/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.fix-rcfgbuilder-lbe-0ccecc1-m [2023-11-10 11:44:50,324 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-10 11:44:50,371 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-10 11:44:50,393 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-10 11:44:50,393 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-10 11:44:50,394 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-10 11:44:50,394 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-10 11:44:50,395 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-10 11:44:50,395 INFO L153 SettingsManager]: * Use SBE=true [2023-11-10 11:44:50,395 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-10 11:44:50,396 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-10 11:44:50,396 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-10 11:44:50,396 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-10 11:44:50,397 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-10 11:44:50,397 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-10 11:44:50,397 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-10 11:44:50,398 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-10 11:44:50,398 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-10 11:44:50,398 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-10 11:44:50,399 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-10 11:44:50,399 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-10 11:44:50,408 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-10 11:44:50,409 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-10 11:44:50,409 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-10 11:44:50,409 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-10 11:44:50,410 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 11:44:50,410 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-10 11:44:50,410 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-10 11:44:50,411 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-10 11:44:50,411 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-10 11:44:50,411 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-10 11:44:50,411 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-10 11:44:50,412 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-10 11:44:50,412 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-10 11:44:50,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-10 11:44:50,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-10 11:44:50,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-10 11:44:50,634 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-10 11:44:50,634 INFO L274 PluginConnector]: CDTParser initialized [2023-11-10 11:44:50,635 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2023-11-10 11:44:51,857 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-10 11:44:52,090 INFO L384 CDTParser]: Found 1 translation units. [2023-11-10 11:44:52,090 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2023-11-10 11:44:52,104 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50d06bb27/6a5a65f867b64dbcb6c283454ac799f3/FLAGc444ece14 [2023-11-10 11:44:52,116 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50d06bb27/6a5a65f867b64dbcb6c283454ac799f3 [2023-11-10 11:44:52,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-10 11:44:52,119 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-10 11:44:52,120 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-10 11:44:52,120 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-10 11:44:52,126 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-10 11:44:52,128 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:44:52" (1/1) ... [2023-11-10 11:44:52,129 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b269cbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:44:52, skipping insertion in model container [2023-11-10 11:44:52,129 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:44:52" (1/1) ... [2023-11-10 11:44:52,188 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-10 11:44:52,324 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2023-11-10 11:44:52,542 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 11:44:52,553 INFO L202 MainTranslator]: Completed pre-run [2023-11-10 11:44:52,563 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2023-11-10 11:44:52,624 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 11:44:52,671 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-10 11:44:52,671 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-10 11:44:52,678 INFO L206 MainTranslator]: Completed translation [2023-11-10 11:44:52,680 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:44:52 WrapperNode [2023-11-10 11:44:52,680 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-10 11:44:52,682 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-10 11:44:52,682 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-10 11:44:52,682 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-10 11:44:52,688 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:44:52" (1/1) ... [2023-11-10 11:44:52,721 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:44:52" (1/1) ... [2023-11-10 11:44:52,744 INFO L138 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 158 [2023-11-10 11:44:52,744 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-10 11:44:52,745 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-10 11:44:52,745 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-10 11:44:52,745 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-10 11:44:52,758 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:44:52" (1/1) ... [2023-11-10 11:44:52,758 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:44:52" (1/1) ... [2023-11-10 11:44:52,774 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:44:52" (1/1) ... [2023-11-10 11:44:52,775 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:44:52" (1/1) ... [2023-11-10 11:44:52,781 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:44:52" (1/1) ... [2023-11-10 11:44:52,783 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:44:52" (1/1) ... [2023-11-10 11:44:52,785 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:44:52" (1/1) ... [2023-11-10 11:44:52,786 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:44:52" (1/1) ... [2023-11-10 11:44:52,807 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-10 11:44:52,808 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-10 11:44:52,808 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-10 11:44:52,809 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-10 11:44:52,809 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:44:52" (1/1) ... [2023-11-10 11:44:52,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 11:44:52,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 11:44:52,840 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-10 11:44:52,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-10 11:44:52,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-10 11:44:52,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-10 11:44:52,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-10 11:44:52,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-10 11:44:52,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-10 11:44:52,874 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-10 11:44:52,874 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-10 11:44:52,875 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-10 11:44:52,875 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-10 11:44:52,875 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-10 11:44:52,875 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-10 11:44:52,875 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-10 11:44:52,875 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-10 11:44:52,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-10 11:44:52,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-10 11:44:52,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-10 11:44:52,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-10 11:44:52,878 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-10 11:44:53,000 INFO L236 CfgBuilder]: Building ICFG [2023-11-10 11:44:53,002 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-10 11:44:53,272 INFO L277 CfgBuilder]: Performing block encoding [2023-11-10 11:44:53,398 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-10 11:44:53,398 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-10 11:44:53,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:44:53 BoogieIcfgContainer [2023-11-10 11:44:53,401 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-10 11:44:53,403 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-10 11:44:53,403 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-10 11:44:53,406 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-10 11:44:53,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 11:44:52" (1/3) ... [2023-11-10 11:44:53,406 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35be32ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:44:53, skipping insertion in model container [2023-11-10 11:44:53,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:44:52" (2/3) ... [2023-11-10 11:44:53,407 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35be32ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:44:53, skipping insertion in model container [2023-11-10 11:44:53,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:44:53" (3/3) ... [2023-11-10 11:44:53,408 INFO L112 eAbstractionObserver]: Analyzing ICFG mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2023-11-10 11:44:53,423 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-10 11:44:53,424 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-10 11:44:53,424 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-10 11:44:53,487 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-10 11:44:53,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 130 transitions, 276 flow [2023-11-10 11:44:53,570 INFO L124 PetriNetUnfolderBase]: 2/126 cut-off events. [2023-11-10 11:44:53,570 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-10 11:44:53,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 126 events. 2/126 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 67 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-11-10 11:44:53,577 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 130 transitions, 276 flow [2023-11-10 11:44:53,581 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 126 transitions, 264 flow [2023-11-10 11:44:53,589 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 11:44:53,594 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@50fab56b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 11:44:53,594 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-10 11:44:53,613 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 11:44:53,613 INFO L124 PetriNetUnfolderBase]: 0/86 cut-off events. [2023-11-10 11:44:53,613 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-10 11:44:53,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:44:53,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:44:53,614 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-10 11:44:53,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:44:53,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1549910694, now seen corresponding path program 1 times [2023-11-10 11:44:53,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:44:53,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797512800] [2023-11-10 11:44:53,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:44:53,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:44:53,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:44:54,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:44:54,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:44:54,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797512800] [2023-11-10 11:44:54,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797512800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:44:54,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:44:54,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-10 11:44:54,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188734034] [2023-11-10 11:44:54,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:44:54,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-10 11:44:54,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:44:54,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-10 11:44:54,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-10 11:44:54,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 130 [2023-11-10 11:44:54,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 126 transitions, 264 flow. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:44:54,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:44:54,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 130 [2023-11-10 11:44:54,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:44:54,384 INFO L124 PetriNetUnfolderBase]: 17/198 cut-off events. [2023-11-10 11:44:54,384 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-10 11:44:54,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 198 events. 17/198 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 423 event pairs, 3 based on Foata normal form. 7/197 useless extension candidates. Maximal degree in co-relation 203. Up to 27 conditions per place. [2023-11-10 11:44:54,390 INFO L140 encePairwiseOnDemand]: 125/130 looper letters, 11 selfloop transitions, 2 changer transitions 0/125 dead transitions. [2023-11-10 11:44:54,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 125 transitions, 288 flow [2023-11-10 11:44:54,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-10 11:44:54,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-10 11:44:54,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 366 transitions. [2023-11-10 11:44:54,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9384615384615385 [2023-11-10 11:44:54,409 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 366 transitions. [2023-11-10 11:44:54,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 366 transitions. [2023-11-10 11:44:54,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:44:54,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 366 transitions. [2023-11-10 11:44:54,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:44:54,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:44:54,442 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:44:54,443 INFO L175 Difference]: Start difference. First operand has 137 places, 126 transitions, 264 flow. Second operand 3 states and 366 transitions. [2023-11-10 11:44:54,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 125 transitions, 288 flow [2023-11-10 11:44:54,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 125 transitions, 284 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-10 11:44:54,450 INFO L231 Difference]: Finished difference. Result has 133 places, 122 transitions, 256 flow [2023-11-10 11:44:54,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=133, PETRI_TRANSITIONS=122} [2023-11-10 11:44:54,454 INFO L281 CegarLoopForPetriNet]: 137 programPoint places, -4 predicate places. [2023-11-10 11:44:54,455 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 122 transitions, 256 flow [2023-11-10 11:44:54,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:44:54,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:44:54,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:44:54,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-10 11:44:54,456 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-10 11:44:54,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:44:54,457 INFO L85 PathProgramCache]: Analyzing trace with hash 40160480, now seen corresponding path program 1 times [2023-11-10 11:44:54,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:44:54,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769764485] [2023-11-10 11:44:54,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:44:54,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:44:54,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:44:55,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:44:55,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:44:55,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769764485] [2023-11-10 11:44:55,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769764485] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:44:55,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:44:55,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 11:44:55,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003714361] [2023-11-10 11:44:55,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:44:55,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 11:44:55,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:44:55,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 11:44:55,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-10 11:44:55,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 130 [2023-11-10 11:44:55,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 122 transitions, 256 flow. Second operand has 7 states, 7 states have (on average 96.0) internal successors, (672), 7 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:44:55,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:44:55,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 130 [2023-11-10 11:44:55,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:44:57,802 INFO L124 PetriNetUnfolderBase]: 5672/12925 cut-off events. [2023-11-10 11:44:57,802 INFO L125 PetriNetUnfolderBase]: For 590/590 co-relation queries the response was YES. [2023-11-10 11:44:57,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21744 conditions, 12925 events. 5672/12925 cut-off events. For 590/590 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 123568 event pairs, 1080 based on Foata normal form. 0/12622 useless extension candidates. Maximal degree in co-relation 21685. Up to 2978 conditions per place. [2023-11-10 11:44:57,887 INFO L140 encePairwiseOnDemand]: 113/130 looper letters, 42 selfloop transitions, 13 changer transitions 113/245 dead transitions. [2023-11-10 11:44:57,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 245 transitions, 842 flow [2023-11-10 11:44:57,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-10 11:44:57,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-10 11:44:57,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1368 transitions. [2023-11-10 11:44:57,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8094674556213017 [2023-11-10 11:44:57,893 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1368 transitions. [2023-11-10 11:44:57,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1368 transitions. [2023-11-10 11:44:57,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:44:57,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1368 transitions. [2023-11-10 11:44:57,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 105.23076923076923) internal successors, (1368), 13 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:44:57,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 130.0) internal successors, (1820), 14 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:44:57,906 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 130.0) internal successors, (1820), 14 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:44:57,906 INFO L175 Difference]: Start difference. First operand has 133 places, 122 transitions, 256 flow. Second operand 13 states and 1368 transitions. [2023-11-10 11:44:57,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 245 transitions, 842 flow [2023-11-10 11:44:57,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 245 transitions, 816 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-10 11:44:57,916 INFO L231 Difference]: Finished difference. Result has 155 places, 118 transitions, 372 flow [2023-11-10 11:44:57,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=372, PETRI_PLACES=155, PETRI_TRANSITIONS=118} [2023-11-10 11:44:57,917 INFO L281 CegarLoopForPetriNet]: 137 programPoint places, 18 predicate places. [2023-11-10 11:44:57,917 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 118 transitions, 372 flow [2023-11-10 11:44:57,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 96.0) internal successors, (672), 7 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:44:57,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:44:57,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:44:57,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-10 11:44:57,919 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-10 11:44:57,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:44:57,920 INFO L85 PathProgramCache]: Analyzing trace with hash -195483329, now seen corresponding path program 1 times [2023-11-10 11:44:57,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:44:57,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037656316] [2023-11-10 11:44:57,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:44:57,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:44:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:44:58,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:44:58,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:44:58,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037656316] [2023-11-10 11:44:58,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037656316] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:44:58,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:44:58,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 11:44:58,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475855959] [2023-11-10 11:44:58,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:44:58,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 11:44:58,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:44:58,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 11:44:58,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-10 11:44:58,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 130 [2023-11-10 11:44:58,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 118 transitions, 372 flow. Second operand has 7 states, 7 states have (on average 96.14285714285714) internal successors, (673), 7 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:44:58,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:44:58,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 130 [2023-11-10 11:44:58,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:44:59,925 INFO L124 PetriNetUnfolderBase]: 2886/6619 cut-off events. [2023-11-10 11:44:59,925 INFO L125 PetriNetUnfolderBase]: For 11872/21238 co-relation queries the response was YES. [2023-11-10 11:44:59,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20871 conditions, 6619 events. 2886/6619 cut-off events. For 11872/21238 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 58916 event pairs, 196 based on Foata normal form. 116/6610 useless extension candidates. Maximal degree in co-relation 20798. Up to 1957 conditions per place. [2023-11-10 11:44:59,987 INFO L140 encePairwiseOnDemand]: 116/130 looper letters, 48 selfloop transitions, 21 changer transitions 79/225 dead transitions. [2023-11-10 11:44:59,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 225 transitions, 1424 flow [2023-11-10 11:44:59,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-10 11:44:59,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-10 11:44:59,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1349 transitions. [2023-11-10 11:44:59,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7982248520710059 [2023-11-10 11:44:59,992 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1349 transitions. [2023-11-10 11:44:59,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1349 transitions. [2023-11-10 11:44:59,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:44:59,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1349 transitions. [2023-11-10 11:44:59,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 103.76923076923077) internal successors, (1349), 13 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) [2023-11-10 11:45:00,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 130.0) internal successors, (1820), 14 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:00,000 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 130.0) internal successors, (1820), 14 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:00,001 INFO L175 Difference]: Start difference. First operand has 155 places, 118 transitions, 372 flow. Second operand 13 states and 1349 transitions. [2023-11-10 11:45:00,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 225 transitions, 1424 flow [2023-11-10 11:45:00,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 225 transitions, 1400 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-11-10 11:45:00,023 INFO L231 Difference]: Finished difference. Result has 152 places, 129 transitions, 578 flow [2023-11-10 11:45:00,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=578, PETRI_PLACES=152, PETRI_TRANSITIONS=129} [2023-11-10 11:45:00,024 INFO L281 CegarLoopForPetriNet]: 137 programPoint places, 15 predicate places. [2023-11-10 11:45:00,025 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 129 transitions, 578 flow [2023-11-10 11:45:00,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 96.14285714285714) internal successors, (673), 7 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:00,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:45:00,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:45:00,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-10 11:45:00,026 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-10 11:45:00,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:45:00,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1226339778, now seen corresponding path program 1 times [2023-11-10 11:45:00,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:45:00,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748690608] [2023-11-10 11:45:00,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:45:00,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:45:00,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:45:00,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:45:00,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:45:00,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748690608] [2023-11-10 11:45:00,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748690608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:45:00,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:45:00,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 11:45:00,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471311511] [2023-11-10 11:45:00,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:45:00,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 11:45:00,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:45:00,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 11:45:00,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-10 11:45:00,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 130 [2023-11-10 11:45:00,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 129 transitions, 578 flow. Second operand has 7 states, 7 states have (on average 96.28571428571429) internal successors, (674), 7 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:00,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:45:00,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 130 [2023-11-10 11:45:00,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:45:02,256 INFO L124 PetriNetUnfolderBase]: 2639/6488 cut-off events. [2023-11-10 11:45:02,257 INFO L125 PetriNetUnfolderBase]: For 22779/47648 co-relation queries the response was YES. [2023-11-10 11:45:02,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24925 conditions, 6488 events. 2639/6488 cut-off events. For 22779/47648 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 60116 event pairs, 660 based on Foata normal form. 88/6443 useless extension candidates. Maximal degree in co-relation 24841. Up to 1918 conditions per place. [2023-11-10 11:45:02,325 INFO L140 encePairwiseOnDemand]: 115/130 looper letters, 54 selfloop transitions, 24 changer transitions 79/234 dead transitions. [2023-11-10 11:45:02,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 234 transitions, 1826 flow [2023-11-10 11:45:02,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-10 11:45:02,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-10 11:45:02,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1336 transitions. [2023-11-10 11:45:02,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7905325443786982 [2023-11-10 11:45:02,330 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1336 transitions. [2023-11-10 11:45:02,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1336 transitions. [2023-11-10 11:45:02,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:45:02,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1336 transitions. [2023-11-10 11:45:02,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 102.76923076923077) internal successors, (1336), 13 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:02,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 130.0) internal successors, (1820), 14 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:02,339 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 130.0) internal successors, (1820), 14 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:02,339 INFO L175 Difference]: Start difference. First operand has 152 places, 129 transitions, 578 flow. Second operand 13 states and 1336 transitions. [2023-11-10 11:45:02,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 234 transitions, 1826 flow [2023-11-10 11:45:02,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 234 transitions, 1728 flow, removed 49 selfloop flow, removed 9 redundant places. [2023-11-10 11:45:02,379 INFO L231 Difference]: Finished difference. Result has 158 places, 135 transitions, 770 flow [2023-11-10 11:45:02,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=770, PETRI_PLACES=158, PETRI_TRANSITIONS=135} [2023-11-10 11:45:02,381 INFO L281 CegarLoopForPetriNet]: 137 programPoint places, 21 predicate places. [2023-11-10 11:45:02,381 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 135 transitions, 770 flow [2023-11-10 11:45:02,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 96.28571428571429) internal successors, (674), 7 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:02,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:45:02,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:45:02,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-10 11:45:02,382 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-10 11:45:02,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:45:02,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1402229442, now seen corresponding path program 1 times [2023-11-10 11:45:02,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:45:02,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370842931] [2023-11-10 11:45:02,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:45:02,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:45:02,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:45:03,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:45:03,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:45:03,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370842931] [2023-11-10 11:45:03,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370842931] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:45:03,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:45:03,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-10 11:45:03,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623953741] [2023-11-10 11:45:03,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:45:03,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-10 11:45:03,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:45:03,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-10 11:45:03,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-10 11:45:03,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 130 [2023-11-10 11:45:03,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 135 transitions, 770 flow. Second operand has 9 states, 9 states have (on average 96.44444444444444) internal successors, (868), 9 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:03,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:45:03,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 130 [2023-11-10 11:45:03,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:45:04,999 INFO L124 PetriNetUnfolderBase]: 3508/7717 cut-off events. [2023-11-10 11:45:05,000 INFO L125 PetriNetUnfolderBase]: For 46513/81145 co-relation queries the response was YES. [2023-11-10 11:45:05,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36543 conditions, 7717 events. 3508/7717 cut-off events. For 46513/81145 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 68712 event pairs, 357 based on Foata normal form. 164/7733 useless extension candidates. Maximal degree in co-relation 36453. Up to 2828 conditions per place. [2023-11-10 11:45:05,200 INFO L140 encePairwiseOnDemand]: 112/130 looper letters, 91 selfloop transitions, 49 changer transitions 227/445 dead transitions. [2023-11-10 11:45:05,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 445 transitions, 5394 flow [2023-11-10 11:45:05,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-10 11:45:05,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-10 11:45:05,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2253 transitions. [2023-11-10 11:45:05,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7877622377622377 [2023-11-10 11:45:05,207 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2253 transitions. [2023-11-10 11:45:05,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2253 transitions. [2023-11-10 11:45:05,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:45:05,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2253 transitions. [2023-11-10 11:45:05,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 102.4090909090909) internal successors, (2253), 22 states have internal predecessors, (2253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:05,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 130.0) internal successors, (2990), 23 states have internal predecessors, (2990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:05,223 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 130.0) internal successors, (2990), 23 states have internal predecessors, (2990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:05,224 INFO L175 Difference]: Start difference. First operand has 158 places, 135 transitions, 770 flow. Second operand 22 states and 2253 transitions. [2023-11-10 11:45:05,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 445 transitions, 5394 flow [2023-11-10 11:45:05,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 445 transitions, 5174 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-11-10 11:45:05,281 INFO L231 Difference]: Finished difference. Result has 185 places, 180 transitions, 1671 flow [2023-11-10 11:45:05,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1671, PETRI_PLACES=185, PETRI_TRANSITIONS=180} [2023-11-10 11:45:05,284 INFO L281 CegarLoopForPetriNet]: 137 programPoint places, 48 predicate places. [2023-11-10 11:45:05,284 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 180 transitions, 1671 flow [2023-11-10 11:45:05,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 96.44444444444444) internal successors, (868), 9 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:05,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:45:05,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:45:05,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-10 11:45:05,285 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-10 11:45:05,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:45:05,287 INFO L85 PathProgramCache]: Analyzing trace with hash 929099326, now seen corresponding path program 1 times [2023-11-10 11:45:05,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:45:05,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618775704] [2023-11-10 11:45:05,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:45:05,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:45:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:45:05,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:45:05,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:45:05,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618775704] [2023-11-10 11:45:05,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618775704] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:45:05,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:45:05,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-10 11:45:05,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592863988] [2023-11-10 11:45:05,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:45:05,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-10 11:45:05,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:45:05,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-10 11:45:05,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-10 11:45:05,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 130 [2023-11-10 11:45:05,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 180 transitions, 1671 flow. Second operand has 9 states, 9 states have (on average 106.66666666666667) internal successors, (960), 9 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:05,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:45:05,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 130 [2023-11-10 11:45:05,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:45:07,147 INFO L124 PetriNetUnfolderBase]: 2201/5308 cut-off events. [2023-11-10 11:45:07,148 INFO L125 PetriNetUnfolderBase]: For 93235/116105 co-relation queries the response was YES. [2023-11-10 11:45:07,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35302 conditions, 5308 events. 2201/5308 cut-off events. For 93235/116105 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 46585 event pairs, 398 based on Foata normal form. 143/5276 useless extension candidates. Maximal degree in co-relation 35196. Up to 1874 conditions per place. [2023-11-10 11:45:07,215 INFO L140 encePairwiseOnDemand]: 122/130 looper letters, 54 selfloop transitions, 9 changer transitions 45/237 dead transitions. [2023-11-10 11:45:07,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 237 transitions, 2982 flow [2023-11-10 11:45:07,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-10 11:45:07,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-10 11:45:07,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1200 transitions. [2023-11-10 11:45:07,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8391608391608392 [2023-11-10 11:45:07,219 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1200 transitions. [2023-11-10 11:45:07,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1200 transitions. [2023-11-10 11:45:07,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:45:07,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1200 transitions. [2023-11-10 11:45:07,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 109.0909090909091) internal successors, (1200), 11 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:07,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:07,226 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:07,226 INFO L175 Difference]: Start difference. First operand has 185 places, 180 transitions, 1671 flow. Second operand 11 states and 1200 transitions. [2023-11-10 11:45:07,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 237 transitions, 2982 flow [2023-11-10 11:45:07,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 237 transitions, 2820 flow, removed 80 selfloop flow, removed 7 redundant places. [2023-11-10 11:45:07,338 INFO L231 Difference]: Finished difference. Result has 180 places, 179 transitions, 1573 flow [2023-11-10 11:45:07,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=1561, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1573, PETRI_PLACES=180, PETRI_TRANSITIONS=179} [2023-11-10 11:45:07,341 INFO L281 CegarLoopForPetriNet]: 137 programPoint places, 43 predicate places. [2023-11-10 11:45:07,342 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 179 transitions, 1573 flow [2023-11-10 11:45:07,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 106.66666666666667) internal successors, (960), 9 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:07,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:45:07,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:45:07,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-10 11:45:07,343 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-10 11:45:07,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:45:07,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1448791068, now seen corresponding path program 1 times [2023-11-10 11:45:07,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:45:07,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471473414] [2023-11-10 11:45:07,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:45:07,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:45:07,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:45:08,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:45:08,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:45:08,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471473414] [2023-11-10 11:45:08,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471473414] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:45:08,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:45:08,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-10 11:45:08,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971098556] [2023-11-10 11:45:08,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:45:08,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-10 11:45:08,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:45:08,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-10 11:45:08,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-10 11:45:08,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 130 [2023-11-10 11:45:08,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 179 transitions, 1573 flow. Second operand has 11 states, 11 states have (on average 95.18181818181819) internal successors, (1047), 11 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:08,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:45:08,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 130 [2023-11-10 11:45:08,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:45:10,200 INFO L124 PetriNetUnfolderBase]: 2981/6933 cut-off events. [2023-11-10 11:45:10,201 INFO L125 PetriNetUnfolderBase]: For 101827/191584 co-relation queries the response was YES. [2023-11-10 11:45:10,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44039 conditions, 6933 events. 2981/6933 cut-off events. For 101827/191584 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 61750 event pairs, 201 based on Foata normal form. 155/6936 useless extension candidates. Maximal degree in co-relation 43923. Up to 2238 conditions per place. [2023-11-10 11:45:10,285 INFO L140 encePairwiseOnDemand]: 110/130 looper letters, 130 selfloop transitions, 96 changer transitions 176/479 dead transitions. [2023-11-10 11:45:10,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 479 transitions, 7565 flow [2023-11-10 11:45:10,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-10 11:45:10,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-10 11:45:10,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2215 transitions. [2023-11-10 11:45:10,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7744755244755245 [2023-11-10 11:45:10,291 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2215 transitions. [2023-11-10 11:45:10,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2215 transitions. [2023-11-10 11:45:10,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:45:10,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2215 transitions. [2023-11-10 11:45:10,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 100.68181818181819) internal successors, (2215), 22 states have internal predecessors, (2215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:10,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 130.0) internal successors, (2990), 23 states have internal predecessors, (2990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:10,383 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 130.0) internal successors, (2990), 23 states have internal predecessors, (2990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:10,383 INFO L175 Difference]: Start difference. First operand has 180 places, 179 transitions, 1573 flow. Second operand 22 states and 2215 transitions. [2023-11-10 11:45:10,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 479 transitions, 7565 flow [2023-11-10 11:45:10,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 479 transitions, 7105 flow, removed 217 selfloop flow, removed 18 redundant places. [2023-11-10 11:45:10,584 INFO L231 Difference]: Finished difference. Result has 194 places, 249 transitions, 3119 flow [2023-11-10 11:45:10,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=1492, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3119, PETRI_PLACES=194, PETRI_TRANSITIONS=249} [2023-11-10 11:45:10,585 INFO L281 CegarLoopForPetriNet]: 137 programPoint places, 57 predicate places. [2023-11-10 11:45:10,586 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 249 transitions, 3119 flow [2023-11-10 11:45:10,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 95.18181818181819) internal successors, (1047), 11 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:10,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:45:10,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:45:10,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-10 11:45:10,587 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-10 11:45:10,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:45:10,587 INFO L85 PathProgramCache]: Analyzing trace with hash 756155778, now seen corresponding path program 2 times [2023-11-10 11:45:10,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:45:10,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202897734] [2023-11-10 11:45:10,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:45:10,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:45:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:45:11,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:45:11,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:45:11,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202897734] [2023-11-10 11:45:11,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202897734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:45:11,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:45:11,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-10 11:45:11,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203476952] [2023-11-10 11:45:11,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:45:11,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-10 11:45:11,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:45:11,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-10 11:45:11,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-10 11:45:11,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 130 [2023-11-10 11:45:11,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 249 transitions, 3119 flow. Second operand has 11 states, 11 states have (on average 96.0909090909091) internal successors, (1057), 11 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:11,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:45:11,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 130 [2023-11-10 11:45:11,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:45:12,831 INFO L124 PetriNetUnfolderBase]: 2594/5877 cut-off events. [2023-11-10 11:45:12,832 INFO L125 PetriNetUnfolderBase]: For 116265/222979 co-relation queries the response was YES. [2023-11-10 11:45:12,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43995 conditions, 5877 events. 2594/5877 cut-off events. For 116265/222979 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 50221 event pairs, 288 based on Foata normal form. 163/5897 useless extension candidates. Maximal degree in co-relation 43873. Up to 2117 conditions per place. [2023-11-10 11:45:12,899 INFO L140 encePairwiseOnDemand]: 115/130 looper letters, 154 selfloop transitions, 68 changer transitions 153/453 dead transitions. [2023-11-10 11:45:12,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 453 transitions, 8030 flow [2023-11-10 11:45:12,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-10 11:45:12,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-10 11:45:12,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1723 transitions. [2023-11-10 11:45:12,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7796380090497738 [2023-11-10 11:45:12,907 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1723 transitions. [2023-11-10 11:45:12,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1723 transitions. [2023-11-10 11:45:12,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:45:12,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1723 transitions. [2023-11-10 11:45:12,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 101.3529411764706) internal successors, (1723), 17 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) [2023-11-10 11:45:12,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 130.0) internal successors, (2340), 18 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:12,919 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 130.0) internal successors, (2340), 18 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:12,919 INFO L175 Difference]: Start difference. First operand has 194 places, 249 transitions, 3119 flow. Second operand 17 states and 1723 transitions. [2023-11-10 11:45:12,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 453 transitions, 8030 flow [2023-11-10 11:45:13,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 453 transitions, 7950 flow, removed 36 selfloop flow, removed 10 redundant places. [2023-11-10 11:45:13,125 INFO L231 Difference]: Finished difference. Result has 198 places, 265 transitions, 3766 flow [2023-11-10 11:45:13,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=3087, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3766, PETRI_PLACES=198, PETRI_TRANSITIONS=265} [2023-11-10 11:45:13,127 INFO L281 CegarLoopForPetriNet]: 137 programPoint places, 61 predicate places. [2023-11-10 11:45:13,127 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 265 transitions, 3766 flow [2023-11-10 11:45:13,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 96.0909090909091) internal successors, (1057), 11 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:13,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:45:13,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:45:13,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-10 11:45:13,128 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-10 11:45:13,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:45:13,128 INFO L85 PathProgramCache]: Analyzing trace with hash -952266752, now seen corresponding path program 1 times [2023-11-10 11:45:13,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:45:13,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069376776] [2023-11-10 11:45:13,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:45:13,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:45:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:45:13,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:45:13,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:45:13,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069376776] [2023-11-10 11:45:13,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069376776] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:45:13,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:45:13,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-10 11:45:13,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570592202] [2023-11-10 11:45:13,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:45:13,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-10 11:45:13,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:45:13,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-10 11:45:13,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-10 11:45:13,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 130 [2023-11-10 11:45:13,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 265 transitions, 3766 flow. Second operand has 9 states, 9 states have (on average 98.44444444444444) internal successors, (886), 9 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:13,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:45:13,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 130 [2023-11-10 11:45:13,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:45:15,111 INFO L124 PetriNetUnfolderBase]: 2364/5625 cut-off events. [2023-11-10 11:45:15,112 INFO L125 PetriNetUnfolderBase]: For 148905/272202 co-relation queries the response was YES. [2023-11-10 11:45:15,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48262 conditions, 5625 events. 2364/5625 cut-off events. For 148905/272202 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 49336 event pairs, 319 based on Foata normal form. 102/5585 useless extension candidates. Maximal degree in co-relation 48137. Up to 2438 conditions per place. [2023-11-10 11:45:15,178 INFO L140 encePairwiseOnDemand]: 120/130 looper letters, 193 selfloop transitions, 49 changer transitions 110/432 dead transitions. [2023-11-10 11:45:15,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 432 transitions, 8822 flow [2023-11-10 11:45:15,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-10 11:45:15,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-10 11:45:15,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1149 transitions. [2023-11-10 11:45:15,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8034965034965035 [2023-11-10 11:45:15,180 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1149 transitions. [2023-11-10 11:45:15,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1149 transitions. [2023-11-10 11:45:15,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:45:15,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1149 transitions. [2023-11-10 11:45:15,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 104.45454545454545) internal successors, (1149), 11 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:15,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:15,185 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:15,185 INFO L175 Difference]: Start difference. First operand has 198 places, 265 transitions, 3766 flow. Second operand 11 states and 1149 transitions. [2023-11-10 11:45:15,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 432 transitions, 8822 flow [2023-11-10 11:45:15,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 432 transitions, 8636 flow, removed 56 selfloop flow, removed 11 redundant places. [2023-11-10 11:45:15,508 INFO L231 Difference]: Finished difference. Result has 196 places, 286 transitions, 4377 flow [2023-11-10 11:45:15,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=3615, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4377, PETRI_PLACES=196, PETRI_TRANSITIONS=286} [2023-11-10 11:45:15,509 INFO L281 CegarLoopForPetriNet]: 137 programPoint places, 59 predicate places. [2023-11-10 11:45:15,509 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 286 transitions, 4377 flow [2023-11-10 11:45:15,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 98.44444444444444) internal successors, (886), 9 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:15,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:45:15,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:45:15,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-10 11:45:15,510 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-10 11:45:15,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:45:15,510 INFO L85 PathProgramCache]: Analyzing trace with hash -2143237830, now seen corresponding path program 2 times [2023-11-10 11:45:15,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:45:15,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40616013] [2023-11-10 11:45:15,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:45:15,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:45:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:45:16,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:45:16,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:45:16,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40616013] [2023-11-10 11:45:16,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40616013] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:45:16,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:45:16,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-10 11:45:16,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886805232] [2023-11-10 11:45:16,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:45:16,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-10 11:45:16,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:45:16,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-10 11:45:16,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-10 11:45:16,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 130 [2023-11-10 11:45:16,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 286 transitions, 4377 flow. Second operand has 11 states, 11 states have (on average 105.54545454545455) internal successors, (1161), 11 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:16,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:45:16,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 130 [2023-11-10 11:45:16,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:45:17,099 INFO L124 PetriNetUnfolderBase]: 2171/5375 cut-off events. [2023-11-10 11:45:17,099 INFO L125 PetriNetUnfolderBase]: For 165702/254908 co-relation queries the response was YES. [2023-11-10 11:45:17,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47334 conditions, 5375 events. 2171/5375 cut-off events. For 165702/254908 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 48227 event pairs, 303 based on Foata normal form. 358/5586 useless extension candidates. Maximal degree in co-relation 47213. Up to 2135 conditions per place. [2023-11-10 11:45:17,168 INFO L140 encePairwiseOnDemand]: 118/130 looper letters, 68 selfloop transitions, 68 changer transitions 47/356 dead transitions. [2023-11-10 11:45:17,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 356 transitions, 6874 flow [2023-11-10 11:45:17,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-10 11:45:17,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-10 11:45:17,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1513 transitions. [2023-11-10 11:45:17,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8313186813186814 [2023-11-10 11:45:17,172 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1513 transitions. [2023-11-10 11:45:17,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1513 transitions. [2023-11-10 11:45:17,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:45:17,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1513 transitions. [2023-11-10 11:45:17,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 108.07142857142857) internal successors, (1513), 14 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:17,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 130.0) internal successors, (1950), 15 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:17,192 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 130.0) internal successors, (1950), 15 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:17,193 INFO L175 Difference]: Start difference. First operand has 196 places, 286 transitions, 4377 flow. Second operand 14 states and 1513 transitions. [2023-11-10 11:45:17,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 356 transitions, 6874 flow [2023-11-10 11:45:17,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 356 transitions, 6719 flow, removed 77 selfloop flow, removed 7 redundant places. [2023-11-10 11:45:17,441 INFO L231 Difference]: Finished difference. Result has 204 places, 298 transitions, 4923 flow [2023-11-10 11:45:17,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=4334, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4923, PETRI_PLACES=204, PETRI_TRANSITIONS=298} [2023-11-10 11:45:17,442 INFO L281 CegarLoopForPetriNet]: 137 programPoint places, 67 predicate places. [2023-11-10 11:45:17,442 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 298 transitions, 4923 flow [2023-11-10 11:45:17,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 105.54545454545455) internal successors, (1161), 11 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:17,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:45:17,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:45:17,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-10 11:45:17,444 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-10 11:45:17,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:45:17,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1577867546, now seen corresponding path program 3 times [2023-11-10 11:45:17,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:45:17,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101647301] [2023-11-10 11:45:17,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:45:17,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:45:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:45:18,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:45:18,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:45:18,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101647301] [2023-11-10 11:45:18,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101647301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:45:18,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:45:18,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-10 11:45:18,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886907442] [2023-11-10 11:45:18,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:45:18,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-10 11:45:18,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:45:18,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-10 11:45:18,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-10 11:45:18,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 130 [2023-11-10 11:45:18,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 298 transitions, 4923 flow. Second operand has 9 states, 9 states have (on average 95.77777777777777) internal successors, (862), 9 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:18,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:45:18,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 130 [2023-11-10 11:45:18,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:45:19,474 INFO L124 PetriNetUnfolderBase]: 2138/5248 cut-off events. [2023-11-10 11:45:19,474 INFO L125 PetriNetUnfolderBase]: For 159795/328288 co-relation queries the response was YES. [2023-11-10 11:45:19,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47681 conditions, 5248 events. 2138/5248 cut-off events. For 159795/328288 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 46461 event pairs, 271 based on Foata normal form. 134/5237 useless extension candidates. Maximal degree in co-relation 47549. Up to 1950 conditions per place. [2023-11-10 11:45:19,550 INFO L140 encePairwiseOnDemand]: 116/130 looper letters, 155 selfloop transitions, 126 changer transitions 111/469 dead transitions. [2023-11-10 11:45:19,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 469 transitions, 10466 flow [2023-11-10 11:45:19,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-10 11:45:19,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-10 11:45:19,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1216 transitions. [2023-11-10 11:45:19,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7794871794871795 [2023-11-10 11:45:19,553 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1216 transitions. [2023-11-10 11:45:19,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1216 transitions. [2023-11-10 11:45:19,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:45:19,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1216 transitions. [2023-11-10 11:45:19,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 101.33333333333333) internal successors, (1216), 12 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:19,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 130.0) internal successors, (1690), 13 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:19,557 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 130.0) internal successors, (1690), 13 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:19,557 INFO L175 Difference]: Start difference. First operand has 204 places, 298 transitions, 4923 flow. Second operand 12 states and 1216 transitions. [2023-11-10 11:45:19,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 469 transitions, 10466 flow [2023-11-10 11:45:19,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 469 transitions, 10112 flow, removed 166 selfloop flow, removed 10 redundant places. [2023-11-10 11:45:19,775 INFO L231 Difference]: Finished difference. Result has 208 places, 330 transitions, 6138 flow [2023-11-10 11:45:19,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=4833, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6138, PETRI_PLACES=208, PETRI_TRANSITIONS=330} [2023-11-10 11:45:19,776 INFO L281 CegarLoopForPetriNet]: 137 programPoint places, 71 predicate places. [2023-11-10 11:45:19,776 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 330 transitions, 6138 flow [2023-11-10 11:45:19,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 95.77777777777777) internal successors, (862), 9 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:19,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:45:19,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:45:19,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-10 11:45:19,777 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-10 11:45:19,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:45:19,777 INFO L85 PathProgramCache]: Analyzing trace with hash -510506739, now seen corresponding path program 1 times [2023-11-10 11:45:19,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:45:19,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627754241] [2023-11-10 11:45:19,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:45:19,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:45:19,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:45:20,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:45:20,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:45:20,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627754241] [2023-11-10 11:45:20,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627754241] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:45:20,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:45:20,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-10 11:45:20,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725023232] [2023-11-10 11:45:20,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:45:20,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-10 11:45:20,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:45:20,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-10 11:45:20,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-10 11:45:20,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 130 [2023-11-10 11:45:20,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 330 transitions, 6138 flow. Second operand has 12 states, 12 states have (on average 101.83333333333333) internal successors, (1222), 12 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:20,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:45:20,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 130 [2023-11-10 11:45:20,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:45:21,683 INFO L124 PetriNetUnfolderBase]: 1724/4615 cut-off events. [2023-11-10 11:45:21,684 INFO L125 PetriNetUnfolderBase]: For 145546/250734 co-relation queries the response was YES. [2023-11-10 11:45:21,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41643 conditions, 4615 events. 1724/4615 cut-off events. For 145546/250734 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 42117 event pairs, 278 based on Foata normal form. 160/4623 useless extension candidates. Maximal degree in co-relation 41511. Up to 1784 conditions per place. [2023-11-10 11:45:21,741 INFO L140 encePairwiseOnDemand]: 118/130 looper letters, 115 selfloop transitions, 32 changer transitions 19/356 dead transitions. [2023-11-10 11:45:21,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 356 transitions, 7258 flow [2023-11-10 11:45:21,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-10 11:45:21,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-10 11:45:21,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1345 transitions. [2023-11-10 11:45:21,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7958579881656804 [2023-11-10 11:45:21,743 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1345 transitions. [2023-11-10 11:45:21,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1345 transitions. [2023-11-10 11:45:21,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:45:21,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1345 transitions. [2023-11-10 11:45:21,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 103.46153846153847) internal successors, (1345), 13 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:21,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 130.0) internal successors, (1820), 14 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:21,747 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 130.0) internal successors, (1820), 14 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:21,747 INFO L175 Difference]: Start difference. First operand has 208 places, 330 transitions, 6138 flow. Second operand 13 states and 1345 transitions. [2023-11-10 11:45:21,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 356 transitions, 7258 flow [2023-11-10 11:45:22,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 356 transitions, 6818 flow, removed 185 selfloop flow, removed 8 redundant places. [2023-11-10 11:45:22,031 INFO L231 Difference]: Finished difference. Result has 213 places, 332 transitions, 5972 flow [2023-11-10 11:45:22,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=5786, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5972, PETRI_PLACES=213, PETRI_TRANSITIONS=332} [2023-11-10 11:45:22,031 INFO L281 CegarLoopForPetriNet]: 137 programPoint places, 76 predicate places. [2023-11-10 11:45:22,032 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 332 transitions, 5972 flow [2023-11-10 11:45:22,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 101.83333333333333) internal successors, (1222), 12 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:22,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:45:22,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:45:22,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-10 11:45:22,032 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-10 11:45:22,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:45:22,032 INFO L85 PathProgramCache]: Analyzing trace with hash -968071417, now seen corresponding path program 2 times [2023-11-10 11:45:22,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:45:22,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712496941] [2023-11-10 11:45:22,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:45:22,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:45:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:45:22,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:45:22,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:45:22,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712496941] [2023-11-10 11:45:22,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712496941] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:45:22,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:45:22,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-10 11:45:22,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107306672] [2023-11-10 11:45:22,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:45:22,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-10 11:45:22,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:45:22,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-10 11:45:22,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-11-10 11:45:22,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 130 [2023-11-10 11:45:22,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 332 transitions, 5972 flow. Second operand has 14 states, 14 states have (on average 101.57142857142857) internal successors, (1422), 14 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:22,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:45:22,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 130 [2023-11-10 11:45:22,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:45:24,078 INFO L124 PetriNetUnfolderBase]: 1786/4881 cut-off events. [2023-11-10 11:45:24,078 INFO L125 PetriNetUnfolderBase]: For 149080/198384 co-relation queries the response was YES. [2023-11-10 11:45:24,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42843 conditions, 4881 events. 1786/4881 cut-off events. For 149080/198384 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 45623 event pairs, 263 based on Foata normal form. 210/4908 useless extension candidates. Maximal degree in co-relation 42708. Up to 1889 conditions per place. [2023-11-10 11:45:24,143 INFO L140 encePairwiseOnDemand]: 117/130 looper letters, 123 selfloop transitions, 34 changer transitions 16/363 dead transitions. [2023-11-10 11:45:24,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 363 transitions, 7364 flow [2023-11-10 11:45:24,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-10 11:45:24,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-10 11:45:24,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1240 transitions. [2023-11-10 11:45:24,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7948717948717948 [2023-11-10 11:45:24,145 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1240 transitions. [2023-11-10 11:45:24,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1240 transitions. [2023-11-10 11:45:24,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:45:24,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1240 transitions. [2023-11-10 11:45:24,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 103.33333333333333) internal successors, (1240), 12 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:24,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 130.0) internal successors, (1690), 13 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:24,148 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 130.0) internal successors, (1690), 13 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:24,148 INFO L175 Difference]: Start difference. First operand has 213 places, 332 transitions, 5972 flow. Second operand 12 states and 1240 transitions. [2023-11-10 11:45:24,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 363 transitions, 7364 flow [2023-11-10 11:45:24,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 363 transitions, 7076 flow, removed 83 selfloop flow, removed 11 redundant places. [2023-11-10 11:45:24,365 INFO L231 Difference]: Finished difference. Result has 211 places, 342 transitions, 6210 flow [2023-11-10 11:45:24,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=5780, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6210, PETRI_PLACES=211, PETRI_TRANSITIONS=342} [2023-11-10 11:45:24,366 INFO L281 CegarLoopForPetriNet]: 137 programPoint places, 74 predicate places. [2023-11-10 11:45:24,366 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 342 transitions, 6210 flow [2023-11-10 11:45:24,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 101.57142857142857) internal successors, (1422), 14 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:24,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:45:24,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:45:24,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-10 11:45:24,367 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-10 11:45:24,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:45:24,367 INFO L85 PathProgramCache]: Analyzing trace with hash 669790179, now seen corresponding path program 1 times [2023-11-10 11:45:24,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:45:24,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588484569] [2023-11-10 11:45:24,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:45:24,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:45:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:45:24,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:45:24,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:45:24,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588484569] [2023-11-10 11:45:24,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588484569] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:45:24,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:45:24,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 11:45:24,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346086724] [2023-11-10 11:45:24,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:45:24,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 11:45:24,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:45:24,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 11:45:24,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-10 11:45:24,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 130 [2023-11-10 11:45:24,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 342 transitions, 6210 flow. Second operand has 6 states, 6 states have (on average 105.83333333333333) internal successors, (635), 6 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:24,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:45:24,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 130 [2023-11-10 11:45:24,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:45:31,824 INFO L124 PetriNetUnfolderBase]: 20073/33969 cut-off events. [2023-11-10 11:45:31,824 INFO L125 PetriNetUnfolderBase]: For 1423873/1509397 co-relation queries the response was YES. [2023-11-10 11:45:32,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248603 conditions, 33969 events. 20073/33969 cut-off events. For 1423873/1509397 co-relation queries the response was YES. Maximal size of possible extension queue 2535. Compared 314954 event pairs, 685 based on Foata normal form. 4348/36431 useless extension candidates. Maximal degree in co-relation 248475. Up to 13805 conditions per place. [2023-11-10 11:45:32,178 INFO L140 encePairwiseOnDemand]: 119/130 looper letters, 371 selfloop transitions, 20 changer transitions 117/693 dead transitions. [2023-11-10 11:45:32,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 693 transitions, 16931 flow [2023-11-10 11:45:32,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-10 11:45:32,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-10 11:45:32,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1116 transitions. [2023-11-10 11:45:32,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8584615384615385 [2023-11-10 11:45:32,180 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1116 transitions. [2023-11-10 11:45:32,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1116 transitions. [2023-11-10 11:45:32,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:45:32,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1116 transitions. [2023-11-10 11:45:32,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 111.6) internal successors, (1116), 10 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:32,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 130.0) internal successors, (1430), 11 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:32,182 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 130.0) internal successors, (1430), 11 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:32,182 INFO L175 Difference]: Start difference. First operand has 211 places, 342 transitions, 6210 flow. Second operand 10 states and 1116 transitions. [2023-11-10 11:45:32,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 693 transitions, 16931 flow [2023-11-10 11:45:33,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 693 transitions, 16736 flow, removed 11 selfloop flow, removed 10 redundant places. [2023-11-10 11:45:33,240 INFO L231 Difference]: Finished difference. Result has 213 places, 342 transitions, 5879 flow [2023-11-10 11:45:33,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=5736, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5879, PETRI_PLACES=213, PETRI_TRANSITIONS=342} [2023-11-10 11:45:33,241 INFO L281 CegarLoopForPetriNet]: 137 programPoint places, 76 predicate places. [2023-11-10 11:45:33,241 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 342 transitions, 5879 flow [2023-11-10 11:45:33,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 105.83333333333333) internal successors, (635), 6 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:33,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:45:33,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:45:33,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-10 11:45:33,242 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-10 11:45:33,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:45:33,242 INFO L85 PathProgramCache]: Analyzing trace with hash -167069075, now seen corresponding path program 1 times [2023-11-10 11:45:33,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:45:33,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725983186] [2023-11-10 11:45:33,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:45:33,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:45:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:45:34,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:45:34,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:45:34,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725983186] [2023-11-10 11:45:34,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725983186] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:45:34,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:45:34,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-10 11:45:34,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103544684] [2023-11-10 11:45:34,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:45:34,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-10 11:45:34,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:45:34,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-10 11:45:34,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-11-10 11:45:34,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 130 [2023-11-10 11:45:34,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 342 transitions, 5879 flow. Second operand has 13 states, 13 states have (on average 95.0) internal successors, (1235), 13 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:34,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:45:34,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 130 [2023-11-10 11:45:34,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:45:37,219 INFO L124 PetriNetUnfolderBase]: 4192/14068 cut-off events. [2023-11-10 11:45:37,219 INFO L125 PetriNetUnfolderBase]: For 198971/311433 co-relation queries the response was YES. [2023-11-10 11:45:37,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75053 conditions, 14068 events. 4192/14068 cut-off events. For 198971/311433 co-relation queries the response was YES. Maximal size of possible extension queue 1263. Compared 180362 event pairs, 817 based on Foata normal form. 1225/14300 useless extension candidates. Maximal degree in co-relation 74916. Up to 3380 conditions per place. [2023-11-10 11:45:37,399 INFO L140 encePairwiseOnDemand]: 113/130 looper letters, 199 selfloop transitions, 209 changer transitions 0/503 dead transitions. [2023-11-10 11:45:37,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 503 transitions, 10398 flow [2023-11-10 11:45:37,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-10 11:45:37,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-10 11:45:37,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1892 transitions. [2023-11-10 11:45:37,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7659919028340081 [2023-11-10 11:45:37,402 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1892 transitions. [2023-11-10 11:45:37,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1892 transitions. [2023-11-10 11:45:37,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:45:37,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1892 transitions. [2023-11-10 11:45:37,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 99.57894736842105) internal successors, (1892), 19 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:37,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 130.0) internal successors, (2600), 20 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:37,407 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 130.0) internal successors, (2600), 20 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:37,407 INFO L175 Difference]: Start difference. First operand has 213 places, 342 transitions, 5879 flow. Second operand 19 states and 1892 transitions. [2023-11-10 11:45:37,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 503 transitions, 10398 flow [2023-11-10 11:45:37,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 503 transitions, 10372 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-10 11:45:37,797 INFO L231 Difference]: Finished difference. Result has 238 places, 437 transitions, 9102 flow [2023-11-10 11:45:37,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=5871, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=9102, PETRI_PLACES=238, PETRI_TRANSITIONS=437} [2023-11-10 11:45:37,798 INFO L281 CegarLoopForPetriNet]: 137 programPoint places, 101 predicate places. [2023-11-10 11:45:37,798 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 437 transitions, 9102 flow [2023-11-10 11:45:37,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 95.0) internal successors, (1235), 13 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:37,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:45:37,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:45:37,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-10 11:45:37,799 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-10 11:45:37,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:45:37,799 INFO L85 PathProgramCache]: Analyzing trace with hash -651746593, now seen corresponding path program 1 times [2023-11-10 11:45:37,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:45:37,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927605885] [2023-11-10 11:45:37,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:45:37,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:45:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:45:37,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:45:37,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:45:37,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927605885] [2023-11-10 11:45:37,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927605885] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:45:37,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:45:37,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 11:45:37,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779194444] [2023-11-10 11:45:37,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:45:37,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 11:45:37,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:45:37,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 11:45:37,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-10 11:45:37,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 130 [2023-11-10 11:45:37,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 437 transitions, 9102 flow. Second operand has 7 states, 7 states have (on average 105.57142857142857) internal successors, (739), 7 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:37,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:45:37,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 130 [2023-11-10 11:45:37,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:45:46,021 INFO L124 PetriNetUnfolderBase]: 18022/33062 cut-off events. [2023-11-10 11:45:46,021 INFO L125 PetriNetUnfolderBase]: For 1355660/1439875 co-relation queries the response was YES. [2023-11-10 11:45:46,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265236 conditions, 33062 events. 18022/33062 cut-off events. For 1355660/1439875 co-relation queries the response was YES. Maximal size of possible extension queue 2629. Compared 336294 event pairs, 362 based on Foata normal form. 5436/37546 useless extension candidates. Maximal degree in co-relation 265097. Up to 9547 conditions per place. [2023-11-10 11:45:46,401 INFO L140 encePairwiseOnDemand]: 119/130 looper letters, 422 selfloop transitions, 38 changer transitions 216/886 dead transitions. [2023-11-10 11:45:46,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 886 transitions, 24239 flow [2023-11-10 11:45:46,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-10 11:45:46,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-10 11:45:46,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1453 transitions. [2023-11-10 11:45:46,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8597633136094674 [2023-11-10 11:45:46,404 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1453 transitions. [2023-11-10 11:45:46,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1453 transitions. [2023-11-10 11:45:46,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:45:46,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1453 transitions. [2023-11-10 11:45:46,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 111.76923076923077) internal successors, (1453), 13 states have internal predecessors, (1453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:46,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 130.0) internal successors, (1820), 14 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:46,408 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 130.0) internal successors, (1820), 14 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:46,408 INFO L175 Difference]: Start difference. First operand has 238 places, 437 transitions, 9102 flow. Second operand 13 states and 1453 transitions. [2023-11-10 11:45:46,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 886 transitions, 24239 flow [2023-11-10 11:45:49,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 886 transitions, 22458 flow, removed 889 selfloop flow, removed 2 redundant places. [2023-11-10 11:45:49,244 INFO L231 Difference]: Finished difference. Result has 254 places, 368 transitions, 6527 flow [2023-11-10 11:45:49,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=6889, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6527, PETRI_PLACES=254, PETRI_TRANSITIONS=368} [2023-11-10 11:45:49,244 INFO L281 CegarLoopForPetriNet]: 137 programPoint places, 117 predicate places. [2023-11-10 11:45:49,245 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 368 transitions, 6527 flow [2023-11-10 11:45:49,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 105.57142857142857) internal successors, (739), 7 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:49,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:45:49,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:45:49,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-10 11:45:49,245 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-10 11:45:49,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:45:49,245 INFO L85 PathProgramCache]: Analyzing trace with hash 789640306, now seen corresponding path program 1 times [2023-11-10 11:45:49,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:45:49,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558898458] [2023-11-10 11:45:49,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:45:49,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:45:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:45:49,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:45:49,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:45:49,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558898458] [2023-11-10 11:45:49,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558898458] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:45:49,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:45:49,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 11:45:49,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5778517] [2023-11-10 11:45:49,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:45:49,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 11:45:49,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:45:49,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 11:45:49,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-10 11:45:49,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 130 [2023-11-10 11:45:49,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 368 transitions, 6527 flow. Second operand has 7 states, 7 states have (on average 107.42857142857143) internal successors, (752), 7 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:49,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:45:49,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 130 [2023-11-10 11:45:49,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:45:53,159 INFO L124 PetriNetUnfolderBase]: 6008/20473 cut-off events. [2023-11-10 11:45:53,159 INFO L125 PetriNetUnfolderBase]: For 192919/213005 co-relation queries the response was YES. [2023-11-10 11:45:53,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98764 conditions, 20473 events. 6008/20473 cut-off events. For 192919/213005 co-relation queries the response was YES. Maximal size of possible extension queue 2736. Compared 295499 event pairs, 250 based on Foata normal form. 526/19775 useless extension candidates. Maximal degree in co-relation 98617. Up to 5904 conditions per place. [2023-11-10 11:45:53,403 INFO L140 encePairwiseOnDemand]: 124/130 looper letters, 177 selfloop transitions, 19 changer transitions 101/508 dead transitions. [2023-11-10 11:45:53,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 508 transitions, 10723 flow [2023-11-10 11:45:53,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-10 11:45:53,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-10 11:45:53,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 777 transitions. [2023-11-10 11:45:53,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8538461538461538 [2023-11-10 11:45:53,405 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 777 transitions. [2023-11-10 11:45:53,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 777 transitions. [2023-11-10 11:45:53,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:45:53,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 777 transitions. [2023-11-10 11:45:53,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 111.0) internal successors, (777), 7 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:53,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 130.0) internal successors, (1040), 8 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:53,407 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 130.0) internal successors, (1040), 8 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:53,407 INFO L175 Difference]: Start difference. First operand has 254 places, 368 transitions, 6527 flow. Second operand 7 states and 777 transitions. [2023-11-10 11:45:53,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 508 transitions, 10723 flow [2023-11-10 11:45:57,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 508 transitions, 10214 flow, removed 245 selfloop flow, removed 9 redundant places. [2023-11-10 11:45:57,325 INFO L231 Difference]: Finished difference. Result has 247 places, 331 transitions, 5457 flow [2023-11-10 11:45:57,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=6188, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5457, PETRI_PLACES=247, PETRI_TRANSITIONS=331} [2023-11-10 11:45:57,325 INFO L281 CegarLoopForPetriNet]: 137 programPoint places, 110 predicate places. [2023-11-10 11:45:57,326 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 331 transitions, 5457 flow [2023-11-10 11:45:57,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.42857142857143) internal successors, (752), 7 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:57,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:45:57,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:45:57,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-10 11:45:57,326 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-10 11:45:57,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:45:57,327 INFO L85 PathProgramCache]: Analyzing trace with hash -671407588, now seen corresponding path program 2 times [2023-11-10 11:45:57,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:45:57,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581156989] [2023-11-10 11:45:57,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:45:57,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:45:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:45:57,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:45:57,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:45:57,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581156989] [2023-11-10 11:45:57,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581156989] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:45:57,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:45:57,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 11:45:57,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613896248] [2023-11-10 11:45:57,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:45:57,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 11:45:57,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:45:57,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 11:45:57,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-10 11:45:57,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 130 [2023-11-10 11:45:57,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 331 transitions, 5457 flow. Second operand has 7 states, 7 states have (on average 96.71428571428571) internal successors, (677), 7 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:45:57,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:45:57,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 130 [2023-11-10 11:45:57,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:46:02,634 INFO L124 PetriNetUnfolderBase]: 7618/26129 cut-off events. [2023-11-10 11:46:02,634 INFO L125 PetriNetUnfolderBase]: For 177331/194116 co-relation queries the response was YES. [2023-11-10 11:46:03,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105641 conditions, 26129 events. 7618/26129 cut-off events. For 177331/194116 co-relation queries the response was YES. Maximal size of possible extension queue 3615. Compared 392346 event pairs, 404 based on Foata normal form. 611/24970 useless extension candidates. Maximal degree in co-relation 105487. Up to 5043 conditions per place. [2023-11-10 11:46:03,186 INFO L140 encePairwiseOnDemand]: 115/130 looper letters, 221 selfloop transitions, 88 changer transitions 41/465 dead transitions. [2023-11-10 11:46:03,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 465 transitions, 9158 flow [2023-11-10 11:46:03,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-10 11:46:03,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-10 11:46:03,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1309 transitions. [2023-11-10 11:46:03,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7745562130177515 [2023-11-10 11:46:03,188 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1309 transitions. [2023-11-10 11:46:03,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1309 transitions. [2023-11-10 11:46:03,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:46:03,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1309 transitions. [2023-11-10 11:46:03,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 100.6923076923077) internal successors, (1309), 13 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:46:03,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 130.0) internal successors, (1820), 14 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:46:03,193 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 130.0) internal successors, (1820), 14 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:46:03,193 INFO L175 Difference]: Start difference. First operand has 247 places, 331 transitions, 5457 flow. Second operand 13 states and 1309 transitions. [2023-11-10 11:46:03,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 465 transitions, 9158 flow [2023-11-10 11:46:05,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 465 transitions, 8511 flow, removed 289 selfloop flow, removed 16 redundant places. [2023-11-10 11:46:05,985 INFO L231 Difference]: Finished difference. Result has 252 places, 350 transitions, 5959 flow [2023-11-10 11:46:05,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=5145, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5959, PETRI_PLACES=252, PETRI_TRANSITIONS=350} [2023-11-10 11:46:05,986 INFO L281 CegarLoopForPetriNet]: 137 programPoint places, 115 predicate places. [2023-11-10 11:46:05,986 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 350 transitions, 5959 flow [2023-11-10 11:46:05,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 96.71428571428571) internal successors, (677), 7 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:46:05,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:46:05,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:46:05,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-10 11:46:05,986 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-10 11:46:05,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:46:05,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1469176749, now seen corresponding path program 1 times [2023-11-10 11:46:05,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:46:05,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639204155] [2023-11-10 11:46:05,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:46:05,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:46:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:46:06,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:46:06,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:46:06,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639204155] [2023-11-10 11:46:06,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639204155] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:46:06,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:46:06,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-10 11:46:06,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963163081] [2023-11-10 11:46:06,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:46:06,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-10 11:46:06,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:46:06,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-10 11:46:06,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-10 11:46:06,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 130 [2023-11-10 11:46:06,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 350 transitions, 5959 flow. Second operand has 8 states, 8 states have (on average 105.375) internal successors, (843), 8 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:46:06,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:46:06,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 130 [2023-11-10 11:46:06,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:46:22,347 INFO L124 PetriNetUnfolderBase]: 33770/63179 cut-off events. [2023-11-10 11:46:22,347 INFO L125 PetriNetUnfolderBase]: For 1537292/1621562 co-relation queries the response was YES. [2023-11-10 11:46:23,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 448692 conditions, 63179 events. 33770/63179 cut-off events. For 1537292/1621562 co-relation queries the response was YES. Maximal size of possible extension queue 5793. Compared 724360 event pairs, 422 based on Foata normal form. 12518/73588 useless extension candidates. Maximal degree in co-relation 448546. Up to 16105 conditions per place. [2023-11-10 11:46:23,462 INFO L140 encePairwiseOnDemand]: 119/130 looper letters, 164 selfloop transitions, 52 changer transitions 492/882 dead transitions. [2023-11-10 11:46:23,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 882 transitions, 21311 flow [2023-11-10 11:46:23,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-10 11:46:23,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-10 11:46:23,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1788 transitions. [2023-11-10 11:46:23,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8596153846153847 [2023-11-10 11:46:23,464 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1788 transitions. [2023-11-10 11:46:23,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1788 transitions. [2023-11-10 11:46:23,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:46:23,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1788 transitions. [2023-11-10 11:46:23,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 111.75) internal successors, (1788), 16 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:46:23,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 130.0) internal successors, (2210), 17 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:46:23,469 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 130.0) internal successors, (2210), 17 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:46:23,469 INFO L175 Difference]: Start difference. First operand has 252 places, 350 transitions, 5959 flow. Second operand 16 states and 1788 transitions. [2023-11-10 11:46:23,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 882 transitions, 21311 flow [2023-11-10 11:46:36,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 882 transitions, 20713 flow, removed 137 selfloop flow, removed 6 redundant places. [2023-11-10 11:46:36,189 INFO L231 Difference]: Finished difference. Result has 265 places, 294 transitions, 4468 flow [2023-11-10 11:46:36,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=5546, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4468, PETRI_PLACES=265, PETRI_TRANSITIONS=294} [2023-11-10 11:46:36,190 INFO L281 CegarLoopForPetriNet]: 137 programPoint places, 128 predicate places. [2023-11-10 11:46:36,190 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 294 transitions, 4468 flow [2023-11-10 11:46:36,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 105.375) internal successors, (843), 8 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:46:36,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:46:36,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:46:36,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-10 11:46:36,191 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-10 11:46:36,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:46:36,192 INFO L85 PathProgramCache]: Analyzing trace with hash 269177436, now seen corresponding path program 1 times [2023-11-10 11:46:36,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:46:36,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231123166] [2023-11-10 11:46:36,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:46:36,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:46:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:46:36,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:46:36,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:46:36,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231123166] [2023-11-10 11:46:36,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231123166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:46:36,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:46:36,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-10 11:46:36,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641266976] [2023-11-10 11:46:36,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:46:36,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-10 11:46:36,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:46:36,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-10 11:46:36,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-10 11:46:36,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 130 [2023-11-10 11:46:36,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 294 transitions, 4468 flow. Second operand has 9 states, 9 states have (on average 105.33333333333333) internal successors, (948), 9 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:46:36,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:46:36,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 130 [2023-11-10 11:46:36,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand