/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-benchs/zonotope_3.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 07:09:12,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 07:09:12,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 07:09:12,925 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 07:09:12,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 07:09:12,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 07:09:12,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 07:09:12,967 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-01-31 07:09:12,990 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 07:09:12,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 07:09:12,991 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-31 07:09:12,991 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-31 07:09:12,992 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-31 07:09:12,992 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-31 07:09:12,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-31 07:09:12,993 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-31 07:09:12,993 INFO L138 SettingsManager]: * Use SBE=true [2022-01-31 07:09:12,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 07:09:12,994 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 07:09:12,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 07:09:12,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 07:09:12,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 07:09:12,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 07:09:12,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 07:09:12,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 07:09:12,994 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 07:09:12,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 07:09:12,994 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 07:09:12,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 07:09:12,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 07:09:12,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 07:09:12,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 07:09:12,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 07:09:12,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 07:09:12,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-31 07:09:12,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-31 07:09:12,996 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 07:09:12,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-31 07:09:12,996 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-31 07:09:12,997 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-31 07:09:12,997 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 07:09:12,997 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 07:09:13,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 07:09:13,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 07:09:13,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 07:09:13,213 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 07:09:13,224 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 07:09:13,225 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/zonotope_3.c.v+lhb-reducer.c [2022-01-31 07:09:13,280 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bae141f0/ac9f0ba93250457a814ad84a0886b983/FLAG07c072103 [2022-01-31 07:09:13,667 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 07:09:13,668 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/zonotope_3.c.v+lhb-reducer.c [2022-01-31 07:09:13,675 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bae141f0/ac9f0ba93250457a814ad84a0886b983/FLAG07c072103 [2022-01-31 07:09:13,685 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bae141f0/ac9f0ba93250457a814ad84a0886b983 [2022-01-31 07:09:13,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 07:09:13,688 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 07:09:13,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 07:09:13,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 07:09:13,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 07:09:13,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 07:09:13" (1/1) ... [2022-01-31 07:09:13,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66c3534f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:09:13, skipping insertion in model container [2022-01-31 07:09:13,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 07:09:13" (1/1) ... [2022-01-31 07:09:13,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 07:09:13,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 07:09:13,889 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/zonotope_3.c.v+lhb-reducer.c[12131,12144] [2022-01-31 07:09:13,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 07:09:13,902 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 07:09:13,934 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/zonotope_3.c.v+lhb-reducer.c[12131,12144] [2022-01-31 07:09:13,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 07:09:13,947 INFO L208 MainTranslator]: Completed translation [2022-01-31 07:09:13,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:09:13 WrapperNode [2022-01-31 07:09:13,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 07:09:13,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 07:09:13,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 07:09:13,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 07:09:13,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:09:13" (1/1) ... [2022-01-31 07:09:13,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:09:13" (1/1) ... [2022-01-31 07:09:13,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:09:13" (1/1) ... [2022-01-31 07:09:13,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:09:13" (1/1) ... [2022-01-31 07:09:14,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:09:13" (1/1) ... [2022-01-31 07:09:14,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:09:13" (1/1) ... [2022-01-31 07:09:14,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:09:13" (1/1) ... [2022-01-31 07:09:14,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 07:09:14,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 07:09:14,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 07:09:14,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 07:09:14,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:09:13" (1/1) ... [2022-01-31 07:09:14,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 07:09:14,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 07:09:14,036 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-31 07:09:14,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-31 07:09:14,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 07:09:14,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 07:09:14,076 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 07:09:14,076 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 07:09:14,076 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 07:09:14,076 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 07:09:14,076 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 07:09:14,076 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 07:09:14,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 07:09:14,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-01-31 07:09:14,077 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 07:09:14,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 07:09:14,077 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-01-31 07:09:14,077 INFO L130 BoogieDeclarations]: Found specification of procedure g [2022-01-31 07:09:14,077 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 07:09:14,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 07:09:14,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 07:09:14,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 07:09:14,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 07:09:14,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 07:09:14,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 07:09:14,157 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 07:09:14,158 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 07:09:14,389 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 07:09:14,406 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 07:09:14,406 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-31 07:09:14,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 07:09:14 BoogieIcfgContainer [2022-01-31 07:09:14,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 07:09:14,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 07:09:14,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 07:09:14,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 07:09:14,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 07:09:13" (1/3) ... [2022-01-31 07:09:14,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b996111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 07:09:14, skipping insertion in model container [2022-01-31 07:09:14,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:09:13" (2/3) ... [2022-01-31 07:09:14,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b996111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 07:09:14, skipping insertion in model container [2022-01-31 07:09:14,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 07:09:14" (3/3) ... [2022-01-31 07:09:14,423 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_3.c.v+lhb-reducer.c [2022-01-31 07:09:14,427 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-31 07:09:14,427 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 07:09:14,470 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 07:09:14,479 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-31 07:09:14,479 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 07:09:14,501 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 53 states have (on average 1.830188679245283) internal successors, (97), 54 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 07:09:14,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-31 07:09:14,507 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 07:09:14,508 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 07:09:14,508 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 07:09:14,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 07:09:14,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1348301876, now seen corresponding path program 1 times [2022-01-31 07:09:14,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 07:09:14,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512670621] [2022-01-31 07:09:14,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 07:09:14,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 07:09:14,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:09:14,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 07:09:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:09:15,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 07:09:15,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 07:09:15,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512670621] [2022-01-31 07:09:15,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512670621] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 07:09:15,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 07:09:15,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 07:09:15,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692806504] [2022-01-31 07:09:15,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 07:09:15,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 07:09:15,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 07:09:15,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 07:09:15,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-31 07:09:15,036 INFO L87 Difference]: Start difference. First operand has 59 states, 53 states have (on average 1.830188679245283) internal successors, (97), 54 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:09:15,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 07:09:15,267 INFO L93 Difference]: Finished difference Result 73 states and 115 transitions. [2022-01-31 07:09:15,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 07:09:15,269 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2022-01-31 07:09:15,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 07:09:15,274 INFO L225 Difference]: With dead ends: 73 [2022-01-31 07:09:15,274 INFO L226 Difference]: Without dead ends: 55 [2022-01-31 07:09:15,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-01-31 07:09:15,281 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 93 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 07:09:15,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 314 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 07:09:15,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-01-31 07:09:15,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-01-31 07:09:15,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 51 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:09:15,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2022-01-31 07:09:15,309 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 49 [2022-01-31 07:09:15,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 07:09:15,310 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2022-01-31 07:09:15,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:09:15,310 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2022-01-31 07:09:15,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-31 07:09:15,312 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 07:09:15,312 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 07:09:15,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 07:09:15,313 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 07:09:15,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 07:09:15,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1333197839, now seen corresponding path program 1 times [2022-01-31 07:09:15,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 07:09:15,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936489459] [2022-01-31 07:09:15,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 07:09:15,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 07:09:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:09:15,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 07:09:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:09:15,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 07:09:15,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 07:09:15,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936489459] [2022-01-31 07:09:15,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936489459] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 07:09:15,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 07:09:15,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 07:09:15,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858392668] [2022-01-31 07:09:15,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 07:09:15,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 07:09:15,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 07:09:15,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 07:09:15,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2022-01-31 07:09:15,664 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:09:15,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 07:09:15,783 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2022-01-31 07:09:15,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 07:09:15,783 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2022-01-31 07:09:15,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 07:09:15,788 INFO L225 Difference]: With dead ends: 68 [2022-01-31 07:09:15,788 INFO L226 Difference]: Without dead ends: 61 [2022-01-31 07:09:15,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2022-01-31 07:09:15,793 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 57 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 07:09:15,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 128 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 07:09:15,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-01-31 07:09:15,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2022-01-31 07:09:15,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 53 states have internal predecessors, (57), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:09:15,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2022-01-31 07:09:15,809 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 49 [2022-01-31 07:09:15,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 07:09:15,811 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2022-01-31 07:09:15,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:09:15,812 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2022-01-31 07:09:15,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-31 07:09:15,813 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 07:09:15,813 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 07:09:15,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 07:09:15,813 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 07:09:15,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 07:09:15,814 INFO L85 PathProgramCache]: Analyzing trace with hash -212880527, now seen corresponding path program 1 times [2022-01-31 07:09:15,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 07:09:15,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934344973] [2022-01-31 07:09:15,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 07:09:15,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 07:09:15,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:09:15,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 07:09:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:09:15,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 07:09:15,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 07:09:15,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934344973] [2022-01-31 07:09:15,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934344973] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 07:09:15,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 07:09:15,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 07:09:15,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552295076] [2022-01-31 07:09:15,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 07:09:15,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 07:09:15,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 07:09:15,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 07:09:15,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 07:09:15,976 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:09:16,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 07:09:16,054 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2022-01-31 07:09:16,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 07:09:16,055 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2022-01-31 07:09:16,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 07:09:16,055 INFO L225 Difference]: With dead ends: 71 [2022-01-31 07:09:16,055 INFO L226 Difference]: Without dead ends: 56 [2022-01-31 07:09:16,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 07:09:16,056 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 07:09:16,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 113 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 07:09:16,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-01-31 07:09:16,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-01-31 07:09:16,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 52 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:09:16,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2022-01-31 07:09:16,061 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 54 [2022-01-31 07:09:16,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 07:09:16,061 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2022-01-31 07:09:16,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:09:16,061 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2022-01-31 07:09:16,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-31 07:09:16,062 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 07:09:16,062 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 07:09:16,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 07:09:16,063 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 07:09:16,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 07:09:16,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1625529526, now seen corresponding path program 1 times [2022-01-31 07:09:16,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 07:09:16,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124444077] [2022-01-31 07:09:16,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 07:09:16,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 07:09:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:09:16,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 07:09:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:09:16,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 07:09:16,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 07:09:16,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124444077] [2022-01-31 07:09:16,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124444077] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 07:09:16,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358296076] [2022-01-31 07:09:16,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 07:09:16,342 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 07:09:16,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 07:09:16,343 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 07:09:16,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-31 07:09:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:09:16,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-31 07:09:16,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 07:09:16,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 07:09:16,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 07:09:16,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 07:09:16,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358296076] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 07:09:16,957 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 07:09:16,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 26 [2022-01-31 07:09:16,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623752446] [2022-01-31 07:09:16,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 07:09:16,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-31 07:09:16,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 07:09:16,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-31 07:09:16,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2022-01-31 07:09:16,959 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 26 states, 26 states have (on average 3.8846153846153846) internal successors, (101), 25 states have internal predecessors, (101), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:09:17,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 07:09:17,110 INFO L93 Difference]: Finished difference Result 123 states and 136 transitions. [2022-01-31 07:09:17,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-31 07:09:17,110 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.8846153846153846) internal successors, (101), 25 states have internal predecessors, (101), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2022-01-31 07:09:17,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 07:09:17,111 INFO L225 Difference]: With dead ends: 123 [2022-01-31 07:09:17,111 INFO L226 Difference]: Without dead ends: 116 [2022-01-31 07:09:17,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2022-01-31 07:09:17,112 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 196 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 07:09:17,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 170 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 07:09:17,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-01-31 07:09:17,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2022-01-31 07:09:17,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 112 states have (on average 1.0178571428571428) internal successors, (114), 112 states have internal predecessors, (114), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:09:17,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 117 transitions. [2022-01-31 07:09:17,119 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 117 transitions. Word has length 54 [2022-01-31 07:09:17,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 07:09:17,120 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 117 transitions. [2022-01-31 07:09:17,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.8846153846153846) internal successors, (101), 25 states have internal predecessors, (101), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:09:17,120 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 117 transitions. [2022-01-31 07:09:17,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-31 07:09:17,121 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 07:09:17,121 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 07:09:17,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-31 07:09:17,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 07:09:17,334 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 07:09:17,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 07:09:17,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1309853194, now seen corresponding path program 2 times [2022-01-31 07:09:17,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 07:09:17,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077910244] [2022-01-31 07:09:17,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 07:09:17,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 07:09:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:09:17,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 07:09:17,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:09:17,812 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 07:09:17,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 07:09:17,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077910244] [2022-01-31 07:09:17,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077910244] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 07:09:17,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556897442] [2022-01-31 07:09:17,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 07:09:17,815 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 07:09:17,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 07:09:17,818 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 07:09:17,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-31 07:09:18,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 07:09:18,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 07:09:18,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 1410 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-31 07:09:18,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 07:09:18,311 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 07:09:18,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 07:09:19,097 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 07:09:19,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556897442] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 07:09:19,098 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 07:09:19,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 50 [2022-01-31 07:09:19,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920101045] [2022-01-31 07:09:19,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 07:09:19,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-31 07:09:19,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 07:09:19,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-31 07:09:19,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2022-01-31 07:09:19,100 INFO L87 Difference]: Start difference. First operand 116 states and 117 transitions. Second operand has 50 states, 50 states have (on average 4.42) internal successors, (221), 49 states have internal predecessors, (221), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:09:19,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 07:09:19,297 INFO L93 Difference]: Finished difference Result 243 states and 268 transitions. [2022-01-31 07:09:19,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-31 07:09:19,297 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 4.42) internal successors, (221), 49 states have internal predecessors, (221), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 114 [2022-01-31 07:09:19,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 07:09:19,299 INFO L225 Difference]: With dead ends: 243 [2022-01-31 07:09:19,299 INFO L226 Difference]: Without dead ends: 236 [2022-01-31 07:09:19,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2022-01-31 07:09:19,300 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 359 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 07:09:19,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 278 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 07:09:19,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-01-31 07:09:19,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2022-01-31 07:09:19,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 232 states have (on average 1.0086206896551724) internal successors, (234), 232 states have internal predecessors, (234), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:09:19,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 237 transitions. [2022-01-31 07:09:19,311 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 237 transitions. Word has length 114 [2022-01-31 07:09:19,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 07:09:19,311 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 237 transitions. [2022-01-31 07:09:19,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 4.42) internal successors, (221), 49 states have internal predecessors, (221), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:09:19,312 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 237 transitions. [2022-01-31 07:09:19,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-01-31 07:09:19,313 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 07:09:19,313 INFO L514 BasicCegarLoop]: trace histogram [38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 07:09:19,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-31 07:09:19,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 07:09:19,531 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 07:09:19,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 07:09:19,532 INFO L85 PathProgramCache]: Analyzing trace with hash -212577162, now seen corresponding path program 3 times [2022-01-31 07:09:19,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 07:09:19,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527959698] [2022-01-31 07:09:19,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 07:09:19,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 07:09:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:09:20,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 07:09:20,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:09:20,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 07:09:20,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 07:09:20,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527959698] [2022-01-31 07:09:20,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527959698] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 07:09:20,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274143790] [2022-01-31 07:09:20,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 07:09:20,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 07:09:20,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 07:09:20,534 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 07:09:20,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-31 07:09:20,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 38 check-sat command(s) [2022-01-31 07:09:20,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 07:09:20,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 2418 conjuncts, 48 conjunts are in the unsatisfiable core [2022-01-31 07:09:20,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 07:09:21,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 07:09:21,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 07:09:23,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 07:09:23,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274143790] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 07:09:23,805 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 07:09:23,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49, 49] total 98 [2022-01-31 07:09:23,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235703628] [2022-01-31 07:09:23,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 07:09:23,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-01-31 07:09:23,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 07:09:23,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-01-31 07:09:23,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506 [2022-01-31 07:09:23,813 INFO L87 Difference]: Start difference. First operand 236 states and 237 transitions. Second operand has 98 states, 98 states have (on average 4.704081632653061) internal successors, (461), 97 states have internal predecessors, (461), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:09:24,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 07:09:24,229 INFO L93 Difference]: Finished difference Result 483 states and 532 transitions. [2022-01-31 07:09:24,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-01-31 07:09:24,230 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 4.704081632653061) internal successors, (461), 97 states have internal predecessors, (461), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 234 [2022-01-31 07:09:24,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 07:09:24,232 INFO L225 Difference]: With dead ends: 483 [2022-01-31 07:09:24,232 INFO L226 Difference]: Without dead ends: 476 [2022-01-31 07:09:24,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506 [2022-01-31 07:09:24,236 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 635 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 07:09:24,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [635 Valid, 420 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 07:09:24,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2022-01-31 07:09:24,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 476. [2022-01-31 07:09:24,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 472 states have (on average 1.0042372881355932) internal successors, (474), 472 states have internal predecessors, (474), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:09:24,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 477 transitions. [2022-01-31 07:09:24,265 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 477 transitions. Word has length 234 [2022-01-31 07:09:24,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 07:09:24,265 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 477 transitions. [2022-01-31 07:09:24,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 4.704081632653061) internal successors, (461), 97 states have internal predecessors, (461), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:09:24,265 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 477 transitions. [2022-01-31 07:09:24,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2022-01-31 07:09:24,279 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 07:09:24,280 INFO L514 BasicCegarLoop]: trace histogram [86, 85, 85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 07:09:24,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-31 07:09:24,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 07:09:24,500 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 07:09:24,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 07:09:24,500 INFO L85 PathProgramCache]: Analyzing trace with hash 405932406, now seen corresponding path program 4 times [2022-01-31 07:09:24,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 07:09:24,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001557302] [2022-01-31 07:09:24,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 07:09:24,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 07:09:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:09:27,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 07:09:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:09:27,543 INFO L134 CoverageAnalysis]: Checked inductivity of 18020 backedges. 0 proven. 18020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 07:09:27,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 07:09:27,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001557302] [2022-01-31 07:09:27,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001557302] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 07:09:27,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800226858] [2022-01-31 07:09:27,544 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 07:09:27,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 07:09:27,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 07:09:27,545 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 07:09:27,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-31 07:09:28,161 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 07:09:28,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 07:09:28,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 4434 conjuncts, 96 conjunts are in the unsatisfiable core [2022-01-31 07:09:28,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 07:09:28,854 INFO L134 CoverageAnalysis]: Checked inductivity of 18020 backedges. 0 proven. 18020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 07:09:28,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 07:09:36,962 INFO L134 CoverageAnalysis]: Checked inductivity of 18020 backedges. 0 proven. 18020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 07:09:36,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800226858] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 07:09:36,962 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 07:09:36,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 97, 97] total 194 [2022-01-31 07:09:36,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591247032] [2022-01-31 07:09:36,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 07:09:36,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 194 states [2022-01-31 07:09:36,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 07:09:36,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2022-01-31 07:09:36,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18530, Invalid=18912, Unknown=0, NotChecked=0, Total=37442 [2022-01-31 07:09:36,973 INFO L87 Difference]: Start difference. First operand 476 states and 477 transitions. Second operand has 194 states, 194 states have (on average 4.850515463917525) internal successors, (941), 193 states have internal predecessors, (941), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:09:38,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 07:09:38,462 INFO L93 Difference]: Finished difference Result 963 states and 1060 transitions. [2022-01-31 07:09:38,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2022-01-31 07:09:38,463 INFO L78 Accepts]: Start accepts. Automaton has has 194 states, 194 states have (on average 4.850515463917525) internal successors, (941), 193 states have internal predecessors, (941), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 474 [2022-01-31 07:09:38,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 07:09:38,466 INFO L225 Difference]: With dead ends: 963 [2022-01-31 07:09:38,466 INFO L226 Difference]: Without dead ends: 956 [2022-01-31 07:09:38,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1046 GetRequests, 854 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=18530, Invalid=18912, Unknown=0, NotChecked=0, Total=37442 [2022-01-31 07:09:38,469 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 1496 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 07:09:38,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1496 Valid, 697 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 07:09:38,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2022-01-31 07:09:38,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 956. [2022-01-31 07:09:38,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 952 states have (on average 1.0021008403361344) internal successors, (954), 952 states have internal predecessors, (954), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:09:38,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 957 transitions. [2022-01-31 07:09:38,487 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 957 transitions. Word has length 474 [2022-01-31 07:09:38,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 07:09:38,488 INFO L470 AbstractCegarLoop]: Abstraction has 956 states and 957 transitions. [2022-01-31 07:09:38,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 194 states, 194 states have (on average 4.850515463917525) internal successors, (941), 193 states have internal predecessors, (941), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:09:38,488 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 957 transitions. [2022-01-31 07:09:38,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 955 [2022-01-31 07:09:38,503 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 07:09:38,504 INFO L514 BasicCegarLoop]: trace histogram [182, 181, 181, 181, 181, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 07:09:38,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-31 07:09:38,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 07:09:38,722 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 07:09:38,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 07:09:38,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1345024886, now seen corresponding path program 5 times [2022-01-31 07:09:38,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 07:09:38,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889519502] [2022-01-31 07:09:38,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 07:09:38,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 07:09:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:09:48,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 07:09:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:09:48,539 INFO L134 CoverageAnalysis]: Checked inductivity of 81812 backedges. 0 proven. 81812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 07:09:48,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 07:09:48,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889519502] [2022-01-31 07:09:48,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889519502] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 07:09:48,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372221791] [2022-01-31 07:09:48,539 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 07:09:48,539 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 07:09:48,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 07:09:48,540 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 07:09:48,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-31 07:09:51,335 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 182 check-sat command(s) [2022-01-31 07:09:51,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 07:09:51,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 8466 conjuncts, 192 conjunts are in the unsatisfiable core [2022-01-31 07:09:51,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 07:09:52,756 INFO L134 CoverageAnalysis]: Checked inductivity of 81812 backedges. 0 proven. 81812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 07:09:52,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 07:10:15,833 INFO L134 CoverageAnalysis]: Checked inductivity of 81812 backedges. 0 proven. 81812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 07:10:15,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372221791] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 07:10:15,838 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 07:10:15,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [194, 193, 193] total 386 [2022-01-31 07:10:15,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652524800] [2022-01-31 07:10:15,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 07:10:15,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 386 states [2022-01-31 07:10:15,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 07:10:15,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 386 interpolants. [2022-01-31 07:10:15,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73922, Invalid=74688, Unknown=0, NotChecked=0, Total=148610 [2022-01-31 07:10:15,885 INFO L87 Difference]: Start difference. First operand 956 states and 957 transitions. Second operand has 386 states, 386 states have (on average 4.924870466321243) internal successors, (1901), 385 states have internal predecessors, (1901), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:10:24,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 07:10:24,570 INFO L93 Difference]: Finished difference Result 1923 states and 2116 transitions. [2022-01-31 07:10:24,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 385 states. [2022-01-31 07:10:24,571 INFO L78 Accepts]: Start accepts. Automaton has has 386 states, 386 states have (on average 4.924870466321243) internal successors, (1901), 385 states have internal predecessors, (1901), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 954 [2022-01-31 07:10:24,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 07:10:24,576 INFO L225 Difference]: With dead ends: 1923 [2022-01-31 07:10:24,576 INFO L226 Difference]: Without dead ends: 1916 [2022-01-31 07:10:24,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2102 GetRequests, 1718 SyntacticMatches, 0 SemanticMatches, 384 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 30.6s TimeCoverageRelationStatistics Valid=73922, Invalid=74688, Unknown=0, NotChecked=0, Total=148610 [2022-01-31 07:10:24,584 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 2238 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2238 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 07:10:24,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2238 Valid, 1319 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [442 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 07:10:24,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2022-01-31 07:10:24,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1916. [2022-01-31 07:10:24,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1916 states, 1912 states have (on average 1.0010460251046025) internal successors, (1914), 1912 states have internal predecessors, (1914), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:10:24,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 1917 transitions. [2022-01-31 07:10:24,618 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 1917 transitions. Word has length 954 [2022-01-31 07:10:24,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 07:10:24,619 INFO L470 AbstractCegarLoop]: Abstraction has 1916 states and 1917 transitions. [2022-01-31 07:10:24,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 386 states, 386 states have (on average 4.924870466321243) internal successors, (1901), 385 states have internal predecessors, (1901), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:10:24,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 1917 transitions. [2022-01-31 07:10:24,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1915 [2022-01-31 07:10:24,643 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 07:10:24,643 INFO L514 BasicCegarLoop]: trace histogram [374, 373, 373, 373, 373, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 07:10:24,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-31 07:10:24,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 07:10:24,848 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 07:10:24,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 07:10:24,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1458157706, now seen corresponding path program 6 times [2022-01-31 07:10:24,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 07:10:24,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661738422] [2022-01-31 07:10:24,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 07:10:24,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 07:10:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:11:07,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 07:11:07,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:11:07,737 INFO L134 CoverageAnalysis]: Checked inductivity of 347636 backedges. 0 proven. 347636 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 07:11:07,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 07:11:07,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661738422] [2022-01-31 07:11:07,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661738422] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 07:11:07,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355962694] [2022-01-31 07:11:07,738 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 07:11:07,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 07:11:07,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 07:11:07,746 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 07:11:07,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-31 07:11:22,442 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 374 check-sat command(s) [2022-01-31 07:11:22,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 07:11:22,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 16530 conjuncts, 384 conjunts are in the unsatisfiable core [2022-01-31 07:11:22,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 07:11:25,444 INFO L134 CoverageAnalysis]: Checked inductivity of 347636 backedges. 0 proven. 347636 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 07:11:25,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 07:13:04,633 INFO L134 CoverageAnalysis]: Checked inductivity of 347636 backedges. 0 proven. 347636 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 07:13:04,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355962694] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 07:13:04,633 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 07:13:04,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [386, 385, 385] total 770 [2022-01-31 07:13:04,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283865465] [2022-01-31 07:13:04,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 07:13:04,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 770 states [2022-01-31 07:13:04,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 07:13:04,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 770 interpolants. [2022-01-31 07:13:04,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295298, Invalid=296832, Unknown=0, NotChecked=0, Total=592130 [2022-01-31 07:13:04,696 INFO L87 Difference]: Start difference. First operand 1916 states and 1917 transitions. Second operand has 770 states, 770 states have (on average 4.962337662337663) internal successors, (3821), 769 states have internal predecessors, (3821), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:13:56,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 07:13:56,111 INFO L93 Difference]: Finished difference Result 3843 states and 4228 transitions. [2022-01-31 07:13:56,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 769 states. [2022-01-31 07:13:56,113 INFO L78 Accepts]: Start accepts. Automaton has has 770 states, 770 states have (on average 4.962337662337663) internal successors, (3821), 769 states have internal predecessors, (3821), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 1914 [2022-01-31 07:13:56,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 07:13:56,123 INFO L225 Difference]: With dead ends: 3843 [2022-01-31 07:13:56,123 INFO L226 Difference]: Without dead ends: 3836 [2022-01-31 07:13:56,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4214 GetRequests, 3446 SyntacticMatches, 0 SemanticMatches, 768 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1910 ImplicationChecksByTransitivity, 136.8s TimeCoverageRelationStatistics Valid=295298, Invalid=296832, Unknown=0, NotChecked=0, Total=592130 [2022-01-31 07:13:56,150 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 4453 mSDsluCounter, 2433 mSDsCounter, 0 mSdLazyCounter, 1666 mSolverCounterSat, 870 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4453 SdHoareTripleChecker+Valid, 2468 SdHoareTripleChecker+Invalid, 2536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 870 IncrementalHoareTripleChecker+Valid, 1666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-31 07:13:56,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4453 Valid, 2468 Invalid, 2536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [870 Valid, 1666 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-31 07:13:56,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3836 states. [2022-01-31 07:13:56,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3836 to 3836. [2022-01-31 07:13:56,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3836 states, 3832 states have (on average 1.0005219206680585) internal successors, (3834), 3832 states have internal predecessors, (3834), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:13:56,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3836 states to 3836 states and 3837 transitions. [2022-01-31 07:13:56,212 INFO L78 Accepts]: Start accepts. Automaton has 3836 states and 3837 transitions. Word has length 1914 [2022-01-31 07:13:56,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 07:13:56,214 INFO L470 AbstractCegarLoop]: Abstraction has 3836 states and 3837 transitions. [2022-01-31 07:13:56,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 770 states, 770 states have (on average 4.962337662337663) internal successors, (3821), 769 states have internal predecessors, (3821), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:13:56,215 INFO L276 IsEmpty]: Start isEmpty. Operand 3836 states and 3837 transitions. [2022-01-31 07:13:56,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3835 [2022-01-31 07:13:56,336 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 07:13:56,337 INFO L514 BasicCegarLoop]: trace histogram [758, 757, 757, 757, 757, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 07:13:56,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-01-31 07:13:56,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 07:13:56,551 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 07:13:56,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 07:13:56,552 INFO L85 PathProgramCache]: Analyzing trace with hash 2127294326, now seen corresponding path program 7 times [2022-01-31 07:13:56,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 07:13:56,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981691253] [2022-01-31 07:13:56,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 07:13:56,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 07:13:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:16:34,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 07:16:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:16:34,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1432244 backedges. 0 proven. 1432244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 07:16:34,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 07:16:34,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981691253] [2022-01-31 07:16:34,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981691253] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 07:16:34,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691134791] [2022-01-31 07:16:34,498 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-31 07:16:34,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 07:16:34,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 07:16:34,500 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 07:16:34,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-31 07:16:39,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:16:39,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 32658 conjuncts, 768 conjunts are in the unsatisfiable core [2022-01-31 07:16:39,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 07:16:46,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1432244 backedges. 0 proven. 1432244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 07:16:46,006 INFO L328 TraceCheckSpWp]: Computing backward predicates...