/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-commit-1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 12:12:06,970 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 12:12:07,019 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 12:12:07,049 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 12:12:07,050 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 12:12:07,050 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 12:12:07,051 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 12:12:07,051 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 12:12:07,051 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 12:12:07,053 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 12:12:07,053 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 12:12:07,053 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 12:12:07,053 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 12:12:07,053 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 12:12:07,053 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 12:12:07,054 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 12:12:07,054 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 12:12:07,054 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 12:12:07,054 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 12:12:07,054 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 12:12:07,054 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 12:12:07,055 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 12:12:07,056 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 12:12:07,056 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 12:12:07,056 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 12:12:07,056 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:12:07,056 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 12:12:07,056 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 12:12:07,057 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 12:12:07,057 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 12:12:07,057 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 12:12:07,057 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 12:12:07,058 INFO L153 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 12:12:07,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 12:12:07,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 12:12:07,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 12:12:07,259 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 12:12:07,259 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 12:12:07,260 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-commit-1.wvr.c [2023-11-17 12:12:08,298 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 12:12:08,419 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 12:12:08,419 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-1.wvr.c [2023-11-17 12:12:08,424 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62372beef/8308cf12456a413eb128af1f6f941aaf/FLAG0ecefc5ac [2023-11-17 12:12:08,437 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62372beef/8308cf12456a413eb128af1f6f941aaf [2023-11-17 12:12:08,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 12:12:08,439 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 12:12:08,440 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 12:12:08,440 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 12:12:08,443 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 12:12:08,443 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:12:08" (1/1) ... [2023-11-17 12:12:08,444 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c6eff33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:12:08, skipping insertion in model container [2023-11-17 12:12:08,444 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:12:08" (1/1) ... [2023-11-17 12:12:08,463 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 12:12:08,600 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-1.wvr.c[4643,4656] [2023-11-17 12:12:08,608 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:12:08,615 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 12:12:08,635 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-1.wvr.c[4643,4656] [2023-11-17 12:12:08,637 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:12:08,642 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:12:08,642 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:12:08,653 INFO L206 MainTranslator]: Completed translation [2023-11-17 12:12:08,654 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:12:08 WrapperNode [2023-11-17 12:12:08,655 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 12:12:08,655 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 12:12:08,656 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 12:12:08,656 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 12:12:08,660 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:12:08" (1/1) ... [2023-11-17 12:12:08,678 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:12:08" (1/1) ... [2023-11-17 12:12:08,701 INFO L138 Inliner]: procedures = 25, calls = 68, calls flagged for inlining = 20, calls inlined = 24, statements flattened = 352 [2023-11-17 12:12:08,702 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 12:12:08,702 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 12:12:08,702 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 12:12:08,702 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 12:12:08,708 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:12:08" (1/1) ... [2023-11-17 12:12:08,708 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:12:08" (1/1) ... [2023-11-17 12:12:08,711 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:12:08" (1/1) ... [2023-11-17 12:12:08,711 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:12:08" (1/1) ... [2023-11-17 12:12:08,718 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:12:08" (1/1) ... [2023-11-17 12:12:08,737 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:12:08" (1/1) ... [2023-11-17 12:12:08,739 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:12:08" (1/1) ... [2023-11-17 12:12:08,740 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:12:08" (1/1) ... [2023-11-17 12:12:08,751 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 12:12:08,752 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 12:12:08,752 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 12:12:08,752 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 12:12:08,753 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:12:08" (1/1) ... [2023-11-17 12:12:08,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:12:08,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:12:08,790 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) [2023-11-17 12:12:08,796 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 [2023-11-17 12:12:08,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 12:12:08,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 12:12:08,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 12:12:08,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 12:12:08,813 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 12:12:08,813 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 12:12:08,813 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 12:12:08,813 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 12:12:08,813 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 12:12:08,814 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 12:12:08,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 12:12:08,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 12:12:08,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 12:12:08,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 12:12:08,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 12:12:08,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 12:12:08,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 12:12:08,815 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 12:12:08,924 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 12:12:08,925 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 12:12:09,266 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 12:12:09,564 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 12:12:09,564 INFO L307 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-17 12:12:09,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:12:09 BoogieIcfgContainer [2023-11-17 12:12:09,565 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 12:12:09,567 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 12:12:09,567 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 12:12:09,569 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 12:12:09,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:12:08" (1/3) ... [2023-11-17 12:12:09,570 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33506cc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:12:09, skipping insertion in model container [2023-11-17 12:12:09,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:12:08" (2/3) ... [2023-11-17 12:12:09,570 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33506cc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:12:09, skipping insertion in model container [2023-11-17 12:12:09,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:12:09" (3/3) ... [2023-11-17 12:12:09,571 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-1.wvr.c [2023-11-17 12:12:09,583 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 12:12:09,583 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 12:12:09,583 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 12:12:09,633 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-17 12:12:09,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 50 transitions, 121 flow [2023-11-17 12:12:09,691 INFO L124 PetriNetUnfolderBase]: 9/47 cut-off events. [2023-11-17 12:12:09,691 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 12:12:09,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 9/47 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 82 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2023-11-17 12:12:09,695 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 50 transitions, 121 flow [2023-11-17 12:12:09,697 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 46 transitions, 110 flow [2023-11-17 12:12:09,700 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 12:12:09,714 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 47 places, 46 transitions, 110 flow [2023-11-17 12:12:09,717 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 47 places, 46 transitions, 110 flow [2023-11-17 12:12:09,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 46 transitions, 110 flow [2023-11-17 12:12:09,731 INFO L124 PetriNetUnfolderBase]: 9/46 cut-off events. [2023-11-17 12:12:09,732 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 12:12:09,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 9/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 81 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2023-11-17 12:12:09,733 INFO L119 LiptonReduction]: Number of co-enabled transitions 708 [2023-11-17 12:12:10,654 INFO L134 LiptonReduction]: Checked pairs total: 1178 [2023-11-17 12:12:10,654 INFO L136 LiptonReduction]: Total number of compositions: 19 [2023-11-17 12:12:10,669 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 12:12:10,674 INFO L357 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@715f4018, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 12:12:10,674 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 12:12:10,685 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 12:12:10,685 INFO L124 PetriNetUnfolderBase]: 6/32 cut-off events. [2023-11-17 12:12:10,685 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 12:12:10,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:12:10,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:12:10,686 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:12:10,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:12:10,690 INFO L85 PathProgramCache]: Analyzing trace with hash 509140572, now seen corresponding path program 1 times [2023-11-17 12:12:10,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:12:10,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077658768] [2023-11-17 12:12:10,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:12:10,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:12:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:12:11,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:12:11,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:12:11,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077658768] [2023-11-17 12:12:11,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077658768] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:12:11,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:12:11,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 12:12:11,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894106171] [2023-11-17 12:12:11,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:12:11,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:12:11,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:12:11,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:12:11,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:12:11,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 69 [2023-11-17 12:12:11,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:11,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:12:11,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 69 [2023-11-17 12:12:11,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:12:11,331 INFO L124 PetriNetUnfolderBase]: 919/1273 cut-off events. [2023-11-17 12:12:11,331 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2023-11-17 12:12:11,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2645 conditions, 1273 events. 919/1273 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5053 event pairs, 151 based on Foata normal form. 1/890 useless extension candidates. Maximal degree in co-relation 2229. Up to 1148 conditions per place. [2023-11-17 12:12:11,341 INFO L140 encePairwiseOnDemand]: 64/69 looper letters, 42 selfloop transitions, 4 changer transitions 1/50 dead transitions. [2023-11-17 12:12:11,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 50 transitions, 227 flow [2023-11-17 12:12:11,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:12:11,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:12:11,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2023-11-17 12:12:11,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37681159420289856 [2023-11-17 12:12:11,351 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 78 transitions. [2023-11-17 12:12:11,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 78 transitions. [2023-11-17 12:12:11,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:12:11,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 78 transitions. [2023-11-17 12:12:11,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:11,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:11,360 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:11,361 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 84 flow. Second operand 3 states and 78 transitions. [2023-11-17 12:12:11,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 50 transitions, 227 flow [2023-11-17 12:12:11,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 50 transitions, 205 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-17 12:12:11,367 INFO L231 Difference]: Finished difference. Result has 34 places, 36 transitions, 98 flow [2023-11-17 12:12:11,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=34, PETRI_TRANSITIONS=36} [2023-11-17 12:12:11,371 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -3 predicate places. [2023-11-17 12:12:11,371 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 36 transitions, 98 flow [2023-11-17 12:12:11,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:11,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:12:11,372 INFO L208 CegarLoopForPetriNet]: 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] [2023-11-17 12:12:11,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 12:12:11,372 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:12:11,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:12:11,378 INFO L85 PathProgramCache]: Analyzing trace with hash -2036964355, now seen corresponding path program 1 times [2023-11-17 12:12:11,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:12:11,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905361170] [2023-11-17 12:12:11,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:12:11,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:12:11,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:12:11,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:12:11,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:12:11,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905361170] [2023-11-17 12:12:11,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905361170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:12:11,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:12:11,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:12:11,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509766444] [2023-11-17 12:12:11,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:12:11,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:12:11,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:12:11,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:12:11,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:12:11,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 69 [2023-11-17 12:12:11,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 36 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:11,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:12:11,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 69 [2023-11-17 12:12:11,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:12:11,663 INFO L124 PetriNetUnfolderBase]: 871/1256 cut-off events. [2023-11-17 12:12:11,664 INFO L125 PetriNetUnfolderBase]: For 197/197 co-relation queries the response was YES. [2023-11-17 12:12:11,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2846 conditions, 1256 events. 871/1256 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5239 event pairs, 260 based on Foata normal form. 46/1160 useless extension candidates. Maximal degree in co-relation 2202. Up to 943 conditions per place. [2023-11-17 12:12:11,670 INFO L140 encePairwiseOnDemand]: 66/69 looper letters, 48 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-11-17 12:12:11,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 53 transitions, 240 flow [2023-11-17 12:12:11,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:12:11,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:12:11,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2023-11-17 12:12:11,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38164251207729466 [2023-11-17 12:12:11,673 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 79 transitions. [2023-11-17 12:12:11,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 79 transitions. [2023-11-17 12:12:11,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:12:11,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 79 transitions. [2023-11-17 12:12:11,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:11,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:11,676 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:11,676 INFO L175 Difference]: Start difference. First operand has 34 places, 36 transitions, 98 flow. Second operand 3 states and 79 transitions. [2023-11-17 12:12:11,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 53 transitions, 240 flow [2023-11-17 12:12:11,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 53 transitions, 237 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:12:11,678 INFO L231 Difference]: Finished difference. Result has 36 places, 36 transitions, 102 flow [2023-11-17 12:12:11,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=36, PETRI_TRANSITIONS=36} [2023-11-17 12:12:11,679 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2023-11-17 12:12:11,679 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 36 transitions, 102 flow [2023-11-17 12:12:11,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:11,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:12:11,681 INFO L208 CegarLoopForPetriNet]: 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] [2023-11-17 12:12:11,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 12:12:11,683 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:12:11,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:12:11,687 INFO L85 PathProgramCache]: Analyzing trace with hash 780602086, now seen corresponding path program 1 times [2023-11-17 12:12:11,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:12:11,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368167385] [2023-11-17 12:12:11,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:12:11,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:12:11,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:12:11,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:12:11,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:12:11,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368167385] [2023-11-17 12:12:11,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368167385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:12:11,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:12:11,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:12:11,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467424887] [2023-11-17 12:12:11,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:12:11,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:12:11,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:12:11,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:12:11,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:12:11,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 69 [2023-11-17 12:12:11,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 36 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:11,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:12:11,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 69 [2023-11-17 12:12:11,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:12:11,937 INFO L124 PetriNetUnfolderBase]: 932/1341 cut-off events. [2023-11-17 12:12:11,937 INFO L125 PetriNetUnfolderBase]: For 415/415 co-relation queries the response was YES. [2023-11-17 12:12:11,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3207 conditions, 1341 events. 932/1341 cut-off events. For 415/415 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5645 event pairs, 235 based on Foata normal form. 34/1231 useless extension candidates. Maximal degree in co-relation 2059. Up to 957 conditions per place. [2023-11-17 12:12:11,943 INFO L140 encePairwiseOnDemand]: 66/69 looper letters, 42 selfloop transitions, 2 changer transitions 6/53 dead transitions. [2023-11-17 12:12:11,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 53 transitions, 243 flow [2023-11-17 12:12:11,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:12:11,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:12:11,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2023-11-17 12:12:11,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391304347826087 [2023-11-17 12:12:11,944 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 81 transitions. [2023-11-17 12:12:11,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 81 transitions. [2023-11-17 12:12:11,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:12:11,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 81 transitions. [2023-11-17 12:12:11,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:11,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:11,945 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:11,945 INFO L175 Difference]: Start difference. First operand has 36 places, 36 transitions, 102 flow. Second operand 3 states and 81 transitions. [2023-11-17 12:12:11,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 53 transitions, 243 flow [2023-11-17 12:12:11,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 53 transitions, 241 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:12:11,947 INFO L231 Difference]: Finished difference. Result has 38 places, 36 transitions, 108 flow [2023-11-17 12:12:11,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=38, PETRI_TRANSITIONS=36} [2023-11-17 12:12:11,947 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 1 predicate places. [2023-11-17 12:12:11,947 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 108 flow [2023-11-17 12:12:11,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:11,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:12:11,948 INFO L208 CegarLoopForPetriNet]: 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] [2023-11-17 12:12:11,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 12:12:11,948 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:12:11,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:12:11,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1536086654, now seen corresponding path program 1 times [2023-11-17 12:12:11,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:12:11,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767639854] [2023-11-17 12:12:11,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:12:11,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:12:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:12:12,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:12:12,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:12:12,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767639854] [2023-11-17 12:12:12,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767639854] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:12:12,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:12:12,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 12:12:12,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684281771] [2023-11-17 12:12:12,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:12:12,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:12:12,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:12:12,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:12:12,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:12:12,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 69 [2023-11-17 12:12:12,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:12,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:12:12,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 69 [2023-11-17 12:12:12,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:12:12,135 INFO L124 PetriNetUnfolderBase]: 486/724 cut-off events. [2023-11-17 12:12:12,135 INFO L125 PetriNetUnfolderBase]: For 350/350 co-relation queries the response was YES. [2023-11-17 12:12:12,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1814 conditions, 724 events. 486/724 cut-off events. For 350/350 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2521 event pairs, 197 based on Foata normal form. 13/667 useless extension candidates. Maximal degree in co-relation 520. Up to 633 conditions per place. [2023-11-17 12:12:12,139 INFO L140 encePairwiseOnDemand]: 66/69 looper letters, 34 selfloop transitions, 2 changer transitions 7/46 dead transitions. [2023-11-17 12:12:12,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 46 transitions, 217 flow [2023-11-17 12:12:12,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:12:12,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:12:12,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2023-11-17 12:12:12,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34299516908212563 [2023-11-17 12:12:12,142 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 71 transitions. [2023-11-17 12:12:12,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 71 transitions. [2023-11-17 12:12:12,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:12:12,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 71 transitions. [2023-11-17 12:12:12,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:12,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:12,144 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:12,144 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 108 flow. Second operand 3 states and 71 transitions. [2023-11-17 12:12:12,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 46 transitions, 217 flow [2023-11-17 12:12:12,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 46 transitions, 215 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:12:12,147 INFO L231 Difference]: Finished difference. Result has 40 places, 37 transitions, 118 flow [2023-11-17 12:12:12,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=40, PETRI_TRANSITIONS=37} [2023-11-17 12:12:12,149 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 3 predicate places. [2023-11-17 12:12:12,149 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 37 transitions, 118 flow [2023-11-17 12:12:12,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:12,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:12:12,149 INFO L208 CegarLoopForPetriNet]: 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] [2023-11-17 12:12:12,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 12:12:12,149 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:12:12,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:12:12,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1159852174, now seen corresponding path program 1 times [2023-11-17 12:12:12,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:12:12,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484171135] [2023-11-17 12:12:12,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:12:12,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:12:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:12:12,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:12:12,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:12:12,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484171135] [2023-11-17 12:12:12,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484171135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:12:12,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:12:12,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:12:12,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658069184] [2023-11-17 12:12:12,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:12:12,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:12:12,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:12:12,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:12:12,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:12:12,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 69 [2023-11-17 12:12:12,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:12,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:12:12,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 69 [2023-11-17 12:12:12,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:12:12,413 INFO L124 PetriNetUnfolderBase]: 527/819 cut-off events. [2023-11-17 12:12:12,413 INFO L125 PetriNetUnfolderBase]: For 366/366 co-relation queries the response was YES. [2023-11-17 12:12:12,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2080 conditions, 819 events. 527/819 cut-off events. For 366/366 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3244 event pairs, 366 based on Foata normal form. 14/822 useless extension candidates. Maximal degree in co-relation 1318. Up to 718 conditions per place. [2023-11-17 12:12:12,417 INFO L140 encePairwiseOnDemand]: 61/69 looper letters, 33 selfloop transitions, 2 changer transitions 23/61 dead transitions. [2023-11-17 12:12:12,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 61 transitions, 288 flow [2023-11-17 12:12:12,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:12:12,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:12:12,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2023-11-17 12:12:12,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30434782608695654 [2023-11-17 12:12:12,418 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 105 transitions. [2023-11-17 12:12:12,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 105 transitions. [2023-11-17 12:12:12,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:12:12,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 105 transitions. [2023-11-17 12:12:12,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:12,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 69.0) internal successors, (414), 6 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:12,420 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 69.0) internal successors, (414), 6 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:12,420 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 118 flow. Second operand 5 states and 105 transitions. [2023-11-17 12:12:12,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 61 transitions, 288 flow [2023-11-17 12:12:12,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 61 transitions, 286 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:12:12,421 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 138 flow [2023-11-17 12:12:12,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=138, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2023-11-17 12:12:12,423 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 9 predicate places. [2023-11-17 12:12:12,423 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 138 flow [2023-11-17 12:12:12,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:12,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:12:12,424 INFO L208 CegarLoopForPetriNet]: 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] [2023-11-17 12:12:12,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 12:12:12,424 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:12:12,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:12:12,424 INFO L85 PathProgramCache]: Analyzing trace with hash 2005769607, now seen corresponding path program 1 times [2023-11-17 12:12:12,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:12:12,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105524020] [2023-11-17 12:12:12,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:12:12,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:12:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:12:12,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:12:12,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:12:12,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105524020] [2023-11-17 12:12:12,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105524020] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:12:12,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:12:12,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:12:12,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652108000] [2023-11-17 12:12:12,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:12:12,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:12:12,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:12:12,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:12:12,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:12:12,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 69 [2023-11-17 12:12:12,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:12,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:12:12,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 69 [2023-11-17 12:12:12,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:12:12,702 INFO L124 PetriNetUnfolderBase]: 572/896 cut-off events. [2023-11-17 12:12:12,702 INFO L125 PetriNetUnfolderBase]: For 444/444 co-relation queries the response was YES. [2023-11-17 12:12:12,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2306 conditions, 896 events. 572/896 cut-off events. For 444/444 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3626 event pairs, 406 based on Foata normal form. 8/898 useless extension candidates. Maximal degree in co-relation 2285. Up to 716 conditions per place. [2023-11-17 12:12:12,706 INFO L140 encePairwiseOnDemand]: 64/69 looper letters, 33 selfloop transitions, 3 changer transitions 23/62 dead transitions. [2023-11-17 12:12:12,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 62 transitions, 332 flow [2023-11-17 12:12:12,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 12:12:12,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 12:12:12,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2023-11-17 12:12:12,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3442028985507246 [2023-11-17 12:12:12,707 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 95 transitions. [2023-11-17 12:12:12,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 95 transitions. [2023-11-17 12:12:12,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:12:12,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 95 transitions. [2023-11-17 12:12:12,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:12,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 69.0) internal successors, (345), 5 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:12,709 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 69.0) internal successors, (345), 5 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:12,710 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 138 flow. Second operand 4 states and 95 transitions. [2023-11-17 12:12:12,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 62 transitions, 332 flow [2023-11-17 12:12:12,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 62 transitions, 308 flow, removed 11 selfloop flow, removed 3 redundant places. [2023-11-17 12:12:12,713 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 142 flow [2023-11-17 12:12:12,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2023-11-17 12:12:12,715 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 9 predicate places. [2023-11-17 12:12:12,715 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 142 flow [2023-11-17 12:12:12,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:12,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:12:12,715 INFO L208 CegarLoopForPetriNet]: 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] [2023-11-17 12:12:12,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 12:12:12,715 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:12:12,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:12:12,716 INFO L85 PathProgramCache]: Analyzing trace with hash 631040979, now seen corresponding path program 1 times [2023-11-17 12:12:12,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:12:12,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172092783] [2023-11-17 12:12:12,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:12:12,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:12:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:12:12,828 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:12:12,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:12:12,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172092783] [2023-11-17 12:12:12,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172092783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:12:12,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:12:12,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:12:12,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341034386] [2023-11-17 12:12:12,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:12:12,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:12:12,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:12:12,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:12:12,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:12:12,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 69 [2023-11-17 12:12:12,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:12,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:12:12,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 69 [2023-11-17 12:12:12,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:12:12,943 INFO L124 PetriNetUnfolderBase]: 547/855 cut-off events. [2023-11-17 12:12:12,943 INFO L125 PetriNetUnfolderBase]: For 387/387 co-relation queries the response was YES. [2023-11-17 12:12:12,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2181 conditions, 855 events. 547/855 cut-off events. For 387/387 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3504 event pairs, 390 based on Foata normal form. 4/853 useless extension candidates. Maximal degree in co-relation 2153. Up to 714 conditions per place. [2023-11-17 12:12:12,947 INFO L140 encePairwiseOnDemand]: 61/69 looper letters, 31 selfloop transitions, 6 changer transitions 17/57 dead transitions. [2023-11-17 12:12:12,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 57 transitions, 298 flow [2023-11-17 12:12:12,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:12:12,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:12:12,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 101 transitions. [2023-11-17 12:12:12,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2927536231884058 [2023-11-17 12:12:12,948 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 101 transitions. [2023-11-17 12:12:12,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 101 transitions. [2023-11-17 12:12:12,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:12:12,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 101 transitions. [2023-11-17 12:12:12,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:12,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 69.0) internal successors, (414), 6 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:12,949 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 69.0) internal successors, (414), 6 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:12,949 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 142 flow. Second operand 5 states and 101 transitions. [2023-11-17 12:12:12,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 57 transitions, 298 flow [2023-11-17 12:12:12,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 57 transitions, 288 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-17 12:12:12,950 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 158 flow [2023-11-17 12:12:12,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=158, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2023-11-17 12:12:12,951 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 12 predicate places. [2023-11-17 12:12:12,951 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 158 flow [2023-11-17 12:12:12,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:12,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:12:12,951 INFO L208 CegarLoopForPetriNet]: 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] [2023-11-17 12:12:12,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 12:12:12,952 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:12:12,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:12:12,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1465584341, now seen corresponding path program 1 times [2023-11-17 12:12:12,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:12:12,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422582848] [2023-11-17 12:12:12,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:12:12,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:12:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:12:13,123 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:12:13,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:12:13,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422582848] [2023-11-17 12:12:13,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422582848] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:12:13,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833686980] [2023-11-17 12:12:13,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:12:13,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:12:13,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:12:13,127 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) [2023-11-17 12:12:13,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 12:12:13,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:12:13,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-17 12:12:13,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:12:13,357 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 12:12:13,357 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 12:12:13,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833686980] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:12:13,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 12:12:13,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-11-17 12:12:13,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89646770] [2023-11-17 12:12:13,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:12:13,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:12:13,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:12:13,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:12:13,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-17 12:12:13,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 69 [2023-11-17 12:12:13,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:13,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:12:13,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 69 [2023-11-17 12:12:13,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:12:13,555 INFO L124 PetriNetUnfolderBase]: 881/1338 cut-off events. [2023-11-17 12:12:13,555 INFO L125 PetriNetUnfolderBase]: For 675/675 co-relation queries the response was YES. [2023-11-17 12:12:13,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3485 conditions, 1338 events. 881/1338 cut-off events. For 675/675 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5066 event pairs, 346 based on Foata normal form. 42/1376 useless extension candidates. Maximal degree in co-relation 3454. Up to 492 conditions per place. [2023-11-17 12:12:13,561 INFO L140 encePairwiseOnDemand]: 64/69 looper letters, 64 selfloop transitions, 9 changer transitions 0/76 dead transitions. [2023-11-17 12:12:13,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 76 transitions, 420 flow [2023-11-17 12:12:13,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 12:12:13,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 12:12:13,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2023-11-17 12:12:13,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38405797101449274 [2023-11-17 12:12:13,562 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 106 transitions. [2023-11-17 12:12:13,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 106 transitions. [2023-11-17 12:12:13,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:12:13,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 106 transitions. [2023-11-17 12:12:13,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:13,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 69.0) internal successors, (345), 5 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:13,563 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 69.0) internal successors, (345), 5 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:13,563 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 158 flow. Second operand 4 states and 106 transitions. [2023-11-17 12:12:13,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 76 transitions, 420 flow [2023-11-17 12:12:13,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 76 transitions, 406 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-17 12:12:13,566 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 207 flow [2023-11-17 12:12:13,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=207, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2023-11-17 12:12:13,567 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 14 predicate places. [2023-11-17 12:12:13,567 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 207 flow [2023-11-17 12:12:13,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:13,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:12:13,568 INFO L208 CegarLoopForPetriNet]: 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] [2023-11-17 12:12:13,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-17 12:12:13,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:12:13,773 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:12:13,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:12:13,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1711079116, now seen corresponding path program 1 times [2023-11-17 12:12:13,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:12:13,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029509036] [2023-11-17 12:12:13,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:12:13,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:12:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:12:13,904 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:12:13,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:12:13,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029509036] [2023-11-17 12:12:13,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029509036] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:12:13,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006147986] [2023-11-17 12:12:13,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:12:13,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:12:13,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:12:13,906 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) [2023-11-17 12:12:13,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 12:12:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:12:14,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 12:12:14,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:12:14,138 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:12:14,138 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:12:14,208 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:12:14,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006147986] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:12:14,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:12:14,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-17 12:12:14,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029578344] [2023-11-17 12:12:14,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:12:14,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 12:12:14,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:12:14,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 12:12:14,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-11-17 12:12:14,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 69 [2023-11-17 12:12:14,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 207 flow. Second operand has 12 states, 12 states have (on average 14.0) internal successors, (168), 12 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:14,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:12:14,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 69 [2023-11-17 12:12:14,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:12:14,432 INFO L124 PetriNetUnfolderBase]: 949/1484 cut-off events. [2023-11-17 12:12:14,432 INFO L125 PetriNetUnfolderBase]: For 1353/1353 co-relation queries the response was YES. [2023-11-17 12:12:14,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4438 conditions, 1484 events. 949/1484 cut-off events. For 1353/1353 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5978 event pairs, 669 based on Foata normal form. 2/1481 useless extension candidates. Maximal degree in co-relation 4041. Up to 1331 conditions per place. [2023-11-17 12:12:14,438 INFO L140 encePairwiseOnDemand]: 63/69 looper letters, 41 selfloop transitions, 3 changer transitions 32/79 dead transitions. [2023-11-17 12:12:14,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 79 transitions, 472 flow [2023-11-17 12:12:14,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 12:12:14,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 12:12:14,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2023-11-17 12:12:14,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2753623188405797 [2023-11-17 12:12:14,439 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 133 transitions. [2023-11-17 12:12:14,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 133 transitions. [2023-11-17 12:12:14,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:12:14,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 133 transitions. [2023-11-17 12:12:14,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:14,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 69.0) internal successors, (552), 8 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:14,441 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 69.0) internal successors, (552), 8 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:14,441 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 207 flow. Second operand 7 states and 133 transitions. [2023-11-17 12:12:14,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 79 transitions, 472 flow [2023-11-17 12:12:14,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 79 transitions, 464 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-11-17 12:12:14,443 INFO L231 Difference]: Finished difference. Result has 61 places, 47 transitions, 223 flow [2023-11-17 12:12:14,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=223, PETRI_PLACES=61, PETRI_TRANSITIONS=47} [2023-11-17 12:12:14,444 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 24 predicate places. [2023-11-17 12:12:14,444 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 47 transitions, 223 flow [2023-11-17 12:12:14,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.0) internal successors, (168), 12 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:14,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:12:14,445 INFO L208 CegarLoopForPetriNet]: 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] [2023-11-17 12:12:14,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-17 12:12:14,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-17 12:12:14,650 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:12:14,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:12:14,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1208155257, now seen corresponding path program 2 times [2023-11-17 12:12:14,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:12:14,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754277223] [2023-11-17 12:12:14,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:12:14,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:12:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:12:14,809 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-17 12:12:14,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:12:14,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754277223] [2023-11-17 12:12:14,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754277223] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:12:14,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081975744] [2023-11-17 12:12:14,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 12:12:14,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:12:14,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:12:14,811 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) [2023-11-17 12:12:14,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 12:12:14,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 12:12:14,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:12:14,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 12:12:14,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:12:15,020 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-17 12:12:15,020 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:12:15,095 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-17 12:12:15,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081975744] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:12:15,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:12:15,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-17 12:12:15,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548169898] [2023-11-17 12:12:15,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:12:15,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 12:12:15,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:12:15,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 12:12:15,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-11-17 12:12:15,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 69 [2023-11-17 12:12:15,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 47 transitions, 223 flow. Second operand has 12 states, 12 states have (on average 14.166666666666666) internal successors, (170), 12 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:15,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:12:15,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 69 [2023-11-17 12:12:15,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:12:15,412 INFO L124 PetriNetUnfolderBase]: 1118/1796 cut-off events. [2023-11-17 12:12:15,412 INFO L125 PetriNetUnfolderBase]: For 1989/1989 co-relation queries the response was YES. [2023-11-17 12:12:15,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5364 conditions, 1796 events. 1118/1796 cut-off events. For 1989/1989 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7872 event pairs, 731 based on Foata normal form. 132/1925 useless extension candidates. Maximal degree in co-relation 5329. Up to 1328 conditions per place. [2023-11-17 12:12:15,418 INFO L140 encePairwiseOnDemand]: 62/69 looper letters, 39 selfloop transitions, 6 changer transitions 44/92 dead transitions. [2023-11-17 12:12:15,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 92 transitions, 590 flow [2023-11-17 12:12:15,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 12:12:15,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 12:12:15,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2023-11-17 12:12:15,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2608695652173913 [2023-11-17 12:12:15,419 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 162 transitions. [2023-11-17 12:12:15,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 162 transitions. [2023-11-17 12:12:15,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:12:15,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 162 transitions. [2023-11-17 12:12:15,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 18.0) internal successors, (162), 9 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:15,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 69.0) internal successors, (690), 10 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:15,421 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 69.0) internal successors, (690), 10 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:15,421 INFO L175 Difference]: Start difference. First operand has 61 places, 47 transitions, 223 flow. Second operand 9 states and 162 transitions. [2023-11-17 12:12:15,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 92 transitions, 590 flow [2023-11-17 12:12:15,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 92 transitions, 568 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-11-17 12:12:15,423 INFO L231 Difference]: Finished difference. Result has 64 places, 48 transitions, 237 flow [2023-11-17 12:12:15,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=237, PETRI_PLACES=64, PETRI_TRANSITIONS=48} [2023-11-17 12:12:15,424 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 27 predicate places. [2023-11-17 12:12:15,424 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 48 transitions, 237 flow [2023-11-17 12:12:15,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.166666666666666) internal successors, (170), 12 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:15,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:12:15,424 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:12:15,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 12:12:15,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:12:15,632 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:12:15,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:12:15,633 INFO L85 PathProgramCache]: Analyzing trace with hash 2041212527, now seen corresponding path program 3 times [2023-11-17 12:12:15,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:12:15,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393708424] [2023-11-17 12:12:15,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:12:15,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:12:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:12:18,127 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:12:18,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:12:18,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393708424] [2023-11-17 12:12:18,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393708424] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:12:18,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926147455] [2023-11-17 12:12:18,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 12:12:18,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:12:18,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:12:18,129 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) [2023-11-17 12:12:18,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 12:12:18,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-17 12:12:18,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:12:18,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-17 12:12:18,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:12:19,337 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 12:12:19,338 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:12:34,879 INFO L349 Elim1Store]: treesize reduction 48, result has 97.6 percent of original size [2023-11-17 12:12:34,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 318 treesize of output 2047 [2023-11-17 12:14:56,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2023-11-17 12:14:56,831 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-11-17 12:14:56,832 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-11-17 12:14:56,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-17 12:14:57,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:14:57,037 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:268) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:410) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:394) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:500) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:252) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:324) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:731) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 78 more [2023-11-17 12:14:57,042 INFO L158 Benchmark]: Toolchain (without parser) took 168602.51ms. Allocated memory was 240.1MB in the beginning and 608.2MB in the end (delta: 368.1MB). Free memory was 203.0MB in the beginning and 424.4MB in the end (delta: -221.4MB). Peak memory consumption was 374.3MB. Max. memory is 8.0GB. [2023-11-17 12:14:57,042 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 185.6MB. Free memory is still 142.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 12:14:57,042 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.97ms. Allocated memory is still 240.1MB. Free memory was 203.0MB in the beginning and 189.9MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-11-17 12:14:57,042 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.22ms. Allocated memory is still 240.1MB. Free memory was 189.9MB in the beginning and 186.7MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 12:14:57,044 INFO L158 Benchmark]: Boogie Preprocessor took 49.36ms. Allocated memory is still 240.1MB. Free memory was 186.7MB in the beginning and 184.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 12:14:57,044 INFO L158 Benchmark]: RCFGBuilder took 813.20ms. Allocated memory is still 240.1MB. Free memory was 184.6MB in the beginning and 182.1MB in the end (delta: 2.5MB). Peak memory consumption was 76.9MB. Max. memory is 8.0GB. [2023-11-17 12:14:57,044 INFO L158 Benchmark]: TraceAbstraction took 167474.35ms. Allocated memory was 240.1MB in the beginning and 608.2MB in the end (delta: 368.1MB). Free memory was 181.6MB in the beginning and 424.4MB in the end (delta: -242.8MB). Peak memory consumption was 351.9MB. Max. memory is 8.0GB. [2023-11-17 12:14:57,045 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 185.6MB. Free memory is still 142.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 214.97ms. Allocated memory is still 240.1MB. Free memory was 203.0MB in the beginning and 189.9MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 46.22ms. Allocated memory is still 240.1MB. Free memory was 189.9MB in the beginning and 186.7MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 49.36ms. Allocated memory is still 240.1MB. Free memory was 186.7MB in the beginning and 184.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 813.20ms. Allocated memory is still 240.1MB. Free memory was 184.6MB in the beginning and 182.1MB in the end (delta: 2.5MB). Peak memory consumption was 76.9MB. Max. memory is 8.0GB. * TraceAbstraction took 167474.35ms. Allocated memory was 240.1MB in the beginning and 608.2MB in the end (delta: 368.1MB). Free memory was 181.6MB in the beginning and 424.4MB in the end (delta: -242.8MB). Peak memory consumption was 351.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.9s, 47 PlacesBefore, 37 PlacesAfterwards, 46 TransitionsBefore, 33 TransitionsAfterwards, 708 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 3 ChoiceCompositions, 19 TotalNumberOfCompositions, 1178 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 860, independent: 824, independent conditional: 0, independent unconditional: 824, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 487, independent: 466, independent conditional: 0, independent unconditional: 466, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 487, independent: 454, independent conditional: 0, independent unconditional: 454, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 33, independent: 12, independent conditional: 0, independent unconditional: 12, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 203, independent: 111, independent conditional: 0, independent unconditional: 111, dependent: 92, dependent conditional: 0, dependent unconditional: 92, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 860, independent: 358, independent conditional: 0, independent unconditional: 358, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 487, unknown conditional: 0, unknown unconditional: 487] , Statistics on independence cache: Total cache size (in pairs): 147, Positive cache size: 133, Positive conditional cache size: 0, Positive unconditional cache size: 133, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...