/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 16:26:54,958 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 16:26:54,996 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 16:26:55,013 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 16:26:55,014 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 16:26:55,014 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 16:26:55,014 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 16:26:55,015 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 16:26:55,015 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 16:26:55,015 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 16:26:55,015 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 16:26:55,016 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 16:26:55,016 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 16:26:55,016 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 16:26:55,016 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 16:26:55,017 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 16:26:55,017 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 16:26:55,017 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 16:26:55,017 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 16:26:55,017 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 16:26:55,018 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 16:26:55,018 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 16:26:55,018 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 16:26:55,019 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 16:26:55,019 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 16:26:55,019 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:26:55,019 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 16:26:55,020 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 16:26:55,020 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 16:26:55,020 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 16:26:55,020 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 16:26:55,020 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 16:26:55,021 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 16:26:55,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 16:26:55,185 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 16:26:55,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 16:26:55,188 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 16:26:55,188 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 16:26:55,189 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c [2023-11-17 16:26:56,307 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 16:26:56,440 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 16:26:56,440 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c [2023-11-17 16:26:56,446 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9132abdf1/2aff0d9f66784d468bc2368feeadd0a4/FLAG1ae384c40 [2023-11-17 16:26:56,460 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9132abdf1/2aff0d9f66784d468bc2368feeadd0a4 [2023-11-17 16:26:56,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 16:26:56,464 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 16:26:56,466 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 16:26:56,466 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 16:26:56,469 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 16:26:56,470 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:26:56" (1/1) ... [2023-11-17 16:26:56,470 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@795b3972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:26:56, skipping insertion in model container [2023-11-17 16:26:56,471 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:26:56" (1/1) ... [2023-11-17 16:26:56,489 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 16:26:56,622 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c[2063,2076] [2023-11-17 16:26:56,625 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:26:56,631 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 16:26:56,650 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c[2063,2076] [2023-11-17 16:26:56,655 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:26:56,660 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:26:56,660 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:26:56,665 INFO L206 MainTranslator]: Completed translation [2023-11-17 16:26:56,667 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:26:56 WrapperNode [2023-11-17 16:26:56,667 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 16:26:56,668 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 16:26:56,668 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 16:26:56,668 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 16:26:56,673 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:26:56" (1/1) ... [2023-11-17 16:26:56,678 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:26:56" (1/1) ... [2023-11-17 16:26:56,694 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2023-11-17 16:26:56,694 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 16:26:56,695 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 16:26:56,695 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 16:26:56,695 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 16:26:56,701 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:26:56" (1/1) ... [2023-11-17 16:26:56,702 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:26:56" (1/1) ... [2023-11-17 16:26:56,711 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:26:56" (1/1) ... [2023-11-17 16:26:56,711 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:26:56" (1/1) ... [2023-11-17 16:26:56,719 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:26:56" (1/1) ... [2023-11-17 16:26:56,721 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:26:56" (1/1) ... [2023-11-17 16:26:56,721 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:26:56" (1/1) ... [2023-11-17 16:26:56,722 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:26:56" (1/1) ... [2023-11-17 16:26:56,723 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 16:26:56,724 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 16:26:56,724 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 16:26:56,724 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 16:26:56,725 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:26:56" (1/1) ... [2023-11-17 16:26:56,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:26:56,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:26:56,750 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 16:26:56,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 16:26:56,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 16:26:56,772 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 16:26:56,773 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 16:26:56,773 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 16:26:56,773 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 16:26:56,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 16:26:56,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 16:26:56,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 16:26:56,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 16:26:56,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 16:26:56,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 16:26:56,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 16:26:56,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 16:26:56,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 16:26:56,774 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 16:26:56,835 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 16:26:56,837 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 16:26:56,949 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 16:26:56,981 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 16:26:56,981 INFO L307 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-17 16:26:56,982 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:26:56 BoogieIcfgContainer [2023-11-17 16:26:56,983 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 16:26:56,984 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 16:26:56,984 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 16:26:56,986 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 16:26:56,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 04:26:56" (1/3) ... [2023-11-17 16:26:56,987 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2b7524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:26:56, skipping insertion in model container [2023-11-17 16:26:56,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:26:56" (2/3) ... [2023-11-17 16:26:56,987 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2b7524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:26:56, skipping insertion in model container [2023-11-17 16:26:56,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:26:56" (3/3) ... [2023-11-17 16:26:56,988 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr.wvr.c [2023-11-17 16:26:56,999 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 16:26:56,999 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 16:26:57,000 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 16:26:57,041 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 16:26:57,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 82 transitions, 178 flow [2023-11-17 16:26:57,094 INFO L124 PetriNetUnfolderBase]: 6/80 cut-off events. [2023-11-17 16:26:57,094 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 16:26:57,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 80 events. 6/80 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2023-11-17 16:26:57,098 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 82 transitions, 178 flow [2023-11-17 16:26:57,100 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 71 transitions, 154 flow [2023-11-17 16:26:57,102 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 16:26:57,110 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 71 transitions, 154 flow [2023-11-17 16:26:57,112 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 71 transitions, 154 flow [2023-11-17 16:26:57,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 71 transitions, 154 flow [2023-11-17 16:26:57,141 INFO L124 PetriNetUnfolderBase]: 6/71 cut-off events. [2023-11-17 16:26:57,142 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 16:26:57,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 71 events. 6/71 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2023-11-17 16:26:57,143 INFO L119 LiptonReduction]: Number of co-enabled transitions 504 [2023-11-17 16:26:58,639 INFO L134 LiptonReduction]: Checked pairs total: 494 [2023-11-17 16:26:58,640 INFO L136 LiptonReduction]: Total number of compositions: 65 [2023-11-17 16:26:58,652 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 16:26:58,657 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;@4bab985c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 16:26:58,657 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-17 16:26:58,660 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 16:26:58,661 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2023-11-17 16:26:58,661 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 16:26:58,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:26:58,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:26:58,661 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:26:58,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:26:58,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1646618962, now seen corresponding path program 1 times [2023-11-17 16:26:58,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:26:58,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283573677] [2023-11-17 16:26:58,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:26:58,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:26:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:26:58,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:26:58,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:26:58,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283573677] [2023-11-17 16:26:58,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283573677] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:26:58,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:26:58,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 16:26:58,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249923376] [2023-11-17 16:26:58,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:26:58,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:26:58,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:26:58,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:26:58,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 16:26:58,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 147 [2023-11-17 16:26:58,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 42 flow. Second operand has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:26:58,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:26:58,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 147 [2023-11-17 16:26:58,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:26:59,003 INFO L124 PetriNetUnfolderBase]: 51/92 cut-off events. [2023-11-17 16:26:59,003 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-11-17 16:26:59,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 92 events. 51/92 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 185 event pairs, 24 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 150. Up to 73 conditions per place. [2023-11-17 16:26:59,005 INFO L140 encePairwiseOnDemand]: 143/147 looper letters, 19 selfloop transitions, 3 changer transitions 0/22 dead transitions. [2023-11-17 16:26:59,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 22 transitions, 103 flow [2023-11-17 16:26:59,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 16:26:59,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 16:26:59,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 275 transitions. [2023-11-17 16:26:59,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.467687074829932 [2023-11-17 16:26:59,014 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 275 transitions. [2023-11-17 16:26:59,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 275 transitions. [2023-11-17 16:26:59,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:26:59,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 275 transitions. [2023-11-17 16:26:59,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:26:59,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 147.0) internal successors, (735), 5 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:26:59,027 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 147.0) internal successors, (735), 5 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:26:59,028 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 42 flow. Second operand 4 states and 275 transitions. [2023-11-17 16:26:59,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 22 transitions, 103 flow [2023-11-17 16:26:59,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 22 transitions, 93 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 16:26:59,032 INFO L231 Difference]: Finished difference. Result has 20 places, 16 transitions, 48 flow [2023-11-17 16:26:59,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=20, PETRI_TRANSITIONS=16} [2023-11-17 16:26:59,035 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 0 predicate places. [2023-11-17 16:26:59,036 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 16 transitions, 48 flow [2023-11-17 16:26:59,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:26:59,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:26:59,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:26:59,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 16:26:59,037 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:26:59,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:26:59,037 INFO L85 PathProgramCache]: Analyzing trace with hash -2145046112, now seen corresponding path program 1 times [2023-11-17 16:26:59,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:26:59,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809397467] [2023-11-17 16:26:59,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:26:59,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:26:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:26:59,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:26:59,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:26:59,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809397467] [2023-11-17 16:26:59,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809397467] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:26:59,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:26:59,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 16:26:59,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111437651] [2023-11-17 16:26:59,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:26:59,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:26:59,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:26:59,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:26:59,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 16:26:59,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 147 [2023-11-17 16:26:59,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 16 transitions, 48 flow. Second operand has 4 states, 4 states have (on average 63.5) internal successors, (254), 4 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:26:59,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:26:59,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 147 [2023-11-17 16:26:59,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:26:59,163 INFO L124 PetriNetUnfolderBase]: 65/116 cut-off events. [2023-11-17 16:26:59,164 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-11-17 16:26:59,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 116 events. 65/116 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 268 event pairs, 33 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 70. Up to 92 conditions per place. [2023-11-17 16:26:59,165 INFO L140 encePairwiseOnDemand]: 143/147 looper letters, 21 selfloop transitions, 3 changer transitions 0/24 dead transitions. [2023-11-17 16:26:59,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 24 transitions, 123 flow [2023-11-17 16:26:59,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 16:26:59,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 16:26:59,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 263 transitions. [2023-11-17 16:26:59,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44727891156462585 [2023-11-17 16:26:59,167 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 263 transitions. [2023-11-17 16:26:59,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 263 transitions. [2023-11-17 16:26:59,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:26:59,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 263 transitions. [2023-11-17 16:26:59,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:26:59,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 147.0) internal successors, (735), 5 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:26:59,169 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 147.0) internal successors, (735), 5 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:26:59,169 INFO L175 Difference]: Start difference. First operand has 20 places, 16 transitions, 48 flow. Second operand 4 states and 263 transitions. [2023-11-17 16:26:59,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 24 transitions, 123 flow [2023-11-17 16:26:59,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 24 transitions, 113 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-17 16:26:59,171 INFO L231 Difference]: Finished difference. Result has 22 places, 17 transitions, 56 flow [2023-11-17 16:26:59,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=56, PETRI_PLACES=22, PETRI_TRANSITIONS=17} [2023-11-17 16:26:59,171 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 2 predicate places. [2023-11-17 16:26:59,172 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 17 transitions, 56 flow [2023-11-17 16:26:59,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.5) internal successors, (254), 4 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:26:59,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:26:59,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:26:59,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 16:26:59,172 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:26:59,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:26:59,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1926496266, now seen corresponding path program 1 times [2023-11-17 16:26:59,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:26:59,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109955893] [2023-11-17 16:26:59,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:26:59,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:26:59,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:26:59,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:26:59,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:26:59,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109955893] [2023-11-17 16:26:59,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109955893] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:26:59,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089851941] [2023-11-17 16:26:59,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:26:59,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:26:59,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:26:59,334 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:26:59,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 16:26:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:26:59,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 16:26:59,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:26:59,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:26:59,434 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:26:59,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:26:59,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089851941] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:26:59,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:26:59,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 3] total 4 [2023-11-17 16:26:59,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226226876] [2023-11-17 16:26:59,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:26:59,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:26:59,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:26:59,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:26:59,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-17 16:26:59,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 147 [2023-11-17 16:26:59,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 56 flow. Second operand has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:26:59,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:26:59,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 147 [2023-11-17 16:26:59,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:26:59,661 INFO L124 PetriNetUnfolderBase]: 117/211 cut-off events. [2023-11-17 16:26:59,661 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2023-11-17 16:26:59,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 573 conditions, 211 events. 117/211 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 655 event pairs, 19 based on Foata normal form. 1/166 useless extension candidates. Maximal degree in co-relation 143. Up to 77 conditions per place. [2023-11-17 16:26:59,662 INFO L140 encePairwiseOnDemand]: 143/147 looper letters, 32 selfloop transitions, 6 changer transitions 4/42 dead transitions. [2023-11-17 16:26:59,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 42 transitions, 216 flow [2023-11-17 16:26:59,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 16:26:59,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 16:26:59,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 315 transitions. [2023-11-17 16:26:59,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2023-11-17 16:26:59,664 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 315 transitions. [2023-11-17 16:26:59,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 315 transitions. [2023-11-17 16:26:59,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:26:59,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 315 transitions. [2023-11-17 16:26:59,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:26:59,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 147.0) internal successors, (735), 5 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:26:59,666 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 147.0) internal successors, (735), 5 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:26:59,666 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 56 flow. Second operand 4 states and 315 transitions. [2023-11-17 16:26:59,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 42 transitions, 216 flow [2023-11-17 16:26:59,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 42 transitions, 210 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-17 16:26:59,668 INFO L231 Difference]: Finished difference. Result has 25 places, 21 transitions, 94 flow [2023-11-17 16:26:59,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=25, PETRI_TRANSITIONS=21} [2023-11-17 16:26:59,668 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 5 predicate places. [2023-11-17 16:26:59,668 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 21 transitions, 94 flow [2023-11-17 16:26:59,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:26:59,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:26:59,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:26:59,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-17 16:26:59,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:26:59,874 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:26:59,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:26:59,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1719534460, now seen corresponding path program 2 times [2023-11-17 16:26:59,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:26:59,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882721223] [2023-11-17 16:26:59,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:26:59,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:26:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:26:59,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:26:59,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:26:59,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882721223] [2023-11-17 16:26:59,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882721223] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:26:59,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184090716] [2023-11-17 16:26:59,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:26:59,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:26:59,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:26:59,966 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:26:59,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 16:27:00,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:27:00,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:27:00,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-17 16:27:00,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:27:00,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:27:00,086 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:27:00,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:27:00,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184090716] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:27:00,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:27:00,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-17 16:27:00,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371511543] [2023-11-17 16:27:00,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:27:00,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 16:27:00,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:27:00,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 16:27:00,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-11-17 16:27:00,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 147 [2023-11-17 16:27:00,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 94 flow. Second operand has 11 states, 11 states have (on average 64.0) internal successors, (704), 11 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:00,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:27:00,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 147 [2023-11-17 16:27:00,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:27:00,264 INFO L124 PetriNetUnfolderBase]: 143/257 cut-off events. [2023-11-17 16:27:00,264 INFO L125 PetriNetUnfolderBase]: For 226/226 co-relation queries the response was YES. [2023-11-17 16:27:00,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 823 conditions, 257 events. 143/257 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 811 event pairs, 35 based on Foata normal form. 16/273 useless extension candidates. Maximal degree in co-relation 230. Up to 190 conditions per place. [2023-11-17 16:27:00,267 INFO L140 encePairwiseOnDemand]: 142/147 looper letters, 32 selfloop transitions, 8 changer transitions 0/40 dead transitions. [2023-11-17 16:27:00,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 40 transitions, 255 flow [2023-11-17 16:27:00,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:27:00,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:27:00,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 337 transitions. [2023-11-17 16:27:00,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45850340136054424 [2023-11-17 16:27:00,269 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 337 transitions. [2023-11-17 16:27:00,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 337 transitions. [2023-11-17 16:27:00,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:27:00,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 337 transitions. [2023-11-17 16:27:00,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 67.4) internal successors, (337), 5 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:00,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:00,272 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:00,272 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 94 flow. Second operand 5 states and 337 transitions. [2023-11-17 16:27:00,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 40 transitions, 255 flow [2023-11-17 16:27:00,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 40 transitions, 255 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 16:27:00,274 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 168 flow [2023-11-17 16:27:00,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=168, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-11-17 16:27:00,275 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 12 predicate places. [2023-11-17 16:27:00,275 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 168 flow [2023-11-17 16:27:00,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 64.0) internal successors, (704), 11 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:00,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:27:00,276 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:27:00,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-17 16:27:00,484 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,SelfDestructingSolverStorable3 [2023-11-17 16:27:00,484 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:27:00,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:27:00,485 INFO L85 PathProgramCache]: Analyzing trace with hash -513542114, now seen corresponding path program 3 times [2023-11-17 16:27:00,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:27:00,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361205768] [2023-11-17 16:27:00,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:27:00,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:27:00,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:27:00,595 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:00,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:27:00,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361205768] [2023-11-17 16:27:00,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361205768] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:27:00,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564950756] [2023-11-17 16:27:00,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:27:00,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:27:00,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:27:00,597 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:27:00,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 16:27:00,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 16:27:00,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:27:00,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-17 16:27:00,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:27:00,756 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:00,756 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:27:00,869 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:00,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564950756] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:27:00,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:27:00,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-17 16:27:00,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340467754] [2023-11-17 16:27:00,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:27:00,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 16:27:00,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:27:00,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 16:27:00,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-11-17 16:27:00,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 147 [2023-11-17 16:27:00,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 168 flow. Second operand has 16 states, 16 states have (on average 59.4375) internal successors, (951), 16 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:00,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:27:00,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 147 [2023-11-17 16:27:00,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:27:01,291 INFO L124 PetriNetUnfolderBase]: 209/372 cut-off events. [2023-11-17 16:27:01,291 INFO L125 PetriNetUnfolderBase]: For 633/633 co-relation queries the response was YES. [2023-11-17 16:27:01,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1407 conditions, 372 events. 209/372 cut-off events. For 633/633 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1356 event pairs, 8 based on Foata normal form. 12/384 useless extension candidates. Maximal degree in co-relation 749. Up to 127 conditions per place. [2023-11-17 16:27:01,293 INFO L140 encePairwiseOnDemand]: 140/147 looper letters, 65 selfloop transitions, 43 changer transitions 19/127 dead transitions. [2023-11-17 16:27:01,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 127 transitions, 886 flow [2023-11-17 16:27:01,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-17 16:27:01,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-17 16:27:01,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1486 transitions. [2023-11-17 16:27:01,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212018140589569 [2023-11-17 16:27:01,297 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1486 transitions. [2023-11-17 16:27:01,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1486 transitions. [2023-11-17 16:27:01,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:27:01,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1486 transitions. [2023-11-17 16:27:01,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 61.916666666666664) internal successors, (1486), 24 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:01,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 147.0) internal successors, (3675), 25 states have internal predecessors, (3675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:01,304 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 147.0) internal successors, (3675), 25 states have internal predecessors, (3675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:01,304 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 168 flow. Second operand 24 states and 1486 transitions. [2023-11-17 16:27:01,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 127 transitions, 886 flow [2023-11-17 16:27:01,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 127 transitions, 868 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-17 16:27:01,308 INFO L231 Difference]: Finished difference. Result has 60 places, 61 transitions, 523 flow [2023-11-17 16:27:01,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=523, PETRI_PLACES=60, PETRI_TRANSITIONS=61} [2023-11-17 16:27:01,309 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 40 predicate places. [2023-11-17 16:27:01,309 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 61 transitions, 523 flow [2023-11-17 16:27:01,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 59.4375) internal successors, (951), 16 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:01,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:27:01,309 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:27:01,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 16:27:01,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:27:01,515 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:27:01,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:27:01,515 INFO L85 PathProgramCache]: Analyzing trace with hash 281033618, now seen corresponding path program 4 times [2023-11-17 16:27:01,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:27:01,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938908097] [2023-11-17 16:27:01,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:27:01,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:27:01,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:27:01,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:01,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:27:01,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938908097] [2023-11-17 16:27:01,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938908097] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:27:01,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294910338] [2023-11-17 16:27:01,603 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:27:01,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:27:01,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:27:01,622 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:27:01,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 16:27:01,663 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:27:01,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:27:01,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 16:27:01,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:27:01,745 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:01,745 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:27:01,805 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:01,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294910338] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:27:01,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:27:01,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-17 16:27:01,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182412722] [2023-11-17 16:27:01,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:27:01,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 16:27:01,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:27:01,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 16:27:01,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-11-17 16:27:01,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 147 [2023-11-17 16:27:01,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 61 transitions, 523 flow. Second operand has 15 states, 15 states have (on average 59.4) internal successors, (891), 15 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:01,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:27:01,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 147 [2023-11-17 16:27:01,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:27:02,096 INFO L124 PetriNetUnfolderBase]: 245/435 cut-off events. [2023-11-17 16:27:02,096 INFO L125 PetriNetUnfolderBase]: For 2443/2443 co-relation queries the response was YES. [2023-11-17 16:27:02,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2153 conditions, 435 events. 245/435 cut-off events. For 2443/2443 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1606 event pairs, 9 based on Foata normal form. 30/465 useless extension candidates. Maximal degree in co-relation 1577. Up to 157 conditions per place. [2023-11-17 16:27:02,099 INFO L140 encePairwiseOnDemand]: 140/147 looper letters, 75 selfloop transitions, 62 changer transitions 0/137 dead transitions. [2023-11-17 16:27:02,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 137 transitions, 1304 flow [2023-11-17 16:27:02,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-17 16:27:02,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-17 16:27:02,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1176 transitions. [2023-11-17 16:27:02,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2023-11-17 16:27:02,102 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1176 transitions. [2023-11-17 16:27:02,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1176 transitions. [2023-11-17 16:27:02,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:27:02,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1176 transitions. [2023-11-17 16:27:02,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 61.89473684210526) internal successors, (1176), 19 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:02,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 147.0) internal successors, (2940), 20 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:02,107 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 147.0) internal successors, (2940), 20 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:02,107 INFO L175 Difference]: Start difference. First operand has 60 places, 61 transitions, 523 flow. Second operand 19 states and 1176 transitions. [2023-11-17 16:27:02,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 137 transitions, 1304 flow [2023-11-17 16:27:02,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 137 transitions, 1053 flow, removed 112 selfloop flow, removed 6 redundant places. [2023-11-17 16:27:02,114 INFO L231 Difference]: Finished difference. Result has 79 places, 98 transitions, 849 flow [2023-11-17 16:27:02,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=849, PETRI_PLACES=79, PETRI_TRANSITIONS=98} [2023-11-17 16:27:02,114 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 59 predicate places. [2023-11-17 16:27:02,114 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 98 transitions, 849 flow [2023-11-17 16:27:02,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 59.4) internal successors, (891), 15 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:02,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:27:02,115 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:27:02,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 16:27:02,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:27:02,320 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:27:02,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:27:02,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1592640530, now seen corresponding path program 5 times [2023-11-17 16:27:02,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:27:02,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892632140] [2023-11-17 16:27:02,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:27:02,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:27:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:27:02,411 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:02,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:27:02,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892632140] [2023-11-17 16:27:02,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892632140] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:27:02,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188919886] [2023-11-17 16:27:02,411 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:27:02,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:27:02,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:27:02,412 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) [2023-11-17 16:27:02,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-17 16:27:02,458 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-17 16:27:02,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:27:02,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 16:27:02,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:27:02,531 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:02,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:27:02,568 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:02,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188919886] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:27:02,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:27:02,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-17 16:27:02,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930200153] [2023-11-17 16:27:02,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:27:02,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 16:27:02,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:27:02,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 16:27:02,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2023-11-17 16:27:02,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 147 [2023-11-17 16:27:02,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 98 transitions, 849 flow. Second operand has 15 states, 15 states have (on average 59.0) internal successors, (885), 15 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:02,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:27:02,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 147 [2023-11-17 16:27:02,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:27:02,908 INFO L124 PetriNetUnfolderBase]: 338/578 cut-off events. [2023-11-17 16:27:02,908 INFO L125 PetriNetUnfolderBase]: For 5665/5665 co-relation queries the response was YES. [2023-11-17 16:27:02,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3249 conditions, 578 events. 338/578 cut-off events. For 5665/5665 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2258 event pairs, 19 based on Foata normal form. 16/594 useless extension candidates. Maximal degree in co-relation 3046. Up to 262 conditions per place. [2023-11-17 16:27:02,912 INFO L140 encePairwiseOnDemand]: 140/147 looper letters, 82 selfloop transitions, 95 changer transitions 2/179 dead transitions. [2023-11-17 16:27:02,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 179 transitions, 1883 flow [2023-11-17 16:27:02,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-17 16:27:02,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-17 16:27:02,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1290 transitions. [2023-11-17 16:27:02,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41788143828960156 [2023-11-17 16:27:02,915 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1290 transitions. [2023-11-17 16:27:02,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1290 transitions. [2023-11-17 16:27:02,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:27:02,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1290 transitions. [2023-11-17 16:27:02,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 61.42857142857143) internal successors, (1290), 21 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:02,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 147.0) internal successors, (3234), 22 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:02,921 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 147.0) internal successors, (3234), 22 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:02,921 INFO L175 Difference]: Start difference. First operand has 79 places, 98 transitions, 849 flow. Second operand 21 states and 1290 transitions. [2023-11-17 16:27:02,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 179 transitions, 1883 flow [2023-11-17 16:27:02,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 179 transitions, 1771 flow, removed 56 selfloop flow, removed 0 redundant places. [2023-11-17 16:27:02,936 INFO L231 Difference]: Finished difference. Result has 106 places, 141 transitions, 1510 flow [2023-11-17 16:27:02,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1510, PETRI_PLACES=106, PETRI_TRANSITIONS=141} [2023-11-17 16:27:02,937 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 86 predicate places. [2023-11-17 16:27:02,937 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 141 transitions, 1510 flow [2023-11-17 16:27:02,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 59.0) internal successors, (885), 15 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:02,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:27:02,937 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:27:02,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-17 16:27:03,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:27:03,143 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:27:03,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:27:03,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1860076362, now seen corresponding path program 6 times [2023-11-17 16:27:03,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:27:03,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582217164] [2023-11-17 16:27:03,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:27:03,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:27:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:27:03,238 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:03,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:27:03,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582217164] [2023-11-17 16:27:03,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582217164] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:27:03,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138753510] [2023-11-17 16:27:03,239 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:27:03,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:27:03,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:27:03,255 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) [2023-11-17 16:27:03,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-17 16:27:03,323 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-17 16:27:03,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:27:03,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 16:27:03,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:27:03,393 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:03,393 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:27:03,465 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:03,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138753510] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:27:03,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:27:03,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-17 16:27:03,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503819860] [2023-11-17 16:27:03,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:27:03,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 16:27:03,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:27:03,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 16:27:03,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2023-11-17 16:27:03,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 147 [2023-11-17 16:27:03,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 141 transitions, 1510 flow. Second operand has 16 states, 16 states have (on average 59.4375) internal successors, (951), 16 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:03,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:27:03,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 147 [2023-11-17 16:27:03,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:27:03,843 INFO L124 PetriNetUnfolderBase]: 348/618 cut-off events. [2023-11-17 16:27:03,843 INFO L125 PetriNetUnfolderBase]: For 9245/9245 co-relation queries the response was YES. [2023-11-17 16:27:03,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3580 conditions, 618 events. 348/618 cut-off events. For 9245/9245 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2610 event pairs, 7 based on Foata normal form. 30/648 useless extension candidates. Maximal degree in co-relation 3429. Up to 214 conditions per place. [2023-11-17 16:27:03,848 INFO L140 encePairwiseOnDemand]: 140/147 looper letters, 73 selfloop transitions, 109 changer transitions 3/185 dead transitions. [2023-11-17 16:27:03,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 185 transitions, 2083 flow [2023-11-17 16:27:03,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-17 16:27:03,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-17 16:27:03,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1414 transitions. [2023-11-17 16:27:03,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41821946169772256 [2023-11-17 16:27:03,851 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1414 transitions. [2023-11-17 16:27:03,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1414 transitions. [2023-11-17 16:27:03,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:27:03,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1414 transitions. [2023-11-17 16:27:03,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 61.47826086956522) internal successors, (1414), 23 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:03,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 147.0) internal successors, (3528), 24 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:03,858 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 147.0) internal successors, (3528), 24 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:03,858 INFO L175 Difference]: Start difference. First operand has 106 places, 141 transitions, 1510 flow. Second operand 23 states and 1414 transitions. [2023-11-17 16:27:03,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 185 transitions, 2083 flow [2023-11-17 16:27:03,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 185 transitions, 1840 flow, removed 102 selfloop flow, removed 9 redundant places. [2023-11-17 16:27:03,883 INFO L231 Difference]: Finished difference. Result has 122 places, 142 transitions, 1578 flow [2023-11-17 16:27:03,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=1201, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1578, PETRI_PLACES=122, PETRI_TRANSITIONS=142} [2023-11-17 16:27:03,886 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 102 predicate places. [2023-11-17 16:27:03,886 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 142 transitions, 1578 flow [2023-11-17 16:27:03,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 59.4375) internal successors, (951), 16 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:03,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:27:03,886 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:27:03,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-17 16:27:04,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:27:04,091 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:27:04,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:27:04,091 INFO L85 PathProgramCache]: Analyzing trace with hash 536917468, now seen corresponding path program 7 times [2023-11-17 16:27:04,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:27:04,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980104905] [2023-11-17 16:27:04,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:27:04,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:27:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:27:04,194 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:04,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:27:04,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980104905] [2023-11-17 16:27:04,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980104905] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:27:04,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632430857] [2023-11-17 16:27:04,195 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 16:27:04,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:27:04,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:27:04,196 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) [2023-11-17 16:27:04,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-17 16:27:04,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:27:04,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-17 16:27:04,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:27:04,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:04,317 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:27:04,388 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:04,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632430857] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:27:04,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:27:04,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-11-17 16:27:04,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411704029] [2023-11-17 16:27:04,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:27:04,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 16:27:04,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:27:04,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 16:27:04,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-11-17 16:27:04,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 147 [2023-11-17 16:27:04,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 142 transitions, 1578 flow. Second operand has 18 states, 18 states have (on average 59.27777777777778) internal successors, (1067), 18 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:04,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:27:04,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 147 [2023-11-17 16:27:04,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:27:04,856 INFO L124 PetriNetUnfolderBase]: 495/871 cut-off events. [2023-11-17 16:27:04,856 INFO L125 PetriNetUnfolderBase]: For 4647/4647 co-relation queries the response was YES. [2023-11-17 16:27:04,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4965 conditions, 871 events. 495/871 cut-off events. For 4647/4647 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4023 event pairs, 11 based on Foata normal form. 10/881 useless extension candidates. Maximal degree in co-relation 4815. Up to 262 conditions per place. [2023-11-17 16:27:04,862 INFO L140 encePairwiseOnDemand]: 140/147 looper letters, 110 selfloop transitions, 150 changer transitions 0/260 dead transitions. [2023-11-17 16:27:04,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 260 transitions, 3066 flow [2023-11-17 16:27:04,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-17 16:27:04,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-11-17 16:27:04,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1776 transitions. [2023-11-17 16:27:04,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166080225193526 [2023-11-17 16:27:04,865 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1776 transitions. [2023-11-17 16:27:04,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1776 transitions. [2023-11-17 16:27:04,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:27:04,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1776 transitions. [2023-11-17 16:27:04,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 61.241379310344826) internal successors, (1776), 29 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:04,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 147.0) internal successors, (4410), 30 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:04,873 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 147.0) internal successors, (4410), 30 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:04,873 INFO L175 Difference]: Start difference. First operand has 122 places, 142 transitions, 1578 flow. Second operand 29 states and 1776 transitions. [2023-11-17 16:27:04,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 260 transitions, 3066 flow [2023-11-17 16:27:04,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 260 transitions, 2830 flow, removed 21 selfloop flow, removed 17 redundant places. [2023-11-17 16:27:04,893 INFO L231 Difference]: Finished difference. Result has 139 places, 208 transitions, 2584 flow [2023-11-17 16:27:04,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=1429, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2584, PETRI_PLACES=139, PETRI_TRANSITIONS=208} [2023-11-17 16:27:04,894 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 119 predicate places. [2023-11-17 16:27:04,894 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 208 transitions, 2584 flow [2023-11-17 16:27:04,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 59.27777777777778) internal successors, (1067), 18 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:04,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:27:04,895 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:27:04,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-17 16:27:05,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:27:05,118 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:27:05,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:27:05,119 INFO L85 PathProgramCache]: Analyzing trace with hash 2011453820, now seen corresponding path program 8 times [2023-11-17 16:27:05,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:27:05,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034667782] [2023-11-17 16:27:05,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:27:05,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:27:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:27:05,224 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:05,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:27:05,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034667782] [2023-11-17 16:27:05,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034667782] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:27:05,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181681046] [2023-11-17 16:27:05,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:27:05,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:27:05,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:27:05,225 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) [2023-11-17 16:27:05,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-17 16:27:05,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:27:05,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:27:05,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-17 16:27:05,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:27:05,352 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:05,352 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:27:05,422 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:05,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181681046] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:27:05,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:27:05,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-11-17 16:27:05,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886290561] [2023-11-17 16:27:05,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:27:05,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 16:27:05,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:27:05,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 16:27:05,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-11-17 16:27:05,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 147 [2023-11-17 16:27:05,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 208 transitions, 2584 flow. Second operand has 18 states, 18 states have (on average 59.05555555555556) internal successors, (1063), 18 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:05,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:27:05,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 147 [2023-11-17 16:27:05,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:27:05,872 INFO L124 PetriNetUnfolderBase]: 579/1033 cut-off events. [2023-11-17 16:27:05,872 INFO L125 PetriNetUnfolderBase]: For 8038/8038 co-relation queries the response was YES. [2023-11-17 16:27:05,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6543 conditions, 1033 events. 579/1033 cut-off events. For 8038/8038 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5078 event pairs, 19 based on Foata normal form. 42/1075 useless extension candidates. Maximal degree in co-relation 6122. Up to 731 conditions per place. [2023-11-17 16:27:05,881 INFO L140 encePairwiseOnDemand]: 140/147 looper letters, 211 selfloop transitions, 78 changer transitions 1/290 dead transitions. [2023-11-17 16:27:05,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 290 transitions, 3868 flow [2023-11-17 16:27:05,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-17 16:27:05,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-17 16:27:05,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1484 transitions. [2023-11-17 16:27:05,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42063492063492064 [2023-11-17 16:27:05,883 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1484 transitions. [2023-11-17 16:27:05,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1484 transitions. [2023-11-17 16:27:05,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:27:05,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1484 transitions. [2023-11-17 16:27:05,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 61.833333333333336) internal successors, (1484), 24 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:05,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 147.0) internal successors, (3675), 25 states have internal predecessors, (3675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:05,889 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 147.0) internal successors, (3675), 25 states have internal predecessors, (3675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:05,889 INFO L175 Difference]: Start difference. First operand has 139 places, 208 transitions, 2584 flow. Second operand 24 states and 1484 transitions. [2023-11-17 16:27:05,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 290 transitions, 3868 flow [2023-11-17 16:27:05,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 290 transitions, 3704 flow, removed 42 selfloop flow, removed 13 redundant places. [2023-11-17 16:27:05,923 INFO L231 Difference]: Finished difference. Result has 160 places, 240 transitions, 3150 flow [2023-11-17 16:27:05,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=2422, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3150, PETRI_PLACES=160, PETRI_TRANSITIONS=240} [2023-11-17 16:27:05,923 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 140 predicate places. [2023-11-17 16:27:05,924 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 240 transitions, 3150 flow [2023-11-17 16:27:05,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 59.05555555555556) internal successors, (1063), 18 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:05,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:27:05,924 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:27:05,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-17 16:27:06,129 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,SelfDestructingSolverStorable9 [2023-11-17 16:27:06,129 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:27:06,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:27:06,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1154564440, now seen corresponding path program 9 times [2023-11-17 16:27:06,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:27:06,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84030803] [2023-11-17 16:27:06,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:27:06,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:27:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:27:06,240 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:06,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:27:06,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84030803] [2023-11-17 16:27:06,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84030803] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:27:06,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325539336] [2023-11-17 16:27:06,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:27:06,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:27:06,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:27:06,258 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) [2023-11-17 16:27:06,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-17 16:27:06,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-17 16:27:06,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:27:06,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 16:27:06,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:27:06,389 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:06,389 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:27:06,453 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:06,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325539336] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:27:06,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:27:06,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 16 [2023-11-17 16:27:06,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48259839] [2023-11-17 16:27:06,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:27:06,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 16:27:06,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:27:06,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 16:27:06,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-17 16:27:06,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 147 [2023-11-17 16:27:06,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 240 transitions, 3150 flow. Second operand has 16 states, 16 states have (on average 59.25) internal successors, (948), 16 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:06,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:27:06,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 147 [2023-11-17 16:27:06,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:27:06,741 INFO L124 PetriNetUnfolderBase]: 573/1007 cut-off events. [2023-11-17 16:27:06,741 INFO L125 PetriNetUnfolderBase]: For 9451/9451 co-relation queries the response was YES. [2023-11-17 16:27:06,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6887 conditions, 1007 events. 573/1007 cut-off events. For 9451/9451 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4862 event pairs, 21 based on Foata normal form. 6/1013 useless extension candidates. Maximal degree in co-relation 6508. Up to 782 conditions per place. [2023-11-17 16:27:06,748 INFO L140 encePairwiseOnDemand]: 140/147 looper letters, 195 selfloop transitions, 69 changer transitions 4/268 dead transitions. [2023-11-17 16:27:06,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 268 transitions, 3985 flow [2023-11-17 16:27:06,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 16:27:06,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 16:27:06,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 858 transitions. [2023-11-17 16:27:06,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41690962099125367 [2023-11-17 16:27:06,749 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 858 transitions. [2023-11-17 16:27:06,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 858 transitions. [2023-11-17 16:27:06,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:27:06,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 858 transitions. [2023-11-17 16:27:06,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 61.285714285714285) internal successors, (858), 14 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:06,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 147.0) internal successors, (2205), 15 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:06,753 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 147.0) internal successors, (2205), 15 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:06,753 INFO L175 Difference]: Start difference. First operand has 160 places, 240 transitions, 3150 flow. Second operand 14 states and 858 transitions. [2023-11-17 16:27:06,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 268 transitions, 3985 flow [2023-11-17 16:27:06,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 268 transitions, 3708 flow, removed 110 selfloop flow, removed 9 redundant places. [2023-11-17 16:27:06,797 INFO L231 Difference]: Finished difference. Result has 166 places, 244 transitions, 3129 flow [2023-11-17 16:27:06,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=2891, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3129, PETRI_PLACES=166, PETRI_TRANSITIONS=244} [2023-11-17 16:27:06,797 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 146 predicate places. [2023-11-17 16:27:06,797 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 244 transitions, 3129 flow [2023-11-17 16:27:06,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 59.25) internal successors, (948), 16 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:06,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:27:06,800 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:27:06,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-17 16:27:07,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:27:07,004 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:27:07,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:27:07,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1231867616, now seen corresponding path program 10 times [2023-11-17 16:27:07,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:27:07,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749504985] [2023-11-17 16:27:07,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:27:07,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:27:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:27:07,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:07,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:27:07,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749504985] [2023-11-17 16:27:07,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749504985] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:27:07,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297828737] [2023-11-17 16:27:07,099 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:27:07,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:27:07,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:27:07,100 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) [2023-11-17 16:27:07,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-17 16:27:07,151 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:27:07,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:27:07,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 16:27:07,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:27:07,173 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:07,173 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:27:07,241 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:07,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297828737] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:27:07,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:27:07,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 5] total 8 [2023-11-17 16:27:07,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349574944] [2023-11-17 16:27:07,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:27:07,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 16:27:07,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:27:07,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 16:27:07,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-17 16:27:07,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 147 [2023-11-17 16:27:07,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 244 transitions, 3129 flow. Second operand has 10 states, 10 states have (on average 64.4) internal successors, (644), 10 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:07,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:27:07,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 147 [2023-11-17 16:27:07,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:27:07,499 INFO L124 PetriNetUnfolderBase]: 836/1459 cut-off events. [2023-11-17 16:27:07,499 INFO L125 PetriNetUnfolderBase]: For 13450/13450 co-relation queries the response was YES. [2023-11-17 16:27:07,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9868 conditions, 1459 events. 836/1459 cut-off events. For 13450/13450 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 7655 event pairs, 30 based on Foata normal form. 1/1460 useless extension candidates. Maximal degree in co-relation 9387. Up to 767 conditions per place. [2023-11-17 16:27:07,514 INFO L140 encePairwiseOnDemand]: 143/147 looper letters, 239 selfloop transitions, 98 changer transitions 45/382 dead transitions. [2023-11-17 16:27:07,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 382 transitions, 5576 flow [2023-11-17 16:27:07,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:27:07,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:27:07,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 421 transitions. [2023-11-17 16:27:07,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47732426303854875 [2023-11-17 16:27:07,515 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 421 transitions. [2023-11-17 16:27:07,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 421 transitions. [2023-11-17 16:27:07,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:27:07,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 421 transitions. [2023-11-17 16:27:07,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:07,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 147.0) internal successors, (1029), 7 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:07,518 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 147.0) internal successors, (1029), 7 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:07,518 INFO L175 Difference]: Start difference. First operand has 166 places, 244 transitions, 3129 flow. Second operand 6 states and 421 transitions. [2023-11-17 16:27:07,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 382 transitions, 5576 flow [2023-11-17 16:27:07,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 382 transitions, 5340 flow, removed 52 selfloop flow, removed 7 redundant places. [2023-11-17 16:27:07,585 INFO L231 Difference]: Finished difference. Result has 166 places, 294 transitions, 4070 flow [2023-11-17 16:27:07,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=2991, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4070, PETRI_PLACES=166, PETRI_TRANSITIONS=294} [2023-11-17 16:27:07,586 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 146 predicate places. [2023-11-17 16:27:07,586 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 294 transitions, 4070 flow [2023-11-17 16:27:07,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 64.4) internal successors, (644), 10 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:07,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:27:07,587 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:27:07,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-17 16:27:07,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-17 16:27:07,791 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:27:07,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:27:07,792 INFO L85 PathProgramCache]: Analyzing trace with hash 536202016, now seen corresponding path program 11 times [2023-11-17 16:27:07,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:27:07,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579861262] [2023-11-17 16:27:07,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:27:07,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:27:07,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:27:07,923 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:07,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:27:07,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579861262] [2023-11-17 16:27:07,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579861262] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:27:07,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455097731] [2023-11-17 16:27:07,924 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:27:07,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:27:07,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:27:07,939 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:27:07,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-17 16:27:08,022 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-17 16:27:08,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:27:08,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 16:27:08,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:27:08,045 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:27:08,045 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:27:08,093 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:27:08,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455097731] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:27:08,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:27:08,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 12 [2023-11-17 16:27:08,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949505154] [2023-11-17 16:27:08,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:27:08,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 16:27:08,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:27:08,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 16:27:08,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-11-17 16:27:08,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 147 [2023-11-17 16:27:08,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 294 transitions, 4070 flow. Second operand has 13 states, 13 states have (on average 59.76923076923077) internal successors, (777), 13 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:08,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:27:08,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 147 [2023-11-17 16:27:08,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:27:08,518 INFO L124 PetriNetUnfolderBase]: 807/1444 cut-off events. [2023-11-17 16:27:08,518 INFO L125 PetriNetUnfolderBase]: For 16639/16639 co-relation queries the response was YES. [2023-11-17 16:27:08,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10438 conditions, 1444 events. 807/1444 cut-off events. For 16639/16639 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 7813 event pairs, 43 based on Foata normal form. 34/1478 useless extension candidates. Maximal degree in co-relation 10094. Up to 1095 conditions per place. [2023-11-17 16:27:08,532 INFO L140 encePairwiseOnDemand]: 140/147 looper letters, 264 selfloop transitions, 86 changer transitions 16/366 dead transitions. [2023-11-17 16:27:08,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 366 transitions, 5568 flow [2023-11-17 16:27:08,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-17 16:27:08,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-17 16:27:08,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1187 transitions. [2023-11-17 16:27:08,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42499104905119944 [2023-11-17 16:27:08,534 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1187 transitions. [2023-11-17 16:27:08,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1187 transitions. [2023-11-17 16:27:08,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:27:08,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1187 transitions. [2023-11-17 16:27:08,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 62.473684210526315) internal successors, (1187), 19 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:08,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 147.0) internal successors, (2940), 20 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:08,539 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 147.0) internal successors, (2940), 20 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:08,539 INFO L175 Difference]: Start difference. First operand has 166 places, 294 transitions, 4070 flow. Second operand 19 states and 1187 transitions. [2023-11-17 16:27:08,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 366 transitions, 5568 flow [2023-11-17 16:27:08,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 366 transitions, 5483 flow, removed 28 selfloop flow, removed 3 redundant places. [2023-11-17 16:27:08,598 INFO L231 Difference]: Finished difference. Result has 188 places, 309 transitions, 4580 flow [2023-11-17 16:27:08,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=4013, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4580, PETRI_PLACES=188, PETRI_TRANSITIONS=309} [2023-11-17 16:27:08,599 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 168 predicate places. [2023-11-17 16:27:08,599 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 309 transitions, 4580 flow [2023-11-17 16:27:08,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 59.76923076923077) internal successors, (777), 13 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:08,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:27:08,610 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:27:08,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-17 16:27:08,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-17 16:27:08,814 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:27:08,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:27:08,815 INFO L85 PathProgramCache]: Analyzing trace with hash -203574864, now seen corresponding path program 12 times [2023-11-17 16:27:08,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:27:08,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997987537] [2023-11-17 16:27:08,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:27:08,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:27:08,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:27:08,939 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:08,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:27:08,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997987537] [2023-11-17 16:27:08,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997987537] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:27:08,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034331704] [2023-11-17 16:27:08,939 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:27:08,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:27:08,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:27:08,940 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:27:08,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-17 16:27:08,996 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 16:27:08,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:27:08,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 16:27:08,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:27:09,072 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:09,073 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:27:09,260 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:09,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034331704] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:27:09,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:27:09,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2023-11-17 16:27:09,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102763518] [2023-11-17 16:27:09,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:27:09,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-17 16:27:09,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:27:09,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-17 16:27:09,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2023-11-17 16:27:09,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 147 [2023-11-17 16:27:09,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 309 transitions, 4580 flow. Second operand has 21 states, 21 states have (on average 59.19047619047619) internal successors, (1243), 21 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:09,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:27:09,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 147 [2023-11-17 16:27:09,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:27:09,993 INFO L124 PetriNetUnfolderBase]: 1056/1885 cut-off events. [2023-11-17 16:27:09,993 INFO L125 PetriNetUnfolderBase]: For 25405/25405 co-relation queries the response was YES. [2023-11-17 16:27:10,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14186 conditions, 1885 events. 1056/1885 cut-off events. For 25405/25405 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 10695 event pairs, 2 based on Foata normal form. 18/1903 useless extension candidates. Maximal degree in co-relation 13810. Up to 550 conditions per place. [2023-11-17 16:27:10,016 INFO L140 encePairwiseOnDemand]: 140/147 looper letters, 137 selfloop transitions, 353 changer transitions 34/524 dead transitions. [2023-11-17 16:27:10,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 524 transitions, 8186 flow [2023-11-17 16:27:10,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-17 16:27:10,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-11-17 16:27:10,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2097 transitions. [2023-11-17 16:27:10,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41956782713085233 [2023-11-17 16:27:10,020 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 2097 transitions. [2023-11-17 16:27:10,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 2097 transitions. [2023-11-17 16:27:10,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:27:10,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 2097 transitions. [2023-11-17 16:27:10,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 61.6764705882353) internal successors, (2097), 34 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:10,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 147.0) internal successors, (5145), 35 states have internal predecessors, (5145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:10,027 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 147.0) internal successors, (5145), 35 states have internal predecessors, (5145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:10,028 INFO L175 Difference]: Start difference. First operand has 188 places, 309 transitions, 4580 flow. Second operand 34 states and 2097 transitions. [2023-11-17 16:27:10,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 524 transitions, 8186 flow [2023-11-17 16:27:10,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 524 transitions, 8028 flow, removed 25 selfloop flow, removed 7 redundant places. [2023-11-17 16:27:10,132 INFO L231 Difference]: Finished difference. Result has 223 places, 415 transitions, 7160 flow [2023-11-17 16:27:10,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=4445, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=248, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=7160, PETRI_PLACES=223, PETRI_TRANSITIONS=415} [2023-11-17 16:27:10,133 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 203 predicate places. [2023-11-17 16:27:10,133 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 415 transitions, 7160 flow [2023-11-17 16:27:10,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 59.19047619047619) internal successors, (1243), 21 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:10,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:27:10,134 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:27:10,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-17 16:27:10,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-17 16:27:10,339 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:27:10,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:27:10,340 INFO L85 PathProgramCache]: Analyzing trace with hash -511487398, now seen corresponding path program 13 times [2023-11-17 16:27:10,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:27:10,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181137400] [2023-11-17 16:27:10,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:27:10,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:27:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:27:10,496 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:10,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:27:10,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181137400] [2023-11-17 16:27:10,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181137400] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:27:10,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926307635] [2023-11-17 16:27:10,497 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 16:27:10,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:27:10,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:27:10,498 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:27:10,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-17 16:27:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:27:10,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 16:27:10,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:27:10,638 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:10,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:27:10,791 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:10,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926307635] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:27:10,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:27:10,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-11-17 16:27:10,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268202646] [2023-11-17 16:27:10,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:27:10,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-17 16:27:10,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:27:10,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-17 16:27:10,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2023-11-17 16:27:10,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 147 [2023-11-17 16:27:10,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 415 transitions, 7160 flow. Second operand has 22 states, 22 states have (on average 59.18181818181818) internal successors, (1302), 22 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:10,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:27:10,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 147 [2023-11-17 16:27:10,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:27:11,563 INFO L124 PetriNetUnfolderBase]: 1167/2014 cut-off events. [2023-11-17 16:27:11,563 INFO L125 PetriNetUnfolderBase]: For 36020/36020 co-relation queries the response was YES. [2023-11-17 16:27:11,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17257 conditions, 2014 events. 1167/2014 cut-off events. For 36020/36020 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 10951 event pairs, 23 based on Foata normal form. 32/2046 useless extension candidates. Maximal degree in co-relation 16603. Up to 691 conditions per place. [2023-11-17 16:27:11,579 INFO L140 encePairwiseOnDemand]: 140/147 looper letters, 160 selfloop transitions, 387 changer transitions 2/549 dead transitions. [2023-11-17 16:27:11,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 549 transitions, 9953 flow [2023-11-17 16:27:11,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-17 16:27:11,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-11-17 16:27:11,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1967 transitions. [2023-11-17 16:27:11,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4181547619047619 [2023-11-17 16:27:11,582 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1967 transitions. [2023-11-17 16:27:11,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1967 transitions. [2023-11-17 16:27:11,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:27:11,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1967 transitions. [2023-11-17 16:27:11,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 61.46875) internal successors, (1967), 32 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:11,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 147.0) internal successors, (4851), 33 states have internal predecessors, (4851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:11,589 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 147.0) internal successors, (4851), 33 states have internal predecessors, (4851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:11,589 INFO L175 Difference]: Start difference. First operand has 223 places, 415 transitions, 7160 flow. Second operand 32 states and 1967 transitions. [2023-11-17 16:27:11,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 549 transitions, 9953 flow [2023-11-17 16:27:11,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 549 transitions, 9451 flow, removed 223 selfloop flow, removed 9 redundant places. [2023-11-17 16:27:11,746 INFO L231 Difference]: Finished difference. Result has 254 places, 484 transitions, 9113 flow [2023-11-17 16:27:11,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=6821, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=323, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=9113, PETRI_PLACES=254, PETRI_TRANSITIONS=484} [2023-11-17 16:27:11,747 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 234 predicate places. [2023-11-17 16:27:11,747 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 484 transitions, 9113 flow [2023-11-17 16:27:11,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 59.18181818181818) internal successors, (1302), 22 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:11,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:27:11,748 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:27:11,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-17 16:27:11,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-17 16:27:11,952 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:27:11,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:27:11,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1833579958, now seen corresponding path program 14 times [2023-11-17 16:27:11,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:27:11,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639903287] [2023-11-17 16:27:11,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:27:11,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:27:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:27:12,074 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:12,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:27:12,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639903287] [2023-11-17 16:27:12,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639903287] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:27:12,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215331944] [2023-11-17 16:27:12,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:27:12,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:27:12,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:27:12,077 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:27:12,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-17 16:27:12,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:27:12,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:27:12,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 16:27:12,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:27:12,226 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:12,227 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:27:12,366 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:12,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215331944] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:27:12,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:27:12,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-11-17 16:27:12,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263681699] [2023-11-17 16:27:12,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:27:12,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-17 16:27:12,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:27:12,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-17 16:27:12,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2023-11-17 16:27:12,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 147 [2023-11-17 16:27:12,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 484 transitions, 9113 flow. Second operand has 22 states, 22 states have (on average 59.18181818181818) internal successors, (1302), 22 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:12,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:27:12,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 147 [2023-11-17 16:27:12,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:27:13,240 INFO L124 PetriNetUnfolderBase]: 1312/2279 cut-off events. [2023-11-17 16:27:13,240 INFO L125 PetriNetUnfolderBase]: For 46510/46510 co-relation queries the response was YES. [2023-11-17 16:27:13,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20444 conditions, 2279 events. 1312/2279 cut-off events. For 46510/46510 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 12915 event pairs, 11 based on Foata normal form. 36/2315 useless extension candidates. Maximal degree in co-relation 19995. Up to 631 conditions per place. [2023-11-17 16:27:13,264 INFO L140 encePairwiseOnDemand]: 140/147 looper letters, 152 selfloop transitions, 448 changer transitions 15/615 dead transitions. [2023-11-17 16:27:13,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 615 transitions, 12084 flow [2023-11-17 16:27:13,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-17 16:27:13,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-11-17 16:27:13,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2026 transitions. [2023-11-17 16:27:13,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176458462172748 [2023-11-17 16:27:13,266 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2026 transitions. [2023-11-17 16:27:13,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2026 transitions. [2023-11-17 16:27:13,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:27:13,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2026 transitions. [2023-11-17 16:27:13,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 61.39393939393939) internal successors, (2026), 33 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:13,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 147.0) internal successors, (4998), 34 states have internal predecessors, (4998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:13,274 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 147.0) internal successors, (4998), 34 states have internal predecessors, (4998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:13,274 INFO L175 Difference]: Start difference. First operand has 254 places, 484 transitions, 9113 flow. Second operand 33 states and 2026 transitions. [2023-11-17 16:27:13,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 615 transitions, 12084 flow [2023-11-17 16:27:13,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 615 transitions, 11785 flow, removed 112 selfloop flow, removed 10 redundant places. [2023-11-17 16:27:13,513 INFO L231 Difference]: Finished difference. Result has 284 places, 536 transitions, 11066 flow [2023-11-17 16:27:13,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=8888, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=396, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=11066, PETRI_PLACES=284, PETRI_TRANSITIONS=536} [2023-11-17 16:27:13,513 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 264 predicate places. [2023-11-17 16:27:13,514 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 536 transitions, 11066 flow [2023-11-17 16:27:13,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 59.18181818181818) internal successors, (1302), 22 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:13,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:27:13,514 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:27:13,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-17 16:27:13,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:27:13,720 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:27:13,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:27:13,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1149780426, now seen corresponding path program 15 times [2023-11-17 16:27:13,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:27:13,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528444943] [2023-11-17 16:27:13,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:27:13,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:27:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:27:13,834 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:13,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:27:13,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528444943] [2023-11-17 16:27:13,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528444943] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:27:13,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736776952] [2023-11-17 16:27:13,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:27:13,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:27:13,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:27:13,835 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:27:13,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-17 16:27:13,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-17 16:27:13,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:27:13,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 16:27:13,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:27:13,981 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:13,981 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:27:14,145 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:14,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736776952] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:27:14,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:27:14,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2023-11-17 16:27:14,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430166960] [2023-11-17 16:27:14,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:27:14,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-17 16:27:14,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:27:14,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-17 16:27:14,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2023-11-17 16:27:14,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 147 [2023-11-17 16:27:14,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 536 transitions, 11066 flow. Second operand has 21 states, 21 states have (on average 58.95238095238095) internal successors, (1238), 21 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:14,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:27:14,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 147 [2023-11-17 16:27:14,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:27:15,044 INFO L124 PetriNetUnfolderBase]: 1440/2465 cut-off events. [2023-11-17 16:27:15,045 INFO L125 PetriNetUnfolderBase]: For 64981/64981 co-relation queries the response was YES. [2023-11-17 16:27:15,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24812 conditions, 2465 events. 1440/2465 cut-off events. For 64981/64981 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 13950 event pairs, 50 based on Foata normal form. 36/2501 useless extension candidates. Maximal degree in co-relation 24331. Up to 1188 conditions per place. [2023-11-17 16:27:15,133 INFO L140 encePairwiseOnDemand]: 140/147 looper letters, 192 selfloop transitions, 458 changer transitions 7/657 dead transitions. [2023-11-17 16:27:15,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 657 transitions, 14848 flow [2023-11-17 16:27:15,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-17 16:27:15,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-17 16:27:15,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1654 transitions. [2023-11-17 16:27:15,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41672965482489294 [2023-11-17 16:27:15,138 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1654 transitions. [2023-11-17 16:27:15,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1654 transitions. [2023-11-17 16:27:15,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:27:15,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1654 transitions. [2023-11-17 16:27:15,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 61.25925925925926) internal successors, (1654), 27 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:15,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 147.0) internal successors, (4116), 28 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:15,144 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 147.0) internal successors, (4116), 28 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:15,145 INFO L175 Difference]: Start difference. First operand has 284 places, 536 transitions, 11066 flow. Second operand 27 states and 1654 transitions. [2023-11-17 16:27:15,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 657 transitions, 14848 flow [2023-11-17 16:27:15,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 657 transitions, 14147 flow, removed 80 selfloop flow, removed 21 redundant places. [2023-11-17 16:27:15,522 INFO L231 Difference]: Finished difference. Result has 292 places, 610 transitions, 13445 flow [2023-11-17 16:27:15,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=10416, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=388, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=13445, PETRI_PLACES=292, PETRI_TRANSITIONS=610} [2023-11-17 16:27:15,522 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 272 predicate places. [2023-11-17 16:27:15,523 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 610 transitions, 13445 flow [2023-11-17 16:27:15,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 58.95238095238095) internal successors, (1238), 21 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:15,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:27:15,523 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:27:15,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-17 16:27:15,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-17 16:27:15,728 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:27:15,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:27:15,728 INFO L85 PathProgramCache]: Analyzing trace with hash -291500542, now seen corresponding path program 16 times [2023-11-17 16:27:15,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:27:15,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340131976] [2023-11-17 16:27:15,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:27:15,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:27:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:27:15,835 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:15,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:27:15,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340131976] [2023-11-17 16:27:15,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340131976] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:27:15,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752393018] [2023-11-17 16:27:15,835 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:27:15,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:27:15,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:27:15,836 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:27:15,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-17 16:27:15,899 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:27:15,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:27:15,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-17 16:27:15,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:27:16,029 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:16,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:27:16,102 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:16,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752393018] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:27:16,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:27:16,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-11-17 16:27:16,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933142345] [2023-11-17 16:27:16,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:27:16,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 16:27:16,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:27:16,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 16:27:16,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2023-11-17 16:27:16,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 147 [2023-11-17 16:27:16,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 610 transitions, 13445 flow. Second operand has 20 states, 20 states have (on average 58.75) internal successors, (1175), 20 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:16,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:27:16,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 147 [2023-11-17 16:27:16,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:27:17,031 INFO L124 PetriNetUnfolderBase]: 1570/2693 cut-off events. [2023-11-17 16:27:17,032 INFO L125 PetriNetUnfolderBase]: For 82446/82446 co-relation queries the response was YES. [2023-11-17 16:27:17,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27715 conditions, 2693 events. 1570/2693 cut-off events. For 82446/82446 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 15622 event pairs, 21 based on Foata normal form. 44/2737 useless extension candidates. Maximal degree in co-relation 26823. Up to 927 conditions per place. [2023-11-17 16:27:17,059 INFO L140 encePairwiseOnDemand]: 140/147 looper letters, 259 selfloop transitions, 483 changer transitions 2/744 dead transitions. [2023-11-17 16:27:17,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 744 transitions, 17075 flow [2023-11-17 16:27:17,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-17 16:27:17,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-11-17 16:27:17,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2086 transitions. [2023-11-17 16:27:17,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173669467787115 [2023-11-17 16:27:17,062 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 2086 transitions. [2023-11-17 16:27:17,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 2086 transitions. [2023-11-17 16:27:17,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:27:17,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 2086 transitions. [2023-11-17 16:27:17,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 61.35294117647059) internal successors, (2086), 34 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:17,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 147.0) internal successors, (5145), 35 states have internal predecessors, (5145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:17,067 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 147.0) internal successors, (5145), 35 states have internal predecessors, (5145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:17,068 INFO L175 Difference]: Start difference. First operand has 292 places, 610 transitions, 13445 flow. Second operand 34 states and 2086 transitions. [2023-11-17 16:27:17,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 744 transitions, 17075 flow [2023-11-17 16:27:17,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 744 transitions, 16218 flow, removed 340 selfloop flow, removed 12 redundant places. [2023-11-17 16:27:17,582 INFO L231 Difference]: Finished difference. Result has 315 places, 671 transitions, 15472 flow [2023-11-17 16:27:17,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=12560, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=417, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=15472, PETRI_PLACES=315, PETRI_TRANSITIONS=671} [2023-11-17 16:27:17,583 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 295 predicate places. [2023-11-17 16:27:17,583 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 671 transitions, 15472 flow [2023-11-17 16:27:17,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 58.75) internal successors, (1175), 20 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:17,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:27:17,584 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:27:17,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-17 16:27:17,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-17 16:27:17,788 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:27:17,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:27:17,792 INFO L85 PathProgramCache]: Analyzing trace with hash -466328008, now seen corresponding path program 17 times [2023-11-17 16:27:17,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:27:17,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589466502] [2023-11-17 16:27:17,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:27:17,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:27:17,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:27:17,911 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:17,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:27:17,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589466502] [2023-11-17 16:27:17,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589466502] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:27:17,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547136291] [2023-11-17 16:27:17,912 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:27:17,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:27:17,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:27:17,913 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:27:17,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-17 16:27:17,981 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-17 16:27:17,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:27:17,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 16:27:17,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:27:18,088 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:18,088 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:27:18,223 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:18,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547136291] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:27:18,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:27:18,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2023-11-17 16:27:18,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955579401] [2023-11-17 16:27:18,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:27:18,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-17 16:27:18,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:27:18,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-17 16:27:18,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2023-11-17 16:27:18,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 147 [2023-11-17 16:27:18,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 671 transitions, 15472 flow. Second operand has 23 states, 23 states have (on average 59.04347826086956) internal successors, (1358), 23 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:18,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:27:18,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 147 [2023-11-17 16:27:18,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:27:19,336 INFO L124 PetriNetUnfolderBase]: 1987/3404 cut-off events. [2023-11-17 16:27:19,336 INFO L125 PetriNetUnfolderBase]: For 69280/69280 co-relation queries the response was YES. [2023-11-17 16:27:19,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34824 conditions, 3404 events. 1987/3404 cut-off events. For 69280/69280 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 20716 event pairs, 11 based on Foata normal form. 34/3438 useless extension candidates. Maximal degree in co-relation 34397. Up to 885 conditions per place. [2023-11-17 16:27:19,373 INFO L140 encePairwiseOnDemand]: 140/147 looper letters, 194 selfloop transitions, 727 changer transitions 12/933 dead transitions. [2023-11-17 16:27:19,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 933 transitions, 22464 flow [2023-11-17 16:27:19,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-17 16:27:19,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-11-17 16:27:19,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2205 transitions. [2023-11-17 16:27:19,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-11-17 16:27:19,375 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2205 transitions. [2023-11-17 16:27:19,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2205 transitions. [2023-11-17 16:27:19,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:27:19,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2205 transitions. [2023-11-17 16:27:19,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 61.25) internal successors, (2205), 36 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:19,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 147.0) internal successors, (5439), 37 states have internal predecessors, (5439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:19,381 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 147.0) internal successors, (5439), 37 states have internal predecessors, (5439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:19,382 INFO L175 Difference]: Start difference. First operand has 315 places, 671 transitions, 15472 flow. Second operand 36 states and 2205 transitions. [2023-11-17 16:27:19,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 933 transitions, 22464 flow [2023-11-17 16:27:20,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 933 transitions, 22043 flow, removed 98 selfloop flow, removed 21 redundant places. [2023-11-17 16:27:20,080 INFO L231 Difference]: Finished difference. Result has 340 places, 855 transitions, 21629 flow [2023-11-17 16:27:20,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=15183, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=671, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=549, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=21629, PETRI_PLACES=340, PETRI_TRANSITIONS=855} [2023-11-17 16:27:20,081 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 320 predicate places. [2023-11-17 16:27:20,081 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 855 transitions, 21629 flow [2023-11-17 16:27:20,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 59.04347826086956) internal successors, (1358), 23 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:20,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:27:20,081 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:27:20,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-17 16:27:20,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:27:20,286 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:27:20,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:27:20,286 INFO L85 PathProgramCache]: Analyzing trace with hash -900009910, now seen corresponding path program 18 times [2023-11-17 16:27:20,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:27:20,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96987395] [2023-11-17 16:27:20,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:27:20,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:27:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:27:20,406 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:20,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:27:20,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96987395] [2023-11-17 16:27:20,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96987395] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:27:20,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462579232] [2023-11-17 16:27:20,409 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:27:20,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:27:20,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:27:20,410 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:27:20,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-17 16:27:20,469 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 16:27:20,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:27:20,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 16:27:20,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:27:20,558 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:20,558 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:27:20,713 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:20,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462579232] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:27:20,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:27:20,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2023-11-17 16:27:20,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970326952] [2023-11-17 16:27:20,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:27:20,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-17 16:27:20,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:27:20,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-17 16:27:20,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2023-11-17 16:27:20,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 147 [2023-11-17 16:27:20,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 855 transitions, 21629 flow. Second operand has 23 states, 23 states have (on average 59.04347826086956) internal successors, (1358), 23 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:20,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:27:20,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 147 [2023-11-17 16:27:20,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:27:22,313 INFO L124 PetriNetUnfolderBase]: 2164/3725 cut-off events. [2023-11-17 16:27:22,313 INFO L125 PetriNetUnfolderBase]: For 85025/85025 co-relation queries the response was YES. [2023-11-17 16:27:22,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41182 conditions, 3725 events. 2164/3725 cut-off events. For 85025/85025 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 23189 event pairs, 27 based on Foata normal form. 10/3735 useless extension candidates. Maximal degree in co-relation 40603. Up to 1233 conditions per place. [2023-11-17 16:27:22,356 INFO L140 encePairwiseOnDemand]: 140/147 looper letters, 322 selfloop transitions, 695 changer transitions 0/1017 dead transitions. [2023-11-17 16:27:22,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 1017 transitions, 26367 flow [2023-11-17 16:27:22,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-17 16:27:22,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-11-17 16:27:22,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 2267 transitions. [2023-11-17 16:27:22,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41680455966170255 [2023-11-17 16:27:22,358 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 2267 transitions. [2023-11-17 16:27:22,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 2267 transitions. [2023-11-17 16:27:22,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:27:22,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 2267 transitions. [2023-11-17 16:27:22,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 61.270270270270274) internal successors, (2267), 37 states have internal predecessors, (2267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:22,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 147.0) internal successors, (5586), 38 states have internal predecessors, (5586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:22,368 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 147.0) internal successors, (5586), 38 states have internal predecessors, (5586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:22,368 INFO L175 Difference]: Start difference. First operand has 340 places, 855 transitions, 21629 flow. Second operand 37 states and 2267 transitions. [2023-11-17 16:27:22,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 1017 transitions, 26367 flow [2023-11-17 16:27:23,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 1017 transitions, 25806 flow, removed 190 selfloop flow, removed 16 redundant places. [2023-11-17 16:27:23,331 INFO L231 Difference]: Finished difference. Result has 366 places, 942 transitions, 25232 flow [2023-11-17 16:27:23,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=21134, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=855, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=610, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=25232, PETRI_PLACES=366, PETRI_TRANSITIONS=942} [2023-11-17 16:27:23,332 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 346 predicate places. [2023-11-17 16:27:23,332 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 942 transitions, 25232 flow [2023-11-17 16:27:23,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 59.04347826086956) internal successors, (1358), 23 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:23,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:27:23,332 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:27:23,336 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-17 16:27:23,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:27:23,534 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:27:23,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:27:23,534 INFO L85 PathProgramCache]: Analyzing trace with hash -899785140, now seen corresponding path program 19 times [2023-11-17 16:27:23,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:27:23,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583312173] [2023-11-17 16:27:23,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:27:23,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:27:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:27:23,670 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:23,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:27:23,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583312173] [2023-11-17 16:27:23,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583312173] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:27:23,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194505362] [2023-11-17 16:27:23,671 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 16:27:23,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:27:23,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:27:23,685 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:27:23,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-17 16:27:23,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:27:23,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 16:27:23,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:27:23,872 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:23,872 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:27:24,015 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:24,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194505362] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:27:24,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:27:24,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-11-17 16:27:24,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211987262] [2023-11-17 16:27:24,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:27:24,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-17 16:27:24,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:27:24,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-17 16:27:24,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2023-11-17 16:27:24,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 147 [2023-11-17 16:27:24,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 942 transitions, 25232 flow. Second operand has 24 states, 24 states have (on average 59.041666666666664) internal successors, (1417), 24 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:24,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:27:24,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 147 [2023-11-17 16:27:24,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:27:26,303 INFO L124 PetriNetUnfolderBase]: 2981/5168 cut-off events. [2023-11-17 16:27:26,303 INFO L125 PetriNetUnfolderBase]: For 137200/137200 co-relation queries the response was YES. [2023-11-17 16:27:26,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59105 conditions, 5168 events. 2981/5168 cut-off events. For 137200/137200 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 34545 event pairs, 29 based on Foata normal form. 66/5234 useless extension candidates. Maximal degree in co-relation 58505. Up to 1391 conditions per place. [2023-11-17 16:27:26,361 INFO L140 encePairwiseOnDemand]: 140/147 looper letters, 452 selfloop transitions, 915 changer transitions 18/1385 dead transitions. [2023-11-17 16:27:26,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 1385 transitions, 38448 flow [2023-11-17 16:27:26,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-11-17 16:27:26,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-11-17 16:27:26,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 2635 transitions. [2023-11-17 16:27:26,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4168644201866793 [2023-11-17 16:27:26,364 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 2635 transitions. [2023-11-17 16:27:26,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 2635 transitions. [2023-11-17 16:27:26,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:27:26,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 2635 transitions. [2023-11-17 16:27:26,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 61.27906976744186) internal successors, (2635), 43 states have internal predecessors, (2635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:26,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 147.0) internal successors, (6468), 44 states have internal predecessors, (6468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:26,370 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 147.0) internal successors, (6468), 44 states have internal predecessors, (6468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:26,370 INFO L175 Difference]: Start difference. First operand has 366 places, 942 transitions, 25232 flow. Second operand 43 states and 2635 transitions. [2023-11-17 16:27:26,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 1385 transitions, 38448 flow [2023-11-17 16:27:27,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 1385 transitions, 38066 flow, removed 127 selfloop flow, removed 11 redundant places. [2023-11-17 16:27:28,016 INFO L231 Difference]: Finished difference. Result has 409 places, 1290 transitions, 37546 flow [2023-11-17 16:27:28,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=24895, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=938, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=576, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=37546, PETRI_PLACES=409, PETRI_TRANSITIONS=1290} [2023-11-17 16:27:28,018 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 389 predicate places. [2023-11-17 16:27:28,018 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 1290 transitions, 37546 flow [2023-11-17 16:27:28,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 59.041666666666664) internal successors, (1417), 24 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:28,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:27:28,019 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:27:28,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-17 16:27:28,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:27:28,224 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:27:28,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:27:28,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1007268656, now seen corresponding path program 20 times [2023-11-17 16:27:28,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:27:28,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440852778] [2023-11-17 16:27:28,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:27:28,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:27:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:27:28,338 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:28,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:27:28,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440852778] [2023-11-17 16:27:28,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440852778] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:27:28,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271518442] [2023-11-17 16:27:28,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:27:28,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:27:28,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:27:28,339 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:27:28,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-17 16:27:28,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:27:28,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:27:28,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 16:27:28,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:27:28,532 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:28,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:27:28,650 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:27:28,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271518442] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:27:28,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:27:28,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 23 [2023-11-17 16:27:28,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736593950] [2023-11-17 16:27:28,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:27:28,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-17 16:27:28,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:27:28,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-17 16:27:28,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2023-11-17 16:27:28,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 147 [2023-11-17 16:27:28,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 1290 transitions, 37546 flow. Second operand has 23 states, 23 states have (on average 58.869565217391305) internal successors, (1354), 23 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:28,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:27:28,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 147 [2023-11-17 16:27:28,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:27:31,037 INFO L124 PetriNetUnfolderBase]: 3063/5336 cut-off events. [2023-11-17 16:27:31,037 INFO L125 PetriNetUnfolderBase]: For 168634/168634 co-relation queries the response was YES. [2023-11-17 16:27:31,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65270 conditions, 5336 events. 3063/5336 cut-off events. For 168634/168634 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 36080 event pairs, 117 based on Foata normal form. 58/5394 useless extension candidates. Maximal degree in co-relation 64175. Up to 4661 conditions per place. [2023-11-17 16:27:31,096 INFO L140 encePairwiseOnDemand]: 140/147 looper letters, 1219 selfloop transitions, 170 changer transitions 14/1403 dead transitions. [2023-11-17 16:27:31,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 1403 transitions, 42280 flow [2023-11-17 16:27:31,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-17 16:27:31,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-11-17 16:27:31,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1786 transitions. [2023-11-17 16:27:31,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189537884119165 [2023-11-17 16:27:31,098 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1786 transitions. [2023-11-17 16:27:31,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1786 transitions. [2023-11-17 16:27:31,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:27:31,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1786 transitions. [2023-11-17 16:27:31,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 61.58620689655172) internal successors, (1786), 29 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:31,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 147.0) internal successors, (4410), 30 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:31,109 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 147.0) internal successors, (4410), 30 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:31,109 INFO L175 Difference]: Start difference. First operand has 409 places, 1290 transitions, 37546 flow. Second operand 29 states and 1786 transitions. [2023-11-17 16:27:31,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 1403 transitions, 42280 flow [2023-11-17 16:27:33,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 1403 transitions, 41692 flow, removed 211 selfloop flow, removed 17 redundant places. [2023-11-17 16:27:33,131 INFO L231 Difference]: Finished difference. Result has 430 places, 1327 transitions, 38628 flow [2023-11-17 16:27:33,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=36813, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=38628, PETRI_PLACES=430, PETRI_TRANSITIONS=1327} [2023-11-17 16:27:33,132 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 410 predicate places. [2023-11-17 16:27:33,132 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 1327 transitions, 38628 flow [2023-11-17 16:27:33,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 58.869565217391305) internal successors, (1354), 23 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:33,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:27:33,133 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:27:33,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-17 16:27:33,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-17 16:27:33,338 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:27:33,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:27:33,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1641103188, now seen corresponding path program 21 times [2023-11-17 16:27:33,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:27:33,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948944598] [2023-11-17 16:27:33,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:27:33,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:27:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:27:33,453 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:33,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:27:33,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948944598] [2023-11-17 16:27:33,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948944598] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:27:33,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143468359] [2023-11-17 16:27:33,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:27:33,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:27:33,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:27:33,469 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:27:33,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-17 16:27:33,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-17 16:27:33,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:27:33,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 16:27:33,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:27:33,655 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:33,655 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:27:33,785 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:33,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143468359] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:27:33,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:27:33,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 22 [2023-11-17 16:27:33,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991333911] [2023-11-17 16:27:33,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:27:33,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-17 16:27:33,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:27:33,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-17 16:27:33,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2023-11-17 16:27:33,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 147 [2023-11-17 16:27:33,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 1327 transitions, 38628 flow. Second operand has 22 states, 22 states have (on average 58.90909090909091) internal successors, (1296), 22 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:33,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:27:33,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 147 [2023-11-17 16:27:33,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:27:36,353 INFO L124 PetriNetUnfolderBase]: 3143/5428 cut-off events. [2023-11-17 16:27:36,353 INFO L125 PetriNetUnfolderBase]: For 165089/165089 co-relation queries the response was YES. [2023-11-17 16:27:36,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66904 conditions, 5428 events. 3143/5428 cut-off events. For 165089/165089 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 36482 event pairs, 123 based on Foata normal form. 28/5456 useless extension candidates. Maximal degree in co-relation 65837. Up to 4856 conditions per place. [2023-11-17 16:27:36,422 INFO L140 encePairwiseOnDemand]: 140/147 looper letters, 1210 selfloop transitions, 203 changer transitions 8/1421 dead transitions. [2023-11-17 16:27:36,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 1421 transitions, 43727 flow [2023-11-17 16:27:36,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-17 16:27:36,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-17 16:27:36,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1467 transitions. [2023-11-17 16:27:36,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41581632653061223 [2023-11-17 16:27:36,437 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1467 transitions. [2023-11-17 16:27:36,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1467 transitions. [2023-11-17 16:27:36,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:27:36,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1467 transitions. [2023-11-17 16:27:36,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 61.125) internal successors, (1467), 24 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:36,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 147.0) internal successors, (3675), 25 states have internal predecessors, (3675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:36,441 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 147.0) internal successors, (3675), 25 states have internal predecessors, (3675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:36,441 INFO L175 Difference]: Start difference. First operand has 430 places, 1327 transitions, 38628 flow. Second operand 24 states and 1467 transitions. [2023-11-17 16:27:36,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 1421 transitions, 43727 flow [2023-11-17 16:27:38,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 1421 transitions, 43319 flow, removed 134 selfloop flow, removed 16 redundant places. [2023-11-17 16:27:38,801 INFO L231 Difference]: Finished difference. Result has 445 places, 1379 transitions, 40588 flow [2023-11-17 16:27:38,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=38258, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=40588, PETRI_PLACES=445, PETRI_TRANSITIONS=1379} [2023-11-17 16:27:38,803 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 425 predicate places. [2023-11-17 16:27:38,803 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 1379 transitions, 40588 flow [2023-11-17 16:27:38,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 58.90909090909091) internal successors, (1296), 22 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:38,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:27:38,803 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:27:38,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-17 16:27:39,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-17 16:27:39,008 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:27:39,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:27:39,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1879423200, now seen corresponding path program 22 times [2023-11-17 16:27:39,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:27:39,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430929528] [2023-11-17 16:27:39,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:27:39,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:27:39,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:27:39,088 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:39,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:27:39,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430929528] [2023-11-17 16:27:39,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430929528] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:27:39,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182322047] [2023-11-17 16:27:39,089 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:27:39,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:27:39,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:27:39,106 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:27:39,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-17 16:27:39,186 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:27:39,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:27:39,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:27:39,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:27:39,212 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:39,212 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:27:39,310 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:39,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182322047] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:27:39,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:27:39,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 6] total 10 [2023-11-17 16:27:39,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093699935] [2023-11-17 16:27:39,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:27:39,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 16:27:39,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:27:39,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 16:27:39,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-17 16:27:39,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 147 [2023-11-17 16:27:39,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 1379 transitions, 40588 flow. Second operand has 12 states, 12 states have (on average 64.16666666666667) internal successors, (770), 12 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:39,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:27:39,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 147 [2023-11-17 16:27:39,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:27:42,319 INFO L124 PetriNetUnfolderBase]: 4238/7274 cut-off events. [2023-11-17 16:27:42,319 INFO L125 PetriNetUnfolderBase]: For 220102/220102 co-relation queries the response was YES. [2023-11-17 16:27:42,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91173 conditions, 7274 events. 4238/7274 cut-off events. For 220102/220102 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 51146 event pairs, 130 based on Foata normal form. 1/7275 useless extension candidates. Maximal degree in co-relation 90563. Up to 4082 conditions per place. [2023-11-17 16:27:42,438 INFO L140 encePairwiseOnDemand]: 143/147 looper letters, 1233 selfloop transitions, 589 changer transitions 98/1920 dead transitions. [2023-11-17 16:27:42,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 1920 transitions, 59644 flow [2023-11-17 16:27:42,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:27:42,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:27:42,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 494 transitions. [2023-11-17 16:27:42,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4800777453838678 [2023-11-17 16:27:42,439 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 494 transitions. [2023-11-17 16:27:42,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 494 transitions. [2023-11-17 16:27:42,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:27:42,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 494 transitions. [2023-11-17 16:27:42,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 70.57142857142857) internal successors, (494), 7 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:42,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:42,441 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:42,441 INFO L175 Difference]: Start difference. First operand has 445 places, 1379 transitions, 40588 flow. Second operand 7 states and 494 transitions. [2023-11-17 16:27:42,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 1920 transitions, 59644 flow [2023-11-17 16:27:46,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 1920 transitions, 58932 flow, removed 281 selfloop flow, removed 10 redundant places. [2023-11-17 16:27:46,372 INFO L231 Difference]: Finished difference. Result has 444 places, 1652 transitions, 50397 flow [2023-11-17 16:27:46,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=40144, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=292, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=790, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=50397, PETRI_PLACES=444, PETRI_TRANSITIONS=1652} [2023-11-17 16:27:46,374 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 424 predicate places. [2023-11-17 16:27:46,374 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 1652 transitions, 50397 flow [2023-11-17 16:27:46,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 64.16666666666667) internal successors, (770), 12 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:46,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:27:46,374 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:27:46,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-17 16:27:46,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:27:46,579 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:27:46,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:27:46,579 INFO L85 PathProgramCache]: Analyzing trace with hash -854775556, now seen corresponding path program 23 times [2023-11-17 16:27:46,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:27:46,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841721540] [2023-11-17 16:27:46,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:27:46,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:27:46,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:27:46,634 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:27:46,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:27:46,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841721540] [2023-11-17 16:27:46,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841721540] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:27:46,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070485972] [2023-11-17 16:27:46,635 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:27:46,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:27:46,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:27:46,650 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:27:46,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-17 16:27:46,707 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-11-17 16:27:46,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:27:46,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 16:27:46,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:27:46,726 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:27:46,726 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:27:46,793 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:27:46,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070485972] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:27:46,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:27:46,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-11-17 16:27:46,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708732397] [2023-11-17 16:27:46,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:27:46,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 16:27:46,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:27:46,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 16:27:46,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-17 16:27:46,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 147 [2023-11-17 16:27:46,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 1652 transitions, 50397 flow. Second operand has 11 states, 11 states have (on average 64.0) internal successors, (704), 11 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:46,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:27:46,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 147 [2023-11-17 16:27:46,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:27:50,656 INFO L124 PetriNetUnfolderBase]: 4111/7181 cut-off events. [2023-11-17 16:27:50,657 INFO L125 PetriNetUnfolderBase]: For 245713/245713 co-relation queries the response was YES. [2023-11-17 16:27:50,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93808 conditions, 7181 events. 4111/7181 cut-off events. For 245713/245713 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 51570 event pairs, 152 based on Foata normal form. 32/7213 useless extension candidates. Maximal degree in co-relation 92989. Up to 5598 conditions per place. [2023-11-17 16:27:50,759 INFO L140 encePairwiseOnDemand]: 143/147 looper letters, 1416 selfloop transitions, 346 changer transitions 17/1779 dead transitions. [2023-11-17 16:27:50,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 1779 transitions, 56790 flow [2023-11-17 16:27:50,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 16:27:50,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 16:27:50,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 896 transitions. [2023-11-17 16:27:50,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46886446886446886 [2023-11-17 16:27:50,761 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 896 transitions. [2023-11-17 16:27:50,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 896 transitions. [2023-11-17 16:27:50,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:27:50,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 896 transitions. [2023-11-17 16:27:50,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 68.92307692307692) internal successors, (896), 13 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:50,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 147.0) internal successors, (2058), 14 states have internal predecessors, (2058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:50,763 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 147.0) internal successors, (2058), 14 states have internal predecessors, (2058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:50,763 INFO L175 Difference]: Start difference. First operand has 444 places, 1652 transitions, 50397 flow. Second operand 13 states and 896 transitions. [2023-11-17 16:27:50,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 1779 transitions, 56790 flow [2023-11-17 16:27:54,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 1779 transitions, 56487 flow, removed 131 selfloop flow, removed 3 redundant places. [2023-11-17 16:27:54,671 INFO L231 Difference]: Finished difference. Result has 458 places, 1698 transitions, 52583 flow [2023-11-17 16:27:54,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=50140, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=300, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=52583, PETRI_PLACES=458, PETRI_TRANSITIONS=1698} [2023-11-17 16:27:54,672 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 438 predicate places. [2023-11-17 16:27:54,672 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 1698 transitions, 52583 flow [2023-11-17 16:27:54,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 64.0) internal successors, (704), 11 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:54,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:27:54,673 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:27:54,677 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-17 16:27:54,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:27:54,877 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:27:54,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:27:54,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1934496460, now seen corresponding path program 24 times [2023-11-17 16:27:54,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:27:54,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687224077] [2023-11-17 16:27:54,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:27:54,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:27:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:27:54,981 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:54,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:27:54,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687224077] [2023-11-17 16:27:54,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687224077] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:27:54,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652799742] [2023-11-17 16:27:54,982 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:27:54,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:27:54,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:27:55,011 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:27:55,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-17 16:27:55,074 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 16:27:55,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:27:55,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:27:55,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:27:55,191 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:55,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:27:55,369 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:55,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652799742] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:27:55,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:27:55,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2023-11-17 16:27:55,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730212366] [2023-11-17 16:27:55,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:27:55,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-17 16:27:55,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:27:55,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-17 16:27:55,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2023-11-17 16:27:55,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 147 [2023-11-17 16:27:55,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 1698 transitions, 52583 flow. Second operand has 24 states, 24 states have (on average 59.0) internal successors, (1416), 24 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:27:55,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:27:55,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 147 [2023-11-17 16:27:55,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:28:00,374 INFO L124 PetriNetUnfolderBase]: 4588/8026 cut-off events. [2023-11-17 16:28:00,374 INFO L125 PetriNetUnfolderBase]: For 337881/337881 co-relation queries the response was YES. [2023-11-17 16:28:00,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106894 conditions, 8026 events. 4588/8026 cut-off events. For 337881/337881 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 58695 event pairs, 26 based on Foata normal form. 162/8188 useless extension candidates. Maximal degree in co-relation 105520. Up to 2159 conditions per place. [2023-11-17 16:28:00,530 INFO L140 encePairwiseOnDemand]: 140/147 looper letters, 420 selfloop transitions, 1595 changer transitions 40/2055 dead transitions. [2023-11-17 16:28:00,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 2055 transitions, 66821 flow [2023-11-17 16:28:00,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-17 16:28:00,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-11-17 16:28:00,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 3008 transitions. [2023-11-17 16:28:00,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176037762043593 [2023-11-17 16:28:00,533 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 3008 transitions. [2023-11-17 16:28:00,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 3008 transitions. [2023-11-17 16:28:00,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:28:00,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 3008 transitions. [2023-11-17 16:28:00,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 61.38775510204081) internal successors, (3008), 49 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:28:00,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 147.0) internal successors, (7350), 50 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:28:00,540 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 147.0) internal successors, (7350), 50 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:28:00,540 INFO L175 Difference]: Start difference. First operand has 458 places, 1698 transitions, 52583 flow. Second operand 49 states and 3008 transitions. [2023-11-17 16:28:00,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 2055 transitions, 66821 flow [2023-11-17 16:28:04,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 2055 transitions, 65248 flow, removed 396 selfloop flow, removed 8 redundant places. [2023-11-17 16:28:04,943 INFO L231 Difference]: Finished difference. Result has 505 places, 1916 transitions, 63460 flow [2023-11-17 16:28:04,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=51261, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1380, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=63460, PETRI_PLACES=505, PETRI_TRANSITIONS=1916} [2023-11-17 16:28:04,945 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 485 predicate places. [2023-11-17 16:28:04,945 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 1916 transitions, 63460 flow [2023-11-17 16:28:04,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 59.0) internal successors, (1416), 24 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:28:04,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:28:04,945 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:28:04,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-17 16:28:05,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-17 16:28:05,149 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:28:05,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:28:05,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1625989480, now seen corresponding path program 25 times [2023-11-17 16:28:05,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:28:05,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197077436] [2023-11-17 16:28:05,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:28:05,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:28:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:28:05,256 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:28:05,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:28:05,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197077436] [2023-11-17 16:28:05,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197077436] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:28:05,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592834399] [2023-11-17 16:28:05,257 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 16:28:05,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:28:05,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:28:05,273 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:28:05,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-17 16:28:05,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:28:05,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-17 16:28:05,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:28:05,447 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:28:05,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:28:05,658 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:28:05,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592834399] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:28:05,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:28:05,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 22 [2023-11-17 16:28:05,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602124887] [2023-11-17 16:28:05,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:28:05,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-17 16:28:05,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:28:05,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-17 16:28:05,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2023-11-17 16:28:05,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 147 [2023-11-17 16:28:05,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 1916 transitions, 63460 flow. Second operand has 23 states, 23 states have (on average 58.82608695652174) internal successors, (1353), 23 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:28:05,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:28:05,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 147 [2023-11-17 16:28:05,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:28:10,856 INFO L124 PetriNetUnfolderBase]: 4887/8624 cut-off events. [2023-11-17 16:28:10,857 INFO L125 PetriNetUnfolderBase]: For 335122/335122 co-relation queries the response was YES. [2023-11-17 16:28:10,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119539 conditions, 8624 events. 4887/8624 cut-off events. For 335122/335122 co-relation queries the response was YES. Maximal size of possible extension queue 670. Compared 64073 event pairs, 169 based on Foata normal form. 116/8740 useless extension candidates. Maximal degree in co-relation 118550. Up to 7250 conditions per place. [2023-11-17 16:28:10,993 INFO L140 encePairwiseOnDemand]: 140/147 looper letters, 1725 selfloop transitions, 391 changer transitions 12/2128 dead transitions. [2023-11-17 16:28:10,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 2128 transitions, 74310 flow [2023-11-17 16:28:10,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-17 16:28:10,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-17 16:28:10,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1297 transitions. [2023-11-17 16:28:10,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42014901198574667 [2023-11-17 16:28:10,995 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1297 transitions. [2023-11-17 16:28:10,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1297 transitions. [2023-11-17 16:28:10,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:28:10,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1297 transitions. [2023-11-17 16:28:10,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 61.76190476190476) internal successors, (1297), 21 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:28:10,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 147.0) internal successors, (3234), 22 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:28:10,998 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 147.0) internal successors, (3234), 22 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:28:10,998 INFO L175 Difference]: Start difference. First operand has 505 places, 1916 transitions, 63460 flow. Second operand 21 states and 1297 transitions. [2023-11-17 16:28:10,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 2128 transitions, 74310 flow [2023-11-17 16:28:16,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 2128 transitions, 70904 flow, removed 1010 selfloop flow, removed 25 redundant places. [2023-11-17 16:28:16,928 INFO L231 Difference]: Finished difference. Result has 505 places, 2054 transitions, 66819 flow [2023-11-17 16:28:16,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=60101, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1906, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=273, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=66819, PETRI_PLACES=505, PETRI_TRANSITIONS=2054} [2023-11-17 16:28:16,930 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 485 predicate places. [2023-11-17 16:28:16,930 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 2054 transitions, 66819 flow [2023-11-17 16:28:16,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 58.82608695652174) internal successors, (1353), 23 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:28:16,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:28:16,930 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:28:16,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-17 16:28:17,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-17 16:28:17,135 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:28:17,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:28:17,135 INFO L85 PathProgramCache]: Analyzing trace with hash 811155054, now seen corresponding path program 26 times [2023-11-17 16:28:17,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:28:17,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775052031] [2023-11-17 16:28:17,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:28:17,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:28:17,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:28:17,246 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:28:17,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:28:17,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775052031] [2023-11-17 16:28:17,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775052031] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:28:17,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494410794] [2023-11-17 16:28:17,246 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:28:17,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:28:17,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:28:17,261 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:28:17,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-17 16:28:17,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:28:17,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:28:17,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-17 16:28:17,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:28:17,445 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:28:17,445 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:28:17,631 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:28:17,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494410794] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:28:17,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:28:17,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2023-11-17 16:28:17,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456702585] [2023-11-17 16:28:17,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:28:17,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-17 16:28:17,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:28:17,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-17 16:28:17,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2023-11-17 16:28:17,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 147 [2023-11-17 16:28:17,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 2054 transitions, 66819 flow. Second operand has 27 states, 27 states have (on average 58.666666666666664) internal successors, (1584), 27 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:28:17,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:28:17,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 147 [2023-11-17 16:28:17,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:28:23,364 INFO L124 PetriNetUnfolderBase]: 4930/8713 cut-off events. [2023-11-17 16:28:23,365 INFO L125 PetriNetUnfolderBase]: For 297116/297116 co-relation queries the response was YES. [2023-11-17 16:28:23,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116564 conditions, 8713 events. 4930/8713 cut-off events. For 297116/297116 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 65003 event pairs, 169 based on Foata normal form. 36/8749 useless extension candidates. Maximal degree in co-relation 116286. Up to 7069 conditions per place. [2023-11-17 16:28:23,498 INFO L140 encePairwiseOnDemand]: 140/147 looper letters, 1713 selfloop transitions, 409 changer transitions 17/2139 dead transitions. [2023-11-17 16:28:23,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 2139 transitions, 72596 flow [2023-11-17 16:28:23,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-17 16:28:23,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-17 16:28:23,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1536 transitions. [2023-11-17 16:28:23,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4179591836734694 [2023-11-17 16:28:23,500 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1536 transitions. [2023-11-17 16:28:23,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1536 transitions. [2023-11-17 16:28:23,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:28:23,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1536 transitions. [2023-11-17 16:28:23,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 61.44) internal successors, (1536), 25 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:28:23,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 147.0) internal successors, (3822), 26 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:28:23,509 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 147.0) internal successors, (3822), 26 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:28:23,509 INFO L175 Difference]: Start difference. First operand has 505 places, 2054 transitions, 66819 flow. Second operand 25 states and 1536 transitions. [2023-11-17 16:28:23,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 2139 transitions, 72596 flow [2023-11-17 16:28:28,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 2139 transitions, 71964 flow, removed 227 selfloop flow, removed 14 redundant places. [2023-11-17 16:28:28,258 INFO L231 Difference]: Finished difference. Result has 518 places, 2061 transitions, 67487 flow [2023-11-17 16:28:28,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=65877, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2045, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=381, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1660, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=67487, PETRI_PLACES=518, PETRI_TRANSITIONS=2061} [2023-11-17 16:28:28,260 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 498 predicate places. [2023-11-17 16:28:28,260 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 2061 transitions, 67487 flow [2023-11-17 16:28:28,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 58.666666666666664) internal successors, (1584), 27 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:28:28,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:28:28,260 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:28:28,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-17 16:28:28,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-17 16:28:28,465 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:28:28,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:28:28,465 INFO L85 PathProgramCache]: Analyzing trace with hash 808744938, now seen corresponding path program 27 times [2023-11-17 16:28:28,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:28:28,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484186105] [2023-11-17 16:28:28,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:28:28,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:28:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:28:28,596 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:28:28,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:28:28,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484186105] [2023-11-17 16:28:28,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484186105] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:28:28,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486530657] [2023-11-17 16:28:28,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:28:28,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:28:28,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:28:28,598 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:28:28,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-17 16:28:28,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-17 16:28:28,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:28:28,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-17 16:28:28,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:28:28,749 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:28:28,749 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:28:29,050 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:28:29,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486530657] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:28:29,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:28:29,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2023-11-17 16:28:29,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077588177] [2023-11-17 16:28:29,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:28:29,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-17 16:28:29,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:28:29,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-17 16:28:29,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2023-11-17 16:28:29,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 147 [2023-11-17 16:28:29,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 2061 transitions, 67487 flow. Second operand has 26 states, 26 states have (on average 58.96153846153846) internal successors, (1533), 26 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:28:29,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:28:29,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 147 [2023-11-17 16:28:29,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:28:35,286 INFO L124 PetriNetUnfolderBase]: 6000/10593 cut-off events. [2023-11-17 16:28:35,287 INFO L125 PetriNetUnfolderBase]: For 366669/366669 co-relation queries the response was YES. [2023-11-17 16:28:35,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141701 conditions, 10593 events. 6000/10593 cut-off events. For 366669/366669 co-relation queries the response was YES. Maximal size of possible extension queue 795. Compared 81409 event pairs, 66 based on Foata normal form. 28/10621 useless extension candidates. Maximal degree in co-relation 140801. Up to 3723 conditions per place. [2023-11-17 16:28:35,438 INFO L140 encePairwiseOnDemand]: 140/147 looper letters, 513 selfloop transitions, 2335 changer transitions 45/2893 dead transitions. [2023-11-17 16:28:35,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 2893 transitions, 98133 flow [2023-11-17 16:28:35,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-17 16:28:35,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-11-17 16:28:35,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 2832 transitions. [2023-11-17 16:28:35,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41881100266193433 [2023-11-17 16:28:35,440 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 2832 transitions. [2023-11-17 16:28:35,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 2832 transitions. [2023-11-17 16:28:35,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:28:35,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 2832 transitions. [2023-11-17 16:28:35,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 61.56521739130435) internal successors, (2832), 46 states have internal predecessors, (2832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:28:35,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 147.0) internal successors, (6909), 47 states have internal predecessors, (6909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:28:35,446 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 147.0) internal successors, (6909), 47 states have internal predecessors, (6909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:28:35,446 INFO L175 Difference]: Start difference. First operand has 518 places, 2061 transitions, 67487 flow. Second operand 46 states and 2832 transitions. [2023-11-17 16:28:35,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 2893 transitions, 98133 flow [2023-11-17 16:28:41,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 2893 transitions, 97578 flow, removed 159 selfloop flow, removed 12 redundant places. [2023-11-17 16:28:42,002 INFO L231 Difference]: Finished difference. Result has 562 places, 2688 transitions, 95509 flow [2023-11-17 16:28:42,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=66985, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2061, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1709, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=95509, PETRI_PLACES=562, PETRI_TRANSITIONS=2688} [2023-11-17 16:28:42,011 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 542 predicate places. [2023-11-17 16:28:42,011 INFO L495 AbstractCegarLoop]: Abstraction has has 562 places, 2688 transitions, 95509 flow [2023-11-17 16:28:42,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 58.96153846153846) internal successors, (1533), 26 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:28:42,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:28:42,011 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:28:42,016 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-17 16:28:42,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-17 16:28:42,217 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:28:42,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:28:42,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1881231726, now seen corresponding path program 28 times [2023-11-17 16:28:42,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:28:42,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036833078] [2023-11-17 16:28:42,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:28:42,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:28:42,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:28:42,387 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:28:42,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:28:42,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036833078] [2023-11-17 16:28:42,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036833078] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:28:42,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122635973] [2023-11-17 16:28:42,387 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:28:42,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:28:42,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:28:42,399 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:28:42,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-17 16:28:42,455 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:28:42,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:28:42,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 16:28:42,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:28:42,646 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:28:42,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:28:42,743 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:28:42,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122635973] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:28:42,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:28:42,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2023-11-17 16:28:42,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602112968] [2023-11-17 16:28:42,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:28:42,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-17 16:28:42,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:28:42,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-17 16:28:42,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2023-11-17 16:28:42,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 147 [2023-11-17 16:28:42,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 562 places, 2688 transitions, 95509 flow. Second operand has 25 states, 25 states have (on average 58.6) internal successors, (1465), 25 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:28:42,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:28:42,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 147 [2023-11-17 16:28:42,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:28:53,063 INFO L124 PetriNetUnfolderBase]: 6949/11858 cut-off events. [2023-11-17 16:28:53,063 INFO L125 PetriNetUnfolderBase]: For 438922/438922 co-relation queries the response was YES. [2023-11-17 16:28:53,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173616 conditions, 11858 events. 6949/11858 cut-off events. For 438922/438922 co-relation queries the response was YES. Maximal size of possible extension queue 868. Compared 88850 event pairs, 239 based on Foata normal form. 50/11908 useless extension candidates. Maximal degree in co-relation 172518. Up to 5834 conditions per place. [2023-11-17 16:28:53,422 INFO L140 encePairwiseOnDemand]: 139/147 looper letters, 1227 selfloop transitions, 2129 changer transitions 2/3358 dead transitions. [2023-11-17 16:28:53,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 625 places, 3358 transitions, 123852 flow [2023-11-17 16:28:53,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-11-17 16:28:53,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2023-11-17 16:28:53,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 3955 transitions. [2023-11-17 16:28:53,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4139194139194139 [2023-11-17 16:28:53,426 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 3955 transitions. [2023-11-17 16:28:53,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 3955 transitions. [2023-11-17 16:28:53,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:28:53,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 3955 transitions. [2023-11-17 16:28:53,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 66 states, 65 states have (on average 60.84615384615385) internal successors, (3955), 65 states have internal predecessors, (3955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:28:53,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 66 states, 66 states have (on average 147.0) internal successors, (9702), 66 states have internal predecessors, (9702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:28:53,437 INFO L81 ComplementDD]: Finished complementDD. Result has 66 states, 66 states have (on average 147.0) internal successors, (9702), 66 states have internal predecessors, (9702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:28:53,437 INFO L175 Difference]: Start difference. First operand has 562 places, 2688 transitions, 95509 flow. Second operand 65 states and 3955 transitions. [2023-11-17 16:28:53,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 625 places, 3358 transitions, 123852 flow [2023-11-17 16:29:03,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 613 places, 3358 transitions, 121909 flow, removed 895 selfloop flow, removed 12 redundant places. [2023-11-17 16:29:03,765 INFO L231 Difference]: Finished difference. Result has 630 places, 3205 transitions, 119157 flow [2023-11-17 16:29:03,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=93994, PETRI_DIFFERENCE_MINUEND_PLACES=549, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2688, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1648, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=963, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=119157, PETRI_PLACES=630, PETRI_TRANSITIONS=3205} [2023-11-17 16:29:03,768 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 610 predicate places. [2023-11-17 16:29:03,768 INFO L495 AbstractCegarLoop]: Abstraction has has 630 places, 3205 transitions, 119157 flow [2023-11-17 16:29:03,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 58.6) internal successors, (1465), 25 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:29:03,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:29:03,769 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:29:03,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-17 16:29:03,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:29:03,973 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:29:03,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:29:03,973 INFO L85 PathProgramCache]: Analyzing trace with hash -65518880, now seen corresponding path program 29 times [2023-11-17 16:29:03,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:29:03,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763689260] [2023-11-17 16:29:03,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:29:03,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:29:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:29:04,118 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:29:04,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:29:04,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763689260] [2023-11-17 16:29:04,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763689260] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:29:04,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577557327] [2023-11-17 16:29:04,118 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:29:04,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:29:04,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:29:04,134 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:29:04,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-17 16:29:04,196 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-17 16:29:04,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:29:04,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-17 16:29:04,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:29:04,303 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:29:04,303 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:29:04,527 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:29:04,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577557327] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:29:04,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:29:04,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2023-11-17 16:29:04,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084584496] [2023-11-17 16:29:04,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:29:04,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-17 16:29:04,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:29:04,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-17 16:29:04,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=550, Unknown=0, NotChecked=0, Total=702 [2023-11-17 16:29:04,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 147 [2023-11-17 16:29:04,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 630 places, 3205 transitions, 119157 flow. Second operand has 27 states, 27 states have (on average 58.96296296296296) internal successors, (1592), 27 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:29:04,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:29:04,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 147 [2023-11-17 16:29:04,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:29:17,385 INFO L124 PetriNetUnfolderBase]: 7311/12542 cut-off events. [2023-11-17 16:29:17,385 INFO L125 PetriNetUnfolderBase]: For 483051/483051 co-relation queries the response was YES. [2023-11-17 16:29:17,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186179 conditions, 12542 events. 7311/12542 cut-off events. For 483051/483051 co-relation queries the response was YES. Maximal size of possible extension queue 881. Compared 95164 event pairs, 169 based on Foata normal form. 50/12592 useless extension candidates. Maximal degree in co-relation 185852. Up to 4727 conditions per place. [2023-11-17 16:29:17,611 INFO L140 encePairwiseOnDemand]: 140/147 looper letters, 668 selfloop transitions, 2812 changer transitions 1/3481 dead transitions. [2023-11-17 16:29:17,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 676 places, 3481 transitions, 132910 flow [2023-11-17 16:29:17,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-17 16:29:17,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-11-17 16:29:17,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 2885 transitions. [2023-11-17 16:29:17,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.417571283832682 [2023-11-17 16:29:17,614 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 2885 transitions. [2023-11-17 16:29:17,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 2885 transitions. [2023-11-17 16:29:17,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:29:17,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 2885 transitions. [2023-11-17 16:29:17,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 61.38297872340426) internal successors, (2885), 47 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:29:17,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 147.0) internal successors, (7056), 48 states have internal predecessors, (7056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:29:17,621 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 147.0) internal successors, (7056), 48 states have internal predecessors, (7056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:29:17,621 INFO L175 Difference]: Start difference. First operand has 630 places, 3205 transitions, 119157 flow. Second operand 47 states and 2885 transitions. [2023-11-17 16:29:17,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 676 places, 3481 transitions, 132910 flow [2023-11-17 16:29:30,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 654 places, 3481 transitions, 128933 flow, removed 683 selfloop flow, removed 22 redundant places. [2023-11-17 16:29:30,174 INFO L231 Difference]: Finished difference. Result has 667 places, 3363 transitions, 128559 flow [2023-11-17 16:29:30,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=115316, PETRI_DIFFERENCE_MINUEND_PLACES=608, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2658, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=128559, PETRI_PLACES=667, PETRI_TRANSITIONS=3363} [2023-11-17 16:29:30,185 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 647 predicate places. [2023-11-17 16:29:30,185 INFO L495 AbstractCegarLoop]: Abstraction has has 667 places, 3363 transitions, 128559 flow [2023-11-17 16:29:30,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 58.96296296296296) internal successors, (1592), 27 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:29:30,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:29:30,185 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:29:30,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-17 16:29:30,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:29:30,390 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:29:30,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:29:30,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1102128658, now seen corresponding path program 30 times [2023-11-17 16:29:30,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:29:30,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043779127] [2023-11-17 16:29:30,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:29:30,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:29:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:29:30,515 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:29:30,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:29:30,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043779127] [2023-11-17 16:29:30,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043779127] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:29:30,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637104725] [2023-11-17 16:29:30,516 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:29:30,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:29:30,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:29:30,517 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:29:30,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-17 16:29:30,588 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-11-17 16:29:30,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:29:30,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:29:30,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:29:30,696 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:29:30,697 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:29:30,869 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:29:30,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637104725] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:29:30,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:29:30,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2023-11-17 16:29:30,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559420434] [2023-11-17 16:29:30,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:29:30,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-17 16:29:30,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:29:30,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-17 16:29:30,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=553, Unknown=0, NotChecked=0, Total=702 [2023-11-17 16:29:30,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 147 [2023-11-17 16:29:30,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 667 places, 3363 transitions, 128559 flow. Second operand has 27 states, 27 states have (on average 58.96296296296296) internal successors, (1592), 27 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:29:30,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:29:30,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 147 [2023-11-17 16:29:30,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:29:47,311 INFO L124 PetriNetUnfolderBase]: 7839/13504 cut-off events. [2023-11-17 16:29:47,311 INFO L125 PetriNetUnfolderBase]: For 536675/536675 co-relation queries the response was YES. [2023-11-17 16:29:47,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203957 conditions, 13504 events. 7839/13504 cut-off events. For 536675/536675 co-relation queries the response was YES. Maximal size of possible extension queue 948. Compared 104307 event pairs, 85 based on Foata normal form. 84/13588 useless extension candidates. Maximal degree in co-relation 203679. Up to 3535 conditions per place. [2023-11-17 16:29:47,583 INFO L140 encePairwiseOnDemand]: 140/147 looper letters, 517 selfloop transitions, 3185 changer transitions 31/3733 dead transitions. [2023-11-17 16:29:47,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 718 places, 3733 transitions, 146670 flow [2023-11-17 16:29:47,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-11-17 16:29:47,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2023-11-17 16:29:47,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 3370 transitions. [2023-11-17 16:29:47,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4168212739641311 [2023-11-17 16:29:47,586 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 3370 transitions. [2023-11-17 16:29:47,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 3370 transitions. [2023-11-17 16:29:47,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:29:47,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 3370 transitions. [2023-11-17 16:29:47,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 61.27272727272727) internal successors, (3370), 55 states have internal predecessors, (3370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:29:47,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 147.0) internal successors, (8232), 56 states have internal predecessors, (8232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:29:47,594 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 147.0) internal successors, (8232), 56 states have internal predecessors, (8232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:29:47,594 INFO L175 Difference]: Start difference. First operand has 667 places, 3363 transitions, 128559 flow. Second operand 55 states and 3370 transitions. [2023-11-17 16:29:47,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 718 places, 3733 transitions, 146670 flow [2023-11-17 16:30:04,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 704 places, 3733 transitions, 145834 flow, removed 326 selfloop flow, removed 14 redundant places. [2023-11-17 16:30:04,506 INFO L231 Difference]: Finished difference. Result has 715 places, 3573 transitions, 143947 flow [2023-11-17 16:30:04,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=127287, PETRI_DIFFERENCE_MINUEND_PLACES=650, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2951, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=143947, PETRI_PLACES=715, PETRI_TRANSITIONS=3573} [2023-11-17 16:30:04,509 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 695 predicate places. [2023-11-17 16:30:04,509 INFO L495 AbstractCegarLoop]: Abstraction has has 715 places, 3573 transitions, 143947 flow [2023-11-17 16:30:04,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 58.96296296296296) internal successors, (1592), 27 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:30:04,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:30:04,509 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:30:04,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-11-17 16:30:04,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-17 16:30:04,715 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:30:04,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:30:04,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1224465930, now seen corresponding path program 31 times [2023-11-17 16:30:04,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:30:04,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756698872] [2023-11-17 16:30:04,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:30:04,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:30:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:30:04,857 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:30:04,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:30:04,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756698872] [2023-11-17 16:30:04,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756698872] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:30:04,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466664484] [2023-11-17 16:30:04,858 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 16:30:04,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:30:04,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:30:04,860 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:30:04,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-17 16:30:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:30:04,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-17 16:30:04,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:30:05,026 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:30:05,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:30:05,283 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:30:05,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466664484] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:30:05,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:30:05,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2023-11-17 16:30:05,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319435815] [2023-11-17 16:30:05,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:30:05,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-17 16:30:05,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:30:05,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-17 16:30:05,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=555, Unknown=0, NotChecked=0, Total=702 [2023-11-17 16:30:05,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 147 [2023-11-17 16:30:05,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 715 places, 3573 transitions, 143947 flow. Second operand has 27 states, 27 states have (on average 58.888888888888886) internal successors, (1590), 27 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:30:05,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:30:05,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 147 [2023-11-17 16:30:05,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:30:20,368 INFO L124 PetriNetUnfolderBase]: 8043/13880 cut-off events. [2023-11-17 16:30:20,368 INFO L125 PetriNetUnfolderBase]: For 619783/619783 co-relation queries the response was YES. [2023-11-17 16:30:20,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219662 conditions, 13880 events. 8043/13880 cut-off events. For 619783/619783 co-relation queries the response was YES. Maximal size of possible extension queue 975. Compared 107956 event pairs, 123 based on Foata normal form. 22/13902 useless extension candidates. Maximal degree in co-relation 219371. Up to 4586 conditions per place. [2023-11-17 16:30:20,622 INFO L140 encePairwiseOnDemand]: 140/147 looper letters, 640 selfloop transitions, 3159 changer transitions 25/3824 dead transitions. [2023-11-17 16:30:20,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 765 places, 3824 transitions, 158047 flow [2023-11-17 16:30:20,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-17 16:30:20,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-11-17 16:30:20,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 3122 transitions. [2023-11-17 16:30:20,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41643323996265175 [2023-11-17 16:30:20,629 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 3122 transitions. [2023-11-17 16:30:20,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 3122 transitions. [2023-11-17 16:30:20,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:30:20,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 3122 transitions. [2023-11-17 16:30:20,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 61.21568627450981) internal successors, (3122), 51 states have internal predecessors, (3122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:30:20,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 147.0) internal successors, (7644), 52 states have internal predecessors, (7644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:30:20,635 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 147.0) internal successors, (7644), 52 states have internal predecessors, (7644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:30:20,635 INFO L175 Difference]: Start difference. First operand has 715 places, 3573 transitions, 143947 flow. Second operand 51 states and 3122 transitions. [2023-11-17 16:30:20,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 765 places, 3824 transitions, 158047 flow [2023-11-17 16:30:41,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 730 places, 3824 transitions, 153214 flow, removed 419 selfloop flow, removed 35 redundant places. [2023-11-17 16:30:42,118 INFO L231 Difference]: Finished difference. Result has 735 places, 3668 transitions, 150131 flow [2023-11-17 16:30:42,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=139278, PETRI_DIFFERENCE_MINUEND_PLACES=680, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3047, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=150131, PETRI_PLACES=735, PETRI_TRANSITIONS=3668} [2023-11-17 16:30:42,121 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 715 predicate places. [2023-11-17 16:30:42,121 INFO L495 AbstractCegarLoop]: Abstraction has has 735 places, 3668 transitions, 150131 flow [2023-11-17 16:30:42,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 58.888888888888886) internal successors, (1590), 27 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:30:42,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:30:42,121 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:30:42,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-17 16:30:42,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:30:42,326 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:30:42,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:30:42,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1038981322, now seen corresponding path program 32 times [2023-11-17 16:30:42,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:30:42,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15837149] [2023-11-17 16:30:42,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:30:42,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:30:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:30:42,488 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:30:42,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:30:42,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15837149] [2023-11-17 16:30:42,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15837149] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:30:42,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86466176] [2023-11-17 16:30:42,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:30:42,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:30:42,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:30:42,505 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:30:42,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-17 16:30:42,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:30:42,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:30:42,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:30:42,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:30:42,665 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:30:42,665 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:30:42,890 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:30:42,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86466176] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:30:42,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:30:42,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2023-11-17 16:30:42,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619370242] [2023-11-17 16:30:42,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:30:42,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-17 16:30:42,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:30:42,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-17 16:30:42,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2023-11-17 16:30:42,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 147 [2023-11-17 16:30:42,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 735 places, 3668 transitions, 150131 flow. Second operand has 26 states, 26 states have (on average 58.88461538461539) internal successors, (1531), 26 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:30:42,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:30:42,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 147 [2023-11-17 16:30:42,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:31:00,191 INFO L124 PetriNetUnfolderBase]: 8630/15057 cut-off events. [2023-11-17 16:31:00,192 INFO L125 PetriNetUnfolderBase]: For 735645/735645 co-relation queries the response was YES. [2023-11-17 16:31:00,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239423 conditions, 15057 events. 8630/15057 cut-off events. For 735645/735645 co-relation queries the response was YES. Maximal size of possible extension queue 1069. Compared 120191 event pairs, 117 based on Foata normal form. 100/15157 useless extension candidates. Maximal degree in co-relation 239196. Up to 5231 conditions per place. [2023-11-17 16:31:00,563 INFO L140 encePairwiseOnDemand]: 140/147 looper letters, 542 selfloop transitions, 3517 changer transitions 5/4064 dead transitions. [2023-11-17 16:31:00,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 783 places, 4064 transitions, 170402 flow [2023-11-17 16:31:00,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-11-17 16:31:00,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-11-17 16:31:00,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 3185 transitions. [2023-11-17 16:31:00,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-11-17 16:31:00,566 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 3185 transitions. [2023-11-17 16:31:00,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 3185 transitions. [2023-11-17 16:31:00,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:31:00,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 3185 transitions. [2023-11-17 16:31:00,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 61.25) internal successors, (3185), 52 states have internal predecessors, (3185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:31:00,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 147.0) internal successors, (7791), 53 states have internal predecessors, (7791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:31:00,573 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 147.0) internal successors, (7791), 53 states have internal predecessors, (7791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:31:00,573 INFO L175 Difference]: Start difference. First operand has 735 places, 3668 transitions, 150131 flow. Second operand 52 states and 3185 transitions. [2023-11-17 16:31:00,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 783 places, 4064 transitions, 170402 flow [2023-11-17 16:31:25,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 749 places, 4064 transitions, 168316 flow, removed 202 selfloop flow, removed 34 redundant places. [2023-11-17 16:31:25,180 INFO L231 Difference]: Finished difference. Result has 756 places, 3943 transitions, 168007 flow [2023-11-17 16:31:25,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=147492, PETRI_DIFFERENCE_MINUEND_PLACES=698, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=168007, PETRI_PLACES=756, PETRI_TRANSITIONS=3943} [2023-11-17 16:31:25,183 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 736 predicate places. [2023-11-17 16:31:25,183 INFO L495 AbstractCegarLoop]: Abstraction has has 756 places, 3943 transitions, 168007 flow [2023-11-17 16:31:25,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 58.88461538461539) internal successors, (1531), 26 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:31:25,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:31:25,183 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:31:25,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-11-17 16:31:25,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:31:25,388 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:31:25,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:31:25,389 INFO L85 PathProgramCache]: Analyzing trace with hash 165661276, now seen corresponding path program 33 times [2023-11-17 16:31:25,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:31:25,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295517176] [2023-11-17 16:31:25,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:31:25,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:31:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:31:25,622 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:31:25,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:31:25,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295517176] [2023-11-17 16:31:25,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295517176] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:31:25,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413477480] [2023-11-17 16:31:25,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:31:25,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:31:25,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:31:25,624 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:31:25,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-17 16:31:25,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-17 16:31:25,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:31:25,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-17 16:31:25,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:31:25,820 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:31:25,821 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:31:26,067 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:31:26,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413477480] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:31:26,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:31:26,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2023-11-17 16:31:26,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740864212] [2023-11-17 16:31:26,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:31:26,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-17 16:31:26,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:31:26,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-17 16:31:26,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=594, Unknown=0, NotChecked=0, Total=756 [2023-11-17 16:31:26,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 147 [2023-11-17 16:31:26,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 756 places, 3943 transitions, 168007 flow. Second operand has 28 states, 28 states have (on average 58.92857142857143) internal successors, (1650), 28 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:31:26,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:31:26,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 147 [2023-11-17 16:31:26,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:31:48,200 INFO L124 PetriNetUnfolderBase]: 9350/16329 cut-off events. [2023-11-17 16:31:48,200 INFO L125 PetriNetUnfolderBase]: For 794581/794581 co-relation queries the response was YES. [2023-11-17 16:31:48,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269175 conditions, 16329 events. 9350/16329 cut-off events. For 794581/794581 co-relation queries the response was YES. Maximal size of possible extension queue 1151. Compared 131860 event pairs, 147 based on Foata normal form. 12/16341 useless extension candidates. Maximal degree in co-relation 268176. Up to 5670 conditions per place. [2023-11-17 16:31:48,531 INFO L140 encePairwiseOnDemand]: 140/147 looper letters, 916 selfloop transitions, 3484 changer transitions 0/4400 dead transitions. [2023-11-17 16:31:48,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 815 places, 4400 transitions, 191731 flow [2023-11-17 16:31:48,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-11-17 16:31:48,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2023-11-17 16:31:48,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 3672 transitions. [2023-11-17 16:31:48,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4163265306122449 [2023-11-17 16:31:48,535 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 3672 transitions. [2023-11-17 16:31:48,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 3672 transitions. [2023-11-17 16:31:48,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:31:48,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 3672 transitions. [2023-11-17 16:31:48,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 61.2) internal successors, (3672), 60 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:31:48,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 147.0) internal successors, (8967), 61 states have internal predecessors, (8967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:31:48,550 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 147.0) internal successors, (8967), 61 states have internal predecessors, (8967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:31:48,550 INFO L175 Difference]: Start difference. First operand has 756 places, 3943 transitions, 168007 flow. Second operand 60 states and 3672 transitions. [2023-11-17 16:31:48,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 815 places, 4400 transitions, 191731 flow [2023-11-17 16:32:19,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 791 places, 4400 transitions, 190164 flow, removed 498 selfloop flow, removed 24 redundant places. [2023-11-17 16:32:20,052 INFO L231 Difference]: Finished difference. Result has 799 places, 4263 transitions, 189563 flow [2023-11-17 16:32:20,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=166577, PETRI_DIFFERENCE_MINUEND_PLACES=732, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3943, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=720, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=189563, PETRI_PLACES=799, PETRI_TRANSITIONS=4263} [2023-11-17 16:32:20,055 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 779 predicate places. [2023-11-17 16:32:20,055 INFO L495 AbstractCegarLoop]: Abstraction has has 799 places, 4263 transitions, 189563 flow [2023-11-17 16:32:20,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 58.92857142857143) internal successors, (1650), 28 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:32:20,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:32:20,056 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:32:20,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-11-17 16:32:20,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-17 16:32:20,260 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:32:20,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:32:20,260 INFO L85 PathProgramCache]: Analyzing trace with hash 724898350, now seen corresponding path program 34 times [2023-11-17 16:32:20,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:32:20,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263072721] [2023-11-17 16:32:20,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:32:20,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:32:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:32:20,402 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:32:20,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:32:20,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263072721] [2023-11-17 16:32:20,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263072721] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:32:20,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665266635] [2023-11-17 16:32:20,402 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:32:20,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:32:20,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:32:20,404 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:32:20,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-17 16:32:20,472 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:32:20,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:32:20,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 16:32:20,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:32:20,634 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:32:20,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:32:20,748 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:32:20,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665266635] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:32:20,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:32:20,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 25 [2023-11-17 16:32:20,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5928176] [2023-11-17 16:32:20,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:32:20,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-17 16:32:20,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:32:20,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-17 16:32:20,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2023-11-17 16:32:20,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 147 [2023-11-17 16:32:20,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 799 places, 4263 transitions, 189563 flow. Second operand has 25 states, 25 states have (on average 58.88) internal successors, (1472), 25 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:32:20,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:32:20,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 147 [2023-11-17 16:32:20,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:32:54,592 INFO L124 PetriNetUnfolderBase]: 10065/17536 cut-off events. [2023-11-17 16:32:54,592 INFO L125 PetriNetUnfolderBase]: For 911913/911913 co-relation queries the response was YES. [2023-11-17 16:32:54,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301119 conditions, 17536 events. 10065/17536 cut-off events. For 911913/911913 co-relation queries the response was YES. Maximal size of possible extension queue 1223. Compared 142780 event pairs, 71 based on Foata normal form. 30/17566 useless extension candidates. Maximal degree in co-relation 299852. Up to 4517 conditions per place. [2023-11-17 16:32:55,078 INFO L140 encePairwiseOnDemand]: 140/147 looper letters, 1893 selfloop transitions, 2871 changer transitions 22/4786 dead transitions. [2023-11-17 16:32:55,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 850 places, 4786 transitions, 218873 flow [2023-11-17 16:32:55,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-11-17 16:32:55,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-11-17 16:32:55,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 3183 transitions. [2023-11-17 16:32:55,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41640502354788067 [2023-11-17 16:32:55,082 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 3183 transitions. [2023-11-17 16:32:55,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 3183 transitions. [2023-11-17 16:32:55,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:32:55,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 3183 transitions. [2023-11-17 16:32:55,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 61.21153846153846) internal successors, (3183), 52 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:32:55,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 147.0) internal successors, (7791), 53 states have internal predecessors, (7791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:32:55,093 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 147.0) internal successors, (7791), 53 states have internal predecessors, (7791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:32:55,093 INFO L175 Difference]: Start difference. First operand has 799 places, 4263 transitions, 189563 flow. Second operand 52 states and 3183 transitions. [2023-11-17 16:32:55,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 850 places, 4786 transitions, 218873 flow [2023-11-17 16:33:30,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 833 places, 4786 transitions, 217784 flow, removed 392 selfloop flow, removed 17 redundant places. [2023-11-17 16:33:30,563 INFO L231 Difference]: Finished difference. Result has 846 places, 4593 transitions, 212397 flow [2023-11-17 16:33:30,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=188514, PETRI_DIFFERENCE_MINUEND_PLACES=782, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2545, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1588, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=212397, PETRI_PLACES=846, PETRI_TRANSITIONS=4593} [2023-11-17 16:33:30,566 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 826 predicate places. [2023-11-17 16:33:30,566 INFO L495 AbstractCegarLoop]: Abstraction has has 846 places, 4593 transitions, 212397 flow [2023-11-17 16:33:30,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 58.88) internal successors, (1472), 25 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:30,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:33:30,567 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:33:30,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-11-17 16:33:30,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-17 16:33:30,772 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:33:30,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:33:30,772 INFO L85 PathProgramCache]: Analyzing trace with hash 781049182, now seen corresponding path program 35 times [2023-11-17 16:33:30,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:33:30,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682208077] [2023-11-17 16:33:30,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:33:30,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:33:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:33:30,898 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:33:30,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:33:30,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682208077] [2023-11-17 16:33:30,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682208077] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:33:30,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720083391] [2023-11-17 16:33:30,899 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:33:30,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:33:30,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:33:30,900 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:33:30,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-17 16:33:30,993 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-17 16:33:30,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:33:30,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:33:30,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:33:31,123 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:33:31,123 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:33:31,275 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:33:31,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720083391] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:33:31,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:33:31,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 27 [2023-11-17 16:33:31,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740346067] [2023-11-17 16:33:31,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:33:31,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-17 16:33:31,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:33:31,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-17 16:33:31,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=550, Unknown=0, NotChecked=0, Total=702 [2023-11-17 16:33:31,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 147 [2023-11-17 16:33:31,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 846 places, 4593 transitions, 212397 flow. Second operand has 27 states, 27 states have (on average 58.925925925925924) internal successors, (1591), 27 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:31,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:33:31,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 147 [2023-11-17 16:33:31,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:34:00,707 INFO L124 PetriNetUnfolderBase]: 11548/20071 cut-off events. [2023-11-17 16:34:00,707 INFO L125 PetriNetUnfolderBase]: For 1097188/1097188 co-relation queries the response was YES. [2023-11-17 16:34:01,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355433 conditions, 20071 events. 11548/20071 cut-off events. For 1097188/1097188 co-relation queries the response was YES. Maximal size of possible extension queue 1402. Compared 166750 event pairs, 99 based on Foata normal form. 94/20165 useless extension candidates. Maximal degree in co-relation 354088. Up to 5011 conditions per place. [2023-11-17 16:34:01,154 INFO L140 encePairwiseOnDemand]: 140/147 looper letters, 911 selfloop transitions, 4474 changer transitions 37/5422 dead transitions. [2023-11-17 16:34:01,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 894 places, 5422 transitions, 257564 flow [2023-11-17 16:34:01,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-11-17 16:34:01,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-11-17 16:34:01,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 3060 transitions. [2023-11-17 16:34:01,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4163265306122449 [2023-11-17 16:34:01,156 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 3060 transitions. [2023-11-17 16:34:01,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 3060 transitions. [2023-11-17 16:34:01,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:34:01,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 3060 transitions. [2023-11-17 16:34:01,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 61.2) internal successors, (3060), 50 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:01,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 147.0) internal successors, (7497), 51 states have internal predecessors, (7497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:01,162 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 147.0) internal successors, (7497), 51 states have internal predecessors, (7497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:01,162 INFO L175 Difference]: Start difference. First operand has 846 places, 4593 transitions, 212397 flow. Second operand 50 states and 3060 transitions. [2023-11-17 16:34:01,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 894 places, 5422 transitions, 257564 flow [2023-11-17 16:34:48,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 875 places, 5422 transitions, 253296 flow, removed 400 selfloop flow, removed 19 redundant places. [2023-11-17 16:34:48,404 INFO L231 Difference]: Finished difference. Result has 885 places, 5263 transitions, 251859 flow [2023-11-17 16:34:48,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=208148, PETRI_DIFFERENCE_MINUEND_PLACES=826, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3799, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=687, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=251859, PETRI_PLACES=885, PETRI_TRANSITIONS=5263} [2023-11-17 16:34:48,408 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 865 predicate places. [2023-11-17 16:34:48,408 INFO L495 AbstractCegarLoop]: Abstraction has has 885 places, 5263 transitions, 251859 flow [2023-11-17 16:34:48,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 58.925925925925924) internal successors, (1591), 27 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:48,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:34:48,409 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:34:48,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-11-17 16:34:48,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-17 16:34:48,614 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:34:48,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:34:48,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1616777462, now seen corresponding path program 36 times [2023-11-17 16:34:48,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:34:48,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992587330] [2023-11-17 16:34:48,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:34:48,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:34:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:34:48,739 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:34:48,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:34:48,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992587330] [2023-11-17 16:34:48,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992587330] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:34:48,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036086649] [2023-11-17 16:34:48,740 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:34:48,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:34:48,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:34:48,742 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:34:48,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-17 16:34:48,814 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 16:34:48,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:34:48,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-17 16:34:48,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:34:48,928 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:34:48,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:34:49,117 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:34:49,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036086649] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:34:49,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:34:49,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-11-17 16:34:49,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178390667] [2023-11-17 16:34:49,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:34:49,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-17 16:34:49,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:34:49,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-17 16:34:49,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=645, Unknown=0, NotChecked=0, Total=812 [2023-11-17 16:34:49,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 147 [2023-11-17 16:34:49,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 885 places, 5263 transitions, 251859 flow. Second operand has 29 states, 29 states have (on average 58.827586206896555) internal successors, (1706), 29 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:49,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:34:49,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 147 [2023-11-17 16:34:49,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:35:33,513 INFO L124 PetriNetUnfolderBase]: 12190/21193 cut-off events. [2023-11-17 16:35:33,514 INFO L125 PetriNetUnfolderBase]: For 1286464/1286464 co-relation queries the response was YES. [2023-11-17 16:35:34,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386627 conditions, 21193 events. 12190/21193 cut-off events. For 1286464/1286464 co-relation queries the response was YES. Maximal size of possible extension queue 1495. Compared 177833 event pairs, 93 based on Foata normal form. 36/21229 useless extension candidates. Maximal degree in co-relation 385520. Up to 5322 conditions per place. [2023-11-17 16:35:34,352 INFO L140 encePairwiseOnDemand]: 140/147 looper letters, 797 selfloop transitions, 4841 changer transitions 57/5695 dead transitions. [2023-11-17 16:35:34,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 936 places, 5695 transitions, 279871 flow [2023-11-17 16:35:34,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-11-17 16:35:34,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-11-17 16:35:34,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 3178 transitions. [2023-11-17 16:35:34,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157509157509158 [2023-11-17 16:35:34,355 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 3178 transitions. [2023-11-17 16:35:34,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 3178 transitions. [2023-11-17 16:35:34,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:35:34,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 3178 transitions. [2023-11-17 16:35:34,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 61.11538461538461) internal successors, (3178), 52 states have internal predecessors, (3178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:34,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 147.0) internal successors, (7791), 53 states have internal predecessors, (7791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:34,361 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 147.0) internal successors, (7791), 53 states have internal predecessors, (7791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:34,361 INFO L175 Difference]: Start difference. First operand has 885 places, 5263 transitions, 251859 flow. Second operand 52 states and 3178 transitions. [2023-11-17 16:35:34,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 936 places, 5695 transitions, 279871 flow Received shutdown request... [2023-11-17 16:36:11,602 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 16:36:11,602 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 16:36:11,716 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-17 16:36:11,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-11-17 16:36:11,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:36:11,922 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-11-17 16:36:11,924 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-17 16:36:11,924 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-17 16:36:11,924 INFO L445 BasicCegarLoop]: Path program histogram: [36, 1, 1] [2023-11-17 16:36:11,927 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 16:36:11,927 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 16:36:11,930 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 04:36:11 BasicIcfg [2023-11-17 16:36:11,930 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 16:36:11,931 INFO L158 Benchmark]: Toolchain (without parser) took 555466.88ms. Allocated memory was 341.8MB in the beginning and 3.2GB in the end (delta: 2.9GB). Free memory was 286.9MB in the beginning and 468.1MB in the end (delta: -181.2MB). Peak memory consumption was 3.4GB. Max. memory is 8.0GB. [2023-11-17 16:36:11,934 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 255.9MB. Free memory is still 201.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 16:36:11,934 INFO L158 Benchmark]: CACSL2BoogieTranslator took 201.26ms. Allocated memory is still 341.8MB. Free memory was 286.9MB in the beginning and 275.8MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-11-17 16:36:11,936 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.50ms. Allocated memory is still 341.8MB. Free memory was 275.8MB in the beginning and 274.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 16:36:11,936 INFO L158 Benchmark]: Boogie Preprocessor took 28.38ms. Allocated memory is still 341.8MB. Free memory was 274.3MB in the beginning and 272.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 16:36:11,936 INFO L158 Benchmark]: RCFGBuilder took 258.67ms. Allocated memory is still 341.8MB. Free memory was 272.7MB in the beginning and 257.5MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-11-17 16:36:11,937 INFO L158 Benchmark]: TraceAbstraction took 554946.28ms. Allocated memory was 341.8MB in the beginning and 3.2GB in the end (delta: 2.9GB). Free memory was 257.0MB in the beginning and 468.1MB in the end (delta: -211.1MB). Peak memory consumption was 3.4GB. Max. memory is 8.0GB. [2023-11-17 16:36:11,938 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 255.9MB. Free memory is still 201.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 201.26ms. Allocated memory is still 341.8MB. Free memory was 286.9MB in the beginning and 275.8MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.50ms. Allocated memory is still 341.8MB. Free memory was 275.8MB in the beginning and 274.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.38ms. Allocated memory is still 341.8MB. Free memory was 274.3MB in the beginning and 272.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 258.67ms. Allocated memory is still 341.8MB. Free memory was 272.7MB in the beginning and 257.5MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 554946.28ms. Allocated memory was 341.8MB in the beginning and 3.2GB in the end (delta: 2.9GB). Free memory was 257.0MB in the beginning and 468.1MB in the end (delta: -211.1MB). Peak memory consumption was 3.4GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 72 PlacesBefore, 20 PlacesAfterwards, 71 TransitionsBefore, 15 TransitionsAfterwards, 504 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 65 TotalNumberOfCompositions, 494 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 482, independent: 480, independent conditional: 0, independent unconditional: 480, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 337, independent: 335, independent conditional: 0, independent unconditional: 335, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 337, independent: 335, independent conditional: 0, independent unconditional: 335, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 8, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 482, independent: 145, independent conditional: 0, independent unconditional: 145, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 337, unknown conditional: 0, unknown unconditional: 337] , Statistics on independence cache: Total cache size (in pairs): 24, Positive cache size: 24, Positive conditional cache size: 0, Positive unconditional cache size: 24, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 97 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 554.9s, OverallIterations: 38, TraceHistogramMax: 4, PathProgramHistogramMax: 36, EmptinessCheckTime: 0.0s, AutomataDifference: 530.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3087 SdHoareTripleChecker+Valid, 8.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3087 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 6.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 840 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19000 IncrementalHoareTripleChecker+Invalid, 19840 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 840 mSolverCounterUnsat, 0 mSDtfsCounter, 19000 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3019 GetRequests, 1479 SyntacticMatches, 53 SemanticMatches, 1487 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22682 ImplicationChecksByTransitivity, 13.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=251859occurred in iteration=37, InterpolantAutomatonStates: 1118, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 12.2s InterpolantComputationTime, 1329 NumberOfCodeBlocks, 1317 NumberOfCodeBlocksAsserted, 122 NumberOfCheckSat, 1870 ConstructedInterpolants, 0 QuantifiedInterpolants, 9920 SizeOfPredicates, 242 NumberOfNonLiveVariables, 4485 ConjunctsInSsa, 406 ConjunctsInUnsatCore, 110 InterpolantComputations, 2 PerfectInterpolantSequences, 266/1063 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown