:26,386 WARN L202 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52
[2021-02-19 19:11:26,387 INFO L628 ElimStorePlain]: treesize reduction 88, result has 60.9 percent of original size
[2021-02-19 19:11:26,391 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:26,391 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:26,393 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:26,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-02-19 19:11:26,395 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:26,399 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:26,399 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:26,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:11:26,400 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:26,452 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:26,456 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:26,456 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:26,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:11:26,460 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:26,502 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:26,506 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:26,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7
[2021-02-19 19:11:26,508 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:26,547 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:26,549 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 4 dim-1 vars, End of recursive call: and 5 xjuncts.
[2021-02-19 19:11:26,549 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 7 variables, input treesize:239, output treesize:51
[2021-02-19 19:11:26,617 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:11:26,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:11:26,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18
[2021-02-19 19:11:26,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920634833]
[2021-02-19 19:11:26,618 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states
[2021-02-19 19:11:26,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:11:26,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-02-19 19:11:26,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306
[2021-02-19 19:11:26,619 INFO L87 Difference]: Start difference. First operand 1427 states and 4777 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:26,927 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 33
[2021-02-19 19:11:27,635 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49
[2021-02-19 19:11:27,881 WARN L202 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 52
[2021-02-19 19:11:28,339 WARN L202 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65
[2021-02-19 19:11:28,578 WARN L202 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73
[2021-02-19 19:11:28,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:11:28,743 INFO L93 Difference]: Finished difference Result 1936 states and 6341 transitions.
[2021-02-19 19:11:28,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2021-02-19 19:11:28,743 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:11:28,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:11:28,748 INFO L225 Difference]: With dead ends: 1936
[2021-02-19 19:11:28,748 INFO L226 Difference]: Without dead ends: 1921
[2021-02-19 19:11:28,749 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930
[2021-02-19 19:11:28,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1921 states.
[2021-02-19 19:11:28,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1921 to 1430.
[2021-02-19 19:11:28,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 1429 states have (on average 3.351294611616515) internal successors, (4789), 1429 states have internal predecessors, (4789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:28,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 4789 transitions.
[2021-02-19 19:11:28,774 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 4789 transitions. Word has length 26
[2021-02-19 19:11:28,775 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:11:28,775 INFO L480 AbstractCegarLoop]: Abstraction has 1430 states and 4789 transitions.
[2021-02-19 19:11:28,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:28,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 4789 transitions.
[2021-02-19 19:11:28,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:11:28,777 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:11:28,777 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:11:28,977 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1059,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:11:28,978 INFO L428 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:11:28,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:11:28,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1876056311, now seen corresponding path program 17 times
[2021-02-19 19:11:28,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:11:28,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216448997]
[2021-02-19 19:11:28,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:11:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:11:29,382 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:11:29,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216448997]
[2021-02-19 19:11:29,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000414907]
[2021-02-19 19:11:29,383 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:11:29,404 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2021-02-19 19:11:29,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:11:29,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-02-19 19:11:29,405 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:11:29,665 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:29,674 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:29,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18
[2021-02-19 19:11:29,679 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:29,684 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:29,691 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:11:29,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19
[2021-02-19 19:11:29,692 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:29,697 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:29,704 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:11:29,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16
[2021-02-19 19:11:29,705 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:29,710 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:29,719 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:11:29,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20
[2021-02-19 19:11:29,721 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:29,725 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:29,736 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:11:29,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-02-19 19:11:29,738 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:29,743 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:29,752 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:29,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24
[2021-02-19 19:11:29,758 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:29,763 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:29,769 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:11:29,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19
[2021-02-19 19:11:29,770 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:29,775 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:29,784 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:29,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24
[2021-02-19 19:11:29,786 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:29,791 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:29,797 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:11:29,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19
[2021-02-19 19:11:29,798 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:29,803 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:29,810 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:11:29,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:11:29,812 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:29,816 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:29,825 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:29,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-02-19 19:11:29,829 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:29,833 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:29,839 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:11:29,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19
[2021-02-19 19:11:29,840 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:29,844 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:29,852 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:11:29,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 22
[2021-02-19 19:11:29,854 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:29,857 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:29,867 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:11:29,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-02-19 19:11:29,869 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:29,873 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:29,881 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:29,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-02-19 19:11:29,883 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:29,886 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:29,889 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:11:29,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:11:29,890 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:29,972 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:29,974 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-02-19 19:11:29,974 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:609, output treesize:165
[2021-02-19 19:11:30,208 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:11:30,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:11:30,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19
[2021-02-19 19:11:30,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033695832]
[2021-02-19 19:11:30,209 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-02-19 19:11:30,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:11:30,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-02-19 19:11:30,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342
[2021-02-19 19:11:30,210 INFO L87 Difference]: Start difference. First operand 1430 states and 4789 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:30,976 WARN L202 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 30
[2021-02-19 19:11:31,217 WARN L202 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36
[2021-02-19 19:11:31,389 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52
[2021-02-19 19:11:31,620 WARN L202 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 46
[2021-02-19 19:11:31,921 WARN L202 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52
[2021-02-19 19:11:32,137 WARN L202 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 48
[2021-02-19 19:11:32,351 WARN L202 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 54
[2021-02-19 19:11:32,577 WARN L202 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41
[2021-02-19 19:11:32,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:11:32,740 INFO L93 Difference]: Finished difference Result 2058 states and 6679 transitions.
[2021-02-19 19:11:32,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2021-02-19 19:11:32,741 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:11:32,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:11:32,745 INFO L225 Difference]: With dead ends: 2058
[2021-02-19 19:11:32,745 INFO L226 Difference]: Without dead ends: 2043
[2021-02-19 19:11:32,745 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=258, Invalid=1148, Unknown=0, NotChecked=0, Total=1406
[2021-02-19 19:11:32,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states.
[2021-02-19 19:11:32,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 1424.
[2021-02-19 19:11:32,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 1423 states have (on average 3.3485593815881938) internal successors, (4765), 1423 states have internal predecessors, (4765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:32,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 4765 transitions.
[2021-02-19 19:11:32,771 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 4765 transitions. Word has length 26
[2021-02-19 19:11:32,771 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:11:32,771 INFO L480 AbstractCegarLoop]: Abstraction has 1424 states and 4765 transitions.
[2021-02-19 19:11:32,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:32,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 4765 transitions.
[2021-02-19 19:11:32,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:11:32,773 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:11:32,774 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:11:32,974 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1069
[2021-02-19 19:11:32,974 INFO L428 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:11:32,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:11:32,975 INFO L82 PathProgramCache]: Analyzing trace with hash 826223339, now seen corresponding path program 18 times
[2021-02-19 19:11:32,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:11:32,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437516908]
[2021-02-19 19:11:32,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:11:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:11:33,211 WARN L202 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39
[2021-02-19 19:11:33,348 WARN L202 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 30
[2021-02-19 19:11:33,584 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:11:33,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437516908]
[2021-02-19 19:11:33,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910411320]
[2021-02-19 19:11:33,585 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:11:33,606 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2021-02-19 19:11:33,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:11:33,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-02-19 19:11:33,607 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:11:34,031 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:34,037 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:34,040 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:34,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13
[2021-02-19 19:11:34,041 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:34,046 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:34,047 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:34,049 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:34,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-02-19 19:11:34,051 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:34,056 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:34,057 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:34,059 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:34,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:11:34,061 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:34,066 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:34,067 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:34,070 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:34,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:11:34,072 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:34,076 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:34,077 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:34,080 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:34,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-02-19 19:11:34,082 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:34,087 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:34,088 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:34,091 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:34,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13
[2021-02-19 19:11:34,093 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:34,098 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:34,099 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:34,102 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:34,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-02-19 19:11:34,104 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:34,109 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:34,110 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:34,113 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:34,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19
[2021-02-19 19:11:34,115 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:34,120 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:34,121 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:34,124 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:34,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19
[2021-02-19 19:11:34,126 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:34,131 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:34,131 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:34,134 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:34,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19
[2021-02-19 19:11:34,136 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:34,140 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:34,141 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:34,144 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:34,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-02-19 19:11:34,145 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:34,150 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:34,150 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:34,153 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:34,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-02-19 19:11:34,155 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:34,160 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:34,161 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:34,163 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:34,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:11:34,165 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:34,169 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:34,170 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:34,173 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:34,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:11:34,175 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:34,179 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:34,179 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:34,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-02-19 19:11:34,181 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:34,289 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23
[2021-02-19 19:11:34,289 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size
[2021-02-19 19:11:34,291 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts.
[2021-02-19 19:11:34,291 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51
[2021-02-19 19:11:34,370 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:11:34,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:11:34,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19
[2021-02-19 19:11:34,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353214492]
[2021-02-19 19:11:34,371 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-02-19 19:11:34,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:11:34,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-02-19 19:11:34,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342
[2021-02-19 19:11:34,372 INFO L87 Difference]: Start difference. First operand 1424 states and 4765 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:35,413 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52
[2021-02-19 19:11:35,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:11:35,831 INFO L93 Difference]: Finished difference Result 1909 states and 6205 transitions.
[2021-02-19 19:11:35,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2021-02-19 19:11:35,832 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:11:35,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:11:35,836 INFO L225 Difference]: With dead ends: 1909
[2021-02-19 19:11:35,836 INFO L226 Difference]: Without dead ends: 1884
[2021-02-19 19:11:35,837 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=185, Invalid=871, Unknown=0, NotChecked=0, Total=1056
[2021-02-19 19:11:35,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states.
[2021-02-19 19:11:35,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1459.
[2021-02-19 19:11:35,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1459 states, 1458 states have (on average 3.344307270233196) internal successors, (4876), 1458 states have internal predecessors, (4876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:35,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 4876 transitions.
[2021-02-19 19:11:35,858 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 4876 transitions. Word has length 26
[2021-02-19 19:11:35,858 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:11:35,858 INFO L480 AbstractCegarLoop]: Abstraction has 1459 states and 4876 transitions.
[2021-02-19 19:11:35,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:35,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 4876 transitions.
[2021-02-19 19:11:35,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:11:35,861 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:11:35,861 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:11:36,061 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1086,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:11:36,062 INFO L428 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:11:36,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:11:36,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1409101781, now seen corresponding path program 19 times
[2021-02-19 19:11:36,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:11:36,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621035931]
[2021-02-19 19:11:36,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:11:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:11:36,539 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 30
[2021-02-19 19:11:36,607 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:11:36,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621035931]
[2021-02-19 19:11:36,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233709645]
[2021-02-19 19:11:36,608 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:11:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:11:36,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-02-19 19:11:36,630 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:11:36,972 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:36,980 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:36,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-02-19 19:11:36,982 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:36,986 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:36,995 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:11:36,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-02-19 19:11:36,997 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:37,001 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:37,010 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:37,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18
[2021-02-19 19:11:37,018 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:37,023 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:37,029 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:11:37,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19
[2021-02-19 19:11:37,030 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:37,034 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:37,043 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:37,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24
[2021-02-19 19:11:37,045 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:37,049 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:37,055 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:11:37,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:11:37,057 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:37,061 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:37,066 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:11:37,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16
[2021-02-19 19:11:37,068 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:37,072 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:37,077 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:11:37,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19
[2021-02-19 19:11:37,078 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:37,082 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:37,091 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:37,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24
[2021-02-19 19:11:37,096 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:37,101 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:37,110 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:37,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-02-19 19:11:37,114 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:37,118 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:37,125 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:11:37,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19
[2021-02-19 19:11:37,126 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:37,130 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:37,142 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:11:37,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-02-19 19:11:37,144 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:37,148 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:37,155 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:11:37,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19
[2021-02-19 19:11:37,156 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:37,160 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:37,167 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:11:37,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 22
[2021-02-19 19:11:37,168 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:37,172 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:37,179 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:11:37,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:11:37,180 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:37,183 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:37,189 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:11:37,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20
[2021-02-19 19:11:37,192 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:37,286 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:37,291 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-02-19 19:11:37,292 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:689, output treesize:174
[2021-02-19 19:11:37,509 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:11:37,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:11:37,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18
[2021-02-19 19:11:37,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995198882]
[2021-02-19 19:11:37,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states
[2021-02-19 19:11:37,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:11:37,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-02-19 19:11:37,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306
[2021-02-19 19:11:37,510 INFO L87 Difference]: Start difference. First operand 1459 states and 4876 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:38,511 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53
[2021-02-19 19:11:38,896 WARN L202 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47
[2021-02-19 19:11:39,102 WARN L202 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34
[2021-02-19 19:11:39,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:11:39,173 INFO L93 Difference]: Finished difference Result 2120 states and 6875 transitions.
[2021-02-19 19:11:39,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2021-02-19 19:11:39,173 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:11:39,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:11:39,177 INFO L225 Difference]: With dead ends: 2120
[2021-02-19 19:11:39,177 INFO L226 Difference]: Without dead ends: 2095
[2021-02-19 19:11:39,178 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=223, Invalid=833, Unknown=0, NotChecked=0, Total=1056
[2021-02-19 19:11:39,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2095 states.
[2021-02-19 19:11:39,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2095 to 1462.
[2021-02-19 19:11:39,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 1461 states have (on average 3.3449691991786445) internal successors, (4887), 1461 states have internal predecessors, (4887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:39,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 4887 transitions.
[2021-02-19 19:11:39,211 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 4887 transitions. Word has length 26
[2021-02-19 19:11:39,211 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:11:39,211 INFO L480 AbstractCegarLoop]: Abstraction has 1462 states and 4887 transitions.
[2021-02-19 19:11:39,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:39,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 4887 transitions.
[2021-02-19 19:11:39,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:11:39,214 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:11:39,214 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:11:39,430 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1118
[2021-02-19 19:11:39,430 INFO L428 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:11:39,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:11:39,430 INFO L82 PathProgramCache]: Analyzing trace with hash 957187695, now seen corresponding path program 20 times
[2021-02-19 19:11:39,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:11:39,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912902821]
[2021-02-19 19:11:39,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:11:39,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:11:39,839 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:11:39,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912902821]
[2021-02-19 19:11:39,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045915832]
[2021-02-19 19:11:39,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:11:39,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-02-19 19:11:39,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:11:39,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-02-19 19:11:39,863 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:11:40,241 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:40,251 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:11:40,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-02-19 19:11:40,254 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:40,259 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:40,265 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:40,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24
[2021-02-19 19:11:40,267 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:40,429 WARN L202 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 71
[2021-02-19 19:11:40,429 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:40,434 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:40,445 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:40,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-02-19 19:11:40,446 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:40,451 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:40,459 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:40,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-02-19 19:11:40,462 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:40,601 WARN L202 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 67
[2021-02-19 19:11:40,601 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:40,606 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:40,615 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:40,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18
[2021-02-19 19:11:40,620 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:40,625 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:40,633 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:11:40,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-02-19 19:11:40,635 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:40,765 WARN L202 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 60
[2021-02-19 19:11:40,765 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:40,770 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:40,779 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:40,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24
[2021-02-19 19:11:40,784 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:40,788 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:40,794 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:11:40,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20
[2021-02-19 19:11:40,796 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:40,912 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 51
[2021-02-19 19:11:40,912 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:40,918 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-02-19 19:11:40,918 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:309, output treesize:174
[2021-02-19 19:11:41,153 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:11:41,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:11:41,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19
[2021-02-19 19:11:41,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367886802]
[2021-02-19 19:11:41,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-02-19 19:11:41,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:11:41,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-02-19 19:11:41,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342
[2021-02-19 19:11:41,154 INFO L87 Difference]: Start difference. First operand 1462 states and 4887 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:42,027 WARN L202 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49
[2021-02-19 19:11:42,395 WARN L202 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30
[2021-02-19 19:11:42,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:11:42,471 INFO L93 Difference]: Finished difference Result 1641 states and 5398 transitions.
[2021-02-19 19:11:42,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2021-02-19 19:11:42,472 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:11:42,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:11:42,476 INFO L225 Difference]: With dead ends: 1641
[2021-02-19 19:11:42,476 INFO L226 Difference]: Without dead ends: 1616
[2021-02-19 19:11:42,476 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812
[2021-02-19 19:11:42,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states.
[2021-02-19 19:11:42,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1475.
[2021-02-19 19:11:42,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1475 states, 1474 states have (on average 3.351424694708277) internal successors, (4940), 1474 states have internal predecessors, (4940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:42,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 4940 transitions.
[2021-02-19 19:11:42,497 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 4940 transitions. Word has length 26
[2021-02-19 19:11:42,497 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:11:42,497 INFO L480 AbstractCegarLoop]: Abstraction has 1475 states and 4940 transitions.
[2021-02-19 19:11:42,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:42,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 4940 transitions.
[2021-02-19 19:11:42,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:11:42,501 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:11:42,501 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:11:42,701 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1159,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:11:42,702 INFO L428 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:11:42,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:11:42,702 INFO L82 PathProgramCache]: Analyzing trace with hash 423152783, now seen corresponding path program 21 times
[2021-02-19 19:11:42,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:11:42,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179745879]
[2021-02-19 19:11:42,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:11:42,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:11:42,972 WARN L202 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43
[2021-02-19 19:11:43,278 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:11:43,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179745879]
[2021-02-19 19:11:43,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678250597]
[2021-02-19 19:11:43,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:11:43,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2021-02-19 19:11:43,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:11:43,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-02-19 19:11:43,308 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:11:43,722 WARN L202 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 68
[2021-02-19 19:11:43,926 WARN L202 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 48
[2021-02-19 19:11:43,993 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_63], 2=[A, v_prenex_64]}
[2021-02-19 19:11:43,997 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:43,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-02-19 19:11:43,999 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:44,156 WARN L202 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45
[2021-02-19 19:11:44,157 INFO L628 ElimStorePlain]: treesize reduction 54, result has 69.8 percent of original size
[2021-02-19 19:11:44,160 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:44,161 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:44,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:11:44,163 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:44,215 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:44,219 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:44,219 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:44,221 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:44,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-02-19 19:11:44,223 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:44,226 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:44,227 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:44,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:11:44,228 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:44,271 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:44,274 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 5 xjuncts.
[2021-02-19 19:11:44,274 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:193, output treesize:51
[2021-02-19 19:11:44,345 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:11:44,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:11:44,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18
[2021-02-19 19:11:44,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8897538]
[2021-02-19 19:11:44,346 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states
[2021-02-19 19:11:44,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:11:44,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-02-19 19:11:44,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306
[2021-02-19 19:11:44,347 INFO L87 Difference]: Start difference. First operand 1475 states and 4940 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:44,901 WARN L202 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41
[2021-02-19 19:11:45,484 WARN L202 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 72
[2021-02-19 19:11:45,733 WARN L202 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 71
[2021-02-19 19:11:45,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:11:45,874 INFO L93 Difference]: Finished difference Result 1860 states and 6122 transitions.
[2021-02-19 19:11:45,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2021-02-19 19:11:45,874 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:11:45,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:11:45,878 INFO L225 Difference]: With dead ends: 1860
[2021-02-19 19:11:45,878 INFO L226 Difference]: Without dead ends: 1845
[2021-02-19 19:11:45,879 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756
[2021-02-19 19:11:45,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1845 states.
[2021-02-19 19:11:45,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1845 to 1486.
[2021-02-19 19:11:45,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 3.3515151515151516) internal successors, (4977), 1485 states have internal predecessors, (4977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:45,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 4977 transitions.
[2021-02-19 19:11:45,901 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 4977 transitions. Word has length 26
[2021-02-19 19:11:45,901 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:11:45,901 INFO L480 AbstractCegarLoop]: Abstraction has 1486 states and 4977 transitions.
[2021-02-19 19:11:45,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:45,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 4977 transitions.
[2021-02-19 19:11:45,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:11:45,905 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:11:45,905 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:11:46,114 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1190
[2021-02-19 19:11:46,114 INFO L428 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:11:46,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:11:46,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1194379997, now seen corresponding path program 22 times
[2021-02-19 19:11:46,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:11:46,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495902378]
[2021-02-19 19:11:46,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:11:46,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:11:46,332 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40
[2021-02-19 19:11:46,601 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:11:46,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495902378]
[2021-02-19 19:11:46,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792072829]
[2021-02-19 19:11:46,602 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:11:46,623 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-02-19 19:11:46,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:11:46,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-02-19 19:11:46,625 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:11:46,874 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:46,875 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:46,877 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:46,881 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:46,885 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:11:46,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19
[2021-02-19 19:11:46,886 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:46,892 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:46,893 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:46,895 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:46,898 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:46,905 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:46,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 27
[2021-02-19 19:11:46,907 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:46,912 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:46,913 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:46,914 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:46,915 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:46,918 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:46,927 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:11:46,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19
[2021-02-19 19:11:46,928 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:46,933 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:46,934 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:46,935 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:46,938 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:46,944 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:46,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 24
[2021-02-19 19:11:46,949 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:46,954 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:46,955 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:46,956 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:46,957 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:46,960 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:46,967 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:11:46,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 17
[2021-02-19 19:11:46,969 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:46,974 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:46,975 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:46,976 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:46,977 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:46,980 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:46,986 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:46,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24
[2021-02-19 19:11:46,988 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:46,992 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:46,993 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:46,994 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:46,995 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:46,998 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:47,005 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:47,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18
[2021-02-19 19:11:47,010 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:47,015 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:47,016 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:47,017 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:47,020 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:47,024 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:11:47,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16
[2021-02-19 19:11:47,025 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:47,029 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:47,030 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:47,031 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:47,032 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:47,035 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:47,038 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:11:47,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16
[2021-02-19 19:11:47,040 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:47,044 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:47,045 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:47,046 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:47,049 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:47,053 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:11:47,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19
[2021-02-19 19:11:47,054 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:47,058 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:47,059 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:47,061 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:47,064 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:47,071 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:11:47,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 20
[2021-02-19 19:11:47,073 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:47,078 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:47,079 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:47,080 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:47,081 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:47,084 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:47,087 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:11:47,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16
[2021-02-19 19:11:47,088 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:47,093 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:47,094 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:47,095 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:47,099 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:47,105 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:47,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 27
[2021-02-19 19:11:47,108 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:47,113 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:47,113 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:47,115 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:47,118 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:47,121 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:11:47,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 22
[2021-02-19 19:11:47,122 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:47,126 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:47,127 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:47,128 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:47,129 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:47,132 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:47,138 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:11:47,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 17
[2021-02-19 19:11:47,140 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:47,148 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:47,149 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:47,151 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:47,151 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:47,153 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:11:47,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19
[2021-02-19 19:11:47,154 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:47,244 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:47,245 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-02-19 19:11:47,245 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:729, output treesize:181
[2021-02-19 19:11:47,487 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:11:47,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:11:47,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19
[2021-02-19 19:11:47,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328331154]
[2021-02-19 19:11:47,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-02-19 19:11:47,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:11:47,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-02-19 19:11:47,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342
[2021-02-19 19:11:47,489 INFO L87 Difference]: Start difference. First operand 1486 states and 4977 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:48,200 WARN L202 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 30
[2021-02-19 19:11:48,411 WARN L202 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51
[2021-02-19 19:11:48,999 WARN L202 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53
[2021-02-19 19:11:49,247 WARN L202 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 48
[2021-02-19 19:11:49,493 WARN L202 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41
[2021-02-19 19:11:49,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:11:49,618 INFO L93 Difference]: Finished difference Result 1971 states and 6465 transitions.
[2021-02-19 19:11:49,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2021-02-19 19:11:49,618 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:11:49,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:11:49,622 INFO L225 Difference]: With dead ends: 1971
[2021-02-19 19:11:49,622 INFO L226 Difference]: Without dead ends: 1952
[2021-02-19 19:11:49,623 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=220, Invalid=970, Unknown=0, NotChecked=0, Total=1190
[2021-02-19 19:11:49,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1952 states.
[2021-02-19 19:11:49,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1952 to 1487.
[2021-02-19 19:11:49,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1487 states, 1486 states have (on average 3.35464333781965) internal successors, (4985), 1486 states have internal predecessors, (4985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:49,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 4985 transitions.
[2021-02-19 19:11:49,645 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 4985 transitions. Word has length 26
[2021-02-19 19:11:49,645 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:11:49,645 INFO L480 AbstractCegarLoop]: Abstraction has 1487 states and 4985 transitions.
[2021-02-19 19:11:49,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:49,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 4985 transitions.
[2021-02-19 19:11:49,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:11:49,647 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:11:49,648 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:11:49,848 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1201,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:11:49,848 INFO L428 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:11:49,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:11:49,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1410644395, now seen corresponding path program 23 times
[2021-02-19 19:11:49,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:11:49,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931425707]
[2021-02-19 19:11:49,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:11:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:11:50,343 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:11:50,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931425707]
[2021-02-19 19:11:50,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545319782]
[2021-02-19 19:11:50,344 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:11:50,364 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2021-02-19 19:11:50,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:11:50,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core
[2021-02-19 19:11:50,366 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:11:50,870 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:50,880 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:50,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24
[2021-02-19 19:11:50,882 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:50,887 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:50,895 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:11:50,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-02-19 19:11:50,897 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:51,049 WARN L202 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 73
[2021-02-19 19:11:51,049 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:51,054 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:51,065 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:11:51,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20
[2021-02-19 19:11:51,067 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:51,072 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:51,079 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:51,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24
[2021-02-19 19:11:51,084 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:51,223 WARN L202 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 67
[2021-02-19 19:11:51,223 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:51,228 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:51,238 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:51,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-02-19 19:11:51,239 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:51,244 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:51,252 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:51,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-02-19 19:11:51,256 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:51,385 WARN L202 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 60
[2021-02-19 19:11:51,385 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:51,392 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:51,402 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:11:51,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-02-19 19:11:51,405 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:51,409 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:51,416 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:51,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18
[2021-02-19 19:11:51,421 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:51,558 WARN L202 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 53
[2021-02-19 19:11:51,558 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:51,565 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-02-19 19:11:51,565 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:325, output treesize:174
[2021-02-19 19:11:51,841 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:11:51,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:11:51,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20
[2021-02-19 19:11:51,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783628594]
[2021-02-19 19:11:51,842 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states
[2021-02-19 19:11:51,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:11:51,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2021-02-19 19:11:51,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380
[2021-02-19 19:11:51,843 INFO L87 Difference]: Start difference. First operand 1487 states and 4985 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:52,564 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 33
[2021-02-19 19:11:52,771 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45
[2021-02-19 19:11:53,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:11:53,454 INFO L93 Difference]: Finished difference Result 1973 states and 6478 transitions.
[2021-02-19 19:11:53,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2021-02-19 19:11:53,455 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:11:53,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:11:53,459 INFO L225 Difference]: With dead ends: 1973
[2021-02-19 19:11:53,459 INFO L226 Difference]: Without dead ends: 1948
[2021-02-19 19:11:53,459 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=175, Invalid=817, Unknown=0, NotChecked=0, Total=992
[2021-02-19 19:11:53,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states.
[2021-02-19 19:11:53,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1487.
[2021-02-19 19:11:53,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1487 states, 1486 states have (on average 3.35464333781965) internal successors, (4985), 1486 states have internal predecessors, (4985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:53,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 4985 transitions.
[2021-02-19 19:11:53,479 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 4985 transitions. Word has length 26
[2021-02-19 19:11:53,479 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:11:53,479 INFO L480 AbstractCegarLoop]: Abstraction has 1487 states and 4985 transitions.
[2021-02-19 19:11:53,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:53,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 4985 transitions.
[2021-02-19 19:11:53,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:11:53,481 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:11:53,481 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:11:53,682 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1226
[2021-02-19 19:11:53,682 INFO L428 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:11:53,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:11:53,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1510554133, now seen corresponding path program 42 times
[2021-02-19 19:11:53,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:11:53,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363299778]
[2021-02-19 19:11:53,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:11:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:11:54,322 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:11:54,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363299778]
[2021-02-19 19:11:54,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064484704]
[2021-02-19 19:11:54,322 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:11:54,345 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2021-02-19 19:11:54,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:11:54,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-02-19 19:11:54,346 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:11:55,024 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:55,025 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,026 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:55,026 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,029 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,030 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16
[2021-02-19 19:11:55,032 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:55,036 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:55,036 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,037 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:55,038 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,039 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,041 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16
[2021-02-19 19:11:55,042 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:55,046 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:55,046 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,047 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:55,048 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,049 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,051 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 13
[2021-02-19 19:11:55,052 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:55,057 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:55,057 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,058 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:55,059 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,061 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,063 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16
[2021-02-19 19:11:55,064 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:55,068 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:55,069 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,070 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:55,070 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,072 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,073 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 13
[2021-02-19 19:11:55,075 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:55,079 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:55,080 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,081 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:55,081 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,083 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,085 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19
[2021-02-19 19:11:55,086 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:55,091 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:55,091 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,092 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:55,093 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,094 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,096 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7
[2021-02-19 19:11:55,098 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:55,102 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:55,103 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,103 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:55,104 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,106 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,108 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13
[2021-02-19 19:11:55,109 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:55,114 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:55,114 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,115 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:55,115 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,117 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,120 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 16
[2021-02-19 19:11:55,121 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:55,126 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:55,126 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,127 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:55,128 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,130 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,131 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13
[2021-02-19 19:11:55,133 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:55,138 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:55,139 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,140 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:55,140 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,142 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,143 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19
[2021-02-19 19:11:55,145 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:55,150 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:55,151 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,152 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:55,152 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,154 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,155 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16
[2021-02-19 19:11:55,157 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:55,161 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:55,161 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,162 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:55,163 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,164 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,166 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16
[2021-02-19 19:11:55,168 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:55,172 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:55,172 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,173 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:55,174 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,175 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,177 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 13
[2021-02-19 19:11:55,178 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:55,182 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:55,182 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,183 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:55,184 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,185 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,187 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19
[2021-02-19 19:11:55,188 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:55,191 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:55,191 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,192 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:55,193 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:55,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 19
[2021-02-19 19:11:55,194 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:55,233 INFO L628 ElimStorePlain]: treesize reduction 38, result has 49.3 percent of original size
[2021-02-19 19:11:55,234 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts.
[2021-02-19 19:11:55,234 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:793, output treesize:27
[2021-02-19 19:11:55,273 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:11:55,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:11:55,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18
[2021-02-19 19:11:55,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143050340]
[2021-02-19 19:11:55,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-02-19 19:11:55,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:11:55,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-02-19 19:11:55,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342
[2021-02-19 19:11:55,274 INFO L87 Difference]: Start difference. First operand 1487 states and 4985 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:56,288 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37
[2021-02-19 19:11:56,667 WARN L202 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49
[2021-02-19 19:11:56,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:11:56,756 INFO L93 Difference]: Finished difference Result 1925 states and 6277 transitions.
[2021-02-19 19:11:56,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2021-02-19 19:11:56,757 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:11:56,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:11:56,760 INFO L225 Difference]: With dead ends: 1925
[2021-02-19 19:11:56,760 INFO L226 Difference]: Without dead ends: 1899
[2021-02-19 19:11:56,760 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=246, Invalid=1014, Unknown=0, NotChecked=0, Total=1260
[2021-02-19 19:11:56,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states.
[2021-02-19 19:11:56,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1491.
[2021-02-19 19:11:56,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1491 states, 1490 states have (on average 3.3523489932885906) internal successors, (4995), 1490 states have internal predecessors, (4995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:56,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 4995 transitions.
[2021-02-19 19:11:56,782 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 4995 transitions. Word has length 26
[2021-02-19 19:11:56,782 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:11:56,782 INFO L480 AbstractCegarLoop]: Abstraction has 1491 states and 4995 transitions.
[2021-02-19 19:11:56,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:11:56,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 4995 transitions.
[2021-02-19 19:11:56,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:11:56,784 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:11:56,784 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:11:56,984 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1258
[2021-02-19 19:11:56,984 INFO L428 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:11:56,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:11:56,985 INFO L82 PathProgramCache]: Analyzing trace with hash -442679569, now seen corresponding path program 43 times
[2021-02-19 19:11:56,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:11:56,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247863740]
[2021-02-19 19:11:56,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:11:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:11:57,449 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:11:57,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247863740]
[2021-02-19 19:11:57,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618383286]
[2021-02-19 19:11:57,449 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:11:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:11:57,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-02-19 19:11:57,469 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:11:57,789 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41
[2021-02-19 19:11:57,849 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_76, v_prenex_74], 5=[v_prenex_72, A]}
[2021-02-19 19:11:57,853 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:57,854 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:57,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13
[2021-02-19 19:11:57,856 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:57,971 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51
[2021-02-19 19:11:57,972 INFO L628 ElimStorePlain]: treesize reduction 144, result has 44.4 percent of original size
[2021-02-19 19:11:57,975 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:57,976 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:57,977 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:57,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13
[2021-02-19 19:11:57,979 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:58,018 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:58,021 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:58,021 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:58,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13
[2021-02-19 19:11:58,023 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:58,058 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:58,060 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:58,061 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:11:58,062 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:11:58,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13
[2021-02-19 19:11:58,063 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:11:58,092 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:11:58,094 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 4 xjuncts.
[2021-02-19 19:11:58,095 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:294, output treesize:43
[2021-02-19 19:11:58,156 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:11:58,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:11:58,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18
[2021-02-19 19:11:58,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353576889]
[2021-02-19 19:11:58,156 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-02-19 19:11:58,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:11:58,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-02-19 19:11:58,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342
[2021-02-19 19:11:58,157 INFO L87 Difference]: Start difference. First operand 1491 states and 4995 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:12:00,102 WARN L202 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50
[2021-02-19 19:12:00,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:12:00,277 INFO L93 Difference]: Finished difference Result 2081 states and 6792 transitions.
[2021-02-19 19:12:00,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2021-02-19 19:12:00,277 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:12:00,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:12:00,281 INFO L225 Difference]: With dead ends: 2081
[2021-02-19 19:12:00,281 INFO L226 Difference]: Without dead ends: 2066
[2021-02-19 19:12:00,281 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=362, Invalid=1530, Unknown=0, NotChecked=0, Total=1892
[2021-02-19 19:12:00,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2066 states.
[2021-02-19 19:12:00,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2066 to 1491.
[2021-02-19 19:12:00,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1491 states, 1490 states have (on average 3.3523489932885906) internal successors, (4995), 1490 states have internal predecessors, (4995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:12:00,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 4995 transitions.
[2021-02-19 19:12:00,301 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 4995 transitions. Word has length 26
[2021-02-19 19:12:00,301 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:12:00,302 INFO L480 AbstractCegarLoop]: Abstraction has 1491 states and 4995 transitions.
[2021-02-19 19:12:00,302 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:12:00,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 4995 transitions.
[2021-02-19 19:12:00,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:12:00,304 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:12:00,304 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:12:00,504 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1372,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:12:00,504 INFO L428 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:12:00,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:12:00,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1031054993, now seen corresponding path program 24 times
[2021-02-19 19:12:00,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:12:00,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919105305]
[2021-02-19 19:12:00,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:12:00,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:12:00,982 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:12:00,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919105305]
[2021-02-19 19:12:00,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655977414]
[2021-02-19 19:12:00,983 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:12:01,004 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2021-02-19 19:12:01,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:12:01,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-02-19 19:12:01,005 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:12:01,465 WARN L202 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 105
[2021-02-19 19:12:02,251 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:12:02,274 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size
[2021-02-19 19:12:02,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21
[2021-02-19 19:12:02,277 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:02,449 WARN L202 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 145
[2021-02-19 19:12:02,449 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:12:02,459 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:12:02,472 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:12:02,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26
[2021-02-19 19:12:02,482 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:02,645 WARN L202 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 138
[2021-02-19 19:12:02,646 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:12:02,653 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:12:02,671 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size
[2021-02-19 19:12:02,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24
[2021-02-19 19:12:02,673 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:02,835 WARN L202 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 135
[2021-02-19 19:12:02,835 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:12:02,845 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:12:02,864 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size
[2021-02-19 19:12:02,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25
[2021-02-19 19:12:02,869 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:03,034 WARN L202 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 130
[2021-02-19 19:12:03,035 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:12:03,045 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:12:03,064 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size
[2021-02-19 19:12:03,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 28
[2021-02-19 19:12:03,070 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:03,228 WARN L202 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 124
[2021-02-19 19:12:03,229 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:12:03,238 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:12:03,257 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size
[2021-02-19 19:12:03,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28
[2021-02-19 19:12:03,260 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:03,420 WARN L202 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 121
[2021-02-19 19:12:03,420 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:12:03,429 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:12:03,444 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:12:03,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35
[2021-02-19 19:12:03,446 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:03,615 WARN L202 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 118
[2021-02-19 19:12:03,616 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:12:03,625 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:12:03,641 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:12:03,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35
[2021-02-19 19:12:03,645 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:03,810 WARN L202 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 115
[2021-02-19 19:12:03,811 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:12:03,878 INFO L550 ElimStorePlain]: Start of recursive call 1: 16 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-02-19 19:12:03,879 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 24 variables, input treesize:373, output treesize:527
[2021-02-19 19:12:04,480 WARN L202 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58
[2021-02-19 19:12:04,837 WARN L202 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44
[2021-02-19 19:12:05,003 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:12:05,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:12:05,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20
[2021-02-19 19:12:05,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389899987]
[2021-02-19 19:12:05,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states
[2021-02-19 19:12:05,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:12:05,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2021-02-19 19:12:05,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380
[2021-02-19 19:12:05,004 INFO L87 Difference]: Start difference. First operand 1491 states and 4995 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:12:05,237 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 27
[2021-02-19 19:12:05,540 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43
[2021-02-19 19:12:05,817 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 42
[2021-02-19 19:12:06,263 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60
[2021-02-19 19:12:06,544 WARN L202 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 46
[2021-02-19 19:12:07,028 WARN L202 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 59
[2021-02-19 19:12:07,218 WARN L202 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 43
[2021-02-19 19:12:07,764 WARN L202 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81
[2021-02-19 19:12:08,341 WARN L202 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58
[2021-02-19 19:12:09,012 WARN L202 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 79
[2021-02-19 19:12:09,515 WARN L202 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 59
[2021-02-19 19:12:09,956 WARN L202 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58
[2021-02-19 19:12:10,671 WARN L202 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 75
[2021-02-19 19:12:11,139 WARN L202 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78
[2021-02-19 19:12:11,617 WARN L202 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 122
[2021-02-19 19:12:12,220 WARN L202 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 66
[2021-02-19 19:12:12,780 WARN L202 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 119
[2021-02-19 19:12:13,355 WARN L202 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 133
[2021-02-19 19:12:13,802 WARN L202 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 82
[2021-02-19 19:12:14,406 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 44
[2021-02-19 19:12:14,939 WARN L202 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 44
[2021-02-19 19:12:15,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:12:15,032 INFO L93 Difference]: Finished difference Result 2399 states and 7566 transitions.
[2021-02-19 19:12:15,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states.
[2021-02-19 19:12:15,033 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:12:15,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:12:15,038 INFO L225 Difference]: With dead ends: 2399
[2021-02-19 19:12:15,038 INFO L226 Difference]: Without dead ends: 2365
[2021-02-19 19:12:15,039 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=402, Invalid=1950, Unknown=0, NotChecked=0, Total=2352
[2021-02-19 19:12:15,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states.
[2021-02-19 19:12:15,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 1508.
[2021-02-19 19:12:15,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1508 states, 1507 states have (on average 3.3576642335766422) internal successors, (5060), 1507 states have internal predecessors, (5060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:12:15,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 5060 transitions.
[2021-02-19 19:12:15,064 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 5060 transitions. Word has length 26
[2021-02-19 19:12:15,065 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:12:15,065 INFO L480 AbstractCegarLoop]: Abstraction has 1508 states and 5060 transitions.
[2021-02-19 19:12:15,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:12:15,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 5060 transitions.
[2021-02-19 19:12:15,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:12:15,067 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:12:15,067 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:12:15,267 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1386
[2021-02-19 19:12:15,268 INFO L428 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:12:15,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:12:15,268 INFO L82 PathProgramCache]: Analyzing trace with hash 519326571, now seen corresponding path program 44 times
[2021-02-19 19:12:15,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:12:15,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047752705]
[2021-02-19 19:12:15,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:12:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:12:15,726 WARN L202 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 34
[2021-02-19 19:12:15,843 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41
[2021-02-19 19:12:16,020 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:12:16,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047752705]
[2021-02-19 19:12:16,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582276730]
[2021-02-19 19:12:16,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-02-19 19:12:16,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-02-19 19:12:16,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:12:16,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-02-19 19:12:16,054 INFO L286 TraceCheckSpWp]: Computing forward predicates...
Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:12:16,828 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,830 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:12:16,830 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,831 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,834 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13
[2021-02-19 19:12:16,835 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:16,840 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,841 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:12:16,841 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,842 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,845 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13
[2021-02-19 19:12:16,847 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:16,852 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,853 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:12:16,853 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,854 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,857 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16
[2021-02-19 19:12:16,858 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:16,863 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,864 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:12:16,865 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,865 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,869 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16
[2021-02-19 19:12:16,871 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:16,875 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,876 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:12:16,877 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,877 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,881 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13
[2021-02-19 19:12:16,883 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:16,888 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,890 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:12:16,890 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,891 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,894 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19
[2021-02-19 19:12:16,895 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:16,900 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,901 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:12:16,902 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,902 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,905 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16
[2021-02-19 19:12:16,907 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:16,912 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,913 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:12:16,913 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,914 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,917 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13
[2021-02-19 19:12:16,920 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:16,924 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,926 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:12:16,926 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,927 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,930 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16
[2021-02-19 19:12:16,931 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:16,936 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,937 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:12:16,938 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,938 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,942 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13
[2021-02-19 19:12:16,943 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:16,948 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,949 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:12:16,949 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,950 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,955 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19
[2021-02-19 19:12:16,957 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:16,962 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,963 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:12:16,964 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,964 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,968 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16
[2021-02-19 19:12:16,970 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:16,974 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,975 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:12:16,975 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,976 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,978 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19
[2021-02-19 19:12:16,980 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:16,983 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,984 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:12:16,985 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,985 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,988 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19
[2021-02-19 19:12:16,989 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:16,992 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,993 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:12:16,993 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:16,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16
[2021-02-19 19:12:16,995 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:17,028 INFO L628 ElimStorePlain]: treesize reduction 18, result has 60.0 percent of original size
[2021-02-19 19:12:17,030 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts.
[2021-02-19 19:12:17,030 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21
[2021-02-19 19:12:17,072 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:12:17,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:12:17,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18
[2021-02-19 19:12:17,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922668135]
[2021-02-19 19:12:17,073 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-02-19 19:12:17,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:12:17,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-02-19 19:12:17,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342
[2021-02-19 19:12:17,074 INFO L87 Difference]: Start difference. First operand 1508 states and 5060 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:12:17,677 WARN L202 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 37
[2021-02-19 19:12:17,997 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 41
[2021-02-19 19:12:18,292 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 39
[2021-02-19 19:12:18,578 WARN L202 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 39
[2021-02-19 19:12:19,072 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47
[2021-02-19 19:12:19,340 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 38
[2021-02-19 19:12:19,480 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 41
[2021-02-19 19:12:19,763 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42
[2021-02-19 19:12:19,925 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49
[2021-02-19 19:12:20,159 WARN L202 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 45
[2021-02-19 19:12:20,413 WARN L202 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 52
[2021-02-19 19:12:20,629 WARN L202 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53
[2021-02-19 19:12:21,014 WARN L202 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56
[2021-02-19 19:12:21,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:12:21,192 INFO L93 Difference]: Finished difference Result 2073 states and 6686 transitions.
[2021-02-19 19:12:21,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states.
[2021-02-19 19:12:21,192 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:12:21,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:12:21,196 INFO L225 Difference]: With dead ends: 2073
[2021-02-19 19:12:21,196 INFO L226 Difference]: Without dead ends: 2051
[2021-02-19 19:12:21,196 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=432, Invalid=2018, Unknown=0, NotChecked=0, Total=2450
[2021-02-19 19:12:21,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2051 states.
[2021-02-19 19:12:21,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2051 to 1508.
[2021-02-19 19:12:21,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1508 states, 1507 states have (on average 3.3576642335766422) internal successors, (5060), 1507 states have internal predecessors, (5060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:12:21,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 5060 transitions.
[2021-02-19 19:12:21,218 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 5060 transitions. Word has length 26
[2021-02-19 19:12:21,219 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:12:21,219 INFO L480 AbstractCegarLoop]: Abstraction has 1508 states and 5060 transitions.
[2021-02-19 19:12:21,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:12:21,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 5060 transitions.
[2021-02-19 19:12:21,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:12:21,221 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:12:21,221 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:12:21,421 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1448
[2021-02-19 19:12:21,422 INFO L428 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:12:21,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:12:21,422 INFO L82 PathProgramCache]: Analyzing trace with hash -456992273, now seen corresponding path program 45 times
[2021-02-19 19:12:21,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:12:21,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405921932]
[2021-02-19 19:12:21,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:12:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:12:21,749 WARN L202 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 43
[2021-02-19 19:12:21,991 WARN L202 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46
[2021-02-19 19:12:22,167 WARN L202 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 35
[2021-02-19 19:12:22,516 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:12:22,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405921932]
[2021-02-19 19:12:22,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586023047]
[2021-02-19 19:12:22,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:12:22,538 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2021-02-19 19:12:22,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:12:22,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core
[2021-02-19 19:12:22,539 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:12:22,956 WARN L202 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 50
[2021-02-19 19:12:23,214 WARN L202 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 99
[2021-02-19 19:12:23,604 WARN L202 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 101
[2021-02-19 19:12:24,176 INFO L354 Elim1Store]: treesize reduction 20, result has 59.2 percent of original size
[2021-02-19 19:12:24,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 44
[2021-02-19 19:12:24,183 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:24,292 INFO L354 Elim1Store]: treesize reduction 16, result has 67.3 percent of original size
[2021-02-19 19:12:24,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 51
[2021-02-19 19:12:24,298 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:25,000 WARN L202 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 173
[2021-02-19 19:12:25,001 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:12:25,099 INFO L354 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size
[2021-02-19 19:12:25,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 56
[2021-02-19 19:12:25,121 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:25,147 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size
[2021-02-19 19:12:25,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 1
[2021-02-19 19:12:25,149 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:26,313 WARN L202 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 166 DAG size of output: 162
[2021-02-19 19:12:26,314 INFO L628 ElimStorePlain]: treesize reduction 14, result has 98.4 percent of original size
[2021-02-19 19:12:26,377 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:12:26,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 61
[2021-02-19 19:12:26,413 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:26,494 INFO L354 Elim1Store]: treesize reduction 12, result has 75.5 percent of original size
[2021-02-19 19:12:26,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 52
[2021-02-19 19:12:26,506 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:27,083 WARN L202 SmtUtils]: Spent 576.00 ms on a formula simplification that was a NOOP. DAG size: 153
[2021-02-19 19:12:27,083 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:12:27,182 INFO L354 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size
[2021-02-19 19:12:27,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 59
[2021-02-19 19:12:27,194 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:27,277 INFO L354 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size
[2021-02-19 19:12:27,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 56
[2021-02-19 19:12:27,311 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:28,468 WARN L202 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 157 DAG size of output: 147
[2021-02-19 19:12:28,469 INFO L628 ElimStorePlain]: treesize reduction 37, result has 95.6 percent of original size
[2021-02-19 19:12:28,552 INFO L354 Elim1Store]: treesize reduction 16, result has 67.3 percent of original size
[2021-02-19 19:12:28,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 51
[2021-02-19 19:12:28,561 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:28,636 INFO L354 Elim1Store]: treesize reduction 12, result has 75.5 percent of original size
[2021-02-19 19:12:28,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 52
[2021-02-19 19:12:28,647 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:29,213 WARN L202 SmtUtils]: Spent 565.00 ms on a formula simplification that was a NOOP. DAG size: 142
[2021-02-19 19:12:29,213 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:12:29,309 INFO L354 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size
[2021-02-19 19:12:29,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 59
[2021-02-19 19:12:29,319 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:29,405 INFO L354 Elim1Store]: treesize reduction 4, result has 91.8 percent of original size
[2021-02-19 19:12:29,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 63
[2021-02-19 19:12:29,420 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:31,257 WARN L202 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 159 DAG size of output: 148
[2021-02-19 19:12:31,258 INFO L628 ElimStorePlain]: treesize reduction 70, result has 92.0 percent of original size
[2021-02-19 19:12:31,350 INFO L354 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size
[2021-02-19 19:12:31,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 59
[2021-02-19 19:12:31,380 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:31,449 INFO L354 Elim1Store]: treesize reduction 29, result has 40.8 percent of original size
[2021-02-19 19:12:31,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 38
[2021-02-19 19:12:31,452 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:32,648 WARN L202 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 147 DAG size of output: 142
[2021-02-19 19:12:32,649 INFO L628 ElimStorePlain]: treesize reduction 24, result has 97.1 percent of original size
[2021-02-19 19:12:32,712 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:12:32,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 67
[2021-02-19 19:12:32,764 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:32,823 INFO L354 Elim1Store]: treesize reduction 24, result has 51.0 percent of original size
[2021-02-19 19:12:32,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 43
[2021-02-19 19:12:32,831 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:34,524 WARN L202 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 153 DAG size of output: 138
[2021-02-19 19:12:34,525 INFO L628 ElimStorePlain]: treesize reduction 83, result has 90.3 percent of original size
[2021-02-19 19:12:34,629 INFO L550 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 8 dim-1 vars, End of recursive call: and 15 xjuncts.
[2021-02-19 19:12:34,630 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 17 variables, input treesize:913, output treesize:2087
[2021-02-19 19:12:35,467 WARN L202 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 67
[2021-02-19 19:12:35,678 WARN L202 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37
[2021-02-19 19:12:35,743 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:12:35,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:12:35,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23
[2021-02-19 19:12:35,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542613751]
[2021-02-19 19:12:35,744 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states
[2021-02-19 19:12:35,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:12:35,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2021-02-19 19:12:35,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552
[2021-02-19 19:12:35,745 INFO L87 Difference]: Start difference. First operand 1508 states and 5060 transitions. Second operand has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:12:36,035 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 21
[2021-02-19 19:12:36,581 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 32
[2021-02-19 19:12:37,132 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53
[2021-02-19 19:12:37,407 WARN L202 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 46
[2021-02-19 19:12:37,664 WARN L202 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63
[2021-02-19 19:12:37,977 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 47
[2021-02-19 19:12:38,534 WARN L202 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67
[2021-02-19 19:12:39,009 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53
[2021-02-19 19:12:39,468 WARN L202 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66
[2021-02-19 19:12:39,838 WARN L202 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62
[2021-02-19 19:12:41,194 WARN L202 SmtUtils]: Spent 739.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 89
[2021-02-19 19:12:41,780 WARN L202 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69
[2021-02-19 19:12:42,275 WARN L202 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66
[2021-02-19 19:12:42,522 WARN L202 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 36
[2021-02-19 19:12:43,505 WARN L202 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 127
[2021-02-19 19:12:44,387 WARN L202 SmtUtils]: Spent 759.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 92
[2021-02-19 19:12:45,876 WARN L202 SmtUtils]: Spent 993.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 132
[2021-02-19 19:12:46,476 WARN L202 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61
[2021-02-19 19:12:46,966 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 42
[2021-02-19 19:12:47,181 WARN L202 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 31
[2021-02-19 19:12:47,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:12:47,385 INFO L93 Difference]: Finished difference Result 2902 states and 9147 transitions.
[2021-02-19 19:12:47,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states.
[2021-02-19 19:12:47,386 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:12:47,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:12:47,391 INFO L225 Difference]: With dead ends: 2902
[2021-02-19 19:12:47,391 INFO L226 Difference]: Without dead ends: 2872
[2021-02-19 19:12:47,391 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1314 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=658, Invalid=3898, Unknown=0, NotChecked=0, Total=4556
[2021-02-19 19:12:47,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2872 states.
[2021-02-19 19:12:47,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2872 to 1554.
[2021-02-19 19:12:47,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1554 states, 1553 states have (on average 3.3644558918222796) internal successors, (5225), 1553 states have internal predecessors, (5225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:12:47,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 5225 transitions.
[2021-02-19 19:12:47,416 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 5225 transitions. Word has length 26
[2021-02-19 19:12:47,416 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:12:47,417 INFO L480 AbstractCegarLoop]: Abstraction has 1554 states and 5225 transitions.
[2021-02-19 19:12:47,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:12:47,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 5225 transitions.
[2021-02-19 19:12:47,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:12:47,419 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:12:47,419 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:12:47,619 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1546,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:12:47,620 INFO L428 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:12:47,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:12:47,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1125767463, now seen corresponding path program 25 times
[2021-02-19 19:12:47,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:12:47,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80076437]
[2021-02-19 19:12:47,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:12:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:12:47,842 WARN L202 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37
[2021-02-19 19:12:48,041 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39
[2021-02-19 19:12:48,270 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:12:48,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80076437]
[2021-02-19 19:12:48,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391746979]
[2021-02-19 19:12:48,271 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:12:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:12:48,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-02-19 19:12:48,296 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:12:48,875 WARN L202 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 48
[2021-02-19 19:12:49,229 WARN L202 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 49
[2021-02-19 19:12:49,346 INFO L446 ElimStorePlain]: Different costs {2=[A, v_prenex_153], 3=[v_prenex_151, v_prenex_152]}
[2021-02-19 19:12:49,354 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:12:49,355 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:49,360 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:49,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:12:49,363 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:49,370 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:12:49,371 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:49,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19
[2021-02-19 19:12:49,373 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:49,561 WARN L202 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52
[2021-02-19 19:12:49,562 INFO L628 ElimStorePlain]: treesize reduction 108, result has 55.6 percent of original size
[2021-02-19 19:12:49,567 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:12:49,568 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:49,570 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:49,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:12:49,572 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:49,576 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:12:49,577 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:12:49,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-02-19 19:12:49,579 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:49,642 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:12:49,646 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:12:49,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7
[2021-02-19 19:12:49,649 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:49,706 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:12:49,710 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:12:49,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-02-19 19:12:49,712 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:49,764 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:12:49,767 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 4 dim-1 vars, End of recursive call: and 5 xjuncts.
[2021-02-19 19:12:49,767 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 7 variables, input treesize:281, output treesize:56
[2021-02-19 19:12:49,855 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:12:49,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:12:49,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18
[2021-02-19 19:12:49,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442238244]
[2021-02-19 19:12:49,855 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states
[2021-02-19 19:12:49,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:12:49,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-02-19 19:12:49,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306
[2021-02-19 19:12:49,856 INFO L87 Difference]: Start difference. First operand 1554 states and 5225 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:12:50,662 WARN L202 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49
[2021-02-19 19:12:50,940 WARN L202 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42
[2021-02-19 19:12:51,128 WARN L202 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48
[2021-02-19 19:12:51,656 WARN L202 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55
[2021-02-19 19:12:52,082 WARN L202 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51
[2021-02-19 19:12:52,548 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 72
[2021-02-19 19:12:52,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:12:52,721 INFO L93 Difference]: Finished difference Result 2109 states and 6861 transitions.
[2021-02-19 19:12:52,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2021-02-19 19:12:52,722 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:12:52,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:12:52,725 INFO L225 Difference]: With dead ends: 2109
[2021-02-19 19:12:52,726 INFO L226 Difference]: Without dead ends: 2094
[2021-02-19 19:12:52,726 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=207, Invalid=723, Unknown=0, NotChecked=0, Total=930
[2021-02-19 19:12:52,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2094 states.
[2021-02-19 19:12:52,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2094 to 1560.
[2021-02-19 19:12:52,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1560 states, 1559 states have (on average 3.3669018601667737) internal successors, (5249), 1559 states have internal predecessors, (5249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:12:52,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 5249 transitions.
[2021-02-19 19:12:52,748 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 5249 transitions. Word has length 26
[2021-02-19 19:12:52,748 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:12:52,748 INFO L480 AbstractCegarLoop]: Abstraction has 1560 states and 5249 transitions.
[2021-02-19 19:12:52,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:12:52,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 5249 transitions.
[2021-02-19 19:12:52,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:12:52,751 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:12:52,751 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:12:52,951 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1751
[2021-02-19 19:12:52,951 INFO L428 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:12:52,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:12:52,952 INFO L82 PathProgramCache]: Analyzing trace with hash -491765317, now seen corresponding path program 26 times
[2021-02-19 19:12:52,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:12:52,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581345414]
[2021-02-19 19:12:52,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:12:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:12:53,258 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41
[2021-02-19 19:12:53,556 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:12:53,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581345414]
[2021-02-19 19:12:53,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766524424]
[2021-02-19 19:12:53,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:12:53,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-02-19 19:12:53,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:12:53,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-02-19 19:12:53,577 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:12:54,088 WARN L202 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 79
[2021-02-19 19:12:54,329 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:12:54,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 43
[2021-02-19 19:12:54,348 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:54,746 WARN L202 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 155
[2021-02-19 19:12:54,746 INFO L628 ElimStorePlain]: treesize reduction 9, result has 97.7 percent of original size
[2021-02-19 19:12:54,788 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size
[2021-02-19 19:12:54,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 32
[2021-02-19 19:12:54,790 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:54,989 WARN L202 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 155
[2021-02-19 19:12:54,989 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:12:55,033 INFO L354 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size
[2021-02-19 19:12:55,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 36
[2021-02-19 19:12:55,046 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:55,442 WARN L202 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 148
[2021-02-19 19:12:55,443 INFO L628 ElimStorePlain]: treesize reduction 9, result has 97.5 percent of original size
[2021-02-19 19:12:55,481 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size
[2021-02-19 19:12:55,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 29
[2021-02-19 19:12:55,486 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:55,680 WARN L202 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 144
[2021-02-19 19:12:55,681 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:12:55,722 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size
[2021-02-19 19:12:55,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 29
[2021-02-19 19:12:55,728 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:55,924 WARN L202 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 140
[2021-02-19 19:12:55,924 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:12:55,969 INFO L354 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size
[2021-02-19 19:12:55,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 39
[2021-02-19 19:12:55,972 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:56,173 WARN L202 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 139
[2021-02-19 19:12:56,174 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:12:56,202 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:12:56,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 34
[2021-02-19 19:12:56,214 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:56,421 WARN L202 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 132
[2021-02-19 19:12:56,422 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:12:56,456 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size
[2021-02-19 19:12:56,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 28
[2021-02-19 19:12:56,459 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-02-19 19:12:56,658 WARN L202 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 129
[2021-02-19 19:12:56,658 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:12:56,692 INFO L550 ElimStorePlain]: Start of recursive call 1: 16 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-02-19 19:12:56,693 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 24 variables, input treesize:381, output treesize:697
[2021-02-19 19:12:57,337 WARN L202 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79
[2021-02-19 19:12:57,720 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55
[2021-02-19 19:12:57,883 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:12:57,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:12:57,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19
[2021-02-19 19:12:57,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730701983]
[2021-02-19 19:12:57,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-02-19 19:12:57,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:12:57,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-02-19 19:12:57,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342
[2021-02-19 19:12:57,884 INFO L87 Difference]: Start difference. First operand 1560 states and 5249 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:12:58,061 WARN L202 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 27
[2021-02-19 19:12:58,265 WARN L202 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 30
[2021-02-19 19:12:58,770 WARN L202 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 36
[2021-02-19 19:12:58,974 WARN L202 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 39
[2021-02-19 19:12:59,208 WARN L202 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52
[2021-02-19 19:12:59,480 WARN L202 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 40
[2021-02-19 19:12:59,919 WARN L202 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 43
[2021-02-19 19:13:00,233 WARN L202 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 40
[2021-02-19 19:13:00,644 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62
[2021-02-19 19:13:00,787 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 63
[2021-02-19 19:13:01,324 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 81
[2021-02-19 19:13:01,780 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60
[2021-02-19 19:13:03,384 WARN L202 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 88 DAG size of output: 81
[2021-02-19 19:13:04,215 WARN L202 SmtUtils]: Spent 794.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 62
[2021-02-19 19:13:05,102 WARN L202 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 94
[2021-02-19 19:13:06,137 WARN L202 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 87
[2021-02-19 19:13:06,922 WARN L202 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 92
[2021-02-19 19:13:07,617 WARN L202 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 114
[2021-02-19 19:13:09,043 WARN L202 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 132 DAG size of output: 110
[2021-02-19 19:13:09,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:13:09,416 INFO L93 Difference]: Finished difference Result 2708 states and 8514 transitions.
[2021-02-19 19:13:09,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states.
[2021-02-19 19:13:09,417 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:13:09,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:13:09,422 INFO L225 Difference]: With dead ends: 2708
[2021-02-19 19:13:09,422 INFO L226 Difference]: Without dead ends: 2670
[2021-02-19 19:13:09,422 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=384, Invalid=1596, Unknown=0, NotChecked=0, Total=1980
[2021-02-19 19:13:09,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2670 states.
[2021-02-19 19:13:09,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2670 to 1556.
[2021-02-19 19:13:09,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1556 states, 1555 states have (on average 3.3659163987138263) internal successors, (5234), 1555 states have internal predecessors, (5234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:13:09,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 5234 transitions.
[2021-02-19 19:13:09,456 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 5234 transitions. Word has length 26
[2021-02-19 19:13:09,456 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:13:09,456 INFO L480 AbstractCegarLoop]: Abstraction has 1556 states and 5234 transitions.
[2021-02-19 19:13:09,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:13:09,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 5234 transitions.
[2021-02-19 19:13:09,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:13:09,458 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:13:09,459 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:13:09,659 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1763
[2021-02-19 19:13:09,659 INFO L428 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:13:09,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:13:09,659 INFO L82 PathProgramCache]: Analyzing trace with hash 745320095, now seen corresponding path program 46 times
[2021-02-19 19:13:09,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:13:09,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223025632]
[2021-02-19 19:13:09,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:13:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:13:10,048 WARN L202 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 43
[2021-02-19 19:13:10,354 WARN L202 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46
[2021-02-19 19:13:10,575 WARN L202 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 35
[2021-02-19 19:13:10,730 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34
[2021-02-19 19:13:11,035 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:13:11,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223025632]
[2021-02-19 19:13:11,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108188171]
[2021-02-19 19:13:11,035 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:13:11,057 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-02-19 19:13:11,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:13:11,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-02-19 19:13:11,059 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:13:11,448 WARN L202 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 49
[2021-02-19 19:13:11,722 WARN L202 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 101
[2021-02-19 19:13:12,017 WARN L202 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 58
[2021-02-19 19:13:12,193 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_195], 6=[v_prenex_193, v_prenex_197]}
[2021-02-19 19:13:12,199 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:13:12,200 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:12,201 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:13:12,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13
[2021-02-19 19:13:12,205 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:12,210 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:13:12,211 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:12,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13
[2021-02-19 19:13:12,213 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:12,390 WARN L202 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53
[2021-02-19 19:13:12,391 INFO L628 ElimStorePlain]: treesize reduction 152, result has 42.9 percent of original size
[2021-02-19 19:13:12,391 INFO L518 ElimStorePlain]: Eliminatee v_prenex_195 vanished before elimination
[2021-02-19 19:13:12,396 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:12,397 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:12,398 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:13:12,398 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:13:12,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13
[2021-02-19 19:13:12,401 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:12,458 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:13:12,463 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:12,463 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:13:12,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13
[2021-02-19 19:13:12,466 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:12,511 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:13:12,514 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 4 dim-1 vars, End of recursive call: and 4 xjuncts.
[2021-02-19 19:13:12,515 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 12 variables, input treesize:323, output treesize:43
[2021-02-19 19:13:12,597 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:13:12,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:13:12,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19
[2021-02-19 19:13:12,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132684792]
[2021-02-19 19:13:12,598 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states
[2021-02-19 19:13:12,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:13:12,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2021-02-19 19:13:12,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380
[2021-02-19 19:13:12,598 INFO L87 Difference]: Start difference. First operand 1556 states and 5234 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:13:12,956 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 40
[2021-02-19 19:13:13,312 WARN L202 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 35
[2021-02-19 19:13:13,575 WARN L202 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 49
[2021-02-19 19:13:13,759 WARN L202 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 45
[2021-02-19 19:13:13,961 WARN L202 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 36
[2021-02-19 19:13:14,285 WARN L202 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63
[2021-02-19 19:13:14,596 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45
[2021-02-19 19:13:14,752 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 35
[2021-02-19 19:13:14,989 WARN L202 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61
[2021-02-19 19:13:15,268 WARN L202 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 68
[2021-02-19 19:13:15,556 WARN L202 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 52
[2021-02-19 19:13:16,033 WARN L202 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69
[2021-02-19 19:13:16,276 WARN L202 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60
[2021-02-19 19:13:16,771 WARN L202 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65
[2021-02-19 19:13:17,055 WARN L202 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 104
[2021-02-19 19:13:17,434 WARN L202 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68
[2021-02-19 19:13:17,966 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 76
[2021-02-19 19:13:18,176 WARN L202 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47
[2021-02-19 19:13:18,500 WARN L202 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50
[2021-02-19 19:13:18,793 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39
[2021-02-19 19:13:18,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:13:18,890 INFO L93 Difference]: Finished difference Result 3118 states and 9958 transitions.
[2021-02-19 19:13:18,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states.
[2021-02-19 19:13:18,891 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:13:18,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:13:18,898 INFO L225 Difference]: With dead ends: 3118
[2021-02-19 19:13:18,898 INFO L226 Difference]: Without dead ends: 3082
[2021-02-19 19:13:18,898 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=529, Invalid=2333, Unknown=0, NotChecked=0, Total=2862
[2021-02-19 19:13:18,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3082 states.
[2021-02-19 19:13:18,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3082 to 1662.
[2021-02-19 19:13:18,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1661 states have (on average 3.3895243829018664) internal successors, (5630), 1661 states have internal predecessors, (5630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:13:18,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 5630 transitions.
[2021-02-19 19:13:18,927 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 5630 transitions. Word has length 26
[2021-02-19 19:13:18,927 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:13:18,927 INFO L480 AbstractCegarLoop]: Abstraction has 1662 states and 5630 transitions.
[2021-02-19 19:13:18,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:13:18,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 5630 transitions.
[2021-02-19 19:13:18,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:13:18,930 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:13:18,930 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:13:19,130 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1810
[2021-02-19 19:13:19,130 INFO L428 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:13:19,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:13:19,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1715998549, now seen corresponding path program 47 times
[2021-02-19 19:13:19,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:13:19,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330152549]
[2021-02-19 19:13:19,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:13:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:13:19,918 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:13:19,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330152549]
[2021-02-19 19:13:19,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106309104]
[2021-02-19 19:13:19,919 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:13:19,944 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2021-02-19 19:13:19,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:13:19,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-02-19 19:13:19,946 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:13:20,725 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:20,726 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:20,729 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:20,760 INFO L354 Elim1Store]: treesize reduction 18, result has 45.5 percent of original size
[2021-02-19 19:13:20,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 33
[2021-02-19 19:13:20,763 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:20,772 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:20,773 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:20,776 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:20,813 INFO L354 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size
[2021-02-19 19:13:20,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 34
[2021-02-19 19:13:20,820 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:20,831 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:20,832 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:20,835 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:20,853 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-02-19 19:13:20,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 1
[2021-02-19 19:13:20,854 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:20,864 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:20,866 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:20,869 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:20,919 INFO L354 Elim1Store]: treesize reduction 4, result has 87.9 percent of original size
[2021-02-19 19:13:20,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 47
[2021-02-19 19:13:20,926 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:20,936 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:20,938 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:20,941 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:20,973 INFO L354 Elim1Store]: treesize reduction 23, result has 30.3 percent of original size
[2021-02-19 19:13:20,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 28
[2021-02-19 19:13:20,975 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:20,984 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:20,986 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:20,989 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:21,021 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:13:21,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 45
[2021-02-19 19:13:21,036 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:21,047 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:21,048 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:21,051 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:21,068 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-02-19 19:13:21,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 1
[2021-02-19 19:13:21,069 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:21,080 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:21,082 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:21,085 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:21,100 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-02-19 19:13:21,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 1
[2021-02-19 19:13:21,102 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:21,111 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:21,112 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:21,114 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:21,148 INFO L354 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size
[2021-02-19 19:13:21,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 34
[2021-02-19 19:13:21,157 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:21,171 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:21,172 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:21,177 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:21,197 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-02-19 19:13:21,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1
[2021-02-19 19:13:21,199 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:21,208 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:21,210 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:21,213 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:21,229 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-02-19 19:13:21,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 1
[2021-02-19 19:13:21,230 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:21,240 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:21,241 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:21,244 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:21,259 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-02-19 19:13:21,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 1
[2021-02-19 19:13:21,260 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:21,269 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:21,270 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:21,274 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:21,289 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-02-19 19:13:21,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 1
[2021-02-19 19:13:21,291 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:21,299 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:21,301 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:21,303 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:21,317 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-02-19 19:13:21,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 1
[2021-02-19 19:13:21,318 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:21,327 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:21,328 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:21,331 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:21,346 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-02-19 19:13:21,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 1
[2021-02-19 19:13:21,347 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:21,355 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:21,356 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:21,359 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:21,364 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-02-19 19:13:21,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1
[2021-02-19 19:13:21,365 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:21,548 WARN L202 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28
[2021-02-19 19:13:21,548 INFO L628 ElimStorePlain]: treesize reduction 51, result has 70.9 percent of original size
[2021-02-19 19:13:21,551 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts.
[2021-02-19 19:13:21,551 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:841, output treesize:133
[2021-02-19 19:13:21,712 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 24
[2021-02-19 19:13:21,766 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:13:21,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:13:21,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 18
[2021-02-19 19:13:21,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644795481]
[2021-02-19 19:13:21,767 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-02-19 19:13:21,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:13:21,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-02-19 19:13:21,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342
[2021-02-19 19:13:21,767 INFO L87 Difference]: Start difference. First operand 1662 states and 5630 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:13:22,126 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 36
[2021-02-19 19:13:22,297 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33
[2021-02-19 19:13:22,537 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36
[2021-02-19 19:13:22,801 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 35
[2021-02-19 19:13:22,982 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 36
[2021-02-19 19:13:23,149 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 37
[2021-02-19 19:13:23,800 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46
[2021-02-19 19:13:24,025 WARN L202 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 44
[2021-02-19 19:13:24,202 WARN L202 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41
[2021-02-19 19:13:24,358 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43
[2021-02-19 19:13:24,868 WARN L202 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46
[2021-02-19 19:13:25,047 WARN L202 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42
[2021-02-19 19:13:25,322 WARN L202 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59
[2021-02-19 19:13:25,759 WARN L202 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47
[2021-02-19 19:13:26,275 WARN L202 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35
[2021-02-19 19:13:26,494 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 35
[2021-02-19 19:13:26,859 WARN L202 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39
[2021-02-19 19:13:27,303 WARN L202 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42
[2021-02-19 19:13:27,466 WARN L202 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 33
[2021-02-19 19:13:27,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:13:27,796 INFO L93 Difference]: Finished difference Result 3626 states and 11422 transitions.
[2021-02-19 19:13:27,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states.
[2021-02-19 19:13:27,797 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:13:27,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:13:27,806 INFO L225 Difference]: With dead ends: 3626
[2021-02-19 19:13:27,806 INFO L226 Difference]: Without dead ends: 3569
[2021-02-19 19:13:27,807 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=639, Invalid=2553, Unknown=0, NotChecked=0, Total=3192
[2021-02-19 19:13:27,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3569 states.
[2021-02-19 19:13:27,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3569 to 1688.
[2021-02-19 19:13:27,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1688 states, 1687 states have (on average 3.3947836395969175) internal successors, (5727), 1687 states have internal predecessors, (5727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:13:27,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 5727 transitions.
[2021-02-19 19:13:27,846 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 5727 transitions. Word has length 26
[2021-02-19 19:13:27,846 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:13:27,846 INFO L480 AbstractCegarLoop]: Abstraction has 1688 states and 5727 transitions.
[2021-02-19 19:13:27,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:13:27,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 5727 transitions.
[2021-02-19 19:13:27,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:13:27,849 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:13:27,849 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:13:28,050 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1829,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:13:28,050 INFO L428 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:13:28,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:13:28,050 INFO L82 PathProgramCache]: Analyzing trace with hash 701456227, now seen corresponding path program 27 times
[2021-02-19 19:13:28,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:13:28,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899727607]
[2021-02-19 19:13:28,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:13:28,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:13:28,341 WARN L202 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37
[2021-02-19 19:13:28,632 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33
[2021-02-19 19:13:28,789 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:13:28,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899727607]
[2021-02-19 19:13:28,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345336466]
[2021-02-19 19:13:28,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:13:28,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2021-02-19 19:13:28,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:13:28,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-02-19 19:13:28,814 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:13:29,133 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 36
[2021-02-19 19:13:29,592 WARN L202 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 79
[2021-02-19 19:13:30,000 WARN L202 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 162
[2021-02-19 19:13:30,322 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_218, A, v_prenex_219, v_prenex_220, v_prenex_222, v_prenex_216], 6=[v_prenex_217, v_prenex_221]}
[2021-02-19 19:13:30,373 INFO L354 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size
[2021-02-19 19:13:30,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 39
[2021-02-19 19:13:30,375 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:30,919 WARN L202 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 157
[2021-02-19 19:13:30,920 INFO L628 ElimStorePlain]: treesize reduction 112, result has 77.1 percent of original size
[2021-02-19 19:13:30,963 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size
[2021-02-19 19:13:30,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 28
[2021-02-19 19:13:30,965 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:31,217 WARN L202 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 154
[2021-02-19 19:13:31,218 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:13:31,252 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:13:31,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 43
[2021-02-19 19:13:31,259 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:31,748 WARN L202 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 151
[2021-02-19 19:13:31,749 INFO L628 ElimStorePlain]: treesize reduction 9, result has 97.6 percent of original size
[2021-02-19 19:13:31,793 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size
[2021-02-19 19:13:31,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 29
[2021-02-19 19:13:31,799 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:32,048 WARN L202 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 148
[2021-02-19 19:13:32,049 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:13:32,098 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size
[2021-02-19 19:13:32,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 32
[2021-02-19 19:13:32,101 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:32,350 WARN L202 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 146
[2021-02-19 19:13:32,350 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:13:32,399 INFO L354 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size
[2021-02-19 19:13:32,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 36
[2021-02-19 19:13:32,409 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:32,897 WARN L202 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 139
[2021-02-19 19:13:32,898 INFO L628 ElimStorePlain]: treesize reduction 9, result has 97.4 percent of original size
[2021-02-19 19:13:32,938 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size
[2021-02-19 19:13:32,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 29
[2021-02-19 19:13:32,945 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:33,173 WARN L202 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 136
[2021-02-19 19:13:33,174 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:13:33,204 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:13:33,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 34
[2021-02-19 19:13:33,219 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:33,439 WARN L202 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 129
[2021-02-19 19:13:33,439 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:13:33,476 INFO L550 ElimStorePlain]: Start of recursive call 1: 16 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-02-19 19:13:33,476 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 24 variables, input treesize:493, output treesize:396
[2021-02-19 19:13:34,009 WARN L202 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63
[2021-02-19 19:13:34,207 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:13:34,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:13:34,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19
[2021-02-19 19:13:34,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124908262]
[2021-02-19 19:13:34,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-02-19 19:13:34,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:13:34,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-02-19 19:13:34,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342
[2021-02-19 19:13:34,209 INFO L87 Difference]: Start difference. First operand 1688 states and 5727 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:13:35,030 WARN L202 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 37
[2021-02-19 19:13:35,214 WARN L202 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 42
[2021-02-19 19:13:35,519 WARN L202 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 36
[2021-02-19 19:13:35,917 WARN L202 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 43
[2021-02-19 19:13:36,487 WARN L202 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 55
[2021-02-19 19:13:36,901 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 40
[2021-02-19 19:13:37,402 WARN L202 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48
[2021-02-19 19:13:37,846 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58
[2021-02-19 19:13:38,300 WARN L202 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 83
[2021-02-19 19:13:38,660 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56
[2021-02-19 19:13:38,956 WARN L202 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43
[2021-02-19 19:13:39,661 WARN L202 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 91
[2021-02-19 19:13:40,400 WARN L202 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 178
[2021-02-19 19:13:41,429 WARN L202 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 109
[2021-02-19 19:13:41,870 WARN L202 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 67
[2021-02-19 19:13:42,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:13:42,127 INFO L93 Difference]: Finished difference Result 2266 states and 7462 transitions.
[2021-02-19 19:13:42,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2021-02-19 19:13:42,128 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:13:42,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:13:42,132 INFO L225 Difference]: With dead ends: 2266
[2021-02-19 19:13:42,132 INFO L226 Difference]: Without dead ends: 2236
[2021-02-19 19:13:42,133 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=289, Invalid=1517, Unknown=0, NotChecked=0, Total=1806
[2021-02-19 19:13:42,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2236 states.
[2021-02-19 19:13:42,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2236 to 1693.
[2021-02-19 19:13:42,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1692 states have (on average 3.391843971631206) internal successors, (5739), 1692 states have internal predecessors, (5739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:13:42,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 5739 transitions.
[2021-02-19 19:13:42,155 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 5739 transitions. Word has length 26
[2021-02-19 19:13:42,155 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:13:42,155 INFO L480 AbstractCegarLoop]: Abstraction has 1693 states and 5739 transitions.
[2021-02-19 19:13:42,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:13:42,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 5739 transitions.
[2021-02-19 19:13:42,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:13:42,157 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:13:42,157 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:13:42,358 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1938,75 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:13:42,358 INFO L428 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:13:42,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:13:42,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1121995759, now seen corresponding path program 28 times
[2021-02-19 19:13:42,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:13:42,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103061135]
[2021-02-19 19:13:42,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:13:42,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:13:42,611 WARN L202 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38
[2021-02-19 19:13:42,770 WARN L202 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 33
[2021-02-19 19:13:42,911 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 29
[2021-02-19 19:13:43,048 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:13:43,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103061135]
[2021-02-19 19:13:43,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459568228]
[2021-02-19 19:13:43,049 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:13:43,069 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-02-19 19:13:43,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:13:43,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 30 conjunts are in the unsatisfiable core
[2021-02-19 19:13:43,070 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:13:43,436 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:43,445 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:13:43,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19
[2021-02-19 19:13:43,447 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:43,452 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:43,461 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:13:43,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19
[2021-02-19 19:13:43,462 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:43,467 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:43,481 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:13:43,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24
[2021-02-19 19:13:43,484 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:43,489 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:43,504 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:13:43,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20
[2021-02-19 19:13:43,506 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:43,512 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:43,525 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:13:43,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18
[2021-02-19 19:13:43,533 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:43,539 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:43,548 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:13:43,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 22
[2021-02-19 19:13:43,549 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:43,555 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:43,573 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:13:43,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-02-19 19:13:43,578 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:43,584 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:43,593 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:13:43,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:13:43,595 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:43,601 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:43,616 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:13:43,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24
[2021-02-19 19:13:43,623 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:43,629 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:43,638 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:13:43,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19
[2021-02-19 19:13:43,640 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:43,646 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:43,655 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:13:43,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16
[2021-02-19 19:13:43,657 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:43,663 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:43,678 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:13:43,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-02-19 19:13:43,681 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:43,687 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:43,701 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:13:43,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-02-19 19:13:43,703 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:43,708 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:43,718 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:13:43,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19
[2021-02-19 19:13:43,719 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:43,724 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:43,736 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:13:43,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17
[2021-02-19 19:13:43,739 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:43,744 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:43,748 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:13:43,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16
[2021-02-19 19:13:43,750 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:43,913 WARN L202 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 38
[2021-02-19 19:13:43,913 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:13:43,916 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-02-19 19:13:43,916 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:737, output treesize:229
[2021-02-19 19:13:44,144 WARN L202 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 38
[2021-02-19 19:13:44,373 WARN L202 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 26
[2021-02-19 19:13:44,496 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:13:44,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:13:44,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19
[2021-02-19 19:13:44,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339457435]
[2021-02-19 19:13:44,497 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-02-19 19:13:44,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:13:44,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-02-19 19:13:44,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342
[2021-02-19 19:13:44,498 INFO L87 Difference]: Start difference. First operand 1693 states and 5739 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:13:44,706 WARN L202 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 31
[2021-02-19 19:13:45,432 WARN L202 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43
[2021-02-19 19:13:46,313 WARN L202 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42
[2021-02-19 19:13:47,041 WARN L202 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52
[2021-02-19 19:13:47,495 WARN L202 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34
[2021-02-19 19:13:47,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:13:47,754 INFO L93 Difference]: Finished difference Result 2340 states and 7712 transitions.
[2021-02-19 19:13:47,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2021-02-19 19:13:47,756 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:13:47,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:13:47,760 INFO L225 Difference]: With dead ends: 2340
[2021-02-19 19:13:47,760 INFO L226 Difference]: Without dead ends: 2294
[2021-02-19 19:13:47,761 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=234, Invalid=956, Unknown=0, NotChecked=0, Total=1190
[2021-02-19 19:13:47,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2294 states.
[2021-02-19 19:13:47,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2294 to 1711.
[2021-02-19 19:13:47,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1711 states, 1710 states have (on average 3.3953216374269006) internal successors, (5806), 1710 states have internal predecessors, (5806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:13:47,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 5806 transitions.
[2021-02-19 19:13:47,786 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 5806 transitions. Word has length 26
[2021-02-19 19:13:47,786 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:13:47,786 INFO L480 AbstractCegarLoop]: Abstraction has 1711 states and 5806 transitions.
[2021-02-19 19:13:47,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:13:47,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 5806 transitions.
[2021-02-19 19:13:47,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:13:47,789 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:13:47,790 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:13:47,990 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1983,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:13:47,990 INFO L428 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:13:47,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:13:47,991 INFO L82 PathProgramCache]: Analyzing trace with hash 654380625, now seen corresponding path program 29 times
[2021-02-19 19:13:47,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:13:47,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746783119]
[2021-02-19 19:13:47,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:13:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:13:48,367 WARN L202 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48
[2021-02-19 19:13:48,531 WARN L202 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38
[2021-02-19 19:13:48,680 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34
[2021-02-19 19:13:48,818 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32
[2021-02-19 19:13:48,936 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:13:48,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746783119]
[2021-02-19 19:13:48,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446664970]
[2021-02-19 19:13:48,937 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:13:48,958 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s)
[2021-02-19 19:13:48,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:13:48,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-02-19 19:13:48,960 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:13:49,371 WARN L202 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 38
[2021-02-19 19:13:49,645 WARN L202 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 59
[2021-02-19 19:13:50,131 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 71
[2021-02-19 19:13:50,228 INFO L446 ElimStorePlain]: Different costs {2=[v_prenex_239, v_prenex_230, v_prenex_234], 3=[v_prenex_229, A, v_prenex_232, v_prenex_233, v_prenex_236]}
[2021-02-19 19:13:50,240 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:50,258 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:13:50,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24
[2021-02-19 19:13:50,262 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:50,574 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 131
[2021-02-19 19:13:50,574 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:13:50,587 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:50,602 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:13:50,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-02-19 19:13:50,605 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:50,927 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 126
[2021-02-19 19:13:50,928 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:13:50,941 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:50,958 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:13:50,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27
[2021-02-19 19:13:50,964 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:51,283 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 120
[2021-02-19 19:13:51,284 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:13:51,294 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:51,299 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:51,313 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:13:51,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20
[2021-02-19 19:13:51,323 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:51,636 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 113
[2021-02-19 19:13:51,637 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:13:51,647 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:51,652 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:51,666 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size
[2021-02-19 19:13:51,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 22
[2021-02-19 19:13:51,670 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:51,968 WARN L202 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 107
[2021-02-19 19:13:51,969 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:13:51,986 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:51,988 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:52,002 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:13:52,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 26
[2021-02-19 19:13:52,028 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:52,328 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 98
[2021-02-19 19:13:52,329 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:13:52,340 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:52,343 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:52,357 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size
[2021-02-19 19:13:52,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19
[2021-02-19 19:13:52,361 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:52,638 WARN L202 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 93
[2021-02-19 19:13:52,639 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:13:52,649 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:52,651 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:13:52,664 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size
[2021-02-19 19:13:52,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 19
[2021-02-19 19:13:52,668 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-02-19 19:13:52,929 WARN L202 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 88
[2021-02-19 19:13:52,929 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:13:52,943 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-02-19 19:13:52,943 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:383, output treesize:212
[2021-02-19 19:13:53,376 WARN L202 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47
[2021-02-19 19:13:53,549 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 21
[2021-02-19 19:13:53,594 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:13:53,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:13:53,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20
[2021-02-19 19:13:53,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542274873]
[2021-02-19 19:13:53,595 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states
[2021-02-19 19:13:53,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:13:53,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2021-02-19 19:13:53,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380
[2021-02-19 19:13:53,596 INFO L87 Difference]: Start difference. First operand 1711 states and 5806 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:13:53,950 WARN L202 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 28
[2021-02-19 19:13:54,108 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 38
[2021-02-19 19:13:54,509 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41
[2021-02-19 19:13:54,676 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 36
[2021-02-19 19:13:54,948 WARN L202 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 50
[2021-02-19 19:13:55,487 WARN L202 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 48
[2021-02-19 19:13:55,958 WARN L202 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 44
[2021-02-19 19:13:56,626 WARN L202 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54
[2021-02-19 19:13:57,025 WARN L202 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 34
[2021-02-19 19:13:57,769 WARN L202 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58
[2021-02-19 19:13:58,430 WARN L202 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57
[2021-02-19 19:13:58,931 WARN L202 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71
[2021-02-19 19:13:59,604 WARN L202 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 75
[2021-02-19 19:14:01,206 WARN L202 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 85 DAG size of output: 79
[2021-02-19 19:14:01,501 WARN L202 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 51
[2021-02-19 19:14:02,401 WARN L202 SmtUtils]: Spent 714.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61
[2021-02-19 19:14:02,717 WARN L202 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34
[2021-02-19 19:14:02,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:14:02,840 INFO L93 Difference]: Finished difference Result 2532 states and 8267 transitions.
[2021-02-19 19:14:02,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2021-02-19 19:14:02,842 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:14:02,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:14:02,847 INFO L225 Difference]: With dead ends: 2532
[2021-02-19 19:14:02,847 INFO L226 Difference]: Without dead ends: 2498
[2021-02-19 19:14:02,848 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=328, Invalid=1478, Unknown=0, NotChecked=0, Total=1806
[2021-02-19 19:14:02,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2498 states.
[2021-02-19 19:14:02,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2498 to 1711.
[2021-02-19 19:14:02,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1711 states, 1710 states have (on average 3.391812865497076) internal successors, (5800), 1710 states have internal predecessors, (5800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:14:02,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 5800 transitions.
[2021-02-19 19:14:02,876 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 5800 transitions. Word has length 26
[2021-02-19 19:14:02,876 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:14:02,877 INFO L480 AbstractCegarLoop]: Abstraction has 1711 states and 5800 transitions.
[2021-02-19 19:14:02,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:14:02,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 5800 transitions.
[2021-02-19 19:14:02,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:14:02,880 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:14:02,880 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:14:03,102 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1999,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:14:03,102 INFO L428 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:14:03,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:14:03,102 INFO L82 PathProgramCache]: Analyzing trace with hash 568891871, now seen corresponding path program 48 times
[2021-02-19 19:14:03,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:14:03,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628544362]
[2021-02-19 19:14:03,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:14:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:14:03,378 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34
[2021-02-19 19:14:03,536 WARN L202 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37
[2021-02-19 19:14:03,699 WARN L202 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 30
[2021-02-19 19:14:04,044 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:14:04,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628544362]
[2021-02-19 19:14:04,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664839194]
[2021-02-19 19:14:04,045 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:14:04,065 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2021-02-19 19:14:04,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:14:04,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-02-19 19:14:04,067 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:14:05,187 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:05,188 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,190 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:05,191 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,194 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,200 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13
[2021-02-19 19:14:05,206 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:05,215 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:05,216 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,218 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:05,219 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,224 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,229 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16
[2021-02-19 19:14:05,233 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:05,242 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:05,243 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,245 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:05,246 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,249 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,253 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 16
[2021-02-19 19:14:05,256 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:05,265 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:05,266 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,267 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:05,268 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,272 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,276 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 13
[2021-02-19 19:14:05,279 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:05,288 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:05,289 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,291 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:05,292 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,296 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,300 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16
[2021-02-19 19:14:05,303 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:05,328 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:05,329 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,331 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:05,332 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,336 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,339 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 19
[2021-02-19 19:14:05,342 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:05,350 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:05,351 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,353 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:05,354 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,358 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,361 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7
[2021-02-19 19:14:05,366 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:05,373 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:05,374 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,376 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:05,377 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,381 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,384 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16
[2021-02-19 19:14:05,387 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:05,394 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:05,395 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,397 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:05,398 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,402 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,405 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13
[2021-02-19 19:14:05,409 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:05,417 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:05,418 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,420 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:05,421 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,424 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,427 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 13
[2021-02-19 19:14:05,431 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:05,439 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:05,440 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,442 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:05,443 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,446 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,449 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16
[2021-02-19 19:14:05,453 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:05,463 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:05,464 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,466 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:05,467 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,470 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,474 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 13
[2021-02-19 19:14:05,477 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:05,485 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:05,486 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,488 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:05,489 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,492 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,496 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16
[2021-02-19 19:14:05,499 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:05,507 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:05,508 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,510 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:05,511 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,515 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,518 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19
[2021-02-19 19:14:05,521 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:05,529 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:05,530 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,532 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:05,533 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,536 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,539 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19
[2021-02-19 19:14:05,542 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:05,548 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:05,549 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,551 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:05,552 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:05,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19
[2021-02-19 19:14:05,555 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:05,631 INFO L628 ElimStorePlain]: treesize reduction 38, result has 49.3 percent of original size
[2021-02-19 19:14:05,633 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts.
[2021-02-19 19:14:05,633 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:793, output treesize:27
[2021-02-19 19:14:05,722 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:14:05,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:14:05,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18
[2021-02-19 19:14:05,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610772864]
[2021-02-19 19:14:05,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-02-19 19:14:05,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:14:05,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-02-19 19:14:05,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342
[2021-02-19 19:14:05,724 INFO L87 Difference]: Start difference. First operand 1711 states and 5800 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:14:06,471 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 32
[2021-02-19 19:14:06,661 WARN L202 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 41
[2021-02-19 19:14:06,895 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31
[2021-02-19 19:14:07,175 WARN L202 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46
[2021-02-19 19:14:07,404 WARN L202 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 43
[2021-02-19 19:14:07,733 WARN L202 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 33
[2021-02-19 19:14:07,975 WARN L202 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44
[2021-02-19 19:14:08,180 WARN L202 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 35
[2021-02-19 19:14:08,373 WARN L202 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41
[2021-02-19 19:14:08,622 WARN L202 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34
[2021-02-19 19:14:09,050 WARN L202 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 46
[2021-02-19 19:14:09,266 WARN L202 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46
[2021-02-19 19:14:09,484 WARN L202 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 37
[2021-02-19 19:14:10,267 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49
[2021-02-19 19:14:10,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:14:10,458 INFO L93 Difference]: Finished difference Result 2174 states and 7157 transitions.
[2021-02-19 19:14:10,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2021-02-19 19:14:10,459 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:14:10,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:14:10,464 INFO L225 Difference]: With dead ends: 2174
[2021-02-19 19:14:10,464 INFO L226 Difference]: Without dead ends: 2152
[2021-02-19 19:14:10,464 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=359, Invalid=1533, Unknown=0, NotChecked=0, Total=1892
[2021-02-19 19:14:10,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states.
[2021-02-19 19:14:10,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 1689.
[2021-02-19 19:14:10,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1689 states, 1688 states have (on average 3.4016587677725116) internal successors, (5742), 1688 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:14:10,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 5742 transitions.
[2021-02-19 19:14:10,487 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 5742 transitions. Word has length 26
[2021-02-19 19:14:10,487 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:14:10,487 INFO L480 AbstractCegarLoop]: Abstraction has 1689 states and 5742 transitions.
[2021-02-19 19:14:10,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:14:10,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 5742 transitions.
[2021-02-19 19:14:10,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:14:10,490 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:14:10,490 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:14:10,690 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2016
[2021-02-19 19:14:10,693 INFO L428 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:14:10,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:14:10,694 INFO L82 PathProgramCache]: Analyzing trace with hash 650290927, now seen corresponding path program 49 times
[2021-02-19 19:14:10,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:14:10,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247438530]
[2021-02-19 19:14:10,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:14:10,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:14:10,959 WARN L202 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35
[2021-02-19 19:14:11,109 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38
[2021-02-19 19:14:11,242 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 31
[2021-02-19 19:14:11,484 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32
[2021-02-19 19:14:11,606 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:14:11,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247438530]
[2021-02-19 19:14:11,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851115325]
[2021-02-19 19:14:11,607 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:14:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:14:11,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-02-19 19:14:11,632 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:14:12,321 WARN L202 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45
[2021-02-19 19:14:12,440 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_242], 6=[v_prenex_240, v_prenex_244]}
[2021-02-19 19:14:12,448 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:12,450 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:12,451 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:12,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13
[2021-02-19 19:14:12,455 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:12,462 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:12,463 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:12,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13
[2021-02-19 19:14:12,467 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:12,725 WARN L202 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58
[2021-02-19 19:14:12,726 INFO L628 ElimStorePlain]: treesize reduction 168, result has 43.1 percent of original size
[2021-02-19 19:14:12,733 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:12,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7
[2021-02-19 19:14:12,738 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:12,823 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:14:12,830 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:12,832 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:12,834 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:12,835 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:12,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13
[2021-02-19 19:14:12,839 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:12,915 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:14:12,921 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:12,923 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:12,924 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:14:12,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13
[2021-02-19 19:14:12,928 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:12,998 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:14:13,004 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 3 xjuncts.
[2021-02-19 19:14:13,004 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:365, output treesize:33
[2021-02-19 19:14:13,126 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:14:13,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:14:13,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17
[2021-02-19 19:14:13,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650899905]
[2021-02-19 19:14:13,127 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states
[2021-02-19 19:14:13,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:14:13,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-02-19 19:14:13,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306
[2021-02-19 19:14:13,128 INFO L87 Difference]: Start difference. First operand 1689 states and 5742 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:14:14,074 WARN L202 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 33
[2021-02-19 19:14:14,243 WARN L202 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 34
[2021-02-19 19:14:14,691 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32
[2021-02-19 19:14:14,901 WARN L202 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 35
[2021-02-19 19:14:15,105 WARN L202 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 37
[2021-02-19 19:14:15,268 WARN L202 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 34
[2021-02-19 19:14:15,788 WARN L202 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37
[2021-02-19 19:14:16,182 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42
[2021-02-19 19:14:16,546 WARN L202 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47
[2021-02-19 19:14:16,875 WARN L202 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 43
[2021-02-19 19:14:17,577 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53
[2021-02-19 19:14:17,846 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 25
[2021-02-19 19:14:17,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:14:17,900 INFO L93 Difference]: Finished difference Result 2323 states and 7662 transitions.
[2021-02-19 19:14:17,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states.
[2021-02-19 19:14:17,902 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:14:17,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:14:17,907 INFO L225 Difference]: With dead ends: 2323
[2021-02-19 19:14:17,908 INFO L226 Difference]: Without dead ends: 2308
[2021-02-19 19:14:17,908 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=357, Invalid=1449, Unknown=0, NotChecked=0, Total=1806
[2021-02-19 19:14:17,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2308 states.
[2021-02-19 19:14:17,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2308 to 1689.
[2021-02-19 19:14:17,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1689 states, 1688 states have (on average 3.4016587677725116) internal successors, (5742), 1688 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:14:17,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 5742 transitions.
[2021-02-19 19:14:17,933 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 5742 transitions. Word has length 26
[2021-02-19 19:14:17,933 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:14:17,933 INFO L480 AbstractCegarLoop]: Abstraction has 1689 states and 5742 transitions.
[2021-02-19 19:14:17,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:14:17,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 5742 transitions.
[2021-02-19 19:14:17,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:14:17,936 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:14:17,936 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:14:18,136 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2122
[2021-02-19 19:14:18,137 INFO L428 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:14:18,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:14:18,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1306035039, now seen corresponding path program 50 times
[2021-02-19 19:14:18,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:14:18,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816005296]
[2021-02-19 19:14:18,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:14:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:14:18,431 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34
[2021-02-19 19:14:18,574 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37
[2021-02-19 19:14:18,811 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 29
[2021-02-19 19:14:19,102 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:14:19,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816005296]
[2021-02-19 19:14:19,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550857900]
[2021-02-19 19:14:19,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:14:19,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-02-19 19:14:19,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:14:19,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-02-19 19:14:19,141 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:14:19,646 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:19,648 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:19,652 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:19,696 INFO L354 Elim1Store]: treesize reduction 20, result has 35.5 percent of original size
[2021-02-19 19:14:19,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 26
[2021-02-19 19:14:19,700 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:19,711 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:19,712 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:19,716 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:19,763 INFO L354 Elim1Store]: treesize reduction 16, result has 48.4 percent of original size
[2021-02-19 19:14:19,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 33
[2021-02-19 19:14:19,766 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:19,778 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:19,779 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:19,783 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:19,830 INFO L354 Elim1Store]: treesize reduction 12, result has 61.3 percent of original size
[2021-02-19 19:14:19,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 34
[2021-02-19 19:14:19,839 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:19,851 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:19,853 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:19,857 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:19,902 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:14:19,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 49
[2021-02-19 19:14:19,913 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:19,925 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:19,927 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:19,930 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:19,952 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size
[2021-02-19 19:14:19,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1
[2021-02-19 19:14:19,953 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:19,965 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:19,967 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:19,971 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:20,011 INFO L354 Elim1Store]: treesize reduction 23, result has 25.8 percent of original size
[2021-02-19 19:14:20,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 26
[2021-02-19 19:14:20,015 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:20,030 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:20,032 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:20,036 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:20,078 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:14:20,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 43
[2021-02-19 19:14:20,095 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:20,107 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:20,109 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:20,113 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:20,133 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size
[2021-02-19 19:14:20,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 1
[2021-02-19 19:14:20,135 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:20,146 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:20,148 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:20,152 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:20,192 INFO L354 Elim1Store]: treesize reduction 16, result has 48.4 percent of original size
[2021-02-19 19:14:20,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 30
[2021-02-19 19:14:20,196 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:20,208 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:20,210 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:20,214 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:20,233 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size
[2021-02-19 19:14:20,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 1
[2021-02-19 19:14:20,235 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:20,247 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:20,249 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:20,253 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:20,272 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size
[2021-02-19 19:14:20,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1
[2021-02-19 19:14:20,274 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:20,286 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:20,288 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:20,292 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:20,312 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size
[2021-02-19 19:14:20,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1
[2021-02-19 19:14:20,314 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:20,325 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:20,327 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:20,331 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:20,369 INFO L354 Elim1Store]: treesize reduction 23, result has 25.8 percent of original size
[2021-02-19 19:14:20,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 23
[2021-02-19 19:14:20,372 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:20,384 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:20,386 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:20,390 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:20,408 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size
[2021-02-19 19:14:20,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 1
[2021-02-19 19:14:20,410 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:20,421 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:20,423 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:20,427 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:20,447 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size
[2021-02-19 19:14:20,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1
[2021-02-19 19:14:20,449 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:20,458 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:20,460 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:20,464 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:14:20,471 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size
[2021-02-19 19:14:20,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1
[2021-02-19 19:14:20,473 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:20,751 WARN L202 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 22
[2021-02-19 19:14:20,751 INFO L628 ElimStorePlain]: treesize reduction 116, result has 41.1 percent of original size
[2021-02-19 19:14:20,753 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts.
[2021-02-19 19:14:20,753 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:753, output treesize:81
[2021-02-19 19:14:20,998 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:14:20,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:14:20,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19
[2021-02-19 19:14:20,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425449403]
[2021-02-19 19:14:20,999 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states
[2021-02-19 19:14:20,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:14:20,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2021-02-19 19:14:20,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380
[2021-02-19 19:14:20,999 INFO L87 Difference]: Start difference. First operand 1689 states and 5742 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:14:21,592 WARN L202 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37
[2021-02-19 19:14:21,767 WARN L202 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 34
[2021-02-19 19:14:21,982 WARN L202 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 36
[2021-02-19 19:14:22,189 WARN L202 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 34
[2021-02-19 19:14:22,452 WARN L202 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39
[2021-02-19 19:14:22,641 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 36
[2021-02-19 19:14:22,922 WARN L202 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 47
[2021-02-19 19:14:23,226 WARN L202 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 35
[2021-02-19 19:14:23,456 WARN L202 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 40
[2021-02-19 19:14:23,678 WARN L202 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 38
[2021-02-19 19:14:23,870 WARN L202 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39
[2021-02-19 19:14:24,589 WARN L202 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42
[2021-02-19 19:14:24,785 WARN L202 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 40
[2021-02-19 19:14:25,036 WARN L202 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 49
[2021-02-19 19:14:25,278 WARN L202 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44
[2021-02-19 19:14:25,693 WARN L202 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52
[2021-02-19 19:14:26,268 WARN L202 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 44
[2021-02-19 19:14:26,598 WARN L202 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48
[2021-02-19 19:14:26,851 WARN L202 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45
[2021-02-19 19:14:27,364 WARN L202 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63
[2021-02-19 19:14:27,675 WARN L202 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60
[2021-02-19 19:14:27,900 WARN L202 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49
[2021-02-19 19:14:28,423 WARN L202 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49
[2021-02-19 19:14:28,769 WARN L202 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55
[2021-02-19 19:14:29,300 WARN L202 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63
[2021-02-19 19:14:29,755 WARN L202 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32
[2021-02-19 19:14:30,042 WARN L202 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39
[2021-02-19 19:14:30,710 WARN L202 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44
[2021-02-19 19:14:31,107 WARN L202 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29
[2021-02-19 19:14:31,361 WARN L202 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 32
[2021-02-19 19:14:31,575 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 29
[2021-02-19 19:14:31,919 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44
[2021-02-19 19:14:32,159 WARN L202 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 28
[2021-02-19 19:14:32,513 WARN L202 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 33
[2021-02-19 19:14:32,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:14:32,654 INFO L93 Difference]: Finished difference Result 3260 states and 10339 transitions.
[2021-02-19 19:14:32,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states.
[2021-02-19 19:14:32,656 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:14:32,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:14:32,663 INFO L225 Difference]: With dead ends: 3260
[2021-02-19 19:14:32,663 INFO L226 Difference]: Without dead ends: 3203
[2021-02-19 19:14:32,663 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1416 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=840, Invalid=3582, Unknown=0, NotChecked=0, Total=4422
[2021-02-19 19:14:32,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3203 states.
[2021-02-19 19:14:32,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3203 to 1707.
[2021-02-19 19:14:32,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1706 states have (on average 3.389214536928488) internal successors, (5782), 1706 states have internal predecessors, (5782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:14:32,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 5782 transitions.
[2021-02-19 19:14:32,693 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 5782 transitions. Word has length 26
[2021-02-19 19:14:32,693 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:14:32,693 INFO L480 AbstractCegarLoop]: Abstraction has 1707 states and 5782 transitions.
[2021-02-19 19:14:32,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:14:32,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 5782 transitions.
[2021-02-19 19:14:32,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:14:32,696 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:14:32,696 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:14:32,898 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2136,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:14:32,899 INFO L428 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:14:32,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:14:32,899 INFO L82 PathProgramCache]: Analyzing trace with hash -2073850769, now seen corresponding path program 51 times
[2021-02-19 19:14:32,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:14:32,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763457668]
[2021-02-19 19:14:32,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:14:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:14:33,282 WARN L202 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36
[2021-02-19 19:14:33,487 WARN L202 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39
[2021-02-19 19:14:33,762 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 29
[2021-02-19 19:14:33,911 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 29
[2021-02-19 19:14:34,224 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:14:34,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763457668]
[2021-02-19 19:14:34,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446742907]
[2021-02-19 19:14:34,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:14:34,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2021-02-19 19:14:34,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:14:34,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core
[2021-02-19 19:14:34,247 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:14:35,270 WARN L202 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 52
[2021-02-19 19:14:36,469 WARN L202 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 33
[2021-02-19 19:14:36,470 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:14:36,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 67
[2021-02-19 19:14:36,508 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:36,650 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 20
[2021-02-19 19:14:36,651 INFO L354 Elim1Store]: treesize reduction 24, result has 51.0 percent of original size
[2021-02-19 19:14:36,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 43
[2021-02-19 19:14:36,666 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:39,412 WARN L202 SmtUtils]: Spent 2.75 s on a formula simplification. DAG size of input: 193 DAG size of output: 172
[2021-02-19 19:14:39,413 INFO L628 ElimStorePlain]: treesize reduction 92, result has 90.7 percent of original size
[2021-02-19 19:14:39,583 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 26
[2021-02-19 19:14:39,584 INFO L354 Elim1Store]: treesize reduction 12, result has 75.5 percent of original size
[2021-02-19 19:14:39,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 52
[2021-02-19 19:14:39,603 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:39,781 WARN L202 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 25
[2021-02-19 19:14:39,781 INFO L354 Elim1Store]: treesize reduction 16, result has 67.3 percent of original size
[2021-02-19 19:14:39,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 51
[2021-02-19 19:14:39,791 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:41,113 WARN L202 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 169
[2021-02-19 19:14:41,114 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:14:41,353 WARN L202 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29
[2021-02-19 19:14:41,354 INFO L354 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size
[2021-02-19 19:14:41,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 59
[2021-02-19 19:14:41,376 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:41,591 WARN L202 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31
[2021-02-19 19:14:41,592 INFO L354 Elim1Store]: treesize reduction 4, result has 91.8 percent of original size
[2021-02-19 19:14:41,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 63
[2021-02-19 19:14:41,617 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:46,078 WARN L202 SmtUtils]: Spent 4.46 s on a formula simplification. DAG size of input: 189 DAG size of output: 177
[2021-02-19 19:14:46,080 INFO L628 ElimStorePlain]: treesize reduction 87, result has 91.2 percent of original size
[2021-02-19 19:14:46,255 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 21
[2021-02-19 19:14:46,256 INFO L354 Elim1Store]: treesize reduction 20, result has 59.2 percent of original size
[2021-02-19 19:14:46,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 44
[2021-02-19 19:14:46,267 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:46,434 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 24
[2021-02-19 19:14:46,435 INFO L354 Elim1Store]: treesize reduction 16, result has 67.3 percent of original size
[2021-02-19 19:14:46,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 51
[2021-02-19 19:14:46,443 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:47,883 WARN L202 SmtUtils]: Spent 1.44 s on a formula simplification that was a NOOP. DAG size: 172
[2021-02-19 19:14:47,884 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:14:48,065 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 21
[2021-02-19 19:14:48,066 INFO L354 Elim1Store]: treesize reduction 20, result has 59.2 percent of original size
[2021-02-19 19:14:48,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 44
[2021-02-19 19:14:48,079 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:48,245 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29
[2021-02-19 19:14:48,245 INFO L354 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size
[2021-02-19 19:14:48,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 56
[2021-02-19 19:14:48,299 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:51,003 WARN L202 SmtUtils]: Spent 2.70 s on a formula simplification. DAG size of input: 166 DAG size of output: 161
[2021-02-19 19:14:51,005 INFO L628 ElimStorePlain]: treesize reduction 68, result has 92.5 percent of original size
[2021-02-19 19:14:51,213 WARN L202 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29
[2021-02-19 19:14:51,214 INFO L354 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size
[2021-02-19 19:14:51,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 59
[2021-02-19 19:14:51,245 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:51,386 INFO L354 Elim1Store]: treesize reduction 29, result has 40.8 percent of original size
[2021-02-19 19:14:51,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 38
[2021-02-19 19:14:51,391 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:54,069 WARN L202 SmtUtils]: Spent 2.68 s on a formula simplification. DAG size of input: 160 DAG size of output: 156
[2021-02-19 19:14:54,071 INFO L628 ElimStorePlain]: treesize reduction 23, result has 97.3 percent of original size
[2021-02-19 19:14:54,307 WARN L202 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29
[2021-02-19 19:14:54,308 INFO L354 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size
[2021-02-19 19:14:54,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 59
[2021-02-19 19:14:54,333 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:54,523 WARN L202 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29
[2021-02-19 19:14:54,524 INFO L354 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size
[2021-02-19 19:14:54,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 56
[2021-02-19 19:14:54,551 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:58,483 WARN L202 SmtUtils]: Spent 3.93 s on a formula simplification. DAG size of input: 158 DAG size of output: 148
[2021-02-19 19:14:58,484 INFO L628 ElimStorePlain]: treesize reduction 37, result has 95.6 percent of original size
[2021-02-19 19:14:58,614 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:14:58,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 61
[2021-02-19 19:14:58,687 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-02-19 19:14:58,838 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 26
[2021-02-19 19:14:58,839 INFO L354 Elim1Store]: treesize reduction 12, result has 75.5 percent of original size
[2021-02-19 19:14:58,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 52
[2021-02-19 19:14:58,862 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-02-19 19:15:00,113 WARN L202 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 139
[2021-02-19 19:15:00,114 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:15:00,311 INFO L550 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 8 dim-1 vars, End of recursive call: and 15 xjuncts.
[2021-02-19 19:15:00,311 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 17 variables, input treesize:913, output treesize:4389
[2021-02-19 19:15:04,498 WARN L202 SmtUtils]: Spent 3.95 s on a formula simplification. DAG size of input: 204 DAG size of output: 89
[2021-02-19 19:15:05,498 WARN L202 SmtUtils]: Spent 880.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62
[2021-02-19 19:15:06,097 WARN L202 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39
[2021-02-19 19:15:06,239 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:15:06,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:15:06,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23
[2021-02-19 19:15:06,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899784853]
[2021-02-19 19:15:06,240 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states
[2021-02-19 19:15:06,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:15:06,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2021-02-19 19:15:06,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552
[2021-02-19 19:15:06,240 INFO L87 Difference]: Start difference. First operand 1707 states and 5782 transitions. Second operand has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:15:06,622 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 28
[2021-02-19 19:15:07,104 WARN L202 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 30
[2021-02-19 19:15:07,354 WARN L202 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 30
[2021-02-19 19:15:08,103 WARN L202 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 48
[2021-02-19 19:15:08,507 WARN L202 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31
[2021-02-19 19:15:08,986 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37
[2021-02-19 19:15:09,232 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 30
[2021-02-19 19:15:09,612 WARN L202 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 46
[2021-02-19 19:15:09,957 WARN L202 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 27
[2021-02-19 19:15:10,309 WARN L202 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 32
[2021-02-19 19:15:10,939 WARN L202 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 41
[2021-02-19 19:15:11,348 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 38
[2021-02-19 19:15:11,638 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 48
[2021-02-19 19:15:12,258 WARN L202 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 35
[2021-02-19 19:15:12,759 WARN L202 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51
[2021-02-19 19:15:13,402 WARN L202 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 29
[2021-02-19 19:15:13,774 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38
[2021-02-19 19:15:14,121 WARN L202 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53
[2021-02-19 19:15:14,402 WARN L202 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47
[2021-02-19 19:15:14,878 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 32
[2021-02-19 19:15:16,687 WARN L202 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 111 DAG size of output: 76
[2021-02-19 19:15:18,316 WARN L202 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 73 DAG size of output: 65
[2021-02-19 19:15:18,480 WARN L202 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30
[2021-02-19 19:15:20,237 WARN L202 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 130 DAG size of output: 65
[2021-02-19 19:15:23,025 WARN L202 SmtUtils]: Spent 2.63 s on a formula simplification. DAG size of input: 98 DAG size of output: 85
[2021-02-19 19:15:24,255 WARN L202 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 79 DAG size of output: 57
[2021-02-19 19:15:25,845 WARN L202 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 82 DAG size of output: 68
[2021-02-19 19:15:26,040 WARN L202 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 32
[2021-02-19 19:15:26,987 WARN L202 SmtUtils]: Spent 803.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 55
[2021-02-19 19:15:28,333 WARN L202 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 115 DAG size of output: 59
[2021-02-19 19:15:30,151 WARN L202 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 105 DAG size of output: 65
[2021-02-19 19:15:30,623 WARN L202 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38
[2021-02-19 19:15:31,519 WARN L202 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 47
[2021-02-19 19:15:32,056 WARN L202 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 27
[2021-02-19 19:15:32,665 WARN L202 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 31
[2021-02-19 19:15:32,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:15:32,897 INFO L93 Difference]: Finished difference Result 2885 states and 9299 transitions.
[2021-02-19 19:15:32,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states.
[2021-02-19 19:15:32,898 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:15:32,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:15:32,903 INFO L225 Difference]: With dead ends: 2885
[2021-02-19 19:15:32,903 INFO L226 Difference]: Without dead ends: 2840
[2021-02-19 19:15:32,903 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1119 ImplicationChecksByTransitivity, 31.4s TimeCoverageRelationStatistics Valid=670, Invalid=3362, Unknown=0, NotChecked=0, Total=4032
[2021-02-19 19:15:32,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2840 states.
[2021-02-19 19:15:32,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2840 to 1722.
[2021-02-19 19:15:32,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1721 states have (on average 3.3962812318419524) internal successors, (5845), 1721 states have internal predecessors, (5845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:15:32,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 5845 transitions.
[2021-02-19 19:15:32,930 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 5845 transitions. Word has length 26
[2021-02-19 19:15:32,930 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:15:32,930 INFO L480 AbstractCegarLoop]: Abstraction has 1722 states and 5845 transitions.
[2021-02-19 19:15:32,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:15:32,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 5845 transitions.
[2021-02-19 19:15:32,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:15:32,932 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:15:32,932 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:15:33,132 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2166
[2021-02-19 19:15:33,133 INFO L428 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:15:33,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:15:33,133 INFO L82 PathProgramCache]: Analyzing trace with hash 436262311, now seen corresponding path program 52 times
[2021-02-19 19:15:33,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:15:33,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379480722]
[2021-02-19 19:15:33,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:15:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:15:33,494 WARN L202 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36
[2021-02-19 19:15:33,710 WARN L202 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39
[2021-02-19 19:15:33,903 WARN L202 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33
[2021-02-19 19:15:34,041 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31
[2021-02-19 19:15:34,169 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25
[2021-02-19 19:15:34,372 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:15:34,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379480722]
[2021-02-19 19:15:34,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701122777]
[2021-02-19 19:15:34,373 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:15:34,392 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-02-19 19:15:34,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:15:34,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-02-19 19:15:34,393 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:15:35,321 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47
[2021-02-19 19:15:35,704 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_270, v_prenex_266], 5=[A, v_prenex_268]}
[2021-02-19 19:15:35,714 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:35,718 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:35,719 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:15:35,726 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:15:35,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13
[2021-02-19 19:15:35,730 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:15:35,737 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:35,740 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:35,740 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:15:35,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13
[2021-02-19 19:15:35,745 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:15:35,979 WARN L202 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 43
[2021-02-19 19:15:35,980 INFO L628 ElimStorePlain]: treesize reduction 143, result has 42.3 percent of original size
[2021-02-19 19:15:35,980 INFO L518 ElimStorePlain]: Eliminatee v_prenex_266 vanished before elimination
[2021-02-19 19:15:35,987 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:35,989 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:35,990 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:15:35,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 13
[2021-02-19 19:15:35,994 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:15:36,080 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:15:36,085 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-02-19 19:15:36,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13
[2021-02-19 19:15:36,088 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:15:36,162 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:15:36,167 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 4 xjuncts.
[2021-02-19 19:15:36,167 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:310, output treesize:43
[2021-02-19 19:15:36,300 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:15:36,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:15:36,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18
[2021-02-19 19:15:36,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792755944]
[2021-02-19 19:15:36,300 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-02-19 19:15:36,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:15:36,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-02-19 19:15:36,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342
[2021-02-19 19:15:36,301 INFO L87 Difference]: Start difference. First operand 1722 states and 5845 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:15:36,842 WARN L202 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 24
[2021-02-19 19:15:37,206 WARN L202 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 37
[2021-02-19 19:15:37,673 WARN L202 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39
[2021-02-19 19:15:37,884 WARN L202 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 41
[2021-02-19 19:15:38,182 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31
[2021-02-19 19:15:38,547 WARN L202 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 43
[2021-02-19 19:15:38,722 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 40
[2021-02-19 19:15:39,070 WARN L202 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 47
[2021-02-19 19:15:39,244 WARN L202 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 26
[2021-02-19 19:15:39,571 WARN L202 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 39
[2021-02-19 19:15:39,924 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52
[2021-02-19 19:15:40,404 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 48
[2021-02-19 19:15:40,773 WARN L202 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 49
[2021-02-19 19:15:41,069 WARN L202 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51
[2021-02-19 19:15:41,736 WARN L202 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62
[2021-02-19 19:15:42,253 WARN L202 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64
[2021-02-19 19:15:42,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:15:42,809 INFO L93 Difference]: Finished difference Result 2194 states and 7248 transitions.
[2021-02-19 19:15:42,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2021-02-19 19:15:42,811 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:15:42,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:15:42,814 INFO L225 Difference]: With dead ends: 2194
[2021-02-19 19:15:42,814 INFO L226 Difference]: Without dead ends: 2179
[2021-02-19 19:15:42,815 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=326, Invalid=1566, Unknown=0, NotChecked=0, Total=1892
[2021-02-19 19:15:42,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2179 states.
[2021-02-19 19:15:42,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2179 to 1720.
[2021-02-19 19:15:42,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1719 states have (on average 3.3961605584642234) internal successors, (5838), 1719 states have internal predecessors, (5838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:15:42,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 5838 transitions.
[2021-02-19 19:15:42,835 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 5838 transitions. Word has length 26
[2021-02-19 19:15:42,835 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:15:42,835 INFO L480 AbstractCegarLoop]: Abstraction has 1720 states and 5838 transitions.
[2021-02-19 19:15:42,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:15:42,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 5838 transitions.
[2021-02-19 19:15:42,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:15:42,837 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:15:42,837 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:15:43,037 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2376
[2021-02-19 19:15:43,038 INFO L428 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:15:43,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:15:43,038 INFO L82 PathProgramCache]: Analyzing trace with hash 2135160291, now seen corresponding path program 53 times
[2021-02-19 19:15:43,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:15:43,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015246149]
[2021-02-19 19:15:43,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:15:43,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:15:43,303 WARN L202 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33
[2021-02-19 19:15:43,451 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36
[2021-02-19 19:15:43,668 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 30
[2021-02-19 19:15:43,848 WARN L202 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 34
[2021-02-19 19:15:44,025 WARN L202 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 31
[2021-02-19 19:15:44,172 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:15:44,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015246149]
[2021-02-19 19:15:44,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018045629]
[2021-02-19 19:15:44,172 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:15:44,192 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s)
[2021-02-19 19:15:44,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:15:44,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-02-19 19:15:44,194 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:15:47,554 WARN L202 SmtUtils]: Spent 2.74 s on a formula simplification that was a NOOP. DAG size: 57
[2021-02-19 19:15:48,081 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 137
[2021-02-19 19:15:48,517 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:48,519 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:48,522 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:48,608 INFO L354 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size
[2021-02-19 19:15:48,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 37
[2021-02-19 19:15:48,621 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:15:48,644 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:48,646 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:48,649 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:48,668 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-02-19 19:15:48,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1
[2021-02-19 19:15:48,671 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:15:49,579 WARN L202 SmtUtils]: Spent 907.00 ms on a formula simplification that was a NOOP. DAG size: 160
[2021-02-19 19:15:49,580 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:15:49,598 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:49,601 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:49,606 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:49,657 INFO L354 Elim1Store]: treesize reduction 18, result has 45.5 percent of original size
[2021-02-19 19:15:49,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 30
[2021-02-19 19:15:49,662 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:15:49,679 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:49,681 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:49,686 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:49,721 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:15:49,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 45
[2021-02-19 19:15:49,739 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:15:50,633 WARN L202 SmtUtils]: Spent 894.00 ms on a formula simplification that was a NOOP. DAG size: 152
[2021-02-19 19:15:50,634 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:15:50,651 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:50,653 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:50,655 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:50,709 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:15:50,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 51
[2021-02-19 19:15:50,719 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:15:50,736 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:50,738 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:50,740 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:50,785 INFO L354 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size
[2021-02-19 19:15:50,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 37
[2021-02-19 19:15:50,793 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-02-19 19:15:53,153 WARN L202 SmtUtils]: Spent 2.36 s on a formula simplification. DAG size of input: 153 DAG size of output: 144
[2021-02-19 19:15:53,154 INFO L628 ElimStorePlain]: treesize reduction 48, result has 94.4 percent of original size
[2021-02-19 19:15:53,171 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:53,173 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:53,177 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:53,242 INFO L354 Elim1Store]: treesize reduction 18, result has 45.5 percent of original size
[2021-02-19 19:15:53,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 30
[2021-02-19 19:15:53,246 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-02-19 19:15:53,263 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:53,265 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:53,268 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:53,324 INFO L354 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size
[2021-02-19 19:15:53,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 37
[2021-02-19 19:15:53,332 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-02-19 19:15:54,112 WARN L202 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 138
[2021-02-19 19:15:54,113 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:15:54,132 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:54,134 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:54,140 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:54,206 INFO L354 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size
[2021-02-19 19:15:54,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 37
[2021-02-19 19:15:54,209 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-02-19 19:15:54,227 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:54,230 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:54,234 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:54,269 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:15:54,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 51
[2021-02-19 19:15:54,287 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-02-19 19:15:55,658 WARN L202 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 132 DAG size of output: 130
[2021-02-19 19:15:55,659 INFO L628 ElimStorePlain]: treesize reduction 48, result has 93.6 percent of original size
[2021-02-19 19:15:55,676 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:55,678 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:55,682 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:55,738 INFO L354 Elim1Store]: treesize reduction 18, result has 45.5 percent of original size
[2021-02-19 19:15:55,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 30
[2021-02-19 19:15:55,742 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-02-19 19:15:55,760 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:55,762 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:55,766 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:55,807 INFO L354 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size
[2021-02-19 19:15:55,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 37
[2021-02-19 19:15:55,811 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-02-19 19:15:56,437 WARN L202 SmtUtils]: Spent 626.00 ms on a formula simplification that was a NOOP. DAG size: 122
[2021-02-19 19:15:56,438 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:15:56,453 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:56,455 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:56,458 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:56,530 INFO L354 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size
[2021-02-19 19:15:56,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 34
[2021-02-19 19:15:56,541 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-02-19 19:15:56,556 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:56,558 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:56,561 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:56,572 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2021-02-19 19:15:56,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 1
[2021-02-19 19:15:56,574 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-02-19 19:15:57,157 WARN L202 SmtUtils]: Spent 582.00 ms on a formula simplification that was a NOOP. DAG size: 110
[2021-02-19 19:15:57,158 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:15:57,173 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:57,175 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:57,177 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:57,235 INFO L354 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size
[2021-02-19 19:15:57,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 34
[2021-02-19 19:15:57,244 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-02-19 19:15:57,259 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:57,261 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:57,264 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:15:57,323 INFO L354 Elim1Store]: treesize reduction 4, result has 87.9 percent of original size
[2021-02-19 19:15:57,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 47
[2021-02-19 19:15:57,332 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-02-19 19:15:57,841 WARN L202 SmtUtils]: Spent 508.00 ms on a formula simplification that was a NOOP. DAG size: 101
[2021-02-19 19:15:57,842 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:15:57,862 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 13 xjuncts.
[2021-02-19 19:15:57,862 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 16 variables, input treesize:1001, output treesize:539
[2021-02-19 19:15:58,210 WARN L202 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 27
[2021-02-19 19:15:58,365 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:15:58,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:15:58,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22
[2021-02-19 19:15:58,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850683486]
[2021-02-19 19:15:58,366 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states
[2021-02-19 19:15:58,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:15:58,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2021-02-19 19:15:58,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462
[2021-02-19 19:15:58,366 INFO L87 Difference]: Start difference. First operand 1720 states and 5838 transitions. Second operand has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:15:58,687 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 25
[2021-02-19 19:15:59,283 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66
[2021-02-19 19:15:59,549 WARN L202 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 40
[2021-02-19 19:16:00,094 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63
[2021-02-19 19:16:00,645 WARN L202 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52
[2021-02-19 19:16:00,888 WARN L202 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 41
[2021-02-19 19:16:01,260 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 42
[2021-02-19 19:16:01,758 WARN L202 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46
[2021-02-19 19:16:02,014 WARN L202 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49
[2021-02-19 19:16:02,235 WARN L202 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44
[2021-02-19 19:16:02,491 WARN L202 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 45
[2021-02-19 19:16:02,905 WARN L202 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49
[2021-02-19 19:16:03,256 WARN L202 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50
[2021-02-19 19:16:03,577 WARN L202 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48
[2021-02-19 19:16:10,486 WARN L202 SmtUtils]: Spent 6.62 s on a formula simplification. DAG size of input: 94 DAG size of output: 75
[2021-02-19 19:16:10,790 WARN L202 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 33
[2021-02-19 19:16:11,137 WARN L202 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38
[2021-02-19 19:16:36,028 WARN L202 SmtUtils]: Spent 24.57 s on a formula simplification. DAG size of input: 101 DAG size of output: 76
[2021-02-19 19:16:47,410 WARN L202 SmtUtils]: Spent 11.22 s on a formula simplification. DAG size of input: 198 DAG size of output: 119
[2021-02-19 19:16:48,312 WARN L202 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64
[2021-02-19 19:16:48,586 WARN L202 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 30
[2021-02-19 19:16:49,029 WARN L202 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 22
[2021-02-19 19:16:49,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:16:49,320 INFO L93 Difference]: Finished difference Result 2542 states and 8388 transitions.
[2021-02-19 19:16:49,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states.
[2021-02-19 19:16:49,323 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:16:49,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:16:49,327 INFO L225 Difference]: With dead ends: 2542
[2021-02-19 19:16:49,328 INFO L226 Difference]: Without dead ends: 2512
[2021-02-19 19:16:49,328 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 53.9s TimeCoverageRelationStatistics Valid=434, Invalid=2116, Unknown=0, NotChecked=0, Total=2550
[2021-02-19 19:16:49,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2512 states.
[2021-02-19 19:16:49,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2512 to 1756.
[2021-02-19 19:16:49,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1756 states, 1755 states have (on average 3.3914529914529914) internal successors, (5952), 1755 states have internal predecessors, (5952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:16:49,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1756 states to 1756 states and 5952 transitions.
[2021-02-19 19:16:49,350 INFO L78 Accepts]: Start accepts. Automaton has 1756 states and 5952 transitions. Word has length 26
[2021-02-19 19:16:49,351 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:16:49,351 INFO L480 AbstractCegarLoop]: Abstraction has 1756 states and 5952 transitions.
[2021-02-19 19:16:49,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:16:49,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1756 states and 5952 transitions.
[2021-02-19 19:16:49,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:16:49,353 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:16:49,353 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:16:49,554 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2390,83 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:16:49,554 INFO L428 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:16:49,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:16:49,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1245974955, now seen corresponding path program 54 times
[2021-02-19 19:16:49,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:16:49,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942790633]
[2021-02-19 19:16:49,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:16:49,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:16:50,034 WARN L202 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31
[2021-02-19 19:16:50,163 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 20
[2021-02-19 19:16:50,357 WARN L202 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 26
[2021-02-19 19:16:50,579 WARN L202 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 32
[2021-02-19 19:16:50,724 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 38
[2021-02-19 19:16:51,073 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:16:51,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942790633]
[2021-02-19 19:16:51,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552429639]
[2021-02-19 19:16:51,074 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:16:51,096 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2021-02-19 19:16:51,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:16:51,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-02-19 19:16:51,097 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:16:51,781 WARN L202 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 52
[2021-02-19 19:16:51,923 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:16:51,934 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:16:52,024 INFO L354 Elim1Store]: treesize reduction 14, result has 48.1 percent of original size
[2021-02-19 19:16:52,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 31
[2021-02-19 19:16:52,029 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:16:52,041 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:16:52,054 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:16:52,182 INFO L354 Elim1Store]: treesize reduction 20, result has 25.9 percent of original size
[2021-02-19 19:16:52,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 25
[2021-02-19 19:16:52,187 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:16:52,197 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:16:52,208 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:16:52,302 INFO L354 Elim1Store]: treesize reduction 14, result has 48.1 percent of original size
[2021-02-19 19:16:52,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 28
[2021-02-19 19:16:52,318 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:16:52,329 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:16:52,340 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:16:52,423 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size
[2021-02-19 19:16:52,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 28
[2021-02-19 19:16:52,428 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:16:52,440 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:16:52,455 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:16:52,501 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size
[2021-02-19 19:16:52,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1
[2021-02-19 19:16:52,505 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:16:52,517 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:16:52,530 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:16:52,630 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size
[2021-02-19 19:16:52,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 28
[2021-02-19 19:16:52,636 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-02-19 19:16:52,648 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:16:52,661 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:16:52,705 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size
[2021-02-19 19:16:52,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 1
[2021-02-19 19:16:52,709 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-02-19 19:16:52,722 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:16:52,736 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:16:52,832 INFO L354 Elim1Store]: treesize reduction 19, result has 29.6 percent of original size
[2021-02-19 19:16:52,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 26
[2021-02-19 19:16:52,837 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-02-19 19:16:52,849 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:16:52,864 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:16:52,913 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size
[2021-02-19 19:16:52,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1
[2021-02-19 19:16:52,917 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-02-19 19:16:52,929 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:16:52,942 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:16:52,985 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size
[2021-02-19 19:16:52,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 1
[2021-02-19 19:16:52,989 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-02-19 19:16:53,003 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:16:53,017 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:16:53,107 INFO L354 Elim1Store]: treesize reduction 18, result has 33.3 percent of original size
[2021-02-19 19:16:53,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 24
[2021-02-19 19:16:53,114 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-02-19 19:16:53,127 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:16:53,140 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:16:53,186 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size
[2021-02-19 19:16:53,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1
[2021-02-19 19:16:53,190 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-02-19 19:16:53,202 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:16:53,215 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:16:53,310 INFO L354 Elim1Store]: treesize reduction 18, result has 33.3 percent of original size
[2021-02-19 19:16:53,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 24
[2021-02-19 19:16:53,318 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-02-19 19:16:53,329 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:16:53,341 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:16:53,428 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:16:53,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 39
[2021-02-19 19:16:53,455 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-02-19 19:16:53,467 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:16:53,479 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:16:53,563 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size
[2021-02-19 19:16:53,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 25
[2021-02-19 19:16:53,570 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-02-19 19:16:53,580 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:16:53,590 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:16:53,604 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size
[2021-02-19 19:16:53,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1
[2021-02-19 19:16:53,607 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-02-19 19:16:53,986 WARN L202 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 22
[2021-02-19 19:16:53,987 INFO L628 ElimStorePlain]: treesize reduction 125, result has 42.7 percent of original size
[2021-02-19 19:16:53,990 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts.
[2021-02-19 19:16:53,990 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:705, output treesize:93
[2021-02-19 19:16:54,233 WARN L202 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 22
[2021-02-19 19:16:54,433 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:16:54,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:16:54,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19
[2021-02-19 19:16:54,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483374010]
[2021-02-19 19:16:54,434 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states
[2021-02-19 19:16:54,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:16:54,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2021-02-19 19:16:54,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380
[2021-02-19 19:16:54,435 INFO L87 Difference]: Start difference. First operand 1756 states and 5952 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:16:54,638 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 24
[2021-02-19 19:16:54,849 WARN L202 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 32
[2021-02-19 19:16:55,107 WARN L202 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39
[2021-02-19 19:16:55,338 WARN L202 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36
[2021-02-19 19:16:55,927 WARN L202 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55
[2021-02-19 19:16:56,356 WARN L202 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 45
[2021-02-19 19:16:56,663 WARN L202 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42
[2021-02-19 19:16:57,033 WARN L202 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44
[2021-02-19 19:16:57,356 WARN L202 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39
[2021-02-19 19:16:57,838 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 40
[2021-02-19 19:16:58,288 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 50
[2021-02-19 19:16:58,589 WARN L202 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 44
[2021-02-19 19:16:59,328 WARN L202 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56
[2021-02-19 19:16:59,753 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54
[2021-02-19 19:17:00,083 WARN L202 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47
[2021-02-19 19:17:00,510 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51
[2021-02-19 19:17:01,239 WARN L202 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 56
[2021-02-19 19:17:01,581 WARN L202 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46
[2021-02-19 19:17:02,127 WARN L202 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56
[2021-02-19 19:17:02,553 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 32
[2021-02-19 19:17:03,400 WARN L202 SmtUtils]: Spent 735.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61
[2021-02-19 19:17:04,350 WARN L202 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 56
[2021-02-19 19:17:05,843 WARN L202 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 113 DAG size of output: 82
[2021-02-19 19:17:06,324 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 32
[2021-02-19 19:17:07,893 WARN L202 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 116 DAG size of output: 79
[2021-02-19 19:17:08,216 WARN L202 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32
[2021-02-19 19:17:08,712 WARN L202 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44
[2021-02-19 19:17:09,279 WARN L202 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 32
[2021-02-19 19:17:10,352 WARN L202 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71
[2021-02-19 19:17:10,815 WARN L202 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47
[2021-02-19 19:17:11,271 WARN L202 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48
[2021-02-19 19:17:11,868 WARN L202 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 33
[2021-02-19 19:17:12,098 WARN L202 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 18
[2021-02-19 19:17:12,992 WARN L202 SmtUtils]: Spent 837.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 37
[2021-02-19 19:17:13,604 WARN L202 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 35
[2021-02-19 19:17:14,390 WARN L202 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64
[2021-02-19 19:17:14,777 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46
[2021-02-19 19:17:15,812 WARN L202 SmtUtils]: Spent 927.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 40
[2021-02-19 19:17:16,112 WARN L202 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 26
[2021-02-19 19:17:16,595 WARN L202 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31
[2021-02-19 19:17:17,285 WARN L202 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 35
[2021-02-19 19:17:17,833 WARN L202 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54
[2021-02-19 19:17:18,488 WARN L202 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37
[2021-02-19 19:17:19,047 WARN L202 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 35
[2021-02-19 19:17:19,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:17:19,246 INFO L93 Difference]: Finished difference Result 3177 states and 10177 transitions.
[2021-02-19 19:17:19,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states.
[2021-02-19 19:17:19,249 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:17:19,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:17:19,254 INFO L225 Difference]: With dead ends: 3177
[2021-02-19 19:17:19,254 INFO L226 Difference]: Without dead ends: 3141
[2021-02-19 19:17:19,254 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1471 ImplicationChecksByTransitivity, 24.2s TimeCoverageRelationStatistics Valid=1010, Invalid=3682, Unknown=0, NotChecked=0, Total=4692
[2021-02-19 19:17:19,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3141 states.
[2021-02-19 19:17:19,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3141 to 1809.
[2021-02-19 19:17:19,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 3.39712389380531) internal successors, (6142), 1808 states have internal predecessors, (6142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:17:19,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 6142 transitions.
[2021-02-19 19:17:19,281 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 6142 transitions. Word has length 26
[2021-02-19 19:17:19,281 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:17:19,281 INFO L480 AbstractCegarLoop]: Abstraction has 1809 states and 6142 transitions.
[2021-02-19 19:17:19,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:17:19,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 6142 transitions.
[2021-02-19 19:17:19,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:17:19,284 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:17:19,284 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:17:19,484 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2462,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:17:19,484 INFO L428 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:17:19,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:17:19,485 INFO L82 PathProgramCache]: Analyzing trace with hash -505799277, now seen corresponding path program 30 times
[2021-02-19 19:17:19,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:17:19,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405692582]
[2021-02-19 19:17:19,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:17:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:17:19,948 WARN L202 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 31
[2021-02-19 19:17:20,215 WARN L202 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36
[2021-02-19 19:17:20,474 WARN L202 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32
[2021-02-19 19:17:20,668 WARN L202 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 21
[2021-02-19 19:17:20,791 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:17:20,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405692582]
[2021-02-19 19:17:20,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825139554]
[2021-02-19 19:17:20,792 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:17:20,819 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2021-02-19 19:17:20,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-02-19 19:17:20,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-02-19 19:17:20,820 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:17:21,600 WARN L202 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 42
[2021-02-19 19:17:22,450 WARN L202 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 56
[2021-02-19 19:17:22,821 WARN L202 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 53
[2021-02-19 19:17:23,795 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:23,887 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size
[2021-02-19 19:17:23,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25
[2021-02-19 19:17:23,913 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:17:23,935 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:24,021 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size
[2021-02-19 19:17:24,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28
[2021-02-19 19:17:24,028 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:17:24,699 WARN L202 SmtUtils]: Spent 670.00 ms on a formula simplification that was a NOOP. DAG size: 74
[2021-02-19 19:17:24,700 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:17:24,724 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:24,790 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:17:24,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35
[2021-02-19 19:17:24,795 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:17:24,818 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:24,878 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size
[2021-02-19 19:17:24,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24
[2021-02-19 19:17:24,884 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:17:25,541 WARN L202 SmtUtils]: Spent 656.00 ms on a formula simplification that was a NOOP. DAG size: 70
[2021-02-19 19:17:25,542 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:17:25,568 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:25,626 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:17:25,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35
[2021-02-19 19:17:25,635 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:17:25,655 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:25,723 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size
[2021-02-19 19:17:25,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 28
[2021-02-19 19:17:25,741 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-02-19 19:17:26,354 WARN L202 SmtUtils]: Spent 612.00 ms on a formula simplification that was a NOOP. DAG size: 65
[2021-02-19 19:17:26,355 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:17:26,375 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:26,428 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:17:26,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26
[2021-02-19 19:17:26,459 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-02-19 19:17:26,480 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:26,542 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size
[2021-02-19 19:17:26,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21
[2021-02-19 19:17:26,549 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-02-19 19:17:27,147 WARN L202 SmtUtils]: Spent 597.00 ms on a formula simplification that was a NOOP. DAG size: 58
[2021-02-19 19:17:27,149 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:17:27,212 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-02-19 19:17:27,212 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:349, output treesize:311
[2021-02-19 19:17:28,328 WARN L202 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 47 DAG size of output: 47
[2021-02-19 19:17:28,716 WARN L202 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 20
[2021-02-19 19:17:28,758 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:17:28,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:17:28,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20
[2021-02-19 19:17:28,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572063538]
[2021-02-19 19:17:28,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states
[2021-02-19 19:17:28,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:17:28,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2021-02-19 19:17:28,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380
[2021-02-19 19:17:28,759 INFO L87 Difference]: Start difference. First operand 1809 states and 6142 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:17:29,200 WARN L202 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 29
[2021-02-19 19:17:30,027 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39
[2021-02-19 19:17:30,537 WARN L202 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 30
[2021-02-19 19:17:31,002 WARN L202 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 45
[2021-02-19 19:17:31,628 WARN L202 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 34
[2021-02-19 19:17:31,862 WARN L202 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 26
[2021-02-19 19:17:32,448 WARN L202 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39
[2021-02-19 19:17:32,646 WARN L202 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 40
[2021-02-19 19:17:33,626 WARN L202 SmtUtils]: Spent 776.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59
[2021-02-19 19:17:34,694 WARN L202 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 47
[2021-02-19 19:17:36,382 WARN L202 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 108 DAG size of output: 61
[2021-02-19 19:17:36,738 WARN L202 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 59
[2021-02-19 19:17:37,840 WARN L202 SmtUtils]: Spent 827.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61
[2021-02-19 19:17:38,703 WARN L202 SmtUtils]: Spent 512.00 ms on a formula simplification that was a NOOP. DAG size: 51
[2021-02-19 19:17:39,765 WARN L202 SmtUtils]: Spent 946.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 83
[2021-02-19 19:17:40,582 WARN L202 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61
[2021-02-19 19:17:41,466 WARN L202 SmtUtils]: Spent 773.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65
[2021-02-19 19:17:42,590 WARN L202 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 79
[2021-02-19 19:17:43,870 WARN L202 SmtUtils]: Spent 999.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 85
[2021-02-19 19:17:44,846 WARN L202 SmtUtils]: Spent 719.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67
[2021-02-19 19:17:46,759 WARN L202 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 57 DAG size of output: 30
[2021-02-19 19:17:48,257 WARN L202 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 85 DAG size of output: 42
[2021-02-19 19:17:48,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-19 19:17:48,541 INFO L93 Difference]: Finished difference Result 2468 states and 8061 transitions.
[2021-02-19 19:17:48,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states.
[2021-02-19 19:17:48,544 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2021-02-19 19:17:48,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-19 19:17:48,548 INFO L225 Difference]: With dead ends: 2468
[2021-02-19 19:17:48,548 INFO L226 Difference]: Without dead ends: 2438
[2021-02-19 19:17:48,548 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=275, Invalid=1795, Unknown=0, NotChecked=0, Total=2070
[2021-02-19 19:17:48,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2438 states.
[2021-02-19 19:17:48,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2438 to 1811.
[2021-02-19 19:17:48,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1811 states, 1810 states have (on average 3.3977900552486187) internal successors, (6150), 1810 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:17:48,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 6150 transitions.
[2021-02-19 19:17:48,571 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 6150 transitions. Word has length 26
[2021-02-19 19:17:48,571 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-19 19:17:48,571 INFO L480 AbstractCegarLoop]: Abstraction has 1811 states and 6150 transitions.
[2021-02-19 19:17:48,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:17:48,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 6150 transitions.
[2021-02-19 19:17:48,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-19 19:17:48,573 INFO L498 BasicCegarLoop]: Found error trace
[2021-02-19 19:17:48,573 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-19 19:17:48,773 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2487
[2021-02-19 19:17:48,774 INFO L428 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-02-19 19:17:48,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-19 19:17:48,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1967245213, now seen corresponding path program 31 times
[2021-02-19 19:17:48,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-19 19:17:48,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550153325]
[2021-02-19 19:17:48,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-19 19:17:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:17:49,354 WARN L202 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41
[2021-02-19 19:17:49,878 WARN L202 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36
[2021-02-19 19:17:50,357 WARN L202 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 31
[2021-02-19 19:17:50,714 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25
[2021-02-19 19:17:50,827 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:17:50,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550153325]
[2021-02-19 19:17:50,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383035391]
[2021-02-19 19:17:50,828 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-02-19 19:17:50,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-19 19:17:50,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-02-19 19:17:50,848 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-02-19 19:17:51,393 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 36
[2021-02-19 19:17:51,651 WARN L202 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 41
[2021-02-19 19:17:51,741 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:51,744 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:51,763 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:17:51,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 22
[2021-02-19 19:17:51,767 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2021-02-19 19:17:51,783 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:51,786 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:51,818 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:17:51,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 28
[2021-02-19 19:17:51,835 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2021-02-19 19:17:51,850 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:51,853 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:51,871 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:17:51,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 27
[2021-02-19 19:17:51,875 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2021-02-19 19:17:51,891 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:51,894 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:51,926 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:17:51,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 31
[2021-02-19 19:17:51,931 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2021-02-19 19:17:51,948 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:51,953 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:51,972 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:17:51,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 24
[2021-02-19 19:17:51,976 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2021-02-19 19:17:51,991 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:51,994 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:52,031 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:17:52,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 24
[2021-02-19 19:17:52,037 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2021-02-19 19:17:52,054 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:52,057 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:52,090 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:17:52,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 30
[2021-02-19 19:17:52,096 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2021-02-19 19:17:52,112 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:52,116 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:52,139 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:17:52,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 25
[2021-02-19 19:17:52,143 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2021-02-19 19:17:52,161 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:52,165 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:52,191 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:17:52,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 25
[2021-02-19 19:17:52,196 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts.
[2021-02-19 19:17:52,214 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:52,218 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:52,239 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:17:52,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 30
[2021-02-19 19:17:52,243 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts.
[2021-02-19 19:17:52,261 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:52,264 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:52,286 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:17:52,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 22
[2021-02-19 19:17:52,290 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts.
[2021-02-19 19:17:52,312 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:52,318 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:52,360 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:17:52,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 24
[2021-02-19 19:17:52,378 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts.
[2021-02-19 19:17:52,399 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:52,403 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:52,446 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:17:52,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 23
[2021-02-19 19:17:52,454 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts.
[2021-02-19 19:17:52,474 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:52,479 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:52,506 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-02-19 19:17:52,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 27
[2021-02-19 19:17:52,510 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts.
[2021-02-19 19:17:52,528 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:52,532 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:52,567 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:17:52,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 31
[2021-02-19 19:17:52,577 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts.
[2021-02-19 19:17:52,594 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:52,598 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-02-19 19:17:52,619 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-02-19 19:17:52,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 23
[2021-02-19 19:17:52,627 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts.
[2021-02-19 19:17:53,027 WARN L202 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 35
[2021-02-19 19:17:53,028 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-19 19:17:53,031 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts.
[2021-02-19 19:17:53,031 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:865, output treesize:221
[2021-02-19 19:17:53,473 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 35
[2021-02-19 19:17:53,861 WARN L202 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 21
[2021-02-19 19:17:53,918 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-19 19:17:53,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-02-19 19:17:53,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19
[2021-02-19 19:17:53,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932433335]
[2021-02-19 19:17:53,919 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-02-19 19:17:53,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-19 19:17:53,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-02-19 19:17:53,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342
[2021-02-19 19:17:53,919 INFO L87 Difference]: Start difference. First operand 1811 states and 6150 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-02-19 19:17:54,340 WARN L202 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 28
[2021-02-19 19:17:55,232 WARN L202 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51
[2021-02-19 19:17:55,670 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41
[2021-02-19 19:17:56,016 WARN L202 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 30
[2021-02-19 19:17:57,569 WARN L202 SmtUtils]: Spent 867.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 44
[2021-02-19 19:17:57,828 WARN L202 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 40
[2021-02-19 19:17:58,434 WARN L202 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 29
[2021-02-19 19:17:59,144 WARN L202 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56
[2021-02-19 19:18:00,118 WARN L202 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47
[2021-02-19 19:18:00,960 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 26
[2021-02-19 19:18:01,359 WARN L202 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 44
[2021-02-19 19:18:02,414 WARN L202 SmtUtils]: Spent 827.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43
[2021-02-19 19:18:03,205 WARN L202 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63
[2021-02-19 19:18:03,792 WARN L202 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 38
[2021-02-19 19:18:04,889 WARN L202 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 39
[2021-02-19 19:18:06,297 WARN L202 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 67 DAG size of output: 65
Received shutdown request...
[2021-02-19 19:18:06,655 WARN L219 SmtUtils]: Removed 8 from assertion stack
[2021-02-19 19:18:06,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2021-02-19 19:18:06,855 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2554
[2021-02-19 19:18:06,856 WARN L545 AbstractCegarLoop]: Verification canceled
[2021-02-19 19:18:06,859 WARN L224 ceAbstractionStarter]: Timeout
[2021-02-19 19:18:06,859 INFO L202 PluginConnector]: Adding new model min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 07:18:06 BasicIcfg
[2021-02-19 19:18:06,859 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-02-19 19:18:06,860 INFO L168 Benchmark]: Toolchain (without parser) took 517404.74 ms. Allocated memory was 255.9 MB in the beginning and 761.3 MB in the end (delta: 505.4 MB). Free memory was 236.9 MB in the beginning and 592.8 MB in the end (delta: -355.8 MB). Peak memory consumption was 149.6 MB. Max. memory is 16.0 GB.
[2021-02-19 19:18:06,860 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory was 238.2 MB in the beginning and 238.2 MB in the end (delta: 27.3 kB). There was no memory consumed. Max. memory is 16.0 GB.
[2021-02-19 19:18:06,860 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.59 ms. Allocated memory is still 255.9 MB. Free memory was 236.5 MB in the beginning and 235.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB.
[2021-02-19 19:18:06,860 INFO L168 Benchmark]: Boogie Preprocessor took 21.21 ms. Allocated memory is still 255.9 MB. Free memory was 235.1 MB in the beginning and 233.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB.
[2021-02-19 19:18:06,860 INFO L168 Benchmark]: RCFGBuilder took 274.57 ms. Allocated memory is still 255.9 MB. Free memory was 233.8 MB in the beginning and 234.8 MB in the end (delta: -1.0 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.0 GB.
[2021-02-19 19:18:06,860 INFO L168 Benchmark]: TraceAbstraction took 517078.04 ms. Allocated memory was 255.9 MB in the beginning and 761.3 MB in the end (delta: 505.4 MB). Free memory was 234.2 MB in the beginning and 592.8 MB in the end (delta: -358.6 MB). Peak memory consumption was 146.1 MB. Max. memory is 16.0 GB.
[2021-02-19 19:18:06,861 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory was 238.2 MB in the beginning and 238.2 MB in the end (delta: 27.3 kB). There was no memory consumed. Max. memory is 16.0 GB.
* Boogie Procedure Inliner took 21.59 ms. Allocated memory is still 255.9 MB. Free memory was 236.5 MB in the beginning and 235.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB.
* Boogie Preprocessor took 21.21 ms. Allocated memory is still 255.9 MB. Free memory was 235.1 MB in the beginning and 233.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB.
* RCFGBuilder took 274.57 ms. Allocated memory is still 255.9 MB. Free memory was 233.8 MB in the beginning and 234.8 MB in the end (delta: -1.0 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.0 GB.
* TraceAbstraction took 517078.04 ms. Allocated memory was 255.9 MB in the beginning and 761.3 MB in the end (delta: 505.4 MB). Free memory was 234.2 MB in the beginning and 592.8 MB in the end (delta: -358.6 MB). Peak memory consumption was 146.1 MB. Max. memory is 16.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction)
Unable to prove that assertion always holds (line 65). Cancelled while BasicCegarLoop was constructing difference of abstraction (1811states) and FLOYD_HOARE automaton (currently 24 states, 19 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 52 for 122ms..
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 4 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 516.9s, OverallIterations: 88, TraceHistogramMax: 2, AutomataDifference: 318.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3703 SDtfs, 18532 SDslu, 26879 SDs, 0 SdLazy, 49366 SolverSat, 3095 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 36.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4695 GetRequests, 1606 SyntacticMatches, 81 SemanticMatches, 3007 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36662 ImplicationChecksByTransitivity, 334.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1811occurred in iteration=87, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 87 MinimizatonAttempts, 64948 StatesRemovedByMinimization, 87 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 175.2s InterpolantComputationTime, 4310 NumberOfCodeBlocks, 4310 NumberOfCodeBlocksAsserted, 276 NumberOfCheckSat, 4137 ConstructedInterpolants, 96 QuantifiedInterpolants, 3114769 SizeOfPredicates, 463 NumberOfNonLiveVariables, 5570 ConjunctsInSsa, 1588 ConjunctsInUnsatCore, 173 InterpolantComputations, 3 PerfectInterpolantSequences, 107/986 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: Timeout
Completed graceful shutdown