/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-node-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 13:48:50,865 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 13:48:50,902 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-VariableLbe.epf [2023-08-24 13:48:50,910 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 13:48:50,910 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 13:48:50,929 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 13:48:50,930 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 13:48:50,930 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 13:48:50,931 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 13:48:50,931 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 13:48:50,931 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 13:48:50,931 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 13:48:50,932 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 13:48:50,932 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 13:48:50,932 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 13:48:50,932 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 13:48:50,932 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 13:48:50,933 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 13:48:50,933 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 13:48:50,933 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 13:48:50,933 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 13:48:50,934 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 13:48:50,934 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 13:48:50,934 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 13:48:50,934 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 13:48:50,934 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 13:48:50,934 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 13:48:50,935 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 13:48:50,935 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 13:48:50,935 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 13:48:50,935 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 13:48:50,935 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 13:48:50,936 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 13:48:50,936 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 13:48:50,937 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 13:48:50,937 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 13:48:51,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 13:48:51,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 13:48:51,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 13:48:51,203 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 13:48:51,203 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 13:48:51,204 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-subst.wvr.c [2023-08-24 13:48:52,226 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 13:48:52,423 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 13:48:52,423 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-subst.wvr.c [2023-08-24 13:48:52,429 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/515b7d1a9/9bf2f674ba664d5496d776a4a250ef4c/FLAG86becb8e1 [2023-08-24 13:48:52,439 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/515b7d1a9/9bf2f674ba664d5496d776a4a250ef4c [2023-08-24 13:48:52,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 13:48:52,442 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 13:48:52,443 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 13:48:52,443 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 13:48:52,445 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 13:48:52,445 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 01:48:52" (1/1) ... [2023-08-24 13:48:52,446 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7076a756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:48:52, skipping insertion in model container [2023-08-24 13:48:52,446 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 01:48:52" (1/1) ... [2023-08-24 13:48:52,470 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 13:48:52,612 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/chl-node-subst.wvr.c[3996,4009] [2023-08-24 13:48:52,620 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 13:48:52,626 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 13:48:52,644 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/chl-node-subst.wvr.c[3996,4009] [2023-08-24 13:48:52,648 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 13:48:52,659 INFO L206 MainTranslator]: Completed translation [2023-08-24 13:48:52,659 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:48:52 WrapperNode [2023-08-24 13:48:52,659 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 13:48:52,660 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 13:48:52,660 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 13:48:52,660 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 13:48:52,665 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:48:52" (1/1) ... [2023-08-24 13:48:52,672 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:48:52" (1/1) ... [2023-08-24 13:48:52,693 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 437 [2023-08-24 13:48:52,693 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 13:48:52,694 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 13:48:52,694 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 13:48:52,694 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 13:48:52,700 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:48:52" (1/1) ... [2023-08-24 13:48:52,700 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:48:52" (1/1) ... [2023-08-24 13:48:52,704 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:48:52" (1/1) ... [2023-08-24 13:48:52,704 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:48:52" (1/1) ... [2023-08-24 13:48:52,712 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:48:52" (1/1) ... [2023-08-24 13:48:52,716 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:48:52" (1/1) ... [2023-08-24 13:48:52,717 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:48:52" (1/1) ... [2023-08-24 13:48:52,719 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:48:52" (1/1) ... [2023-08-24 13:48:52,721 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 13:48:52,722 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 13:48:52,722 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 13:48:52,722 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 13:48:52,723 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:48:52" (1/1) ... [2023-08-24 13:48:52,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 13:48:52,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:48:52,755 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) [2023-08-24 13:48:52,777 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 [2023-08-24 13:48:52,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 13:48:52,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 13:48:52,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 13:48:52,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 13:48:52,786 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 13:48:52,787 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 13:48:52,787 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 13:48:52,787 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 13:48:52,787 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 13:48:52,787 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 13:48:52,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 13:48:52,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-24 13:48:52,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 13:48:52,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 13:48:52,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 13:48:52,789 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 13:48:52,874 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 13:48:52,876 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 13:48:53,385 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 13:48:53,400 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 13:48:53,400 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-24 13:48:53,403 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 01:48:53 BoogieIcfgContainer [2023-08-24 13:48:53,403 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 13:48:53,405 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 13:48:53,405 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 13:48:53,407 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 13:48:53,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 01:48:52" (1/3) ... [2023-08-24 13:48:53,408 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@146fa1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 01:48:53, skipping insertion in model container [2023-08-24 13:48:53,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:48:52" (2/3) ... [2023-08-24 13:48:53,409 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@146fa1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 01:48:53, skipping insertion in model container [2023-08-24 13:48:53,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 01:48:53" (3/3) ... [2023-08-24 13:48:53,410 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2023-08-24 13:48:53,422 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 13:48:53,422 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 13:48:53,423 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 13:48:53,495 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-24 13:48:53,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 476 places, 507 transitions, 1038 flow [2023-08-24 13:48:53,685 INFO L124 PetriNetUnfolderBase]: 41/504 cut-off events. [2023-08-24 13:48:53,685 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 13:48:53,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 517 conditions, 504 events. 41/504 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 640 event pairs, 0 based on Foata normal form. 0/462 useless extension candidates. Maximal degree in co-relation 430. Up to 2 conditions per place. [2023-08-24 13:48:53,696 INFO L82 GeneralOperation]: Start removeDead. Operand has 476 places, 507 transitions, 1038 flow [2023-08-24 13:48:53,705 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 463 places, 494 transitions, 1006 flow [2023-08-24 13:48:53,708 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 13:48:53,717 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 463 places, 494 transitions, 1006 flow [2023-08-24 13:48:53,722 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 463 places, 494 transitions, 1006 flow [2023-08-24 13:48:53,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 463 places, 494 transitions, 1006 flow [2023-08-24 13:48:53,790 INFO L124 PetriNetUnfolderBase]: 41/494 cut-off events. [2023-08-24 13:48:53,790 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 13:48:53,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 507 conditions, 494 events. 41/494 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 640 event pairs, 0 based on Foata normal form. 0/453 useless extension candidates. Maximal degree in co-relation 430. Up to 2 conditions per place. [2023-08-24 13:48:53,802 INFO L119 LiptonReduction]: Number of co-enabled transitions 17280 [2023-08-24 13:49:07,706 INFO L134 LiptonReduction]: Checked pairs total: 20163 [2023-08-24 13:49:07,706 INFO L136 LiptonReduction]: Total number of compositions: 588 [2023-08-24 13:49:07,721 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 13:49:07,725 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=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5bc6a73d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 13:49:07,725 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 13:49:07,735 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 13:49:07,735 INFO L124 PetriNetUnfolderBase]: 10/41 cut-off events. [2023-08-24 13:49:07,735 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 13:49:07,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:49:07,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:49:07,736 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 13:49:07,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:49:07,739 INFO L85 PathProgramCache]: Analyzing trace with hash -70421863, now seen corresponding path program 1 times [2023-08-24 13:49:07,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:49:07,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399884843] [2023-08-24 13:49:07,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:49:07,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:49:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:49:08,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:49:08,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:49:08,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399884843] [2023-08-24 13:49:08,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399884843] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:49:08,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:49:08,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 13:49:08,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058118431] [2023-08-24 13:49:08,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:49:08,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 13:49:08,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:49:08,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 13:49:08,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 13:49:08,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 464 out of 1095 [2023-08-24 13:49:08,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 473.3333333333333) internal successors, (1420), 3 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:08,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:49:08,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 464 of 1095 [2023-08-24 13:49:08,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:49:08,287 INFO L124 PetriNetUnfolderBase]: 835/1228 cut-off events. [2023-08-24 13:49:08,287 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2023-08-24 13:49:08,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2608 conditions, 1228 events. 835/1228 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4580 event pairs, 477 based on Foata normal form. 0/1030 useless extension candidates. Maximal degree in co-relation 2392. Up to 913 conditions per place. [2023-08-24 13:49:08,292 INFO L140 encePairwiseOnDemand]: 1091/1095 looper letters, 54 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2023-08-24 13:49:08,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 252 flow [2023-08-24 13:49:08,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 13:49:08,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 13:49:08,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1450 transitions. [2023-08-24 13:49:08,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.441400304414003 [2023-08-24 13:49:08,306 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1450 transitions. [2023-08-24 13:49:08,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1450 transitions. [2023-08-24 13:49:08,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:49:08,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1450 transitions. [2023-08-24 13:49:08,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 483.3333333333333) internal successors, (1450), 3 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:08,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1095.0) internal successors, (4380), 4 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:08,323 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1095.0) internal successors, (4380), 4 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:08,324 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 102 flow. Second operand 3 states and 1450 transitions. [2023-08-24 13:49:08,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 252 flow [2023-08-24 13:49:08,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 57 transitions, 236 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-24 13:49:08,329 INFO L231 Difference]: Finished difference. Result has 40 places, 43 transitions, 108 flow [2023-08-24 13:49:08,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=40, PETRI_TRANSITIONS=43} [2023-08-24 13:49:08,332 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -2 predicate places. [2023-08-24 13:49:08,333 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 43 transitions, 108 flow [2023-08-24 13:49:08,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 473.3333333333333) internal successors, (1420), 3 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:08,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:49:08,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:49:08,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 13:49:08,334 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 13:49:08,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:49:08,334 INFO L85 PathProgramCache]: Analyzing trace with hash 638957695, now seen corresponding path program 1 times [2023-08-24 13:49:08,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:49:08,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218500631] [2023-08-24 13:49:08,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:49:08,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:49:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:49:08,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:49:08,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:49:08,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218500631] [2023-08-24 13:49:08,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218500631] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:49:08,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:49:08,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 13:49:08,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367663166] [2023-08-24 13:49:08,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:49:08,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 13:49:08,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:49:08,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 13:49:08,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 13:49:08,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 464 out of 1095 [2023-08-24 13:49:08,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 43 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 473.6666666666667) internal successors, (1421), 3 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:08,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:49:08,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 464 of 1095 [2023-08-24 13:49:08,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:49:08,585 INFO L124 PetriNetUnfolderBase]: 943/1388 cut-off events. [2023-08-24 13:49:08,585 INFO L125 PetriNetUnfolderBase]: For 478/478 co-relation queries the response was YES. [2023-08-24 13:49:08,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3253 conditions, 1388 events. 943/1388 cut-off events. For 478/478 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5195 event pairs, 541 based on Foata normal form. 0/1278 useless extension candidates. Maximal degree in co-relation 1664. Up to 1017 conditions per place. [2023-08-24 13:49:08,592 INFO L140 encePairwiseOnDemand]: 1091/1095 looper letters, 56 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2023-08-24 13:49:08,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 59 transitions, 276 flow [2023-08-24 13:49:08,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 13:49:08,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 13:49:08,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1450 transitions. [2023-08-24 13:49:08,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.441400304414003 [2023-08-24 13:49:08,597 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1450 transitions. [2023-08-24 13:49:08,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1450 transitions. [2023-08-24 13:49:08,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:49:08,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1450 transitions. [2023-08-24 13:49:08,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 483.3333333333333) internal successors, (1450), 3 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:08,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1095.0) internal successors, (4380), 4 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:08,605 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1095.0) internal successors, (4380), 4 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:08,605 INFO L175 Difference]: Start difference. First operand has 40 places, 43 transitions, 108 flow. Second operand 3 states and 1450 transitions. [2023-08-24 13:49:08,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 59 transitions, 276 flow [2023-08-24 13:49:08,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 59 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 13:49:08,609 INFO L231 Difference]: Finished difference. Result has 42 places, 44 transitions, 120 flow [2023-08-24 13:49:08,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=42, PETRI_TRANSITIONS=44} [2023-08-24 13:49:08,611 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-08-24 13:49:08,611 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 44 transitions, 120 flow [2023-08-24 13:49:08,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 473.6666666666667) internal successors, (1421), 3 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:08,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:49:08,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:49:08,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 13:49:08,615 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 13:49:08,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:49:08,620 INFO L85 PathProgramCache]: Analyzing trace with hash 245389524, now seen corresponding path program 1 times [2023-08-24 13:49:08,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:49:08,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427456416] [2023-08-24 13:49:08,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:49:08,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:49:08,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:49:08,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:49:08,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:49:08,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427456416] [2023-08-24 13:49:08,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427456416] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:49:08,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:49:08,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 13:49:08,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829411292] [2023-08-24 13:49:08,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:49:08,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 13:49:08,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:49:08,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 13:49:08,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 13:49:08,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 1095 [2023-08-24 13:49:08,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 44 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 445.0) internal successors, (1335), 3 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:08,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:49:08,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 1095 [2023-08-24 13:49:08,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:49:09,026 INFO L124 PetriNetUnfolderBase]: 943/1389 cut-off events. [2023-08-24 13:49:09,027 INFO L125 PetriNetUnfolderBase]: For 418/418 co-relation queries the response was YES. [2023-08-24 13:49:09,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3522 conditions, 1389 events. 943/1389 cut-off events. For 418/418 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5054 event pairs, 733 based on Foata normal form. 0/1333 useless extension candidates. Maximal degree in co-relation 2229. Up to 1389 conditions per place. [2023-08-24 13:49:09,032 INFO L140 encePairwiseOnDemand]: 1092/1095 looper letters, 43 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-08-24 13:49:09,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 45 transitions, 212 flow [2023-08-24 13:49:09,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 13:49:09,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 13:49:09,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1349 transitions. [2023-08-24 13:49:09,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4106544901065449 [2023-08-24 13:49:09,035 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1349 transitions. [2023-08-24 13:49:09,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1349 transitions. [2023-08-24 13:49:09,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:49:09,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1349 transitions. [2023-08-24 13:49:09,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 449.6666666666667) internal successors, (1349), 3 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:09,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1095.0) internal successors, (4380), 4 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:09,044 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1095.0) internal successors, (4380), 4 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:09,044 INFO L175 Difference]: Start difference. First operand has 42 places, 44 transitions, 120 flow. Second operand 3 states and 1349 transitions. [2023-08-24 13:49:09,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 45 transitions, 212 flow [2023-08-24 13:49:09,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 13:49:09,050 INFO L231 Difference]: Finished difference. Result has 43 places, 45 transitions, 126 flow [2023-08-24 13:49:09,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=43, PETRI_TRANSITIONS=45} [2023-08-24 13:49:09,051 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-08-24 13:49:09,054 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 45 transitions, 126 flow [2023-08-24 13:49:09,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 445.0) internal successors, (1335), 3 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:09,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:49:09,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:49:09,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 13:49:09,056 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 13:49:09,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:49:09,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1284413496, now seen corresponding path program 1 times [2023-08-24 13:49:09,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:49:09,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042587716] [2023-08-24 13:49:09,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:49:09,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:49:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:49:09,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 13:49:09,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:49:09,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042587716] [2023-08-24 13:49:09,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042587716] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:49:09,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:49:09,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 13:49:09,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677746660] [2023-08-24 13:49:09,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:49:09,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 13:49:09,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:49:09,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 13:49:09,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 13:49:09,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1095 [2023-08-24 13:49:09,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 430.75) internal successors, (1723), 4 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:09,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:49:09,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1095 [2023-08-24 13:49:09,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:49:09,456 INFO L124 PetriNetUnfolderBase]: 943/1390 cut-off events. [2023-08-24 13:49:09,456 INFO L125 PetriNetUnfolderBase]: For 256/256 co-relation queries the response was YES. [2023-08-24 13:49:09,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3374 conditions, 1390 events. 943/1390 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5054 event pairs, 733 based on Foata normal form. 0/1282 useless extension candidates. Maximal degree in co-relation 3361. Up to 1389 conditions per place. [2023-08-24 13:49:09,460 INFO L140 encePairwiseOnDemand]: 1091/1095 looper letters, 43 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2023-08-24 13:49:09,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 220 flow [2023-08-24 13:49:09,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 13:49:09,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 13:49:09,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1736 transitions. [2023-08-24 13:49:09,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3963470319634703 [2023-08-24 13:49:09,464 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1736 transitions. [2023-08-24 13:49:09,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1736 transitions. [2023-08-24 13:49:09,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:49:09,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1736 transitions. [2023-08-24 13:49:09,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 434.0) internal successors, (1736), 4 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:09,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1095.0) internal successors, (5475), 5 states have internal predecessors, (5475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:09,482 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1095.0) internal successors, (5475), 5 states have internal predecessors, (5475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:09,482 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 126 flow. Second operand 4 states and 1736 transitions. [2023-08-24 13:49:09,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 220 flow [2023-08-24 13:49:09,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 46 transitions, 216 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-24 13:49:09,485 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 136 flow [2023-08-24 13:49:09,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2023-08-24 13:49:09,487 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-08-24 13:49:09,487 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 136 flow [2023-08-24 13:49:09,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 430.75) internal successors, (1723), 4 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:09,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:49:09,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:49:09,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 13:49:09,488 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 13:49:09,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:49:09,488 INFO L85 PathProgramCache]: Analyzing trace with hash -429662275, now seen corresponding path program 1 times [2023-08-24 13:49:09,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:49:09,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921605322] [2023-08-24 13:49:09,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:49:09,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:49:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:49:09,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 13:49:09,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:49:09,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921605322] [2023-08-24 13:49:09,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921605322] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:49:09,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:49:09,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 13:49:09,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103866110] [2023-08-24 13:49:09,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:49:09,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 13:49:09,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:49:09,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 13:49:09,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 13:49:09,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1095 [2023-08-24 13:49:09,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:09,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:49:09,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1095 [2023-08-24 13:49:09,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:49:09,785 INFO L124 PetriNetUnfolderBase]: 943/1391 cut-off events. [2023-08-24 13:49:09,785 INFO L125 PetriNetUnfolderBase]: For 259/259 co-relation queries the response was YES. [2023-08-24 13:49:09,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3381 conditions, 1391 events. 943/1391 cut-off events. For 259/259 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5047 event pairs, 733 based on Foata normal form. 0/1284 useless extension candidates. Maximal degree in co-relation 3361. Up to 1389 conditions per place. [2023-08-24 13:49:09,791 INFO L140 encePairwiseOnDemand]: 1090/1095 looper letters, 43 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2023-08-24 13:49:09,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 47 transitions, 232 flow [2023-08-24 13:49:09,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 13:49:09,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 13:49:09,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1737 transitions. [2023-08-24 13:49:09,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39657534246575343 [2023-08-24 13:49:09,795 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1737 transitions. [2023-08-24 13:49:09,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1737 transitions. [2023-08-24 13:49:09,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:49:09,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1737 transitions. [2023-08-24 13:49:09,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 434.25) internal successors, (1737), 4 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:09,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1095.0) internal successors, (5475), 5 states have internal predecessors, (5475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:09,805 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1095.0) internal successors, (5475), 5 states have internal predecessors, (5475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:09,806 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 136 flow. Second operand 4 states and 1737 transitions. [2023-08-24 13:49:09,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 47 transitions, 232 flow [2023-08-24 13:49:09,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 47 transitions, 226 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-24 13:49:09,809 INFO L231 Difference]: Finished difference. Result has 48 places, 47 transitions, 148 flow [2023-08-24 13:49:09,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=48, PETRI_TRANSITIONS=47} [2023-08-24 13:49:09,811 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2023-08-24 13:49:09,811 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 47 transitions, 148 flow [2023-08-24 13:49:09,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:09,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:49:09,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:49:09,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 13:49:09,812 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 13:49:09,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:49:09,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1383967621, now seen corresponding path program 1 times [2023-08-24 13:49:09,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:49:09,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246813505] [2023-08-24 13:49:09,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:49:09,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:49:09,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:49:09,924 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 13:49:09,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:49:09,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246813505] [2023-08-24 13:49:09,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246813505] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:49:09,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:49:09,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 13:49:09,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867485954] [2023-08-24 13:49:09,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:49:09,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 13:49:09,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:49:09,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 13:49:09,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 13:49:09,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 1095 [2023-08-24 13:49:09,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 434.25) internal successors, (1737), 4 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:09,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:49:09,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 1095 [2023-08-24 13:49:09,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:49:10,132 INFO L124 PetriNetUnfolderBase]: 943/1392 cut-off events. [2023-08-24 13:49:10,132 INFO L125 PetriNetUnfolderBase]: For 260/260 co-relation queries the response was YES. [2023-08-24 13:49:10,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3389 conditions, 1392 events. 943/1392 cut-off events. For 260/260 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5047 event pairs, 733 based on Foata normal form. 0/1286 useless extension candidates. Maximal degree in co-relation 3366. Up to 1391 conditions per place. [2023-08-24 13:49:10,137 INFO L140 encePairwiseOnDemand]: 1091/1095 looper letters, 45 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2023-08-24 13:49:10,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 48 transitions, 246 flow [2023-08-24 13:49:10,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 13:49:10,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 13:49:10,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1748 transitions. [2023-08-24 13:49:10,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39908675799086757 [2023-08-24 13:49:10,141 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1748 transitions. [2023-08-24 13:49:10,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1748 transitions. [2023-08-24 13:49:10,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:49:10,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1748 transitions. [2023-08-24 13:49:10,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 437.0) internal successors, (1748), 4 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:10,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1095.0) internal successors, (5475), 5 states have internal predecessors, (5475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:10,149 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1095.0) internal successors, (5475), 5 states have internal predecessors, (5475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:10,149 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 148 flow. Second operand 4 states and 1748 transitions. [2023-08-24 13:49:10,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 48 transitions, 246 flow [2023-08-24 13:49:10,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 48 transitions, 242 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 13:49:10,151 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 158 flow [2023-08-24 13:49:10,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2023-08-24 13:49:10,152 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2023-08-24 13:49:10,152 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 158 flow [2023-08-24 13:49:10,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 434.25) internal successors, (1737), 4 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:10,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:49:10,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:49:10,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 13:49:10,153 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 13:49:10,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:49:10,153 INFO L85 PathProgramCache]: Analyzing trace with hash 2129030687, now seen corresponding path program 1 times [2023-08-24 13:49:10,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:49:10,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140310448] [2023-08-24 13:49:10,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:49:10,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:49:10,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:49:10,323 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 13:49:10,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:49:10,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140310448] [2023-08-24 13:49:10,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140310448] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 13:49:10,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288082143] [2023-08-24 13:49:10,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:49:10,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:49:10,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:49:10,326 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) [2023-08-24 13:49:10,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 13:49:10,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:49:10,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-24 13:49:10,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:49:10,531 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-24 13:49:10,531 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 13:49:10,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288082143] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:49:10,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 13:49:10,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-08-24 13:49:10,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512101014] [2023-08-24 13:49:10,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:49:10,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 13:49:10,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:49:10,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 13:49:10,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-24 13:49:10,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 1095 [2023-08-24 13:49:10,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 434.5) internal successors, (1738), 4 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:10,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:49:10,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 1095 [2023-08-24 13:49:10,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:49:10,710 INFO L124 PetriNetUnfolderBase]: 943/1393 cut-off events. [2023-08-24 13:49:10,711 INFO L125 PetriNetUnfolderBase]: For 259/259 co-relation queries the response was YES. [2023-08-24 13:49:10,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3396 conditions, 1393 events. 943/1393 cut-off events. For 259/259 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5060 event pairs, 733 based on Foata normal form. 0/1288 useless extension candidates. Maximal degree in co-relation 3372. Up to 1392 conditions per place. [2023-08-24 13:49:10,717 INFO L140 encePairwiseOnDemand]: 1091/1095 looper letters, 46 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2023-08-24 13:49:10,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 49 transitions, 258 flow [2023-08-24 13:49:10,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 13:49:10,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 13:49:10,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1748 transitions. [2023-08-24 13:49:10,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39908675799086757 [2023-08-24 13:49:10,721 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1748 transitions. [2023-08-24 13:49:10,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1748 transitions. [2023-08-24 13:49:10,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:49:10,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1748 transitions. [2023-08-24 13:49:10,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 437.0) internal successors, (1748), 4 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:10,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1095.0) internal successors, (5475), 5 states have internal predecessors, (5475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:10,728 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1095.0) internal successors, (5475), 5 states have internal predecessors, (5475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:10,728 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 158 flow. Second operand 4 states and 1748 transitions. [2023-08-24 13:49:10,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 49 transitions, 258 flow [2023-08-24 13:49:10,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 252 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-24 13:49:10,731 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 166 flow [2023-08-24 13:49:10,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2023-08-24 13:49:10,732 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2023-08-24 13:49:10,732 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 166 flow [2023-08-24 13:49:10,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 434.5) internal successors, (1738), 4 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:10,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:49:10,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:49:10,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-24 13:49:10,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:49:10,937 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 13:49:10,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:49:10,938 INFO L85 PathProgramCache]: Analyzing trace with hash -617936083, now seen corresponding path program 1 times [2023-08-24 13:49:10,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:49:10,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72230088] [2023-08-24 13:49:10,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:49:10,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:49:10,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:49:11,138 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-24 13:49:11,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:49:11,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72230088] [2023-08-24 13:49:11,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72230088] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:49:11,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:49:11,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 13:49:11,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532214282] [2023-08-24 13:49:11,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:49:11,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 13:49:11,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:49:11,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 13:49:11,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 13:49:11,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 1095 [2023-08-24 13:49:11,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 434.75) internal successors, (1739), 4 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:11,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:49:11,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 1095 [2023-08-24 13:49:11,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:49:11,303 INFO L124 PetriNetUnfolderBase]: 943/1394 cut-off events. [2023-08-24 13:49:11,303 INFO L125 PetriNetUnfolderBase]: For 261/261 co-relation queries the response was YES. [2023-08-24 13:49:11,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3402 conditions, 1394 events. 943/1394 cut-off events. For 261/261 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5048 event pairs, 733 based on Foata normal form. 0/1290 useless extension candidates. Maximal degree in co-relation 3377. Up to 1393 conditions per place. [2023-08-24 13:49:11,309 INFO L140 encePairwiseOnDemand]: 1091/1095 looper letters, 47 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2023-08-24 13:49:11,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 50 transitions, 268 flow [2023-08-24 13:49:11,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 13:49:11,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 13:49:11,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1748 transitions. [2023-08-24 13:49:11,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39908675799086757 [2023-08-24 13:49:11,312 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1748 transitions. [2023-08-24 13:49:11,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1748 transitions. [2023-08-24 13:49:11,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:49:11,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1748 transitions. [2023-08-24 13:49:11,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 437.0) internal successors, (1748), 4 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:11,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1095.0) internal successors, (5475), 5 states have internal predecessors, (5475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:11,319 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1095.0) internal successors, (5475), 5 states have internal predecessors, (5475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:11,320 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 166 flow. Second operand 4 states and 1748 transitions. [2023-08-24 13:49:11,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 50 transitions, 268 flow [2023-08-24 13:49:11,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 50 transitions, 262 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-24 13:49:11,322 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 174 flow [2023-08-24 13:49:11,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2023-08-24 13:49:11,323 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2023-08-24 13:49:11,324 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 174 flow [2023-08-24 13:49:11,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 434.75) internal successors, (1739), 4 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:11,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:49:11,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:49:11,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 13:49:11,325 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 13:49:11,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:49:11,325 INFO L85 PathProgramCache]: Analyzing trace with hash 439792446, now seen corresponding path program 1 times [2023-08-24 13:49:11,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:49:11,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797633465] [2023-08-24 13:49:11,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:49:11,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:49:11,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:49:11,646 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 13:49:11,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:49:11,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797633465] [2023-08-24 13:49:11,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797633465] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:49:11,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:49:11,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 13:49:11,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74970168] [2023-08-24 13:49:11,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:49:11,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 13:49:11,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:49:11,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 13:49:11,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 13:49:11,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 429 out of 1095 [2023-08-24 13:49:11,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:11,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:49:11,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 429 of 1095 [2023-08-24 13:49:11,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:49:12,026 INFO L124 PetriNetUnfolderBase]: 1580/2407 cut-off events. [2023-08-24 13:49:12,027 INFO L125 PetriNetUnfolderBase]: For 505/505 co-relation queries the response was YES. [2023-08-24 13:49:12,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5926 conditions, 2407 events. 1580/2407 cut-off events. For 505/505 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 10940 event pairs, 576 based on Foata normal form. 41/2301 useless extension candidates. Maximal degree in co-relation 5900. Up to 1210 conditions per place. [2023-08-24 13:49:12,037 INFO L140 encePairwiseOnDemand]: 1088/1095 looper letters, 101 selfloop transitions, 9 changer transitions 1/111 dead transitions. [2023-08-24 13:49:12,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 111 transitions, 571 flow [2023-08-24 13:49:12,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 13:49:12,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 13:49:12,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2248 transitions. [2023-08-24 13:49:12,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4105936073059361 [2023-08-24 13:49:12,042 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2248 transitions. [2023-08-24 13:49:12,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2248 transitions. [2023-08-24 13:49:12,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:49:12,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2248 transitions. [2023-08-24 13:49:12,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 449.6) internal successors, (2248), 5 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:12,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1095.0) internal successors, (6570), 6 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:12,051 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1095.0) internal successors, (6570), 6 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:12,051 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 174 flow. Second operand 5 states and 2248 transitions. [2023-08-24 13:49:12,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 111 transitions, 571 flow [2023-08-24 13:49:12,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 111 transitions, 565 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-24 13:49:12,057 INFO L231 Difference]: Finished difference. Result has 60 places, 58 transitions, 248 flow [2023-08-24 13:49:12,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=248, PETRI_PLACES=60, PETRI_TRANSITIONS=58} [2023-08-24 13:49:12,058 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 18 predicate places. [2023-08-24 13:49:12,058 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 58 transitions, 248 flow [2023-08-24 13:49:12,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:12,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:49:12,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:49:12,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 13:49:12,059 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 13:49:12,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:49:12,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1603584644, now seen corresponding path program 2 times [2023-08-24 13:49:12,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:49:12,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839342718] [2023-08-24 13:49:12,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:49:12,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:49:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:49:12,250 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 13:49:12,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:49:12,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839342718] [2023-08-24 13:49:12,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839342718] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:49:12,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:49:12,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 13:49:12,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452830230] [2023-08-24 13:49:12,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:49:12,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 13:49:12,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:49:12,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 13:49:12,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 13:49:12,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 429 out of 1095 [2023-08-24 13:49:12,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 58 transitions, 248 flow. Second operand has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:12,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:49:12,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 429 of 1095 [2023-08-24 13:49:12,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:49:12,680 INFO L124 PetriNetUnfolderBase]: 2070/3161 cut-off events. [2023-08-24 13:49:12,680 INFO L125 PetriNetUnfolderBase]: For 2734/2734 co-relation queries the response was YES. [2023-08-24 13:49:12,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9112 conditions, 3161 events. 2070/3161 cut-off events. For 2734/2734 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 15541 event pairs, 738 based on Foata normal form. 18/2949 useless extension candidates. Maximal degree in co-relation 9084. Up to 1958 conditions per place. [2023-08-24 13:49:12,700 INFO L140 encePairwiseOnDemand]: 1088/1095 looper letters, 101 selfloop transitions, 14 changer transitions 0/115 dead transitions. [2023-08-24 13:49:12,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 115 transitions, 676 flow [2023-08-24 13:49:12,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 13:49:12,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 13:49:12,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2239 transitions. [2023-08-24 13:49:12,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4089497716894977 [2023-08-24 13:49:12,704 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2239 transitions. [2023-08-24 13:49:12,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2239 transitions. [2023-08-24 13:49:12,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:49:12,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2239 transitions. [2023-08-24 13:49:12,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 447.8) internal successors, (2239), 5 states have internal predecessors, (2239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:12,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1095.0) internal successors, (6570), 6 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:12,713 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1095.0) internal successors, (6570), 6 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:12,713 INFO L175 Difference]: Start difference. First operand has 60 places, 58 transitions, 248 flow. Second operand 5 states and 2239 transitions. [2023-08-24 13:49:12,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 115 transitions, 676 flow [2023-08-24 13:49:12,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 115 transitions, 668 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-24 13:49:12,726 INFO L231 Difference]: Finished difference. Result has 67 places, 68 transitions, 357 flow [2023-08-24 13:49:12,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=357, PETRI_PLACES=67, PETRI_TRANSITIONS=68} [2023-08-24 13:49:12,727 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2023-08-24 13:49:12,727 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 68 transitions, 357 flow [2023-08-24 13:49:12,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:12,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:49:12,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:49:12,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 13:49:12,728 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 13:49:12,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:49:12,729 INFO L85 PathProgramCache]: Analyzing trace with hash 407750096, now seen corresponding path program 1 times [2023-08-24 13:49:12,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:49:12,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572670201] [2023-08-24 13:49:12,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:49:12,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:49:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:49:13,075 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 13:49:13,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:49:13,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572670201] [2023-08-24 13:49:13,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572670201] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:49:13,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:49:13,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 13:49:13,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423698862] [2023-08-24 13:49:13,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:49:13,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 13:49:13,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:49:13,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 13:49:13,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-24 13:49:13,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 1095 [2023-08-24 13:49:13,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 68 transitions, 357 flow. Second operand has 8 states, 8 states have (on average 411.5) internal successors, (3292), 8 states have internal predecessors, (3292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:13,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:49:13,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 1095 [2023-08-24 13:49:13,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:49:13,800 INFO L124 PetriNetUnfolderBase]: 3204/4907 cut-off events. [2023-08-24 13:49:13,800 INFO L125 PetriNetUnfolderBase]: For 7599/7599 co-relation queries the response was YES. [2023-08-24 13:49:13,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15352 conditions, 4907 events. 3204/4907 cut-off events. For 7599/7599 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 26712 event pairs, 1153 based on Foata normal form. 22/4745 useless extension candidates. Maximal degree in co-relation 15320. Up to 2716 conditions per place. [2023-08-24 13:49:13,822 INFO L140 encePairwiseOnDemand]: 1086/1095 looper letters, 145 selfloop transitions, 14 changer transitions 0/159 dead transitions. [2023-08-24 13:49:13,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 159 transitions, 1203 flow [2023-08-24 13:49:13,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 13:49:13,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 13:49:13,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2945 transitions. [2023-08-24 13:49:13,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3842139595564253 [2023-08-24 13:49:13,828 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2945 transitions. [2023-08-24 13:49:13,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2945 transitions. [2023-08-24 13:49:13,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:49:13,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2945 transitions. [2023-08-24 13:49:13,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 420.7142857142857) internal successors, (2945), 7 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:13,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1095.0) internal successors, (8760), 8 states have internal predecessors, (8760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:13,841 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1095.0) internal successors, (8760), 8 states have internal predecessors, (8760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:13,841 INFO L175 Difference]: Start difference. First operand has 67 places, 68 transitions, 357 flow. Second operand 7 states and 2945 transitions. [2023-08-24 13:49:13,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 159 transitions, 1203 flow [2023-08-24 13:49:13,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 159 transitions, 1187 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-08-24 13:49:13,861 INFO L231 Difference]: Finished difference. Result has 76 places, 76 transitions, 442 flow [2023-08-24 13:49:13,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=442, PETRI_PLACES=76, PETRI_TRANSITIONS=76} [2023-08-24 13:49:13,861 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 34 predicate places. [2023-08-24 13:49:13,861 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 76 transitions, 442 flow [2023-08-24 13:49:13,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 411.5) internal successors, (3292), 8 states have internal predecessors, (3292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:13,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:49:13,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:49:13,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-24 13:49:13,863 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 13:49:13,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:49:13,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1132387587, now seen corresponding path program 1 times [2023-08-24 13:49:13,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:49:13,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104114526] [2023-08-24 13:49:13,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:49:13,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:49:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:49:15,948 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 13:49:15,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:49:15,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104114526] [2023-08-24 13:49:15,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104114526] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:49:15,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:49:15,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-08-24 13:49:15,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463215356] [2023-08-24 13:49:15,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:49:15,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-24 13:49:15,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:49:15,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-24 13:49:15,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-08-24 13:49:15,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 351 out of 1095 [2023-08-24 13:49:15,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 76 transitions, 442 flow. Second operand has 16 states, 16 states have (on average 353.25) internal successors, (5652), 16 states have internal predecessors, (5652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:15,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:49:15,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 351 of 1095 [2023-08-24 13:49:15,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:49:21,865 INFO L124 PetriNetUnfolderBase]: 10288/16473 cut-off events. [2023-08-24 13:49:21,866 INFO L125 PetriNetUnfolderBase]: For 34895/34895 co-relation queries the response was YES. [2023-08-24 13:49:21,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57682 conditions, 16473 events. 10288/16473 cut-off events. For 34895/34895 co-relation queries the response was YES. Maximal size of possible extension queue 1014. Compared 118120 event pairs, 1801 based on Foata normal form. 2/16474 useless extension candidates. Maximal degree in co-relation 57645. Up to 3928 conditions per place. [2023-08-24 13:49:22,005 INFO L140 encePairwiseOnDemand]: 1075/1095 looper letters, 382 selfloop transitions, 264 changer transitions 14/660 dead transitions. [2023-08-24 13:49:22,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 660 transitions, 5295 flow [2023-08-24 13:49:22,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-08-24 13:49:22,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-08-24 13:49:22,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 13780 transitions. [2023-08-24 13:49:22,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33117039173275653 [2023-08-24 13:49:22,027 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 13780 transitions. [2023-08-24 13:49:22,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 13780 transitions. [2023-08-24 13:49:22,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:49:22,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 13780 transitions. [2023-08-24 13:49:22,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 362.63157894736844) internal successors, (13780), 38 states have internal predecessors, (13780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:22,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 1095.0) internal successors, (42705), 39 states have internal predecessors, (42705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:22,090 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 1095.0) internal successors, (42705), 39 states have internal predecessors, (42705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:22,091 INFO L175 Difference]: Start difference. First operand has 76 places, 76 transitions, 442 flow. Second operand 38 states and 13780 transitions. [2023-08-24 13:49:22,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 660 transitions, 5295 flow [2023-08-24 13:49:22,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 660 transitions, 5292 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 13:49:22,267 INFO L231 Difference]: Finished difference. Result has 137 places, 362 transitions, 3730 flow [2023-08-24 13:49:22,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3730, PETRI_PLACES=137, PETRI_TRANSITIONS=362} [2023-08-24 13:49:22,268 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 95 predicate places. [2023-08-24 13:49:22,268 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 362 transitions, 3730 flow [2023-08-24 13:49:22,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 353.25) internal successors, (5652), 16 states have internal predecessors, (5652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:22,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:49:22,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:49:22,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-24 13:49:22,270 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 13:49:22,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:49:22,270 INFO L85 PathProgramCache]: Analyzing trace with hash -239115315, now seen corresponding path program 2 times [2023-08-24 13:49:22,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:49:22,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520034777] [2023-08-24 13:49:22,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:49:22,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:49:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:49:23,955 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 13:49:23,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:49:23,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520034777] [2023-08-24 13:49:23,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520034777] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:49:23,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:49:23,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-24 13:49:23,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537935787] [2023-08-24 13:49:23,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:49:23,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 13:49:23,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:49:23,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 13:49:23,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-08-24 13:49:23,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 380 out of 1095 [2023-08-24 13:49:23,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 362 transitions, 3730 flow. Second operand has 12 states, 12 states have (on average 383.0) internal successors, (4596), 12 states have internal predecessors, (4596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:23,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:49:23,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 380 of 1095 [2023-08-24 13:49:23,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:49:28,235 INFO L124 PetriNetUnfolderBase]: 13456/21694 cut-off events. [2023-08-24 13:49:28,236 INFO L125 PetriNetUnfolderBase]: For 220245/220245 co-relation queries the response was YES. [2023-08-24 13:49:28,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113579 conditions, 21694 events. 13456/21694 cut-off events. For 220245/220245 co-relation queries the response was YES. Maximal size of possible extension queue 1346. Compared 163101 event pairs, 3456 based on Foata normal form. 1/21694 useless extension candidates. Maximal degree in co-relation 113515. Up to 11098 conditions per place. [2023-08-24 13:49:28,365 INFO L140 encePairwiseOnDemand]: 1084/1095 looper letters, 481 selfloop transitions, 98 changer transitions 7/586 dead transitions. [2023-08-24 13:49:28,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 586 transitions, 7050 flow [2023-08-24 13:49:28,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-24 13:49:28,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-24 13:49:28,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4316 transitions. [2023-08-24 13:49:28,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3583229555832296 [2023-08-24 13:49:28,371 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4316 transitions. [2023-08-24 13:49:28,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4316 transitions. [2023-08-24 13:49:28,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:49:28,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4316 transitions. [2023-08-24 13:49:28,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 392.3636363636364) internal successors, (4316), 11 states have internal predecessors, (4316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:28,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 1095.0) internal successors, (13140), 12 states have internal predecessors, (13140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:28,382 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 1095.0) internal successors, (13140), 12 states have internal predecessors, (13140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:28,382 INFO L175 Difference]: Start difference. First operand has 137 places, 362 transitions, 3730 flow. Second operand 11 states and 4316 transitions. [2023-08-24 13:49:28,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 586 transitions, 7050 flow [2023-08-24 13:49:30,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 586 transitions, 6939 flow, removed 53 selfloop flow, removed 5 redundant places. [2023-08-24 13:49:30,919 INFO L231 Difference]: Finished difference. Result has 146 places, 383 transitions, 4189 flow [2023-08-24 13:49:30,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=3651, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4189, PETRI_PLACES=146, PETRI_TRANSITIONS=383} [2023-08-24 13:49:30,920 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 104 predicate places. [2023-08-24 13:49:30,921 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 383 transitions, 4189 flow [2023-08-24 13:49:30,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 383.0) internal successors, (4596), 12 states have internal predecessors, (4596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:30,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:49:30,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:49:30,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-24 13:49:30,937 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 13:49:30,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:49:30,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1803316229, now seen corresponding path program 3 times [2023-08-24 13:49:30,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:49:30,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995941796] [2023-08-24 13:49:30,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:49:30,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:49:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:49:32,003 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 13:49:32,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:49:32,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995941796] [2023-08-24 13:49:32,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995941796] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:49:32,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:49:32,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-24 13:49:32,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166442768] [2023-08-24 13:49:32,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:49:32,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 13:49:32,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:49:32,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 13:49:32,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-08-24 13:49:32,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 393 out of 1095 [2023-08-24 13:49:32,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 383 transitions, 4189 flow. Second operand has 9 states, 9 states have (on average 397.0) internal successors, (3573), 9 states have internal predecessors, (3573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:32,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:49:32,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 393 of 1095 [2023-08-24 13:49:32,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:49:36,738 INFO L124 PetriNetUnfolderBase]: 14763/24257 cut-off events. [2023-08-24 13:49:36,739 INFO L125 PetriNetUnfolderBase]: For 260091/260091 co-relation queries the response was YES. [2023-08-24 13:49:36,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131020 conditions, 24257 events. 14763/24257 cut-off events. For 260091/260091 co-relation queries the response was YES. Maximal size of possible extension queue 1518. Compared 190578 event pairs, 3478 based on Foata normal form. 1/24257 useless extension candidates. Maximal degree in co-relation 130952. Up to 12245 conditions per place. [2023-08-24 13:49:37,021 INFO L140 encePairwiseOnDemand]: 1087/1095 looper letters, 660 selfloop transitions, 31 changer transitions 7/698 dead transitions. [2023-08-24 13:49:37,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 698 transitions, 8880 flow [2023-08-24 13:49:37,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 13:49:37,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 13:49:37,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3668 transitions. [2023-08-24 13:49:37,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721968543886352 [2023-08-24 13:49:37,030 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3668 transitions. [2023-08-24 13:49:37,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3668 transitions. [2023-08-24 13:49:37,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:49:37,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3668 transitions. [2023-08-24 13:49:37,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 407.55555555555554) internal successors, (3668), 9 states have internal predecessors, (3668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:37,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1095.0) internal successors, (10950), 10 states have internal predecessors, (10950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:37,040 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1095.0) internal successors, (10950), 10 states have internal predecessors, (10950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:37,040 INFO L175 Difference]: Start difference. First operand has 146 places, 383 transitions, 4189 flow. Second operand 9 states and 3668 transitions. [2023-08-24 13:49:37,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 698 transitions, 8880 flow [2023-08-24 13:49:40,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 698 transitions, 8767 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-24 13:49:40,084 INFO L231 Difference]: Finished difference. Result has 155 places, 388 transitions, 4265 flow [2023-08-24 13:49:40,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=4108, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4265, PETRI_PLACES=155, PETRI_TRANSITIONS=388} [2023-08-24 13:49:40,084 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 113 predicate places. [2023-08-24 13:49:40,085 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 388 transitions, 4265 flow [2023-08-24 13:49:40,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 397.0) internal successors, (3573), 9 states have internal predecessors, (3573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:40,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:49:40,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:49:40,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-24 13:49:40,092 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 13:49:40,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:49:40,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1002542507, now seen corresponding path program 4 times [2023-08-24 13:49:40,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:49:40,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116961349] [2023-08-24 13:49:40,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:49:40,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:49:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:49:41,396 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 13:49:41,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:49:41,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116961349] [2023-08-24 13:49:41,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116961349] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:49:41,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:49:41,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-24 13:49:41,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722015887] [2023-08-24 13:49:41,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:49:41,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-24 13:49:41,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:49:41,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-24 13:49:41,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-08-24 13:49:41,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 362 out of 1095 [2023-08-24 13:49:41,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 388 transitions, 4265 flow. Second operand has 14 states, 14 states have (on average 364.57142857142856) internal successors, (5104), 14 states have internal predecessors, (5104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:41,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:49:41,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 362 of 1095 [2023-08-24 13:49:41,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:49:46,976 INFO L124 PetriNetUnfolderBase]: 15205/25487 cut-off events. [2023-08-24 13:49:46,976 INFO L125 PetriNetUnfolderBase]: For 292676/292676 co-relation queries the response was YES. [2023-08-24 13:49:47,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141111 conditions, 25487 events. 15205/25487 cut-off events. For 292676/292676 co-relation queries the response was YES. Maximal size of possible extension queue 1572. Compared 207971 event pairs, 3993 based on Foata normal form. 1/25487 useless extension candidates. Maximal degree in co-relation 141039. Up to 12092 conditions per place. [2023-08-24 13:49:47,242 INFO L140 encePairwiseOnDemand]: 1079/1095 looper letters, 519 selfloop transitions, 162 changer transitions 8/689 dead transitions. [2023-08-24 13:49:47,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 689 transitions, 8668 flow [2023-08-24 13:49:47,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-24 13:49:47,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-24 13:49:47,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 4858 transitions. [2023-08-24 13:49:47,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3412715138742536 [2023-08-24 13:49:47,249 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 4858 transitions. [2023-08-24 13:49:47,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 4858 transitions. [2023-08-24 13:49:47,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:49:47,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 4858 transitions. [2023-08-24 13:49:47,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 373.6923076923077) internal successors, (4858), 13 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:47,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 1095.0) internal successors, (15330), 14 states have internal predecessors, (15330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:47,285 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 1095.0) internal successors, (15330), 14 states have internal predecessors, (15330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:47,285 INFO L175 Difference]: Start difference. First operand has 155 places, 388 transitions, 4265 flow. Second operand 13 states and 4858 transitions. [2023-08-24 13:49:47,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 689 transitions, 8668 flow [2023-08-24 13:49:51,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 689 transitions, 8582 flow, removed 17 selfloop flow, removed 2 redundant places. [2023-08-24 13:49:51,872 INFO L231 Difference]: Finished difference. Result has 172 places, 433 transitions, 5449 flow [2023-08-24 13:49:51,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=4235, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5449, PETRI_PLACES=172, PETRI_TRANSITIONS=433} [2023-08-24 13:49:51,872 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 130 predicate places. [2023-08-24 13:49:51,872 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 433 transitions, 5449 flow [2023-08-24 13:49:51,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 364.57142857142856) internal successors, (5104), 14 states have internal predecessors, (5104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:51,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:49:51,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:49:51,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-24 13:49:51,873 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 13:49:51,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:49:51,874 INFO L85 PathProgramCache]: Analyzing trace with hash -214176279, now seen corresponding path program 5 times [2023-08-24 13:49:51,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:49:51,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827498001] [2023-08-24 13:49:51,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:49:51,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:49:51,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:49:53,189 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 13:49:53,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:49:53,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827498001] [2023-08-24 13:49:53,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827498001] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:49:53,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:49:53,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-24 13:49:53,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724624891] [2023-08-24 13:49:53,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:49:53,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-24 13:49:53,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:49:53,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-24 13:49:53,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-08-24 13:49:53,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 371 out of 1095 [2023-08-24 13:49:53,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 433 transitions, 5449 flow. Second operand has 13 states, 13 states have (on average 373.7692307692308) internal successors, (4859), 13 states have internal predecessors, (4859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:49:53,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:49:53,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 371 of 1095 [2023-08-24 13:49:53,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:50:01,184 INFO L124 PetriNetUnfolderBase]: 25249/43164 cut-off events. [2023-08-24 13:50:01,184 INFO L125 PetriNetUnfolderBase]: For 562905/562905 co-relation queries the response was YES. [2023-08-24 13:50:01,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251485 conditions, 43164 events. 25249/43164 cut-off events. For 562905/562905 co-relation queries the response was YES. Maximal size of possible extension queue 2740. Compared 389749 event pairs, 7894 based on Foata normal form. 2/43165 useless extension candidates. Maximal degree in co-relation 251404. Up to 15555 conditions per place. [2023-08-24 13:50:01,724 INFO L140 encePairwiseOnDemand]: 1085/1095 looper letters, 958 selfloop transitions, 48 changer transitions 8/1014 dead transitions. [2023-08-24 13:50:01,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 1014 transitions, 14666 flow [2023-08-24 13:50:01,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-24 13:50:01,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-24 13:50:01,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3851 transitions. [2023-08-24 13:50:01,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35168949771689495 [2023-08-24 13:50:01,742 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3851 transitions. [2023-08-24 13:50:01,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3851 transitions. [2023-08-24 13:50:01,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:50:01,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3851 transitions. [2023-08-24 13:50:01,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 385.1) internal successors, (3851), 10 states have internal predecessors, (3851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:50:01,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1095.0) internal successors, (12045), 11 states have internal predecessors, (12045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:50:01,753 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1095.0) internal successors, (12045), 11 states have internal predecessors, (12045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:50:01,753 INFO L175 Difference]: Start difference. First operand has 172 places, 433 transitions, 5449 flow. Second operand 10 states and 3851 transitions. [2023-08-24 13:50:01,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 1014 transitions, 14666 flow [2023-08-24 13:50:14,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 1014 transitions, 14387 flow, removed 45 selfloop flow, removed 5 redundant places. [2023-08-24 13:50:14,818 INFO L231 Difference]: Finished difference. Result has 182 places, 454 transitions, 5712 flow [2023-08-24 13:50:14,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=5285, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5712, PETRI_PLACES=182, PETRI_TRANSITIONS=454} [2023-08-24 13:50:14,818 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 140 predicate places. [2023-08-24 13:50:14,818 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 454 transitions, 5712 flow [2023-08-24 13:50:14,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 373.7692307692308) internal successors, (4859), 13 states have internal predecessors, (4859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:50:14,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:50:14,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:50:14,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-24 13:50:14,819 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 13:50:14,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:50:14,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1487682827, now seen corresponding path program 6 times [2023-08-24 13:50:14,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:50:14,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926576203] [2023-08-24 13:50:14,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:50:14,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:50:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:50:16,213 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 13:50:16,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:50:16,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926576203] [2023-08-24 13:50:16,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926576203] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:50:16,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:50:16,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-24 13:50:16,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525110760] [2023-08-24 13:50:16,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:50:16,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-24 13:50:16,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:50:16,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-24 13:50:16,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-08-24 13:50:16,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 371 out of 1095 [2023-08-24 13:50:16,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 454 transitions, 5712 flow. Second operand has 13 states, 13 states have (on average 373.7692307692308) internal successors, (4859), 13 states have internal predecessors, (4859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:50:16,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:50:16,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 371 of 1095 [2023-08-24 13:50:16,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:50:26,400 INFO L124 PetriNetUnfolderBase]: 26812/46000 cut-off events. [2023-08-24 13:50:26,400 INFO L125 PetriNetUnfolderBase]: For 635341/635341 co-relation queries the response was YES. [2023-08-24 13:50:26,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278109 conditions, 46000 events. 26812/46000 cut-off events. For 635341/635341 co-relation queries the response was YES. Maximal size of possible extension queue 2887. Compared 418001 event pairs, 6598 based on Foata normal form. 1/46000 useless extension candidates. Maximal degree in co-relation 278023. Up to 16692 conditions per place. [2023-08-24 13:50:26,999 INFO L140 encePairwiseOnDemand]: 1079/1095 looper letters, 356 selfloop transitions, 362 changer transitions 7/725 dead transitions. [2023-08-24 13:50:26,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 725 transitions, 10296 flow [2023-08-24 13:50:27,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-24 13:50:27,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-24 13:50:27,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 6883 transitions. [2023-08-24 13:50:27,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3492135971588026 [2023-08-24 13:50:27,020 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 6883 transitions. [2023-08-24 13:50:27,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 6883 transitions. [2023-08-24 13:50:27,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:50:27,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 6883 transitions. [2023-08-24 13:50:27,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 382.3888888888889) internal successors, (6883), 18 states have internal predecessors, (6883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:50:27,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 1095.0) internal successors, (20805), 19 states have internal predecessors, (20805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:50:27,051 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 1095.0) internal successors, (20805), 19 states have internal predecessors, (20805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:50:27,051 INFO L175 Difference]: Start difference. First operand has 182 places, 454 transitions, 5712 flow. Second operand 18 states and 6883 transitions. [2023-08-24 13:50:27,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 725 transitions, 10296 flow [2023-08-24 13:50:42,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 725 transitions, 10227 flow, removed 25 selfloop flow, removed 3 redundant places. [2023-08-24 13:50:42,447 INFO L231 Difference]: Finished difference. Result has 202 places, 554 transitions, 7972 flow [2023-08-24 13:50:42,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=5675, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=263, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=7972, PETRI_PLACES=202, PETRI_TRANSITIONS=554} [2023-08-24 13:50:42,447 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 160 predicate places. [2023-08-24 13:50:42,447 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 554 transitions, 7972 flow [2023-08-24 13:50:42,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 373.7692307692308) internal successors, (4859), 13 states have internal predecessors, (4859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:50:42,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:50:42,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:50:42,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-24 13:50:42,448 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 13:50:42,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:50:42,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1563862965, now seen corresponding path program 7 times [2023-08-24 13:50:42,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:50:42,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032355176] [2023-08-24 13:50:42,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:50:42,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:50:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:50:43,768 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 13:50:43,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:50:43,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032355176] [2023-08-24 13:50:43,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032355176] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:50:43,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:50:43,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-08-24 13:50:43,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348881779] [2023-08-24 13:50:43,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:50:43,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-24 13:50:43,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:50:43,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-24 13:50:43,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2023-08-24 13:50:43,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 1095 [2023-08-24 13:50:43,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 554 transitions, 7972 flow. Second operand has 17 states, 17 states have (on average 346.11764705882354) internal successors, (5884), 17 states have internal predecessors, (5884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:50:43,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:50:43,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 1095 [2023-08-24 13:50:43,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:50:57,673 INFO L124 PetriNetUnfolderBase]: 31984/55909 cut-off events. [2023-08-24 13:50:57,674 INFO L125 PetriNetUnfolderBase]: For 801657/801657 co-relation queries the response was YES. [2023-08-24 13:50:58,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351079 conditions, 55909 events. 31984/55909 cut-off events. For 801657/801657 co-relation queries the response was YES. Maximal size of possible extension queue 3533. Compared 536839 event pairs, 6689 based on Foata normal form. 2/55910 useless extension candidates. Maximal degree in co-relation 350986. Up to 14662 conditions per place. [2023-08-24 13:50:58,625 INFO L140 encePairwiseOnDemand]: 1077/1095 looper letters, 1012 selfloop transitions, 532 changer transitions 8/1552 dead transitions. [2023-08-24 13:50:58,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 1552 transitions, 24688 flow [2023-08-24 13:50:58,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-24 13:50:58,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-24 13:50:58,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 6746 transitions. [2023-08-24 13:50:58,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32424897861091084 [2023-08-24 13:50:58,632 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 6746 transitions. [2023-08-24 13:50:58,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 6746 transitions. [2023-08-24 13:50:58,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:50:58,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 6746 transitions. [2023-08-24 13:50:58,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 355.05263157894734) internal successors, (6746), 19 states have internal predecessors, (6746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:50:58,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 1095.0) internal successors, (21900), 20 states have internal predecessors, (21900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:50:58,679 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 1095.0) internal successors, (21900), 20 states have internal predecessors, (21900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:50:58,679 INFO L175 Difference]: Start difference. First operand has 202 places, 554 transitions, 7972 flow. Second operand 19 states and 6746 transitions. [2023-08-24 13:50:58,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 1552 transitions, 24688 flow [2023-08-24 13:51:23,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 1552 transitions, 24539 flow, removed 73 selfloop flow, removed 3 redundant places. [2023-08-24 13:51:23,432 INFO L231 Difference]: Finished difference. Result has 231 places, 1022 transitions, 17439 flow [2023-08-24 13:51:23,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=7899, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=17439, PETRI_PLACES=231, PETRI_TRANSITIONS=1022} [2023-08-24 13:51:23,432 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 189 predicate places. [2023-08-24 13:51:23,432 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 1022 transitions, 17439 flow [2023-08-24 13:51:23,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 346.11764705882354) internal successors, (5884), 17 states have internal predecessors, (5884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:51:23,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:51:23,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:51:23,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-24 13:51:23,433 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 13:51:23,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:51:23,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1329966495, now seen corresponding path program 8 times [2023-08-24 13:51:23,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:51:23,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942875844] [2023-08-24 13:51:23,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:51:23,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:51:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:51:24,652 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 13:51:24,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:51:24,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942875844] [2023-08-24 13:51:24,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942875844] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:51:24,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:51:24,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-24 13:51:24,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595645529] [2023-08-24 13:51:24,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:51:24,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-24 13:51:24,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:51:24,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-24 13:51:24,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-08-24 13:51:24,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 375 out of 1095 [2023-08-24 13:51:24,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 1022 transitions, 17439 flow. Second operand has 11 states, 11 states have (on average 378.27272727272725) internal successors, (4161), 11 states have internal predecessors, (4161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:51:24,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:51:24,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 375 of 1095 [2023-08-24 13:51:24,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:51:53,922 INFO L124 PetriNetUnfolderBase]: 51339/91280 cut-off events. [2023-08-24 13:51:53,922 INFO L125 PetriNetUnfolderBase]: For 1832215/1832215 co-relation queries the response was YES. [2023-08-24 13:51:55,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 667575 conditions, 91280 events. 51339/91280 cut-off events. For 1832215/1832215 co-relation queries the response was YES. Maximal size of possible extension queue 5759. Compared 950363 event pairs, 13843 based on Foata normal form. 2/91281 useless extension candidates. Maximal degree in co-relation 667468. Up to 41053 conditions per place. [2023-08-24 13:51:55,779 INFO L140 encePairwiseOnDemand]: 1078/1095 looper letters, 1072 selfloop transitions, 1127 changer transitions 14/2213 dead transitions. [2023-08-24 13:51:55,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 2213 transitions, 41807 flow [2023-08-24 13:51:55,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-08-24 13:51:55,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-08-24 13:51:55,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 15083 transitions. [2023-08-24 13:51:55,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3531904929165203 [2023-08-24 13:51:55,788 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 15083 transitions. [2023-08-24 13:51:55,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 15083 transitions. [2023-08-24 13:51:55,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:51:55,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 15083 transitions. [2023-08-24 13:51:55,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 386.7435897435897) internal successors, (15083), 39 states have internal predecessors, (15083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:51:55,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 1095.0) internal successors, (43800), 40 states have internal predecessors, (43800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:51:55,818 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 1095.0) internal successors, (43800), 40 states have internal predecessors, (43800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:51:55,818 INFO L175 Difference]: Start difference. First operand has 231 places, 1022 transitions, 17439 flow. Second operand 39 states and 15083 transitions. [2023-08-24 13:51:55,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 2213 transitions, 41807 flow [2023-08-24 13:54:28,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 2213 transitions, 40255 flow, removed 743 selfloop flow, removed 4 redundant places. [2023-08-24 13:54:28,367 INFO L231 Difference]: Finished difference. Result has 292 places, 1674 transitions, 33136 flow [2023-08-24 13:54:28,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=17076, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1022, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=542, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=33136, PETRI_PLACES=292, PETRI_TRANSITIONS=1674} [2023-08-24 13:54:28,368 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 250 predicate places. [2023-08-24 13:54:28,368 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 1674 transitions, 33136 flow [2023-08-24 13:54:28,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 378.27272727272725) internal successors, (4161), 11 states have internal predecessors, (4161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:54:28,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:54:28,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:54:28,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-24 13:54:28,369 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 13:54:28,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:54:28,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1985117550, now seen corresponding path program 3 times [2023-08-24 13:54:28,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:54:28,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955390439] [2023-08-24 13:54:28,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:54:28,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:54:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:54:28,536 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 13:54:28,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:54:28,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955390439] [2023-08-24 13:54:28,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955390439] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:54:28,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:54:28,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 13:54:28,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306393360] [2023-08-24 13:54:28,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:54:28,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 13:54:28,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:54:28,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 13:54:28,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-24 13:54:28,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 1095 [2023-08-24 13:54:28,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 1674 transitions, 33136 flow. Second operand has 8 states, 8 states have (on average 411.5) internal successors, (3292), 8 states have internal predecessors, (3292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:54:28,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:54:28,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 1095 [2023-08-24 13:54:28,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:55:05,735 INFO L124 PetriNetUnfolderBase]: 49728/88759 cut-off events. [2023-08-24 13:55:05,735 INFO L125 PetriNetUnfolderBase]: For 2005711/2005711 co-relation queries the response was YES. [2023-08-24 13:55:08,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 696725 conditions, 88759 events. 49728/88759 cut-off events. For 2005711/2005711 co-relation queries the response was YES. Maximal size of possible extension queue 5572. Compared 923495 event pairs, 16472 based on Foata normal form. 322/89080 useless extension candidates. Maximal degree in co-relation 696592. Up to 37552 conditions per place. [2023-08-24 13:55:08,441 INFO L140 encePairwiseOnDemand]: 1087/1095 looper letters, 2090 selfloop transitions, 411 changer transitions 24/2525 dead transitions. [2023-08-24 13:55:08,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 2525 transitions, 54200 flow [2023-08-24 13:55:08,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 13:55:08,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 13:55:08,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2529 transitions. [2023-08-24 13:55:08,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38493150684931504 [2023-08-24 13:55:08,443 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2529 transitions. [2023-08-24 13:55:08,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2529 transitions. [2023-08-24 13:55:08,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:55:08,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2529 transitions. [2023-08-24 13:55:08,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 421.5) internal successors, (2529), 6 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:55:08,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1095.0) internal successors, (7665), 7 states have internal predecessors, (7665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:55:08,449 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1095.0) internal successors, (7665), 7 states have internal predecessors, (7665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:55:08,449 INFO L175 Difference]: Start difference. First operand has 292 places, 1674 transitions, 33136 flow. Second operand 6 states and 2529 transitions. [2023-08-24 13:55:08,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 2525 transitions, 54200 flow [2023-08-24 13:57:05,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 2525 transitions, 53184 flow, removed 508 selfloop flow, removed 2 redundant places. [2023-08-24 13:57:06,017 INFO L231 Difference]: Finished difference. Result has 296 places, 1695 transitions, 34618 flow [2023-08-24 13:57:06,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=32390, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=390, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=34618, PETRI_PLACES=296, PETRI_TRANSITIONS=1695} [2023-08-24 13:57:06,019 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 254 predicate places. [2023-08-24 13:57:06,019 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 1695 transitions, 34618 flow [2023-08-24 13:57:06,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 411.5) internal successors, (3292), 8 states have internal predecessors, (3292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:06,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:57:06,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:57:06,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-24 13:57:06,019 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 13:57:06,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:57:06,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1985542241, now seen corresponding path program 9 times [2023-08-24 13:57:06,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:57:06,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071963374] [2023-08-24 13:57:06,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:57:06,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:57:06,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:57:07,218 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 13:57:07,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:57:07,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071963374] [2023-08-24 13:57:07,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071963374] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:57:07,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:57:07,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-24 13:57:07,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323097024] [2023-08-24 13:57:07,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:57:07,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 13:57:07,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:57:07,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 13:57:07,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-08-24 13:57:07,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 393 out of 1095 [2023-08-24 13:57:07,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 1695 transitions, 34618 flow. Second operand has 9 states, 9 states have (on average 397.0) internal successors, (3573), 9 states have internal predecessors, (3573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:07,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:57:07,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 393 of 1095 [2023-08-24 13:57:07,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:57:48,726 INFO L124 PetriNetUnfolderBase]: 49885/89322 cut-off events. [2023-08-24 13:57:48,726 INFO L125 PetriNetUnfolderBase]: For 2146010/2146010 co-relation queries the response was YES. [2023-08-24 13:57:51,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 714572 conditions, 89322 events. 49885/89322 cut-off events. For 2146010/2146010 co-relation queries the response was YES. Maximal size of possible extension queue 5608. Compared 934824 event pairs, 14504 based on Foata normal form. 2/89323 useless extension candidates. Maximal degree in co-relation 714436. Up to 35719 conditions per place. [2023-08-24 13:57:51,428 INFO L140 encePairwiseOnDemand]: 1085/1095 looper letters, 2285 selfloop transitions, 274 changer transitions 14/2573 dead transitions. [2023-08-24 13:57:51,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 2573 transitions, 56078 flow [2023-08-24 13:57:51,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-24 13:57:51,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-24 13:57:51,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 6155 transitions. [2023-08-24 13:57:51,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37473363774733637 [2023-08-24 13:57:51,432 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 6155 transitions. [2023-08-24 13:57:51,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 6155 transitions. [2023-08-24 13:57:51,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:57:51,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 6155 transitions. [2023-08-24 13:57:51,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 410.3333333333333) internal successors, (6155), 15 states have internal predecessors, (6155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:51,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 1095.0) internal successors, (17520), 16 states have internal predecessors, (17520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:51,445 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 1095.0) internal successors, (17520), 16 states have internal predecessors, (17520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:51,445 INFO L175 Difference]: Start difference. First operand has 296 places, 1695 transitions, 34618 flow. Second operand 15 states and 6155 transitions. [2023-08-24 13:57:51,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 2573 transitions, 56078 flow [2023-08-24 13:59:52,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 2573 transitions, 55029 flow, removed 14 selfloop flow, removed 4 redundant places. [2023-08-24 13:59:52,534 INFO L231 Difference]: Finished difference. Result has 319 places, 1810 transitions, 37315 flow [2023-08-24 13:59:52,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=33899, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1695, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=37315, PETRI_PLACES=319, PETRI_TRANSITIONS=1810} [2023-08-24 13:59:52,535 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 277 predicate places. [2023-08-24 13:59:52,535 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 1810 transitions, 37315 flow [2023-08-24 13:59:52,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 397.0) internal successors, (3573), 9 states have internal predecessors, (3573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:59:52,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:59:52,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:59:52,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-24 13:59:52,536 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 13:59:52,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:59:52,536 INFO L85 PathProgramCache]: Analyzing trace with hash -403742055, now seen corresponding path program 1 times [2023-08-24 13:59:52,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:59:52,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933341944] [2023-08-24 13:59:52,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:59:52,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:59:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:59:53,401 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 13:59:53,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:59:53,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933341944] [2023-08-24 13:59:53,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933341944] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:59:53,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:59:53,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-24 13:59:53,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927710372] [2023-08-24 13:59:53,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:59:53,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-24 13:59:53,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:59:53,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-24 13:59:53,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-08-24 13:59:53,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 381 out of 1095 [2023-08-24 13:59:53,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 1810 transitions, 37315 flow. Second operand has 11 states, 11 states have (on average 384.27272727272725) internal successors, (4227), 11 states have internal predecessors, (4227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:59:53,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:59:53,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 381 of 1095 [2023-08-24 13:59:53,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:00:43,593 INFO L124 PetriNetUnfolderBase]: 53696/99842 cut-off events. [2023-08-24 14:00:43,593 INFO L125 PetriNetUnfolderBase]: For 2326374/2326374 co-relation queries the response was YES. [2023-08-24 14:00:46,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 785032 conditions, 99842 events. 53696/99842 cut-off events. For 2326374/2326374 co-relation queries the response was YES. Maximal size of possible extension queue 6247. Compared 1104877 event pairs, 16162 based on Foata normal form. 123/99964 useless extension candidates. Maximal degree in co-relation 784885. Up to 45516 conditions per place. [2023-08-24 14:00:46,709 INFO L140 encePairwiseOnDemand]: 1087/1095 looper letters, 2349 selfloop transitions, 399 changer transitions 113/2861 dead transitions. [2023-08-24 14:00:46,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 2861 transitions, 65181 flow [2023-08-24 14:00:46,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 14:00:46,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 14:00:46,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 3151 transitions. [2023-08-24 14:00:46,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35970319634703196 [2023-08-24 14:00:46,712 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 3151 transitions. [2023-08-24 14:00:46,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 3151 transitions. [2023-08-24 14:00:46,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:00:46,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 3151 transitions. [2023-08-24 14:00:46,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 393.875) internal successors, (3151), 8 states have internal predecessors, (3151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:00:46,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 1095.0) internal successors, (9855), 9 states have internal predecessors, (9855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:00:46,718 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 1095.0) internal successors, (9855), 9 states have internal predecessors, (9855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:00:46,719 INFO L175 Difference]: Start difference. First operand has 319 places, 1810 transitions, 37315 flow. Second operand 8 states and 3151 transitions. [2023-08-24 14:00:46,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 2861 transitions, 65181 flow Received shutdown request... [2023-08-24 14:02:31,897 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 [2023-08-24 14:02:32,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-08-24 14:02:33,548 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 14:02:33,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-24 14:02:33,548 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-08-24 14:02:33,549 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-24 14:02:33,549 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 14:02:33,549 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 14:02:33,550 INFO L445 BasicCegarLoop]: Path program histogram: [9, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 14:02:33,552 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 14:02:33,552 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 14:02:33,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 02:02:33 BasicIcfg [2023-08-24 14:02:33,553 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 14:02:33,554 INFO L158 Benchmark]: Toolchain (without parser) took 821111.92ms. Allocated memory was 362.8MB in the beginning and 13.2GB in the end (delta: 12.8GB). Free memory was 339.5MB in the beginning and 10.4GB in the end (delta: -10.1GB). Peak memory consumption was 8.6GB. Max. memory is 16.0GB. [2023-08-24 14:02:33,554 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 362.8MB. Free memory is still 339.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 14:02:33,554 INFO L158 Benchmark]: CACSL2BoogieTranslator took 216.55ms. Allocated memory is still 362.8MB. Free memory was 339.5MB in the beginning and 326.3MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 14:02:33,554 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.51ms. Allocated memory is still 362.8MB. Free memory was 326.3MB in the beginning and 323.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 14:02:33,554 INFO L158 Benchmark]: Boogie Preprocessor took 27.76ms. Allocated memory is still 362.8MB. Free memory was 323.2MB in the beginning and 320.6MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-24 14:02:33,554 INFO L158 Benchmark]: RCFGBuilder took 680.96ms. Allocated memory is still 362.8MB. Free memory was 320.1MB in the beginning and 286.5MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.0GB. [2023-08-24 14:02:33,555 INFO L158 Benchmark]: TraceAbstraction took 820148.57ms. Allocated memory was 362.8MB in the beginning and 13.2GB in the end (delta: 12.8GB). Free memory was 285.5MB in the beginning and 10.4GB in the end (delta: -10.1GB). Peak memory consumption was 8.6GB. Max. memory is 16.0GB. [2023-08-24 14:02:33,555 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 362.8MB. Free memory is still 339.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 216.55ms. Allocated memory is still 362.8MB. Free memory was 339.5MB in the beginning and 326.3MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 33.51ms. Allocated memory is still 362.8MB. Free memory was 326.3MB in the beginning and 323.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.76ms. Allocated memory is still 362.8MB. Free memory was 323.2MB in the beginning and 320.6MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * RCFGBuilder took 680.96ms. Allocated memory is still 362.8MB. Free memory was 320.1MB in the beginning and 286.5MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.0GB. * TraceAbstraction took 820148.57ms. Allocated memory was 362.8MB in the beginning and 13.2GB in the end (delta: 12.8GB). Free memory was 285.5MB in the beginning and 10.4GB in the end (delta: -10.1GB). Peak memory consumption was 8.6GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 14.0s, 463 PlacesBefore, 42 PlacesAfterwards, 494 TransitionsBefore, 42 TransitionsAfterwards, 17280 CoEnabledTransitionPairs, 8 FixpointIterations, 292 TrivialSequentialCompositions, 137 ConcurrentSequentialCompositions, 80 TrivialYvCompositions, 48 ConcurrentYvCompositions, 31 ChoiceCompositions, 588 TotalNumberOfCompositions, 20163 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 17954, independent: 17776, independent conditional: 0, independent unconditional: 17776, dependent: 178, dependent conditional: 0, dependent unconditional: 178, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 10455, independent: 10408, independent conditional: 0, independent unconditional: 10408, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 17954, independent: 7368, independent conditional: 0, independent unconditional: 7368, dependent: 131, dependent conditional: 0, dependent unconditional: 131, unknown: 10455, unknown conditional: 0, unknown unconditional: 10455] , Statistics on independence cache: Total cache size (in pairs): 155, Positive cache size: 140, Positive conditional cache size: 0, Positive unconditional cache size: 140, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 605 locations, 4 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: 820.0s, OverallIterations: 22, TraceHistogramMax: 1, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 789.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 14.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2925 SdHoareTripleChecker+Valid, 8.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2925 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 6.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 98 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12592 IncrementalHoareTripleChecker+Invalid, 12690 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 98 mSolverCounterUnsat, 0 mSDtfsCounter, 12592 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 356 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 294 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1093 ImplicationChecksByTransitivity, 11.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37315occurred in iteration=21, InterpolantAutomatonStates: 224, 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: 0.1s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 14.3s InterpolantComputationTime, 790 NumberOfCodeBlocks, 790 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 767 ConstructedInterpolants, 0 QuantifiedInterpolants, 12286 SizeOfPredicates, 2 NumberOfNonLiveVariables, 463 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 23 InterpolantComputations, 22 PerfectInterpolantSequences, 102/103 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