/usr/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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.fix-rcfgbuilder-lbe-0ccecc1-m [2023-11-10 12:22:00,852 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-10 12:22:00,904 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-NoLbe.epf [2023-11-10 12:22:00,930 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-10 12:22:00,931 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-10 12:22:00,931 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-10 12:22:00,932 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-10 12:22:00,932 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-10 12:22:00,932 INFO L153 SettingsManager]: * Use SBE=true [2023-11-10 12:22:00,936 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-10 12:22:00,936 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-10 12:22:00,936 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-10 12:22:00,937 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-10 12:22:00,937 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-10 12:22:00,937 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-10 12:22:00,937 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-10 12:22:00,938 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-10 12:22:00,938 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-10 12:22:00,938 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-10 12:22:00,938 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-10 12:22:00,938 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-10 12:22:00,939 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-10 12:22:00,939 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-10 12:22:00,940 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-10 12:22:00,940 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-10 12:22:00,940 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 12:22:00,940 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-10 12:22:00,940 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-10 12:22:00,940 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-10 12:22:00,941 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-10 12:22:00,942 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-10 12:22:00,942 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-10 12:22:00,942 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-10 12:22:00,942 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-10 12:22:01,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-10 12:22:01,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-10 12:22:01,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-10 12:22:01,187 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-10 12:22:01,188 INFO L274 PluginConnector]: CDTParser initialized [2023-11-10 12:22:01,189 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-1.wvr.c [2023-11-10 12:22:02,288 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-10 12:22:02,443 INFO L384 CDTParser]: Found 1 translation units. [2023-11-10 12:22:02,443 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-1.wvr.c [2023-11-10 12:22:02,455 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd9ecb256/5454f30f942240acb68320fafe7a35c2/FLAG175d606e5 [2023-11-10 12:22:02,472 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd9ecb256/5454f30f942240acb68320fafe7a35c2 [2023-11-10 12:22:02,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-10 12:22:02,479 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-10 12:22:02,481 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-10 12:22:02,481 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-10 12:22:02,484 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-10 12:22:02,485 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:22:02" (1/1) ... [2023-11-10 12:22:02,486 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@281ee42a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:22:02, skipping insertion in model container [2023-11-10 12:22:02,487 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:22:02" (1/1) ... [2023-11-10 12:22:02,515 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-10 12:22:02,706 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/parallel-parallel-sum-1.wvr.c[3642,3655] [2023-11-10 12:22:02,721 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 12:22:02,729 INFO L202 MainTranslator]: Completed pre-run [2023-11-10 12:22:02,754 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/parallel-parallel-sum-1.wvr.c[3642,3655] [2023-11-10 12:22:02,758 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 12:22:02,764 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-10 12:22:02,764 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-10 12:22:02,771 INFO L206 MainTranslator]: Completed translation [2023-11-10 12:22:02,773 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:22:02 WrapperNode [2023-11-10 12:22:02,774 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-10 12:22:02,775 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-10 12:22:02,775 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-10 12:22:02,775 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-10 12:22:02,781 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:22:02" (1/1) ... [2023-11-10 12:22:02,791 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:22:02" (1/1) ... [2023-11-10 12:22:02,817 INFO L138 Inliner]: procedures = 27, calls = 68, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 311 [2023-11-10 12:22:02,817 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-10 12:22:02,818 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-10 12:22:02,818 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-10 12:22:02,818 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-10 12:22:02,826 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:22:02" (1/1) ... [2023-11-10 12:22:02,826 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:22:02" (1/1) ... [2023-11-10 12:22:02,830 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:22:02" (1/1) ... [2023-11-10 12:22:02,830 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:22:02" (1/1) ... [2023-11-10 12:22:02,838 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:22:02" (1/1) ... [2023-11-10 12:22:02,842 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:22:02" (1/1) ... [2023-11-10 12:22:02,844 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:22:02" (1/1) ... [2023-11-10 12:22:02,845 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:22:02" (1/1) ... [2023-11-10 12:22:02,849 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-10 12:22:02,850 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-10 12:22:02,850 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-10 12:22:02,850 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-10 12:22:02,851 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:22:02" (1/1) ... [2023-11-10 12:22:02,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 12:22:02,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:22:02,886 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) [2023-11-10 12:22:02,902 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 [2023-11-10 12:22:02,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-10 12:22:02,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-10 12:22:02,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-10 12:22:02,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-10 12:22:02,919 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-10 12:22:02,920 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-10 12:22:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-10 12:22:02,920 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-10 12:22:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-10 12:22:02,920 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-10 12:22:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-10 12:22:02,920 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-10 12:22:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-10 12:22:02,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-10 12:22:02,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-10 12:22:02,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-10 12:22:02,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-10 12:22:02,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-10 12:22:02,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-10 12:22:02,923 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-10 12:22:03,022 INFO L236 CfgBuilder]: Building ICFG [2023-11-10 12:22:03,023 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-10 12:22:03,371 INFO L277 CfgBuilder]: Performing block encoding [2023-11-10 12:22:03,604 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-10 12:22:03,604 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-10 12:22:03,611 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:22:03 BoogieIcfgContainer [2023-11-10 12:22:03,611 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-10 12:22:03,615 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-10 12:22:03,615 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-10 12:22:03,617 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-10 12:22:03,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 12:22:02" (1/3) ... [2023-11-10 12:22:03,618 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3685567f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:22:03, skipping insertion in model container [2023-11-10 12:22:03,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:22:02" (2/3) ... [2023-11-10 12:22:03,619 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3685567f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:22:03, skipping insertion in model container [2023-11-10 12:22:03,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:22:03" (3/3) ... [2023-11-10 12:22:03,620 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1.wvr.c [2023-11-10 12:22:03,635 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-10 12:22:03,636 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-10 12:22:03,637 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-10 12:22:03,718 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-10 12:22:03,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 217 transitions, 462 flow [2023-11-10 12:22:03,854 INFO L124 PetriNetUnfolderBase]: 15/213 cut-off events. [2023-11-10 12:22:03,854 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-10 12:22:03,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 213 events. 15/213 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 131 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 172. Up to 2 conditions per place. [2023-11-10 12:22:03,860 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 217 transitions, 462 flow [2023-11-10 12:22:03,870 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 200 transitions, 424 flow [2023-11-10 12:22:03,884 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 12:22:03,893 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;@46abfb78, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 12:22:03,893 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-10 12:22:03,957 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 12:22:03,957 INFO L124 PetriNetUnfolderBase]: 15/199 cut-off events. [2023-11-10 12:22:03,957 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-10 12:22:03,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:22:03,958 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:22:03,958 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 2 more)] === [2023-11-10 12:22:03,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:22:03,963 INFO L85 PathProgramCache]: Analyzing trace with hash -683934653, now seen corresponding path program 1 times [2023-11-10 12:22:03,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:22:03,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656300208] [2023-11-10 12:22:03,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:22:03,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:22:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:22:04,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:22:04,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:22:04,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656300208] [2023-11-10 12:22:04,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656300208] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:22:04,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:22:04,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-10 12:22:04,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321002530] [2023-11-10 12:22:04,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:22:04,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-10 12:22:04,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:22:04,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-10 12:22:04,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-10 12:22:04,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 217 [2023-11-10 12:22:04,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 200 transitions, 424 flow. Second operand has 2 states, 2 states have (on average 196.0) internal successors, (392), 2 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:04,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:22:04,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 217 [2023-11-10 12:22:04,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:22:04,429 INFO L124 PetriNetUnfolderBase]: 118/336 cut-off events. [2023-11-10 12:22:04,430 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2023-11-10 12:22:04,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 336 events. 118/336 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 607 event pairs, 51 based on Foata normal form. 72/392 useless extension candidates. Maximal degree in co-relation 355. Up to 163 conditions per place. [2023-11-10 12:22:04,436 INFO L140 encePairwiseOnDemand]: 207/217 looper letters, 16 selfloop transitions, 0 changer transitions 5/190 dead transitions. [2023-11-10 12:22:04,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 190 transitions, 436 flow [2023-11-10 12:22:04,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-10 12:22:04,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-10 12:22:04,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 406 transitions. [2023-11-10 12:22:04,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9354838709677419 [2023-11-10 12:22:04,454 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 406 transitions. [2023-11-10 12:22:04,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 406 transitions. [2023-11-10 12:22:04,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:22:04,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 406 transitions. [2023-11-10 12:22:04,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 203.0) internal successors, (406), 2 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:04,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:04,471 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:04,472 INFO L175 Difference]: Start difference. First operand has 198 places, 200 transitions, 424 flow. Second operand 2 states and 406 transitions. [2023-11-10 12:22:04,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 190 transitions, 436 flow [2023-11-10 12:22:04,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 190 transitions, 420 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-10 12:22:04,482 INFO L231 Difference]: Finished difference. Result has 191 places, 185 transitions, 378 flow [2023-11-10 12:22:04,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=378, PETRI_PLACES=191, PETRI_TRANSITIONS=185} [2023-11-10 12:22:04,489 INFO L281 CegarLoopForPetriNet]: 198 programPoint places, -7 predicate places. [2023-11-10 12:22:04,489 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 185 transitions, 378 flow [2023-11-10 12:22:04,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 196.0) internal successors, (392), 2 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:04,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:22:04,491 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:22:04,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-10 12:22:04,491 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 2 more)] === [2023-11-10 12:22:04,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:22:04,492 INFO L85 PathProgramCache]: Analyzing trace with hash -262331107, now seen corresponding path program 1 times [2023-11-10 12:22:04,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:22:04,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051779259] [2023-11-10 12:22:04,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:22:04,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:22:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:22:05,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:22:05,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:22:05,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051779259] [2023-11-10 12:22:05,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051779259] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:22:05,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:22:05,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 12:22:05,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077040076] [2023-11-10 12:22:05,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:22:05,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 12:22:05,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:22:05,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 12:22:05,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-10 12:22:05,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 217 [2023-11-10 12:22:05,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 185 transitions, 378 flow. Second operand has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:05,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:22:05,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 217 [2023-11-10 12:22:05,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:22:05,453 INFO L124 PetriNetUnfolderBase]: 234/629 cut-off events. [2023-11-10 12:22:05,454 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-10 12:22:05,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1021 conditions, 629 events. 234/629 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2217 event pairs, 51 based on Foata normal form. 1/604 useless extension candidates. Maximal degree in co-relation 1018. Up to 256 conditions per place. [2023-11-10 12:22:05,463 INFO L140 encePairwiseOnDemand]: 207/217 looper letters, 57 selfloop transitions, 7 changer transitions 4/203 dead transitions. [2023-11-10 12:22:05,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 203 transitions, 557 flow [2023-11-10 12:22:05,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-10 12:22:05,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-10 12:22:05,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1126 transitions. [2023-11-10 12:22:05,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7412771560236998 [2023-11-10 12:22:05,499 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1126 transitions. [2023-11-10 12:22:05,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1126 transitions. [2023-11-10 12:22:05,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:22:05,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1126 transitions. [2023-11-10 12:22:05,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 160.85714285714286) internal successors, (1126), 7 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:05,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 217.0) internal successors, (1736), 8 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:05,511 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 217.0) internal successors, (1736), 8 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:05,512 INFO L175 Difference]: Start difference. First operand has 191 places, 185 transitions, 378 flow. Second operand 7 states and 1126 transitions. [2023-11-10 12:22:05,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 203 transitions, 557 flow [2023-11-10 12:22:05,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 203 transitions, 557 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-10 12:22:05,518 INFO L231 Difference]: Finished difference. Result has 195 places, 189 transitions, 419 flow [2023-11-10 12:22:05,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=419, PETRI_PLACES=195, PETRI_TRANSITIONS=189} [2023-11-10 12:22:05,519 INFO L281 CegarLoopForPetriNet]: 198 programPoint places, -3 predicate places. [2023-11-10 12:22:05,519 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 189 transitions, 419 flow [2023-11-10 12:22:05,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:05,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:22:05,521 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:22:05,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-10 12:22:05,521 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 2 more)] === [2023-11-10 12:22:05,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:22:05,522 INFO L85 PathProgramCache]: Analyzing trace with hash -722104545, now seen corresponding path program 1 times [2023-11-10 12:22:05,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:22:05,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116661019] [2023-11-10 12:22:05,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:22:05,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:22:05,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:22:06,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:22:06,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:22:06,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116661019] [2023-11-10 12:22:06,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116661019] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:22:06,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:22:06,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-10 12:22:06,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747544395] [2023-11-10 12:22:06,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:22:06,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-10 12:22:06,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:22:06,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-10 12:22:06,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-10 12:22:06,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 217 [2023-11-10 12:22:06,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 189 transitions, 419 flow. Second operand has 9 states, 9 states have (on average 138.55555555555554) internal successors, (1247), 9 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:06,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:22:06,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 217 [2023-11-10 12:22:06,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:22:06,387 INFO L124 PetriNetUnfolderBase]: 283/761 cut-off events. [2023-11-10 12:22:06,387 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2023-11-10 12:22:06,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1537 conditions, 761 events. 283/761 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2940 event pairs, 144 based on Foata normal form. 35/759 useless extension candidates. Maximal degree in co-relation 1530. Up to 353 conditions per place. [2023-11-10 12:22:06,395 INFO L140 encePairwiseOnDemand]: 204/217 looper letters, 94 selfloop transitions, 13 changer transitions 0/223 dead transitions. [2023-11-10 12:22:06,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 223 transitions, 732 flow [2023-11-10 12:22:06,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-10 12:22:06,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-10 12:22:06,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1687 transitions. [2023-11-10 12:22:06,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6478494623655914 [2023-11-10 12:22:06,400 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1687 transitions. [2023-11-10 12:22:06,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1687 transitions. [2023-11-10 12:22:06,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:22:06,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1687 transitions. [2023-11-10 12:22:06,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 140.58333333333334) internal successors, (1687), 12 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:06,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 217.0) internal successors, (2821), 13 states have internal predecessors, (2821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:06,410 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 217.0) internal successors, (2821), 13 states have internal predecessors, (2821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:06,411 INFO L175 Difference]: Start difference. First operand has 195 places, 189 transitions, 419 flow. Second operand 12 states and 1687 transitions. [2023-11-10 12:22:06,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 223 transitions, 732 flow [2023-11-10 12:22:06,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 223 transitions, 708 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-11-10 12:22:06,419 INFO L231 Difference]: Finished difference. Result has 205 places, 197 transitions, 478 flow [2023-11-10 12:22:06,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=478, PETRI_PLACES=205, PETRI_TRANSITIONS=197} [2023-11-10 12:22:06,420 INFO L281 CegarLoopForPetriNet]: 198 programPoint places, 7 predicate places. [2023-11-10 12:22:06,421 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 197 transitions, 478 flow [2023-11-10 12:22:06,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 138.55555555555554) internal successors, (1247), 9 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:06,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:22:06,422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:22:06,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-10 12:22:06,423 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 2 more)] === [2023-11-10 12:22:06,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:22:06,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1630552569, now seen corresponding path program 1 times [2023-11-10 12:22:06,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:22:06,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561201503] [2023-11-10 12:22:06,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:22:06,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:22:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:22:06,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:22:06,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:22:06,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561201503] [2023-11-10 12:22:06,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561201503] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:22:06,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:22:06,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-10 12:22:06,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925984002] [2023-11-10 12:22:06,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:22:06,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-10 12:22:06,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:22:06,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-10 12:22:06,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-10 12:22:06,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 217 [2023-11-10 12:22:06,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 197 transitions, 478 flow. Second operand has 8 states, 8 states have (on average 156.5) internal successors, (1252), 8 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:06,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:22:06,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 217 [2023-11-10 12:22:06,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:22:07,330 INFO L124 PetriNetUnfolderBase]: 541/1319 cut-off events. [2023-11-10 12:22:07,330 INFO L125 PetriNetUnfolderBase]: For 340/340 co-relation queries the response was YES. [2023-11-10 12:22:07,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2675 conditions, 1319 events. 541/1319 cut-off events. For 340/340 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6636 event pairs, 89 based on Foata normal form. 2/1264 useless extension candidates. Maximal degree in co-relation 2664. Up to 327 conditions per place. [2023-11-10 12:22:07,340 INFO L140 encePairwiseOnDemand]: 207/217 looper letters, 79 selfloop transitions, 12 changer transitions 13/240 dead transitions. [2023-11-10 12:22:07,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 240 transitions, 820 flow [2023-11-10 12:22:07,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-10 12:22:07,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-10 12:22:07,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1294 transitions. [2023-11-10 12:22:07,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7453917050691244 [2023-11-10 12:22:07,344 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1294 transitions. [2023-11-10 12:22:07,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1294 transitions. [2023-11-10 12:22:07,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:22:07,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1294 transitions. [2023-11-10 12:22:07,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 161.75) internal successors, (1294), 8 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:07,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 217.0) internal successors, (1953), 9 states have internal predecessors, (1953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:07,351 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 217.0) internal successors, (1953), 9 states have internal predecessors, (1953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:07,351 INFO L175 Difference]: Start difference. First operand has 205 places, 197 transitions, 478 flow. Second operand 8 states and 1294 transitions. [2023-11-10 12:22:07,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 240 transitions, 820 flow [2023-11-10 12:22:07,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 240 transitions, 818 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-10 12:22:07,358 INFO L231 Difference]: Finished difference. Result has 218 places, 199 transitions, 532 flow [2023-11-10 12:22:07,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=532, PETRI_PLACES=218, PETRI_TRANSITIONS=199} [2023-11-10 12:22:07,359 INFO L281 CegarLoopForPetriNet]: 198 programPoint places, 20 predicate places. [2023-11-10 12:22:07,360 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 199 transitions, 532 flow [2023-11-10 12:22:07,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 156.5) internal successors, (1252), 8 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:07,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:22:07,360 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:22:07,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-10 12:22:07,361 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 2 more)] === [2023-11-10 12:22:07,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:22:07,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1916955047, now seen corresponding path program 1 times [2023-11-10 12:22:07,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:22:07,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3135037] [2023-11-10 12:22:07,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:22:07,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:22:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:22:07,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:22:07,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:22:07,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3135037] [2023-11-10 12:22:07,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3135037] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:22:07,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495524577] [2023-11-10 12:22:07,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:22:07,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:22:07,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:22:07,825 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) [2023-11-10 12:22:07,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-10 12:22:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:22:07,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-10 12:22:07,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:22:08,281 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:22:08,281 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:22:08,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:22:08,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495524577] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:22:08,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:22:08,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2023-11-10 12:22:08,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674635268] [2023-11-10 12:22:08,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:22:08,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-10 12:22:08,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:22:08,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-10 12:22:08,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2023-11-10 12:22:08,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 217 [2023-11-10 12:22:08,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 199 transitions, 532 flow. Second operand has 24 states, 24 states have (on average 135.54166666666666) internal successors, (3253), 24 states have internal predecessors, (3253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:08,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:22:08,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 217 [2023-11-10 12:22:08,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:22:09,152 INFO L124 PetriNetUnfolderBase]: 541/1320 cut-off events. [2023-11-10 12:22:09,152 INFO L125 PetriNetUnfolderBase]: For 957/957 co-relation queries the response was YES. [2023-11-10 12:22:09,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3163 conditions, 1320 events. 541/1320 cut-off events. For 957/957 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6544 event pairs, 198 based on Foata normal form. 35/1287 useless extension candidates. Maximal degree in co-relation 3146. Up to 692 conditions per place. [2023-11-10 12:22:09,169 INFO L140 encePairwiseOnDemand]: 194/217 looper letters, 73 selfloop transitions, 19 changer transitions 26/233 dead transitions. [2023-11-10 12:22:09,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 233 transitions, 893 flow [2023-11-10 12:22:09,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-10 12:22:09,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-10 12:22:09,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2854 transitions. [2023-11-10 12:22:09,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6262892253675664 [2023-11-10 12:22:09,179 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2854 transitions. [2023-11-10 12:22:09,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2854 transitions. [2023-11-10 12:22:09,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:22:09,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2854 transitions. [2023-11-10 12:22:09,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 135.9047619047619) internal successors, (2854), 21 states have internal predecessors, (2854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:09,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 217.0) internal successors, (4774), 22 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:09,234 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 217.0) internal successors, (4774), 22 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:09,235 INFO L175 Difference]: Start difference. First operand has 218 places, 199 transitions, 532 flow. Second operand 21 states and 2854 transitions. [2023-11-10 12:22:09,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 233 transitions, 893 flow [2023-11-10 12:22:09,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 233 transitions, 850 flow, removed 16 selfloop flow, removed 9 redundant places. [2023-11-10 12:22:09,244 INFO L231 Difference]: Finished difference. Result has 231 places, 203 transitions, 590 flow [2023-11-10 12:22:09,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=590, PETRI_PLACES=231, PETRI_TRANSITIONS=203} [2023-11-10 12:22:09,247 INFO L281 CegarLoopForPetriNet]: 198 programPoint places, 33 predicate places. [2023-11-10 12:22:09,247 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 203 transitions, 590 flow [2023-11-10 12:22:09,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 135.54166666666666) internal successors, (3253), 24 states have internal predecessors, (3253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:09,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:22:09,249 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:22:09,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-10 12:22:09,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:22:09,456 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 2 more)] === [2023-11-10 12:22:09,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:22:09,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1432799341, now seen corresponding path program 2 times [2023-11-10 12:22:09,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:22:09,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091069403] [2023-11-10 12:22:09,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:22:09,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:22:09,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:22:09,831 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-10 12:22:09,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:22:09,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091069403] [2023-11-10 12:22:09,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091069403] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:22:09,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:22:09,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-10 12:22:09,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969432823] [2023-11-10 12:22:09,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:22:09,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-10 12:22:09,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:22:09,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-10 12:22:09,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-10 12:22:09,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 217 [2023-11-10 12:22:09,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 203 transitions, 590 flow. Second operand has 8 states, 8 states have (on average 156.5) internal successors, (1252), 8 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:09,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:22:09,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 217 [2023-11-10 12:22:09,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:22:10,286 INFO L124 PetriNetUnfolderBase]: 726/1831 cut-off events. [2023-11-10 12:22:10,286 INFO L125 PetriNetUnfolderBase]: For 1041/1041 co-relation queries the response was YES. [2023-11-10 12:22:10,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4082 conditions, 1831 events. 726/1831 cut-off events. For 1041/1041 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 10933 event pairs, 125 based on Foata normal form. 1/1726 useless extension candidates. Maximal degree in co-relation 4060. Up to 634 conditions per place. [2023-11-10 12:22:10,304 INFO L140 encePairwiseOnDemand]: 207/217 looper letters, 87 selfloop transitions, 19 changer transitions 4/250 dead transitions. [2023-11-10 12:22:10,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 250 transitions, 1018 flow [2023-11-10 12:22:10,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-10 12:22:10,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-10 12:22:10,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1294 transitions. [2023-11-10 12:22:10,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7453917050691244 [2023-11-10 12:22:10,308 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1294 transitions. [2023-11-10 12:22:10,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1294 transitions. [2023-11-10 12:22:10,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:22:10,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1294 transitions. [2023-11-10 12:22:10,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 161.75) internal successors, (1294), 8 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:10,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 217.0) internal successors, (1953), 9 states have internal predecessors, (1953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:10,315 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 217.0) internal successors, (1953), 9 states have internal predecessors, (1953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:10,315 INFO L175 Difference]: Start difference. First operand has 231 places, 203 transitions, 590 flow. Second operand 8 states and 1294 transitions. [2023-11-10 12:22:10,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 250 transitions, 1018 flow [2023-11-10 12:22:10,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 250 transitions, 957 flow, removed 14 selfloop flow, removed 13 redundant places. [2023-11-10 12:22:10,323 INFO L231 Difference]: Finished difference. Result has 224 places, 216 transitions, 715 flow [2023-11-10 12:22:10,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=715, PETRI_PLACES=224, PETRI_TRANSITIONS=216} [2023-11-10 12:22:10,326 INFO L281 CegarLoopForPetriNet]: 198 programPoint places, 26 predicate places. [2023-11-10 12:22:10,327 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 216 transitions, 715 flow [2023-11-10 12:22:10,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 156.5) internal successors, (1252), 8 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:10,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:22:10,327 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:22:10,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-10 12:22:10,328 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 2 more)] === [2023-11-10 12:22:10,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:22:10,328 INFO L85 PathProgramCache]: Analyzing trace with hash 686206707, now seen corresponding path program 1 times [2023-11-10 12:22:10,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:22:10,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456460012] [2023-11-10 12:22:10,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:22:10,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:22:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:22:13,307 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:22:13,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:22:13,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456460012] [2023-11-10 12:22:13,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456460012] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:22:13,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069662487] [2023-11-10 12:22:13,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:22:13,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:22:13,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:22:13,310 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) [2023-11-10 12:22:13,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-10 12:22:13,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:22:13,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 62 conjunts are in the unsatisfiable core [2023-11-10 12:22:13,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:22:13,489 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-10 12:22:13,533 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-10 12:22:13,534 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2023-11-10 12:22:13,586 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-10 12:22:13,587 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 17 [2023-11-10 12:22:14,108 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-10 12:22:14,108 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-11-10 12:22:15,308 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-10 12:22:15,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-10 12:22:15,464 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-10 12:22:15,629 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-10 12:22:15,630 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 15 [2023-11-10 12:22:16,181 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:22:16,181 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:22:16,945 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 72 [2023-11-10 12:22:16,950 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 60 [2023-11-10 12:22:16,955 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2023-11-10 12:22:19,032 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:22:19,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069662487] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:22:19,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:22:19,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 28] total 78 [2023-11-10 12:22:19,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533595216] [2023-11-10 12:22:19,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:22:19,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2023-11-10 12:22:19,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:22:19,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2023-11-10 12:22:19,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=427, Invalid=5576, Unknown=3, NotChecked=0, Total=6006 [2023-11-10 12:22:19,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 217 [2023-11-10 12:22:19,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 216 transitions, 715 flow. Second operand has 78 states, 78 states have (on average 95.3974358974359) internal successors, (7441), 78 states have internal predecessors, (7441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:19,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:22:19,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 217 [2023-11-10 12:22:19,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:22:30,781 INFO L124 PetriNetUnfolderBase]: 5127/10799 cut-off events. [2023-11-10 12:22:30,781 INFO L125 PetriNetUnfolderBase]: For 12098/12103 co-relation queries the response was YES. [2023-11-10 12:22:30,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27969 conditions, 10799 events. 5127/10799 cut-off events. For 12098/12103 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 89699 event pairs, 161 based on Foata normal form. 95/10377 useless extension candidates. Maximal degree in co-relation 27948. Up to 2853 conditions per place. [2023-11-10 12:22:30,889 INFO L140 encePairwiseOnDemand]: 177/217 looper letters, 383 selfloop transitions, 296 changer transitions 66/829 dead transitions. [2023-11-10 12:22:30,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 829 transitions, 5009 flow [2023-11-10 12:22:30,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2023-11-10 12:22:30,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2023-11-10 12:22:30,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 9001 transitions. [2023-11-10 12:22:30,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45581607332759405 [2023-11-10 12:22:30,912 INFO L72 ComplementDD]: Start complementDD. Operand 91 states and 9001 transitions. [2023-11-10 12:22:30,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 91 states and 9001 transitions. [2023-11-10 12:22:30,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:22:30,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 91 states and 9001 transitions. [2023-11-10 12:22:30,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 92 states, 91 states have (on average 98.91208791208791) internal successors, (9001), 91 states have internal predecessors, (9001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:30,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 92 states, 92 states have (on average 217.0) internal successors, (19964), 92 states have internal predecessors, (19964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:30,989 INFO L81 ComplementDD]: Finished complementDD. Result has 92 states, 92 states have (on average 217.0) internal successors, (19964), 92 states have internal predecessors, (19964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:30,990 INFO L175 Difference]: Start difference. First operand has 224 places, 216 transitions, 715 flow. Second operand 91 states and 9001 transitions. [2023-11-10 12:22:30,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 829 transitions, 5009 flow [2023-11-10 12:22:31,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 829 transitions, 4931 flow, removed 39 selfloop flow, removed 2 redundant places. [2023-11-10 12:22:31,020 INFO L231 Difference]: Finished difference. Result has 331 places, 515 transitions, 3423 flow [2023-11-10 12:22:31,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=91, PETRI_FLOW=3423, PETRI_PLACES=331, PETRI_TRANSITIONS=515} [2023-11-10 12:22:31,021 INFO L281 CegarLoopForPetriNet]: 198 programPoint places, 133 predicate places. [2023-11-10 12:22:31,021 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 515 transitions, 3423 flow [2023-11-10 12:22:31,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 95.3974358974359) internal successors, (7441), 78 states have internal predecessors, (7441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:31,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:22:31,024 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:22:31,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-10 12:22:31,235 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,SelfDestructingSolverStorable6 [2023-11-10 12:22:31,236 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 2 more)] === [2023-11-10 12:22:31,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:22:31,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1949107469, now seen corresponding path program 2 times [2023-11-10 12:22:31,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:22:31,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327092621] [2023-11-10 12:22:31,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:22:31,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:22:31,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:22:32,709 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-10 12:22:32,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:22:32,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327092621] [2023-11-10 12:22:32,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327092621] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:22:32,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354088233] [2023-11-10 12:22:32,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-10 12:22:32,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:22:32,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:22:32,713 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) [2023-11-10 12:22:32,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-10 12:22:32,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-10 12:22:32,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:22:32,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-10 12:22:32,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:22:33,850 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-10 12:22:34,552 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-10 12:22:34,690 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-10 12:22:34,806 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-10 12:22:35,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-10 12:22:35,077 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-10 12:22:35,168 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-10 12:22:35,168 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 15 [2023-11-10 12:22:35,537 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:22:35,538 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:22:37,082 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-10 12:22:37,083 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 49 [2023-11-10 12:22:37,089 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39478 treesize of output 37366 [2023-11-10 12:22:37,112 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 91 [2023-11-10 12:22:37,117 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 158 [2023-11-10 12:22:37,122 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 67 [2023-11-10 12:22:37,128 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 66 [2023-11-10 12:22:37,721 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:22:37,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354088233] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:22:37,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:22:37,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 32, 30] total 71 [2023-11-10 12:22:37,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750103101] [2023-11-10 12:22:37,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:22:37,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2023-11-10 12:22:37,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:22:37,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2023-11-10 12:22:37,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=418, Invalid=4520, Unknown=32, NotChecked=0, Total=4970 [2023-11-10 12:22:37,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 217 [2023-11-10 12:22:37,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 515 transitions, 3423 flow. Second operand has 71 states, 71 states have (on average 97.59154929577464) internal successors, (6929), 71 states have internal predecessors, (6929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:37,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:22:37,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 217 [2023-11-10 12:22:37,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:22:49,282 INFO L124 PetriNetUnfolderBase]: 6181/13287 cut-off events. [2023-11-10 12:22:49,282 INFO L125 PetriNetUnfolderBase]: For 40442/40578 co-relation queries the response was YES. [2023-11-10 12:22:49,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44980 conditions, 13287 events. 6181/13287 cut-off events. For 40442/40578 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 116591 event pairs, 216 based on Foata normal form. 163/12753 useless extension candidates. Maximal degree in co-relation 44939. Up to 3438 conditions per place. [2023-11-10 12:22:49,446 INFO L140 encePairwiseOnDemand]: 176/217 looper letters, 459 selfloop transitions, 425 changer transitions 60/1031 dead transitions. [2023-11-10 12:22:49,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 1031 transitions, 8454 flow [2023-11-10 12:22:49,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-11-10 12:22:49,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2023-11-10 12:22:49,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 8584 transitions. [2023-11-10 12:22:49,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4653835727839523 [2023-11-10 12:22:49,462 INFO L72 ComplementDD]: Start complementDD. Operand 85 states and 8584 transitions. [2023-11-10 12:22:49,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 85 states and 8584 transitions. [2023-11-10 12:22:49,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:22:49,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 85 states and 8584 transitions. [2023-11-10 12:22:49,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 86 states, 85 states have (on average 100.98823529411764) internal successors, (8584), 85 states have internal predecessors, (8584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:49,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 86 states, 86 states have (on average 217.0) internal successors, (18662), 86 states have internal predecessors, (18662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:49,511 INFO L81 ComplementDD]: Finished complementDD. Result has 86 states, 86 states have (on average 217.0) internal successors, (18662), 86 states have internal predecessors, (18662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:49,511 INFO L175 Difference]: Start difference. First operand has 331 places, 515 transitions, 3423 flow. Second operand 85 states and 8584 transitions. [2023-11-10 12:22:49,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 1031 transitions, 8454 flow [2023-11-10 12:22:49,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 1031 transitions, 7847 flow, removed 199 selfloop flow, removed 29 redundant places. [2023-11-10 12:22:49,730 INFO L231 Difference]: Finished difference. Result has 398 places, 717 transitions, 5943 flow [2023-11-10 12:22:49,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=2954, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=85, PETRI_FLOW=5943, PETRI_PLACES=398, PETRI_TRANSITIONS=717} [2023-11-10 12:22:49,733 INFO L281 CegarLoopForPetriNet]: 198 programPoint places, 200 predicate places. [2023-11-10 12:22:49,734 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 717 transitions, 5943 flow [2023-11-10 12:22:49,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 97.59154929577464) internal successors, (6929), 71 states have internal predecessors, (6929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:49,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:22:49,736 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:22:49,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-10 12:22:49,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:22:49,944 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 2 more)] === [2023-11-10 12:22:49,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:22:49,944 INFO L85 PathProgramCache]: Analyzing trace with hash -896426891, now seen corresponding path program 1 times [2023-11-10 12:22:49,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:22:49,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823143088] [2023-11-10 12:22:49,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:22:49,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:22:49,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:22:51,076 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-10 12:22:51,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:22:51,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823143088] [2023-11-10 12:22:51,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823143088] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:22:51,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139136425] [2023-11-10 12:22:51,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:22:51,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:22:51,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:22:51,078 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) [2023-11-10 12:22:51,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-10 12:22:51,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:22:51,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 55 conjunts are in the unsatisfiable core [2023-11-10 12:22:51,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:22:52,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-10 12:22:52,551 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-10 12:22:52,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-10 12:22:52,686 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-10 12:22:52,844 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-11-10 12:22:53,031 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:22:53,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:22:53,551 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 202 treesize of output 154 [2023-11-10 12:22:53,557 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 25 [2023-11-10 12:22:53,563 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28 [2023-11-10 12:22:54,767 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:22:54,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139136425] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:22:54,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:22:54,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 28, 28] total 65 [2023-11-10 12:22:54,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531254439] [2023-11-10 12:22:54,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:22:54,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-11-10 12:22:54,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:22:54,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-11-10 12:22:54,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=3811, Unknown=4, NotChecked=0, Total=4160 [2023-11-10 12:22:54,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 217 [2023-11-10 12:22:54,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 717 transitions, 5943 flow. Second operand has 65 states, 65 states have (on average 101.67692307692307) internal successors, (6609), 65 states have internal predecessors, (6609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:54,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:22:54,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 217 [2023-11-10 12:22:54,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:23:06,256 INFO L124 PetriNetUnfolderBase]: 9094/19564 cut-off events. [2023-11-10 12:23:06,256 INFO L125 PetriNetUnfolderBase]: For 99895/100096 co-relation queries the response was YES. [2023-11-10 12:23:06,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74941 conditions, 19564 events. 9094/19564 cut-off events. For 99895/100096 co-relation queries the response was YES. Maximal size of possible extension queue 752. Compared 182554 event pairs, 241 based on Foata normal form. 167/18707 useless extension candidates. Maximal degree in co-relation 74884. Up to 4446 conditions per place. [2023-11-10 12:23:06,531 INFO L140 encePairwiseOnDemand]: 179/217 looper letters, 815 selfloop transitions, 622 changer transitions 91/1615 dead transitions. [2023-11-10 12:23:06,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 1615 transitions, 15561 flow [2023-11-10 12:23:06,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2023-11-10 12:23:06,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2023-11-10 12:23:06,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 11009 transitions. [2023-11-10 12:23:06,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48781460475008864 [2023-11-10 12:23:06,545 INFO L72 ComplementDD]: Start complementDD. Operand 104 states and 11009 transitions. [2023-11-10 12:23:06,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 11009 transitions. [2023-11-10 12:23:06,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:23:06,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 104 states and 11009 transitions. [2023-11-10 12:23:06,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 105 states, 104 states have (on average 105.85576923076923) internal successors, (11009), 104 states have internal predecessors, (11009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:06,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 105 states, 105 states have (on average 217.0) internal successors, (22785), 105 states have internal predecessors, (22785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:06,692 INFO L81 ComplementDD]: Finished complementDD. Result has 105 states, 105 states have (on average 217.0) internal successors, (22785), 105 states have internal predecessors, (22785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:06,692 INFO L175 Difference]: Start difference. First operand has 398 places, 717 transitions, 5943 flow. Second operand 104 states and 11009 transitions. [2023-11-10 12:23:06,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 1615 transitions, 15561 flow [2023-11-10 12:23:07,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 1615 transitions, 15021 flow, removed 215 selfloop flow, removed 41 redundant places. [2023-11-10 12:23:07,173 INFO L231 Difference]: Finished difference. Result has 469 places, 1184 transitions, 12583 flow [2023-11-10 12:23:07,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=5582, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=717, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=246, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=104, PETRI_FLOW=12583, PETRI_PLACES=469, PETRI_TRANSITIONS=1184} [2023-11-10 12:23:07,174 INFO L281 CegarLoopForPetriNet]: 198 programPoint places, 271 predicate places. [2023-11-10 12:23:07,174 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 1184 transitions, 12583 flow [2023-11-10 12:23:07,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 101.67692307692307) internal successors, (6609), 65 states have internal predecessors, (6609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:07,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:23:07,175 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:23:07,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-10 12:23:07,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:23:07,382 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 2 more)] === [2023-11-10 12:23:07,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:23:07,383 INFO L85 PathProgramCache]: Analyzing trace with hash 2037925091, now seen corresponding path program 3 times [2023-11-10 12:23:07,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:23:07,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385887270] [2023-11-10 12:23:07,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:23:07,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:23:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:23:08,373 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-10 12:23:08,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:23:08,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385887270] [2023-11-10 12:23:08,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385887270] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:23:08,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172803822] [2023-11-10 12:23:08,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-10 12:23:08,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:23:08,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:23:08,375 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:23:08,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-10 12:23:08,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-10 12:23:08,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:23:08,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 63 conjunts are in the unsatisfiable core [2023-11-10 12:23:08,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:23:09,619 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-10 12:23:10,224 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-10 12:23:10,355 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-10 12:23:10,457 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-10 12:23:10,544 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-10 12:23:10,709 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-11-10 12:23:10,980 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:23:10,980 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:23:11,764 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-10 12:23:11,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172803822] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:23:11,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:23:11,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 32, 11] total 51 [2023-11-10 12:23:11,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642507577] [2023-11-10 12:23:11,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:23:11,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-11-10 12:23:11,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:23:11,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-11-10 12:23:11,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=2318, Unknown=0, NotChecked=0, Total=2550 [2023-11-10 12:23:11,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 217 [2023-11-10 12:23:11,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 1184 transitions, 12583 flow. Second operand has 51 states, 51 states have (on average 98.31372549019608) internal successors, (5014), 51 states have internal predecessors, (5014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:11,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:23:11,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 217 [2023-11-10 12:23:11,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:23:22,013 INFO L124 PetriNetUnfolderBase]: 9724/21403 cut-off events. [2023-11-10 12:23:22,013 INFO L125 PetriNetUnfolderBase]: For 132873/133535 co-relation queries the response was YES. [2023-11-10 12:23:22,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90735 conditions, 21403 events. 9724/21403 cut-off events. For 132873/133535 co-relation queries the response was YES. Maximal size of possible extension queue 810. Compared 205942 event pairs, 686 based on Foata normal form. 452/20689 useless extension candidates. Maximal degree in co-relation 90663. Up to 6820 conditions per place. [2023-11-10 12:23:22,345 INFO L140 encePairwiseOnDemand]: 176/217 looper letters, 918 selfloop transitions, 485 changer transitions 76/1566 dead transitions. [2023-11-10 12:23:22,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 1566 transitions, 18282 flow [2023-11-10 12:23:22,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2023-11-10 12:23:22,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2023-11-10 12:23:22,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 8356 transitions. [2023-11-10 12:23:22,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4639387041252568 [2023-11-10 12:23:22,357 INFO L72 ComplementDD]: Start complementDD. Operand 83 states and 8356 transitions. [2023-11-10 12:23:22,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 83 states and 8356 transitions. [2023-11-10 12:23:22,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:23:22,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 83 states and 8356 transitions. [2023-11-10 12:23:22,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 84 states, 83 states have (on average 100.67469879518072) internal successors, (8356), 83 states have internal predecessors, (8356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:22,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 84 states, 84 states have (on average 217.0) internal successors, (18228), 84 states have internal predecessors, (18228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:22,388 INFO L81 ComplementDD]: Finished complementDD. Result has 84 states, 84 states have (on average 217.0) internal successors, (18228), 84 states have internal predecessors, (18228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:22,388 INFO L175 Difference]: Start difference. First operand has 469 places, 1184 transitions, 12583 flow. Second operand 83 states and 8356 transitions. [2023-11-10 12:23:22,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 1566 transitions, 18282 flow [2023-11-10 12:23:24,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 1566 transitions, 16492 flow, removed 803 selfloop flow, removed 45 redundant places. [2023-11-10 12:23:24,071 INFO L231 Difference]: Finished difference. Result has 509 places, 1304 transitions, 13985 flow [2023-11-10 12:23:24,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=10473, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=328, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=733, PETRI_DIFFERENCE_SUBTRAHEND_STATES=83, PETRI_FLOW=13985, PETRI_PLACES=509, PETRI_TRANSITIONS=1304} [2023-11-10 12:23:24,072 INFO L281 CegarLoopForPetriNet]: 198 programPoint places, 311 predicate places. [2023-11-10 12:23:24,073 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 1304 transitions, 13985 flow [2023-11-10 12:23:24,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 98.31372549019608) internal successors, (5014), 51 states have internal predecessors, (5014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:24,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:23:24,074 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:23:24,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-10 12:23:24,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-10 12:23:24,275 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 2 more)] === [2023-11-10 12:23:24,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:23:24,275 INFO L85 PathProgramCache]: Analyzing trace with hash 741169471, now seen corresponding path program 4 times [2023-11-10 12:23:24,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:23:24,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046739849] [2023-11-10 12:23:24,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:23:24,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:23:24,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:23:25,008 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-10 12:23:25,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:23:25,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046739849] [2023-11-10 12:23:25,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046739849] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:23:25,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460871235] [2023-11-10 12:23:25,008 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-10 12:23:25,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:23:25,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:23:25,013 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:23:25,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-10 12:23:25,169 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-10 12:23:25,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:23:25,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-10 12:23:25,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:23:25,674 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-10 12:23:25,861 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-10 12:23:25,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:23:26,031 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-10 12:23:26,032 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2023-11-10 12:23:26,151 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-10 12:23:26,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460871235] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:23:26,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:23:26,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 10] total 31 [2023-11-10 12:23:26,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900159778] [2023-11-10 12:23:26,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:23:26,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-10 12:23:26,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:23:26,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-10 12:23:26,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=798, Unknown=0, NotChecked=0, Total=930 [2023-11-10 12:23:26,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 217 [2023-11-10 12:23:26,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 1304 transitions, 13985 flow. Second operand has 31 states, 31 states have (on average 117.12903225806451) internal successors, (3631), 31 states have internal predecessors, (3631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:26,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:23:26,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 217 [2023-11-10 12:23:26,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:23:33,771 INFO L124 PetriNetUnfolderBase]: 12663/27655 cut-off events. [2023-11-10 12:23:33,771 INFO L125 PetriNetUnfolderBase]: For 125455/126896 co-relation queries the response was YES. [2023-11-10 12:23:34,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115883 conditions, 27655 events. 12663/27655 cut-off events. For 125455/126896 co-relation queries the response was YES. Maximal size of possible extension queue 1072. Compared 275192 event pairs, 556 based on Foata normal form. 363/26468 useless extension candidates. Maximal degree in co-relation 115805. Up to 13879 conditions per place. [2023-11-10 12:23:34,464 INFO L140 encePairwiseOnDemand]: 186/217 looper letters, 1109 selfloop transitions, 770 changer transitions 32/2009 dead transitions. [2023-11-10 12:23:34,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 2009 transitions, 24966 flow [2023-11-10 12:23:34,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-10 12:23:34,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-11-10 12:23:34,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 5543 transitions. [2023-11-10 12:23:34,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5552995391705069 [2023-11-10 12:23:34,471 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 5543 transitions. [2023-11-10 12:23:34,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 5543 transitions. [2023-11-10 12:23:34,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:23:34,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 5543 transitions. [2023-11-10 12:23:34,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 120.5) internal successors, (5543), 46 states have internal predecessors, (5543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:34,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 217.0) internal successors, (10199), 47 states have internal predecessors, (10199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:34,487 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 217.0) internal successors, (10199), 47 states have internal predecessors, (10199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:34,487 INFO L175 Difference]: Start difference. First operand has 509 places, 1304 transitions, 13985 flow. Second operand 46 states and 5543 transitions. [2023-11-10 12:23:34,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 2009 transitions, 24966 flow [2023-11-10 12:23:35,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 2009 transitions, 23806 flow, removed 431 selfloop flow, removed 51 redundant places. [2023-11-10 12:23:35,308 INFO L231 Difference]: Finished difference. Result has 519 places, 1811 transitions, 22136 flow [2023-11-10 12:23:35,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=13074, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=350, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=819, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=22136, PETRI_PLACES=519, PETRI_TRANSITIONS=1811} [2023-11-10 12:23:35,309 INFO L281 CegarLoopForPetriNet]: 198 programPoint places, 321 predicate places. [2023-11-10 12:23:35,309 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 1811 transitions, 22136 flow [2023-11-10 12:23:35,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 117.12903225806451) internal successors, (3631), 31 states have internal predecessors, (3631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:35,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:23:35,310 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:23:35,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-10 12:23:35,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:23:35,517 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 12:23:35,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:23:35,517 INFO L85 PathProgramCache]: Analyzing trace with hash -128413523, now seen corresponding path program 5 times [2023-11-10 12:23:35,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:23:35,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586950696] [2023-11-10 12:23:35,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:23:35,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:23:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:23:36,690 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:23:36,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:23:36,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586950696] [2023-11-10 12:23:36,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586950696] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:23:36,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892250645] [2023-11-10 12:23:36,691 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-10 12:23:36,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:23:36,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:23:36,692 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:23:36,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-10 12:23:36,820 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-10 12:23:36,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:23:36,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 57 conjunts are in the unsatisfiable core [2023-11-10 12:23:36,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:23:37,468 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-10 12:23:37,885 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-10 12:23:37,983 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-10 12:23:38,068 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-10 12:23:38,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-10 12:23:38,228 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-10 12:23:38,300 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-11-10 12:23:38,490 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:23:38,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:23:39,320 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_421 (Array Int Int)) (v_ArrVal_420 (Array Int Int)) (v_ArrVal_423 (Array Int Int)) (v_ArrVal_422 (Array Int Int))) (let ((.cse0 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_420) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_421) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_422)) (.cse1 (+ c_~x~0.offset 4))) (= (select (select .cse0 c_~x~0.base) .cse1) (select (select (store .cse0 |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_423) c_~x~0.base) .cse1)))) is different from false [2023-11-10 12:23:39,335 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_421 (Array Int Int)) (v_ArrVal_420 (Array Int Int)) (v_ArrVal_423 (Array Int Int)) (v_ArrVal_422 (Array Int Int))) (let ((.cse0 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_420) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_421) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_422)) (.cse1 (+ |c_ULTIMATE.start_main_#t~ret26#1.offset| 4))) (= (select (select .cse0 |c_ULTIMATE.start_main_#t~ret26#1.base|) .cse1) (select (select (store .cse0 |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_423) |c_ULTIMATE.start_main_#t~ret26#1.base|) .cse1)))) is different from false [2023-11-10 12:23:39,349 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_421 (Array Int Int)) (v_ArrVal_420 (Array Int Int)) (v_ArrVal_423 (Array Int Int)) (v_ArrVal_422 (Array Int Int))) (let ((.cse0 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_420) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_421) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_422)) (.cse1 (+ |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset| 4))) (= (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) .cse1) (select (select (store .cse0 |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_423) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) .cse1)))) is different from false [2023-11-10 12:23:39,355 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_421 (Array Int Int)) (v_ArrVal_420 (Array Int Int)) (v_ArrVal_423 (Array Int Int)) (v_ArrVal_422 (Array Int Int))) (let ((.cse0 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_420) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_421) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_422)) (.cse1 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_423) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) .cse1) (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) .cse1)))) is different from false [2023-11-10 12:23:39,390 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-10 12:23:39,390 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 49 [2023-11-10 12:23:39,399 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77814 treesize of output 73590 [2023-11-10 12:23:39,430 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 138 [2023-11-10 12:23:39,434 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 59 [2023-11-10 12:23:39,438 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 55 [2023-11-10 12:23:39,443 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 54 [2023-11-10 12:23:39,640 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 6 not checked. [2023-11-10 12:23:39,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892250645] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:23:39,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:23:39,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 27, 22] total 64 [2023-11-10 12:23:39,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094985924] [2023-11-10 12:23:39,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:23:39,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-11-10 12:23:39,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:23:39,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-11-10 12:23:39,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=3240, Unknown=44, NotChecked=476, Total=4032 [2023-11-10 12:23:39,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 217 [2023-11-10 12:23:39,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 1811 transitions, 22136 flow. Second operand has 64 states, 64 states have (on average 98.046875) internal successors, (6275), 64 states have internal predecessors, (6275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:39,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:23:39,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 217 [2023-11-10 12:23:39,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:23:55,324 INFO L124 PetriNetUnfolderBase]: 14642/32118 cut-off events. [2023-11-10 12:23:55,324 INFO L125 PetriNetUnfolderBase]: For 180267/182568 co-relation queries the response was YES. [2023-11-10 12:23:55,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148752 conditions, 32118 events. 14642/32118 cut-off events. For 180267/182568 co-relation queries the response was YES. Maximal size of possible extension queue 1274. Compared 329802 event pairs, 436 based on Foata normal form. 629/30962 useless extension candidates. Maximal degree in co-relation 148650. Up to 15755 conditions per place. [2023-11-10 12:23:55,990 INFO L140 encePairwiseOnDemand]: 179/217 looper letters, 1181 selfloop transitions, 1206 changer transitions 56/2530 dead transitions. [2023-11-10 12:23:55,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 2530 transitions, 35696 flow [2023-11-10 12:23:55,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-11-10 12:23:55,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2023-11-10 12:23:55,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 5751 transitions. [2023-11-10 12:23:55,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46495270434149893 [2023-11-10 12:23:55,997 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 5751 transitions. [2023-11-10 12:23:55,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 5751 transitions. [2023-11-10 12:23:55,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:23:55,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 5751 transitions. [2023-11-10 12:23:56,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 100.89473684210526) internal successors, (5751), 57 states have internal predecessors, (5751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:56,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 217.0) internal successors, (12586), 58 states have internal predecessors, (12586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:56,014 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 217.0) internal successors, (12586), 58 states have internal predecessors, (12586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:56,015 INFO L175 Difference]: Start difference. First operand has 519 places, 1811 transitions, 22136 flow. Second operand 57 states and 5751 transitions. [2023-11-10 12:23:56,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 2530 transitions, 35696 flow [2023-11-10 12:23:58,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 548 places, 2530 transitions, 34472 flow, removed 589 selfloop flow, removed 21 redundant places. [2023-11-10 12:23:58,056 INFO L231 Difference]: Finished difference. Result has 565 places, 2322 transitions, 32804 flow [2023-11-10 12:23:58,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=21252, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1810, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=784, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=822, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=32804, PETRI_PLACES=565, PETRI_TRANSITIONS=2322} [2023-11-10 12:23:58,058 INFO L281 CegarLoopForPetriNet]: 198 programPoint places, 367 predicate places. [2023-11-10 12:23:58,058 INFO L495 AbstractCegarLoop]: Abstraction has has 565 places, 2322 transitions, 32804 flow [2023-11-10 12:23:58,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 98.046875) internal successors, (6275), 64 states have internal predecessors, (6275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:58,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:23:58,060 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:23:58,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-10 12:23:58,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:23:58,264 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 12:23:58,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:23:58,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1605505705, now seen corresponding path program 2 times [2023-11-10 12:23:58,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:23:58,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632958559] [2023-11-10 12:23:58,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:23:58,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:23:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:23:59,214 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-10 12:23:59,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:23:59,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632958559] [2023-11-10 12:23:59,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632958559] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:23:59,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088780750] [2023-11-10 12:23:59,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-10 12:23:59,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:23:59,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:23:59,217 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:23:59,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-10 12:23:59,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-10 12:23:59,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:23:59,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 55 conjunts are in the unsatisfiable core [2023-11-10 12:23:59,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:24:00,116 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-10 12:24:00,669 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-10 12:24:00,820 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-10 12:24:00,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-10 12:24:00,981 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-10 12:24:01,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-10 12:24:01,086 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-10 12:24:01,194 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-10 12:24:01,195 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2023-11-10 12:24:01,520 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:24:01,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:24:02,721 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-10 12:24:02,722 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 50 [2023-11-10 12:24:02,732 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24630 treesize of output 22326 [2023-11-10 12:24:02,773 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 292 treesize of output 268 [2023-11-10 12:24:02,780 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 268 treesize of output 220 [2023-11-10 12:24:02,788 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 100 [2023-11-10 12:24:02,799 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 202 treesize of output 166 [2023-11-10 12:24:03,587 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 4 refuted. 6 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:24:03,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088780750] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:24:03,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:24:03,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 31, 29] total 71 [2023-11-10 12:24:03,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774797666] [2023-11-10 12:24:03,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:24:03,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2023-11-10 12:24:03,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:24:03,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2023-11-10 12:24:03,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=4555, Unknown=43, NotChecked=0, Total=4970 [2023-11-10 12:24:03,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 217 [2023-11-10 12:24:03,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 565 places, 2322 transitions, 32804 flow. Second operand has 71 states, 71 states have (on average 97.6056338028169) internal successors, (6930), 71 states have internal predecessors, (6930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:24:03,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:24:03,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 217 [2023-11-10 12:24:03,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:24:28,628 INFO L124 PetriNetUnfolderBase]: 20563/45398 cut-off events. [2023-11-10 12:24:28,628 INFO L125 PetriNetUnfolderBase]: For 331958/337479 co-relation queries the response was YES. [2023-11-10 12:24:29,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227950 conditions, 45398 events. 20563/45398 cut-off events. For 331958/337479 co-relation queries the response was YES. Maximal size of possible extension queue 1895. Compared 495797 event pairs, 1282 based on Foata normal form. 557/43125 useless extension candidates. Maximal degree in co-relation 227837. Up to 18134 conditions per place. [2023-11-10 12:24:30,277 INFO L140 encePairwiseOnDemand]: 178/217 looper letters, 2313 selfloop transitions, 869 changer transitions 46/3315 dead transitions. [2023-11-10 12:24:30,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 3315 transitions, 52470 flow [2023-11-10 12:24:30,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-11-10 12:24:30,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2023-11-10 12:24:30,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 7296 transitions. [2023-11-10 12:24:30,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46697388632872505 [2023-11-10 12:24:30,284 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 7296 transitions. [2023-11-10 12:24:30,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 7296 transitions. [2023-11-10 12:24:30,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:24:30,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 7296 transitions. [2023-11-10 12:24:30,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 73 states, 72 states have (on average 101.33333333333333) internal successors, (7296), 72 states have internal predecessors, (7296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:24:30,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 73 states, 73 states have (on average 217.0) internal successors, (15841), 73 states have internal predecessors, (15841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:24:30,308 INFO L81 ComplementDD]: Finished complementDD. Result has 73 states, 73 states have (on average 217.0) internal successors, (15841), 73 states have internal predecessors, (15841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:24:30,309 INFO L175 Difference]: Start difference. First operand has 565 places, 2322 transitions, 32804 flow. Second operand 72 states and 7296 transitions. [2023-11-10 12:24:30,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 3315 transitions, 52470 flow [2023-11-10 12:24:34,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 3315 transitions, 51362 flow, removed 481 selfloop flow, removed 38 redundant places. [2023-11-10 12:24:34,867 INFO L231 Difference]: Finished difference. Result has 613 places, 2706 transitions, 40963 flow [2023-11-10 12:24:34,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=31882, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=547, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1707, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=40963, PETRI_PLACES=613, PETRI_TRANSITIONS=2706} [2023-11-10 12:24:34,870 INFO L281 CegarLoopForPetriNet]: 198 programPoint places, 415 predicate places. [2023-11-10 12:24:34,870 INFO L495 AbstractCegarLoop]: Abstraction has has 613 places, 2706 transitions, 40963 flow [2023-11-10 12:24:34,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 97.6056338028169) internal successors, (6930), 71 states have internal predecessors, (6930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:24:34,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:24:34,871 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:24:34,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-10 12:24:35,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-10 12:24:35,080 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 12:24:35,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:24:35,080 INFO L85 PathProgramCache]: Analyzing trace with hash -2021469629, now seen corresponding path program 3 times [2023-11-10 12:24:35,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:24:35,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434008553] [2023-11-10 12:24:35,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:24:35,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:24:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:24:35,682 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-10 12:24:35,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:24:35,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434008553] [2023-11-10 12:24:35,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434008553] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:24:35,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133872346] [2023-11-10 12:24:35,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-10 12:24:35,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:24:35,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:24:35,684 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:24:35,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-10 12:24:35,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-10 12:24:35,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:24:35,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-10 12:24:35,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:24:36,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-10 12:24:36,419 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-10 12:24:36,507 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-10 12:24:36,687 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-10 12:24:36,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:24:36,931 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2023-11-10 12:24:37,198 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-10 12:24:37,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133872346] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:24:37,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:24:37,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 38 [2023-11-10 12:24:37,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606930119] [2023-11-10 12:24:37,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:24:37,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-10 12:24:37,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:24:37,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-10 12:24:37,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1241, Unknown=1, NotChecked=0, Total=1406 [2023-11-10 12:24:37,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 217 [2023-11-10 12:24:37,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 2706 transitions, 40963 flow. Second operand has 38 states, 38 states have (on average 116.39473684210526) internal successors, (4423), 38 states have internal predecessors, (4423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:24:37,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:24:37,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 217 [2023-11-10 12:24:37,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:24:58,271 INFO L124 PetriNetUnfolderBase]: 22634/50324 cut-off events. [2023-11-10 12:24:58,271 INFO L125 PetriNetUnfolderBase]: For 413089/420090 co-relation queries the response was YES. [2023-11-10 12:25:00,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264915 conditions, 50324 events. 22634/50324 cut-off events. For 413089/420090 co-relation queries the response was YES. Maximal size of possible extension queue 2093. Compared 560396 event pairs, 1342 based on Foata normal form. 849/47987 useless extension candidates. Maximal degree in co-relation 264790. Up to 27572 conditions per place. [2023-11-10 12:25:00,482 INFO L140 encePairwiseOnDemand]: 190/217 looper letters, 1986 selfloop transitions, 1124 changer transitions 39/3262 dead transitions. [2023-11-10 12:25:00,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 645 places, 3262 transitions, 55101 flow [2023-11-10 12:25:00,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-10 12:25:00,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-11-10 12:25:00,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 4947 transitions. [2023-11-10 12:25:00,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5560301225132067 [2023-11-10 12:25:00,485 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 4947 transitions. [2023-11-10 12:25:00,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 4947 transitions. [2023-11-10 12:25:00,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:25:00,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 4947 transitions. [2023-11-10 12:25:00,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 120.65853658536585) internal successors, (4947), 41 states have internal predecessors, (4947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:25:00,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 217.0) internal successors, (9114), 42 states have internal predecessors, (9114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:25:00,499 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 217.0) internal successors, (9114), 42 states have internal predecessors, (9114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:25:00,499 INFO L175 Difference]: Start difference. First operand has 613 places, 2706 transitions, 40963 flow. Second operand 41 states and 4947 transitions. [2023-11-10 12:25:00,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 645 places, 3262 transitions, 55101 flow [2023-11-10 12:25:07,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 605 places, 3262 transitions, 53361 flow, removed 641 selfloop flow, removed 40 redundant places. [2023-11-10 12:25:07,235 INFO L231 Difference]: Finished difference. Result has 627 places, 3097 transitions, 50003 flow [2023-11-10 12:25:07,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=39377, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2706, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=784, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1753, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=50003, PETRI_PLACES=627, PETRI_TRANSITIONS=3097} [2023-11-10 12:25:07,237 INFO L281 CegarLoopForPetriNet]: 198 programPoint places, 429 predicate places. [2023-11-10 12:25:07,237 INFO L495 AbstractCegarLoop]: Abstraction has has 627 places, 3097 transitions, 50003 flow [2023-11-10 12:25:07,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 116.39473684210526) internal successors, (4423), 38 states have internal predecessors, (4423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:25:07,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:25:07,238 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:25:07,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-10 12:25:07,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-10 12:25:07,439 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 12:25:07,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:25:07,440 INFO L85 PathProgramCache]: Analyzing trace with hash -2067578741, now seen corresponding path program 4 times [2023-11-10 12:25:07,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:25:07,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464034922] [2023-11-10 12:25:07,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:25:07,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:25:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:25:08,605 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-10 12:25:08,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:25:08,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464034922] [2023-11-10 12:25:08,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464034922] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:25:08,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291185244] [2023-11-10 12:25:08,605 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-10 12:25:08,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:25:08,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:25:08,606 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:25:08,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-10 12:25:08,736 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-10 12:25:08,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:25:08,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-10 12:25:08,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:25:09,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-10 12:25:09,473 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-10 12:25:09,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-10 12:25:09,595 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-10 12:25:09,683 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-11-10 12:25:09,878 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-10 12:25:09,879 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:25:10,217 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 214 treesize of output 160 [2023-11-10 12:25:10,221 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2023-11-10 12:25:10,224 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 28 [2023-11-10 12:25:10,802 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-10 12:25:10,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291185244] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:25:10,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:25:10,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22, 20] total 52 [2023-11-10 12:25:10,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745405400] [2023-11-10 12:25:10,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:25:10,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-11-10 12:25:10,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:25:10,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-11-10 12:25:10,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=2418, Unknown=3, NotChecked=0, Total=2652 [2023-11-10 12:25:10,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 217 [2023-11-10 12:25:10,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 627 places, 3097 transitions, 50003 flow. Second operand has 52 states, 52 states have (on average 102.5576923076923) internal successors, (5333), 52 states have internal predecessors, (5333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:25:10,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:25:10,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 217 [2023-11-10 12:25:10,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand