/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/weaver/chl-node-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 15:10:52,778 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 15:10:52,848 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 [2023-12-09 15:10:52,874 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 15:10:52,874 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 15:10:52,875 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 15:10:52,875 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 15:10:52,875 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 15:10:52,876 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 15:10:52,879 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 15:10:52,879 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 15:10:52,879 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 15:10:52,880 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 15:10:52,880 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 15:10:52,881 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 15:10:52,881 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 15:10:52,881 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 15:10:52,881 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 15:10:52,881 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 15:10:52,881 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 15:10:52,881 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 15:10:52,882 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 15:10:52,882 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 15:10:52,882 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 15:10:52,883 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 15:10:52,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:10:52,883 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 15:10:52,883 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 15:10:52,883 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 15:10:52,883 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 15:10:52,884 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 15:10:52,884 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 15:10:52,884 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 15:10:52,884 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 15:10:53,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 15:10:53,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 15:10:53,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 15:10:53,097 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 15:10:53,098 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 15:10:53,099 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-symm.wvr.c [2023-12-09 15:10:54,200 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 15:10:54,381 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 15:10:54,381 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-symm.wvr.c [2023-12-09 15:10:54,387 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b7674b84/1cfde24821f44d09a59d54041ad5559e/FLAG1af7ff9cf [2023-12-09 15:10:54,399 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b7674b84/1cfde24821f44d09a59d54041ad5559e [2023-12-09 15:10:54,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 15:10:54,402 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 15:10:54,403 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 15:10:54,403 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 15:10:54,406 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 15:10:54,407 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:10:54" (1/1) ... [2023-12-09 15:10:54,407 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@680d7999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:10:54, skipping insertion in model container [2023-12-09 15:10:54,407 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:10:54" (1/1) ... [2023-12-09 15:10:54,426 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 15:10:54,572 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-symm.wvr.c[3331,3344] [2023-12-09 15:10:54,594 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:10:54,606 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 15:10:54,640 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-symm.wvr.c[3331,3344] [2023-12-09 15:10:54,643 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:10:54,656 INFO L206 MainTranslator]: Completed translation [2023-12-09 15:10:54,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:10:54 WrapperNode [2023-12-09 15:10:54,656 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 15:10:54,658 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 15:10:54,658 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 15:10:54,658 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 15:10:54,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:10:54" (1/1) ... [2023-12-09 15:10:54,678 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:10:54" (1/1) ... [2023-12-09 15:10:54,711 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 299 [2023-12-09 15:10:54,712 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 15:10:54,712 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 15:10:54,712 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 15:10:54,713 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 15:10:54,720 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:10:54" (1/1) ... [2023-12-09 15:10:54,721 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:10:54" (1/1) ... [2023-12-09 15:10:54,733 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:10:54" (1/1) ... [2023-12-09 15:10:54,734 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:10:54" (1/1) ... [2023-12-09 15:10:54,740 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:10:54" (1/1) ... [2023-12-09 15:10:54,743 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:10:54" (1/1) ... [2023-12-09 15:10:54,752 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:10:54" (1/1) ... [2023-12-09 15:10:54,753 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:10:54" (1/1) ... [2023-12-09 15:10:54,759 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 15:10:54,760 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 15:10:54,760 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 15:10:54,760 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 15:10:54,761 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:10:54" (1/1) ... [2023-12-09 15:10:54,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:10:54,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:10:54,791 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) [2023-12-09 15:10:54,793 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 [2023-12-09 15:10:54,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 15:10:54,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 15:10:54,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 15:10:54,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 15:10:54,813 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-09 15:10:54,813 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-09 15:10:54,813 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-09 15:10:54,813 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-09 15:10:54,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 15:10:54,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-09 15:10:54,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 15:10:54,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 15:10:54,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 15:10:54,814 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-09 15:10:54,898 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 15:10:54,899 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 15:10:55,321 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 15:10:55,333 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 15:10:55,334 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-09 15:10:55,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:10:55 BoogieIcfgContainer [2023-12-09 15:10:55,335 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 15:10:55,337 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 15:10:55,337 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 15:10:55,340 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 15:10:55,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:10:54" (1/3) ... [2023-12-09 15:10:55,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@553132d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:10:55, skipping insertion in model container [2023-12-09 15:10:55,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:10:54" (2/3) ... [2023-12-09 15:10:55,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@553132d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:10:55, skipping insertion in model container [2023-12-09 15:10:55,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:10:55" (3/3) ... [2023-12-09 15:10:55,342 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2023-12-09 15:10:55,355 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 15:10:55,356 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 15:10:55,356 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 15:10:55,421 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-09 15:10:55,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 367 places, 388 transitions, 790 flow [2023-12-09 15:10:55,634 INFO L124 PetriNetUnfolderBase]: 28/386 cut-off events. [2023-12-09 15:10:55,635 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:10:55,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 395 conditions, 386 events. 28/386 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 370 event pairs, 0 based on Foata normal form. 0/357 useless extension candidates. Maximal degree in co-relation 306. Up to 2 conditions per place. [2023-12-09 15:10:55,639 INFO L82 GeneralOperation]: Start removeDead. Operand has 367 places, 388 transitions, 790 flow [2023-12-09 15:10:55,644 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 356 places, 377 transitions, 766 flow [2023-12-09 15:10:55,650 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:10:55,661 INFO L362 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=true, 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;@c93ea88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:10:55,661 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-09 15:10:55,714 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:10:55,714 INFO L124 PetriNetUnfolderBase]: 28/376 cut-off events. [2023-12-09 15:10:55,714 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:10:55,715 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:10:55,716 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:10:55,716 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:10:55,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:10:55,721 INFO L85 PathProgramCache]: Analyzing trace with hash -739739730, now seen corresponding path program 1 times [2023-12-09 15:10:55,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:10:55,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679969683] [2023-12-09 15:10:55,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:10:55,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:10:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:10:56,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:10:56,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:10:56,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679969683] [2023-12-09 15:10:56,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679969683] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:10:56,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:10:56,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-09 15:10:56,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739433567] [2023-12-09 15:10:56,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:10:56,150 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 15:10:56,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:10:56,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 15:10:56,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 15:10:56,177 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 356 out of 388 [2023-12-09 15:10:56,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 377 transitions, 766 flow. Second operand has 3 states, 3 states have (on average 358.6666666666667) internal successors, (1076), 3 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:10:56,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:10:56,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 356 of 388 [2023-12-09 15:10:56,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:10:56,288 INFO L124 PetriNetUnfolderBase]: 19/475 cut-off events. [2023-12-09 15:10:56,288 INFO L125 PetriNetUnfolderBase]: For 22/29 co-relation queries the response was YES. [2023-12-09 15:10:56,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 528 conditions, 475 events. 19/475 cut-off events. For 22/29 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1062 event pairs, 5 based on Foata normal form. 27/469 useless extension candidates. Maximal degree in co-relation 304. Up to 22 conditions per place. [2023-12-09 15:10:56,295 INFO L140 encePairwiseOnDemand]: 364/388 looper letters, 11 selfloop transitions, 3 changer transitions 12/360 dead transitions. [2023-12-09 15:10:56,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 360 transitions, 763 flow [2023-12-09 15:10:56,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 15:10:56,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 15:10:56,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1105 transitions. [2023-12-09 15:10:56,341 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9493127147766323 [2023-12-09 15:10:56,342 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1105 transitions. [2023-12-09 15:10:56,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1105 transitions. [2023-12-09 15:10:56,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:10:56,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1105 transitions. [2023-12-09 15:10:56,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 368.3333333333333) internal successors, (1105), 3 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:10:56,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 388.0) internal successors, (1552), 4 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:10:56,359 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 388.0) internal successors, (1552), 4 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:10:56,364 INFO L308 CegarLoopForPetriNet]: 356 programPoint places, 2 predicate places. [2023-12-09 15:10:56,364 INFO L500 AbstractCegarLoop]: Abstraction has has 358 places, 360 transitions, 763 flow [2023-12-09 15:10:56,365 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 358.6666666666667) internal successors, (1076), 3 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:10:56,365 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:10:56,365 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:10:56,366 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 15:10:56,366 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:10:56,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:10:56,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1995494424, now seen corresponding path program 1 times [2023-12-09 15:10:56,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:10:56,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835026004] [2023-12-09 15:10:56,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:10:56,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:10:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:10:56,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:10:56,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:10:56,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835026004] [2023-12-09 15:10:56,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835026004] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:10:56,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:10:56,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-09 15:10:56,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297855501] [2023-12-09 15:10:56,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:10:56,502 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 15:10:56,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:10:56,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 15:10:56,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 15:10:56,505 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 356 out of 388 [2023-12-09 15:10:56,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 360 transitions, 763 flow. Second operand has 3 states, 3 states have (on average 358.6666666666667) internal successors, (1076), 3 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:10:56,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:10:56,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 356 of 388 [2023-12-09 15:10:56,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:10:56,570 INFO L124 PetriNetUnfolderBase]: 28/544 cut-off events. [2023-12-09 15:10:56,571 INFO L125 PetriNetUnfolderBase]: For 93/97 co-relation queries the response was YES. [2023-12-09 15:10:56,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 657 conditions, 544 events. 28/544 cut-off events. For 93/97 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1380 event pairs, 11 based on Foata normal form. 0/502 useless extension candidates. Maximal degree in co-relation 311. Up to 35 conditions per place. [2023-12-09 15:10:56,573 INFO L140 encePairwiseOnDemand]: 384/388 looper letters, 12 selfloop transitions, 3 changer transitions 12/363 dead transitions. [2023-12-09 15:10:56,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 363 transitions, 804 flow [2023-12-09 15:10:56,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 15:10:56,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 15:10:56,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1083 transitions. [2023-12-09 15:10:56,576 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9304123711340206 [2023-12-09 15:10:56,576 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1083 transitions. [2023-12-09 15:10:56,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1083 transitions. [2023-12-09 15:10:56,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:10:56,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1083 transitions. [2023-12-09 15:10:56,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 361.0) internal successors, (1083), 3 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:10:56,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 388.0) internal successors, (1552), 4 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:10:56,581 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 388.0) internal successors, (1552), 4 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:10:56,582 INFO L308 CegarLoopForPetriNet]: 356 programPoint places, 4 predicate places. [2023-12-09 15:10:56,582 INFO L500 AbstractCegarLoop]: Abstraction has has 360 places, 363 transitions, 804 flow [2023-12-09 15:10:56,583 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 358.6666666666667) internal successors, (1076), 3 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:10:56,583 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:10:56,583 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:10:56,584 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 15:10:56,585 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:10:56,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:10:56,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1108227172, now seen corresponding path program 1 times [2023-12-09 15:10:56,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:10:56,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551112361] [2023-12-09 15:10:56,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:10:56,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:10:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:10:57,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:10:57,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:10:57,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551112361] [2023-12-09 15:10:57,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551112361] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:10:57,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:10:57,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-09 15:10:57,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069697076] [2023-12-09 15:10:57,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:10:57,041 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-09 15:10:57,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:10:57,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-09 15:10:57,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-12-09 15:10:57,046 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 388 [2023-12-09 15:10:57,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 363 transitions, 804 flow. Second operand has 8 states, 8 states have (on average 256.625) internal successors, (2053), 8 states have internal predecessors, (2053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:10:57,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:10:57,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 388 [2023-12-09 15:10:57,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:10:57,258 INFO L124 PetriNetUnfolderBase]: 47/686 cut-off events. [2023-12-09 15:10:57,262 INFO L125 PetriNetUnfolderBase]: For 192/192 co-relation queries the response was YES. [2023-12-09 15:10:57,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1010 conditions, 686 events. 47/686 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2350 event pairs, 23 based on Foata normal form. 0/632 useless extension candidates. Maximal degree in co-relation 508. Up to 136 conditions per place. [2023-12-09 15:10:57,313 INFO L140 encePairwiseOnDemand]: 376/388 looper letters, 106 selfloop transitions, 11 changer transitions 12/367 dead transitions. [2023-12-09 15:10:57,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 367 transitions, 1070 flow [2023-12-09 15:10:57,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 15:10:57,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 15:10:57,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2080 transitions. [2023-12-09 15:10:57,318 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6701030927835051 [2023-12-09 15:10:57,318 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2080 transitions. [2023-12-09 15:10:57,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2080 transitions. [2023-12-09 15:10:57,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:10:57,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2080 transitions. [2023-12-09 15:10:57,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 260.0) internal successors, (2080), 8 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:10:57,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 388.0) internal successors, (3492), 9 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:10:57,328 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 388.0) internal successors, (3492), 9 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:10:57,330 INFO L308 CegarLoopForPetriNet]: 356 programPoint places, 11 predicate places. [2023-12-09 15:10:57,330 INFO L500 AbstractCegarLoop]: Abstraction has has 367 places, 367 transitions, 1070 flow [2023-12-09 15:10:57,331 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 256.625) internal successors, (2053), 8 states have internal predecessors, (2053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:10:57,331 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:10:57,331 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:10:57,331 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 15:10:57,331 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:10:57,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:10:57,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1868151131, now seen corresponding path program 1 times [2023-12-09 15:10:57,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:10:57,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484049271] [2023-12-09 15:10:57,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:10:57,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:10:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:10:57,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:10:57,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:10:57,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484049271] [2023-12-09 15:10:57,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484049271] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:10:57,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709313742] [2023-12-09 15:10:57,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:10:57,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:10:57,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:10:57,640 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:10:57,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-09 15:10:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:10:57,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-09 15:10:57,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:10:57,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:10:57,968 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:10:58,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:10:58,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709313742] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-09 15:10:58,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-09 15:10:58,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 16 [2023-12-09 15:10:58,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470754051] [2023-12-09 15:10:58,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:10:58,174 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-09 15:10:58,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:10:58,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-09 15:10:58,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:10:58,176 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 388 [2023-12-09 15:10:58,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 367 transitions, 1070 flow. Second operand has 9 states, 9 states have (on average 301.44444444444446) internal successors, (2713), 9 states have internal predecessors, (2713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:10:58,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:10:58,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 388 [2023-12-09 15:10:58,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:10:58,353 INFO L124 PetriNetUnfolderBase]: 47/687 cut-off events. [2023-12-09 15:10:58,353 INFO L125 PetriNetUnfolderBase]: For 324/332 co-relation queries the response was YES. [2023-12-09 15:10:58,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1133 conditions, 687 events. 47/687 cut-off events. For 324/332 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2350 event pairs, 23 based on Foata normal form. 0/633 useless extension candidates. Maximal degree in co-relation 546. Up to 136 conditions per place. [2023-12-09 15:10:58,356 INFO L140 encePairwiseOnDemand]: 372/388 looper letters, 64 selfloop transitions, 15 changer transitions 12/368 dead transitions. [2023-12-09 15:10:58,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 368 transitions, 1230 flow [2023-12-09 15:10:58,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 15:10:58,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 15:10:58,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3025 transitions. [2023-12-09 15:10:58,361 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.779639175257732 [2023-12-09 15:10:58,361 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3025 transitions. [2023-12-09 15:10:58,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3025 transitions. [2023-12-09 15:10:58,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:10:58,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3025 transitions. [2023-12-09 15:10:58,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 302.5) internal successors, (3025), 10 states have internal predecessors, (3025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:10:58,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 388.0) internal successors, (4268), 11 states have internal predecessors, (4268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:10:58,372 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 388.0) internal successors, (4268), 11 states have internal predecessors, (4268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:10:58,373 INFO L308 CegarLoopForPetriNet]: 356 programPoint places, 20 predicate places. [2023-12-09 15:10:58,373 INFO L500 AbstractCegarLoop]: Abstraction has has 376 places, 368 transitions, 1230 flow [2023-12-09 15:10:58,374 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 301.44444444444446) internal successors, (2713), 9 states have internal predecessors, (2713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:10:58,374 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:10:58,374 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:10:58,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-09 15:10:58,579 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:10:58,580 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:10:58,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:10:58,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1123997761, now seen corresponding path program 1 times [2023-12-09 15:10:58,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:10:58,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782239263] [2023-12-09 15:10:58,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:10:58,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:10:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:10:58,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:10:58,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:10:58,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782239263] [2023-12-09 15:10:58,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782239263] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:10:58,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:10:58,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-09 15:10:58,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083288259] [2023-12-09 15:10:58,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:10:58,879 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-09 15:10:58,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:10:58,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-09 15:10:58,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-12-09 15:10:58,881 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 388 [2023-12-09 15:10:58,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 368 transitions, 1230 flow. Second operand has 8 states, 8 states have (on average 257.125) internal successors, (2057), 8 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:10:58,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:10:58,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 388 [2023-12-09 15:10:58,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:10:59,027 INFO L124 PetriNetUnfolderBase]: 71/749 cut-off events. [2023-12-09 15:10:59,027 INFO L125 PetriNetUnfolderBase]: For 618/646 co-relation queries the response was YES. [2023-12-09 15:10:59,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1457 conditions, 749 events. 71/749 cut-off events. For 618/646 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2781 event pairs, 45 based on Foata normal form. 0/678 useless extension candidates. Maximal degree in co-relation 692. Up to 155 conditions per place. [2023-12-09 15:10:59,032 INFO L140 encePairwiseOnDemand]: 376/388 looper letters, 110 selfloop transitions, 11 changer transitions 12/372 dead transitions. [2023-12-09 15:10:59,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 372 transitions, 1520 flow [2023-12-09 15:10:59,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 15:10:59,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 15:10:59,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2080 transitions. [2023-12-09 15:10:59,035 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6701030927835051 [2023-12-09 15:10:59,035 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2080 transitions. [2023-12-09 15:10:59,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2080 transitions. [2023-12-09 15:10:59,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:10:59,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2080 transitions. [2023-12-09 15:10:59,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 260.0) internal successors, (2080), 8 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:10:59,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 388.0) internal successors, (3492), 9 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:10:59,043 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 388.0) internal successors, (3492), 9 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:10:59,043 INFO L308 CegarLoopForPetriNet]: 356 programPoint places, 27 predicate places. [2023-12-09 15:10:59,043 INFO L500 AbstractCegarLoop]: Abstraction has has 383 places, 372 transitions, 1520 flow [2023-12-09 15:10:59,044 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 257.125) internal successors, (2057), 8 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:10:59,044 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:10:59,045 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:10:59,045 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-09 15:10:59,045 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:10:59,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:10:59,045 INFO L85 PathProgramCache]: Analyzing trace with hash -964978721, now seen corresponding path program 1 times [2023-12-09 15:10:59,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:10:59,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956527989] [2023-12-09 15:10:59,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:10:59,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:10:59,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:10:59,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:10:59,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:10:59,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956527989] [2023-12-09 15:10:59,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956527989] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:10:59,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965531214] [2023-12-09 15:10:59,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:10:59,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:10:59,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:10:59,267 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:10:59,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-09 15:10:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:10:59,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-09 15:10:59,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:10:59,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:10:59,540 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:10:59,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:10:59,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965531214] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-09 15:10:59,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-09 15:10:59,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 16 [2023-12-09 15:10:59,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488664384] [2023-12-09 15:10:59,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:10:59,702 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-09 15:10:59,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:10:59,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-09 15:10:59,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:10:59,704 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 388 [2023-12-09 15:10:59,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 372 transitions, 1520 flow. Second operand has 9 states, 9 states have (on average 302.3333333333333) internal successors, (2721), 9 states have internal predecessors, (2721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:10:59,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:10:59,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 388 [2023-12-09 15:10:59,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:10:59,906 INFO L124 PetriNetUnfolderBase]: 71/750 cut-off events. [2023-12-09 15:10:59,907 INFO L125 PetriNetUnfolderBase]: For 897/953 co-relation queries the response was YES. [2023-12-09 15:10:59,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1601 conditions, 750 events. 71/750 cut-off events. For 897/953 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2779 event pairs, 45 based on Foata normal form. 0/679 useless extension candidates. Maximal degree in co-relation 742. Up to 155 conditions per place. [2023-12-09 15:10:59,910 INFO L140 encePairwiseOnDemand]: 370/388 looper letters, 66 selfloop transitions, 18 changer transitions 12/373 dead transitions. [2023-12-09 15:10:59,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 373 transitions, 1692 flow [2023-12-09 15:10:59,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-09 15:10:59,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-12-09 15:10:59,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3320 transitions. [2023-12-09 15:10:59,915 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7778819119025304 [2023-12-09 15:10:59,915 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3320 transitions. [2023-12-09 15:10:59,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3320 transitions. [2023-12-09 15:10:59,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:10:59,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3320 transitions. [2023-12-09 15:10:59,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 301.8181818181818) internal successors, (3320), 11 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:10:59,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 388.0) internal successors, (4656), 12 states have internal predecessors, (4656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:10:59,926 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 388.0) internal successors, (4656), 12 states have internal predecessors, (4656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:10:59,927 INFO L308 CegarLoopForPetriNet]: 356 programPoint places, 37 predicate places. [2023-12-09 15:10:59,927 INFO L500 AbstractCegarLoop]: Abstraction has has 393 places, 373 transitions, 1692 flow [2023-12-09 15:10:59,928 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 302.3333333333333) internal successors, (2721), 9 states have internal predecessors, (2721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:10:59,928 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:10:59,928 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:10:59,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-09 15:11:00,133 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-09 15:11:00,133 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:11:00,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:11:00,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1126072472, now seen corresponding path program 1 times [2023-12-09 15:11:00,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:11:00,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882115423] [2023-12-09 15:11:00,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:11:00,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:11:00,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:11:01,554 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-09 15:11:01,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:11:01,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882115423] [2023-12-09 15:11:01,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882115423] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:11:01,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:11:01,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:11:01,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471187959] [2023-12-09 15:11:01,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:11:01,555 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:11:01,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:11:01,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:11:01,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:11:01,559 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 388 [2023-12-09 15:11:01,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 373 transitions, 1692 flow. Second operand has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:01,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:11:01,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 388 [2023-12-09 15:11:01,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:11:03,902 INFO L124 PetriNetUnfolderBase]: 1462/5479 cut-off events. [2023-12-09 15:11:03,903 INFO L125 PetriNetUnfolderBase]: For 4620/4662 co-relation queries the response was YES. [2023-12-09 15:11:03,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11033 conditions, 5479 events. 1462/5479 cut-off events. For 4620/4662 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 48751 event pairs, 56 based on Foata normal form. 2/5169 useless extension candidates. Maximal degree in co-relation 9093. Up to 814 conditions per place. [2023-12-09 15:11:03,932 INFO L140 encePairwiseOnDemand]: 355/388 looper letters, 362 selfloop transitions, 33 changer transitions 40/654 dead transitions. [2023-12-09 15:11:03,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 654 transitions, 3794 flow [2023-12-09 15:11:03,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-09 15:11:03,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-12-09 15:11:03,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 8676 transitions. [2023-12-09 15:11:03,947 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5884427563754747 [2023-12-09 15:11:03,947 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 8676 transitions. [2023-12-09 15:11:03,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 8676 transitions. [2023-12-09 15:11:03,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:11:03,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 8676 transitions. [2023-12-09 15:11:03,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 228.31578947368422) internal successors, (8676), 38 states have internal predecessors, (8676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:03,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 388.0) internal successors, (15132), 39 states have internal predecessors, (15132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:03,984 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 388.0) internal successors, (15132), 39 states have internal predecessors, (15132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:03,985 INFO L308 CegarLoopForPetriNet]: 356 programPoint places, 74 predicate places. [2023-12-09 15:11:03,985 INFO L500 AbstractCegarLoop]: Abstraction has has 430 places, 654 transitions, 3794 flow [2023-12-09 15:11:03,986 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:03,986 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:11:03,987 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:11:03,987 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-09 15:11:03,987 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:11:03,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:11:03,987 INFO L85 PathProgramCache]: Analyzing trace with hash -2044076872, now seen corresponding path program 2 times [2023-12-09 15:11:03,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:11:03,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210577264] [2023-12-09 15:11:03,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:11:03,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:11:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:11:05,259 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-09 15:11:05,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:11:05,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210577264] [2023-12-09 15:11:05,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210577264] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:11:05,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:11:05,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:11:05,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837338663] [2023-12-09 15:11:05,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:11:05,262 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:11:05,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:11:05,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:11:05,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:11:05,265 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 388 [2023-12-09 15:11:05,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 654 transitions, 3794 flow. Second operand has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:05,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:11:05,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 388 [2023-12-09 15:11:05,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:11:08,658 INFO L124 PetriNetUnfolderBase]: 2392/8884 cut-off events. [2023-12-09 15:11:08,658 INFO L125 PetriNetUnfolderBase]: For 10573/11969 co-relation queries the response was YES. [2023-12-09 15:11:08,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21944 conditions, 8884 events. 2392/8884 cut-off events. For 10573/11969 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 90038 event pairs, 30 based on Foata normal form. 224/8627 useless extension candidates. Maximal degree in co-relation 18095. Up to 1853 conditions per place. [2023-12-09 15:11:08,719 INFO L140 encePairwiseOnDemand]: 354/388 looper letters, 708 selfloop transitions, 106 changer transitions 69/1102 dead transitions. [2023-12-09 15:11:08,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 1102 transitions, 8448 flow [2023-12-09 15:11:08,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-09 15:11:08,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-12-09 15:11:08,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 8022 transitions. [2023-12-09 15:11:08,732 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5907216494845361 [2023-12-09 15:11:08,732 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 8022 transitions. [2023-12-09 15:11:08,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 8022 transitions. [2023-12-09 15:11:08,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:11:08,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 8022 transitions. [2023-12-09 15:11:08,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 229.2) internal successors, (8022), 35 states have internal predecessors, (8022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:08,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 388.0) internal successors, (13968), 36 states have internal predecessors, (13968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:08,764 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 388.0) internal successors, (13968), 36 states have internal predecessors, (13968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:08,766 INFO L308 CegarLoopForPetriNet]: 356 programPoint places, 108 predicate places. [2023-12-09 15:11:08,766 INFO L500 AbstractCegarLoop]: Abstraction has has 464 places, 1102 transitions, 8448 flow [2023-12-09 15:11:08,767 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:08,767 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:11:08,767 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:11:08,767 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-09 15:11:08,767 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:11:08,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:11:08,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1794272718, now seen corresponding path program 3 times [2023-12-09 15:11:08,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:11:08,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756550211] [2023-12-09 15:11:08,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:11:08,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:11:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:11:09,974 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-09 15:11:09,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:11:09,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756550211] [2023-12-09 15:11:09,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756550211] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:11:09,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:11:09,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:11:09,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042449221] [2023-12-09 15:11:09,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:11:09,979 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:11:09,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:11:09,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:11:09,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:11:09,982 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 388 [2023-12-09 15:11:09,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 1102 transitions, 8448 flow. Second operand has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:09,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:11:09,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 388 [2023-12-09 15:11:09,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:11:13,744 INFO L124 PetriNetUnfolderBase]: 3048/11551 cut-off events. [2023-12-09 15:11:13,744 INFO L125 PetriNetUnfolderBase]: For 19051/27529 co-relation queries the response was YES. [2023-12-09 15:11:13,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33374 conditions, 11551 events. 3048/11551 cut-off events. For 19051/27529 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 123942 event pairs, 116 based on Foata normal form. 418/11357 useless extension candidates. Maximal degree in co-relation 27587. Up to 2655 conditions per place. [2023-12-09 15:11:13,836 INFO L140 encePairwiseOnDemand]: 354/388 looper letters, 972 selfloop transitions, 125 changer transitions 97/1413 dead transitions. [2023-12-09 15:11:13,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 1413 transitions, 13479 flow [2023-12-09 15:11:13,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-09 15:11:13,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-12-09 15:11:13,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 8707 transitions. [2023-12-09 15:11:13,849 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5905453065653825 [2023-12-09 15:11:13,849 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 8707 transitions. [2023-12-09 15:11:13,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 8707 transitions. [2023-12-09 15:11:13,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:11:13,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 8707 transitions. [2023-12-09 15:11:13,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 229.1315789473684) internal successors, (8707), 38 states have internal predecessors, (8707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:13,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 388.0) internal successors, (15132), 39 states have internal predecessors, (15132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:13,885 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 388.0) internal successors, (15132), 39 states have internal predecessors, (15132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:13,886 INFO L308 CegarLoopForPetriNet]: 356 programPoint places, 145 predicate places. [2023-12-09 15:11:13,886 INFO L500 AbstractCegarLoop]: Abstraction has has 501 places, 1413 transitions, 13479 flow [2023-12-09 15:11:13,887 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:13,887 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:11:13,887 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:11:13,887 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-09 15:11:13,888 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:11:13,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:11:13,888 INFO L85 PathProgramCache]: Analyzing trace with hash 326548114, now seen corresponding path program 4 times [2023-12-09 15:11:13,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:11:13,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464034498] [2023-12-09 15:11:13,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:11:13,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:11:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:11:14,749 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-09 15:11:14,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:11:14,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464034498] [2023-12-09 15:11:14,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464034498] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:11:14,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:11:14,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:11:14,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942729222] [2023-12-09 15:11:14,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:11:14,751 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:11:14,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:11:14,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:11:14,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:11:14,755 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 388 [2023-12-09 15:11:14,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 1413 transitions, 13479 flow. Second operand has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:14,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:11:14,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 388 [2023-12-09 15:11:14,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:11:18,770 INFO L124 PetriNetUnfolderBase]: 3174/12138 cut-off events. [2023-12-09 15:11:18,771 INFO L125 PetriNetUnfolderBase]: For 27051/40009 co-relation queries the response was YES. [2023-12-09 15:11:18,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40555 conditions, 12138 events. 3174/12138 cut-off events. For 27051/40009 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 132449 event pairs, 40 based on Foata normal form. 792/12290 useless extension candidates. Maximal degree in co-relation 33259. Up to 2920 conditions per place. [2023-12-09 15:11:18,843 INFO L140 encePairwiseOnDemand]: 354/388 looper letters, 1052 selfloop transitions, 126 changer transitions 125/1522 dead transitions. [2023-12-09 15:11:18,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 1522 transitions, 17257 flow [2023-12-09 15:11:18,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-09 15:11:18,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-12-09 15:11:18,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 8707 transitions. [2023-12-09 15:11:18,851 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5905453065653825 [2023-12-09 15:11:18,851 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 8707 transitions. [2023-12-09 15:11:18,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 8707 transitions. [2023-12-09 15:11:18,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:11:18,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 8707 transitions. [2023-12-09 15:11:18,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 229.1315789473684) internal successors, (8707), 38 states have internal predecessors, (8707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:18,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 388.0) internal successors, (15132), 39 states have internal predecessors, (15132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:18,875 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 388.0) internal successors, (15132), 39 states have internal predecessors, (15132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:18,876 INFO L308 CegarLoopForPetriNet]: 356 programPoint places, 182 predicate places. [2023-12-09 15:11:18,876 INFO L500 AbstractCegarLoop]: Abstraction has has 538 places, 1522 transitions, 17257 flow [2023-12-09 15:11:18,876 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:18,876 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:11:18,877 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:11:18,877 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-09 15:11:18,877 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:11:18,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:11:18,877 INFO L85 PathProgramCache]: Analyzing trace with hash 971713690, now seen corresponding path program 5 times [2023-12-09 15:11:18,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:11:18,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122837020] [2023-12-09 15:11:18,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:11:18,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:11:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:11:19,733 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-09 15:11:19,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:11:19,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122837020] [2023-12-09 15:11:19,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122837020] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:11:19,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:11:19,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:11:19,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433037971] [2023-12-09 15:11:19,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:11:19,734 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:11:19,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:11:19,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:11:19,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:11:19,737 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 388 [2023-12-09 15:11:19,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 1522 transitions, 17257 flow. Second operand has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:19,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:11:19,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 388 [2023-12-09 15:11:19,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:11:23,572 INFO L124 PetriNetUnfolderBase]: 3238/12416 cut-off events. [2023-12-09 15:11:23,572 INFO L125 PetriNetUnfolderBase]: For 36931/55377 co-relation queries the response was YES. [2023-12-09 15:11:23,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46861 conditions, 12416 events. 3238/12416 cut-off events. For 36931/55377 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 136263 event pairs, 67 based on Foata normal form. 624/12389 useless extension candidates. Maximal degree in co-relation 38518. Up to 2978 conditions per place. [2023-12-09 15:11:23,665 INFO L140 encePairwiseOnDemand]: 354/388 looper letters, 1063 selfloop transitions, 127 changer transitions 150/1559 dead transitions. [2023-12-09 15:11:23,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 1559 transitions, 20398 flow [2023-12-09 15:11:23,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-09 15:11:23,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-12-09 15:11:23,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 7812 transitions. [2023-12-09 15:11:23,672 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5921770770163736 [2023-12-09 15:11:23,672 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 7812 transitions. [2023-12-09 15:11:23,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 7812 transitions. [2023-12-09 15:11:23,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:11:23,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 7812 transitions. [2023-12-09 15:11:23,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 229.76470588235293) internal successors, (7812), 34 states have internal predecessors, (7812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:23,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 388.0) internal successors, (13580), 35 states have internal predecessors, (13580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:23,693 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 388.0) internal successors, (13580), 35 states have internal predecessors, (13580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:23,693 INFO L308 CegarLoopForPetriNet]: 356 programPoint places, 215 predicate places. [2023-12-09 15:11:23,693 INFO L500 AbstractCegarLoop]: Abstraction has has 571 places, 1559 transitions, 20398 flow [2023-12-09 15:11:23,694 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:23,694 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:11:23,694 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:11:23,694 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-09 15:11:23,694 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:11:23,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:11:23,695 INFO L85 PathProgramCache]: Analyzing trace with hash -105889790, now seen corresponding path program 6 times [2023-12-09 15:11:23,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:11:23,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413388082] [2023-12-09 15:11:23,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:11:23,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:11:23,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:11:24,517 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-09 15:11:24,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:11:24,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413388082] [2023-12-09 15:11:24,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413388082] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:11:24,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:11:24,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:11:24,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876721465] [2023-12-09 15:11:24,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:11:24,519 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:11:24,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:11:24,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:11:24,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:11:24,522 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 388 [2023-12-09 15:11:24,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 571 places, 1559 transitions, 20398 flow. Second operand has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:24,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:11:24,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 388 [2023-12-09 15:11:24,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:11:28,318 INFO L124 PetriNetUnfolderBase]: 3233/12924 cut-off events. [2023-12-09 15:11:28,318 INFO L125 PetriNetUnfolderBase]: For 47760/66167 co-relation queries the response was YES. [2023-12-09 15:11:28,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53029 conditions, 12924 events. 3233/12924 cut-off events. For 47760/66167 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 144933 event pairs, 175 based on Foata normal form. 548/12783 useless extension candidates. Maximal degree in co-relation 43788. Up to 2971 conditions per place. [2023-12-09 15:11:28,501 INFO L140 encePairwiseOnDemand]: 354/388 looper letters, 1056 selfloop transitions, 121 changer transitions 175/1571 dead transitions. [2023-12-09 15:11:28,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 603 places, 1571 transitions, 23292 flow [2023-12-09 15:11:28,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-09 15:11:28,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-12-09 15:11:28,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 7589 transitions. [2023-12-09 15:11:28,516 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5927054045610747 [2023-12-09 15:11:28,516 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 7589 transitions. [2023-12-09 15:11:28,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 7589 transitions. [2023-12-09 15:11:28,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:11:28,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 7589 transitions. [2023-12-09 15:11:28,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 229.96969696969697) internal successors, (7589), 33 states have internal predecessors, (7589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:28,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 388.0) internal successors, (13192), 34 states have internal predecessors, (13192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:28,547 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 388.0) internal successors, (13192), 34 states have internal predecessors, (13192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:28,547 INFO L308 CegarLoopForPetriNet]: 356 programPoint places, 247 predicate places. [2023-12-09 15:11:28,548 INFO L500 AbstractCegarLoop]: Abstraction has has 603 places, 1571 transitions, 23292 flow [2023-12-09 15:11:28,548 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:28,548 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:11:28,549 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:11:28,549 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-09 15:11:28,549 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:11:28,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:11:28,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1108062042, now seen corresponding path program 7 times [2023-12-09 15:11:28,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:11:28,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168726785] [2023-12-09 15:11:28,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:11:28,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:11:28,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:11:29,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-09 15:11:29,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:11:29,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168726785] [2023-12-09 15:11:29,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168726785] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:11:29,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:11:29,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:11:29,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567368772] [2023-12-09 15:11:29,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:11:29,405 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:11:29,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:11:29,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:11:29,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:11:29,409 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 388 [2023-12-09 15:11:29,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 1571 transitions, 23292 flow. Second operand has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:29,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:11:29,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 388 [2023-12-09 15:11:29,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:11:33,489 INFO L124 PetriNetUnfolderBase]: 3184/12872 cut-off events. [2023-12-09 15:11:33,489 INFO L125 PetriNetUnfolderBase]: For 59916/82466 co-relation queries the response was YES. [2023-12-09 15:11:33,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58277 conditions, 12872 events. 3184/12872 cut-off events. For 59916/82466 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 145012 event pairs, 160 based on Foata normal form. 620/12808 useless extension candidates. Maximal degree in co-relation 48105. Up to 2994 conditions per place. [2023-12-09 15:11:33,578 INFO L140 encePairwiseOnDemand]: 354/388 looper letters, 1041 selfloop transitions, 130 changer transitions 198/1588 dead transitions. [2023-12-09 15:11:33,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 636 places, 1588 transitions, 26329 flow [2023-12-09 15:11:33,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-09 15:11:33,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-12-09 15:11:33,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 7812 transitions. [2023-12-09 15:11:33,585 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5921770770163736 [2023-12-09 15:11:33,585 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 7812 transitions. [2023-12-09 15:11:33,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 7812 transitions. [2023-12-09 15:11:33,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:11:33,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 7812 transitions. [2023-12-09 15:11:33,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 229.76470588235293) internal successors, (7812), 34 states have internal predecessors, (7812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:33,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 388.0) internal successors, (13580), 35 states have internal predecessors, (13580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:33,607 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 388.0) internal successors, (13580), 35 states have internal predecessors, (13580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:33,608 INFO L308 CegarLoopForPetriNet]: 356 programPoint places, 280 predicate places. [2023-12-09 15:11:33,608 INFO L500 AbstractCegarLoop]: Abstraction has has 636 places, 1588 transitions, 26329 flow [2023-12-09 15:11:33,609 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:33,609 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:11:33,609 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:11:33,609 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-09 15:11:33,609 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:11:33,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:11:33,609 INFO L85 PathProgramCache]: Analyzing trace with hash 2022033838, now seen corresponding path program 8 times [2023-12-09 15:11:33,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:11:33,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232385443] [2023-12-09 15:11:33,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:11:33,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:11:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:11:34,253 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-09 15:11:34,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:11:34,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232385443] [2023-12-09 15:11:34,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232385443] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:11:34,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:11:34,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:11:34,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332039499] [2023-12-09 15:11:34,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:11:34,254 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:11:34,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:11:34,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:11:34,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:11:34,257 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 388 [2023-12-09 15:11:34,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 636 places, 1588 transitions, 26329 flow. Second operand has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:34,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:11:34,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 388 [2023-12-09 15:11:34,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:11:38,285 INFO L124 PetriNetUnfolderBase]: 3193/12527 cut-off events. [2023-12-09 15:11:38,285 INFO L125 PetriNetUnfolderBase]: For 74870/106262 co-relation queries the response was YES. [2023-12-09 15:11:38,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63458 conditions, 12527 events. 3193/12527 cut-off events. For 74870/106262 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 139062 event pairs, 85 based on Foata normal form. 626/12490 useless extension candidates. Maximal degree in co-relation 52419. Up to 2992 conditions per place. [2023-12-09 15:11:38,408 INFO L140 encePairwiseOnDemand]: 354/388 looper letters, 1019 selfloop transitions, 123 changer transitions 224/1585 dead transitions. [2023-12-09 15:11:38,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 1585 transitions, 29001 flow [2023-12-09 15:11:38,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-09 15:11:38,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-12-09 15:11:38,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 7595 transitions. [2023-12-09 15:11:38,413 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5931740081224617 [2023-12-09 15:11:38,413 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 7595 transitions. [2023-12-09 15:11:38,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 7595 transitions. [2023-12-09 15:11:38,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:11:38,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 7595 transitions. [2023-12-09 15:11:38,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 230.15151515151516) internal successors, (7595), 33 states have internal predecessors, (7595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:38,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 388.0) internal successors, (13192), 34 states have internal predecessors, (13192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:38,429 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 388.0) internal successors, (13192), 34 states have internal predecessors, (13192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:38,429 INFO L308 CegarLoopForPetriNet]: 356 programPoint places, 312 predicate places. [2023-12-09 15:11:38,429 INFO L500 AbstractCegarLoop]: Abstraction has has 668 places, 1585 transitions, 29001 flow [2023-12-09 15:11:38,430 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:38,430 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:11:38,430 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:11:38,430 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-09 15:11:38,430 INFO L425 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:11:38,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:11:38,430 INFO L85 PathProgramCache]: Analyzing trace with hash 561669870, now seen corresponding path program 9 times [2023-12-09 15:11:38,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:11:38,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597083636] [2023-12-09 15:11:38,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:11:38,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:11:38,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:11:39,253 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-09 15:11:39,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:11:39,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597083636] [2023-12-09 15:11:39,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597083636] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:11:39,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:11:39,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:11:39,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115283181] [2023-12-09 15:11:39,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:11:39,254 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:11:39,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:11:39,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:11:39,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:11:39,256 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 388 [2023-12-09 15:11:39,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 668 places, 1585 transitions, 29001 flow. Second operand has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:39,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:11:39,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 388 [2023-12-09 15:11:39,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:11:43,754 INFO L124 PetriNetUnfolderBase]: 3315/12992 cut-off events. [2023-12-09 15:11:43,754 INFO L125 PetriNetUnfolderBase]: For 95135/129139 co-relation queries the response was YES. [2023-12-09 15:11:43,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71811 conditions, 12992 events. 3315/12992 cut-off events. For 95135/129139 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 145615 event pairs, 97 based on Foata normal form. 546/12861 useless extension candidates. Maximal degree in co-relation 58853. Up to 3152 conditions per place. [2023-12-09 15:11:43,841 INFO L140 encePairwiseOnDemand]: 354/388 looper letters, 1074 selfloop transitions, 122 changer transitions 251/1666 dead transitions. [2023-12-09 15:11:43,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 698 places, 1666 transitions, 33579 flow [2023-12-09 15:11:43,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-09 15:11:43,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-12-09 15:11:43,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 7148 transitions. [2023-12-09 15:11:43,846 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5942800133022946 [2023-12-09 15:11:43,846 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 7148 transitions. [2023-12-09 15:11:43,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 7148 transitions. [2023-12-09 15:11:43,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:11:43,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 7148 transitions. [2023-12-09 15:11:43,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 230.58064516129033) internal successors, (7148), 31 states have internal predecessors, (7148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:43,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 388.0) internal successors, (12416), 32 states have internal predecessors, (12416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:43,860 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 388.0) internal successors, (12416), 32 states have internal predecessors, (12416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:43,860 INFO L308 CegarLoopForPetriNet]: 356 programPoint places, 342 predicate places. [2023-12-09 15:11:43,860 INFO L500 AbstractCegarLoop]: Abstraction has has 698 places, 1666 transitions, 33579 flow [2023-12-09 15:11:43,862 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:43,862 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:11:43,863 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:11:43,863 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-09 15:11:43,863 INFO L425 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:11:43,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:11:43,863 INFO L85 PathProgramCache]: Analyzing trace with hash -4205822, now seen corresponding path program 10 times [2023-12-09 15:11:43,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:11:43,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112581782] [2023-12-09 15:11:43,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:11:43,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:11:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:11:44,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-09 15:11:44,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:11:44,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112581782] [2023-12-09 15:11:44,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112581782] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:11:44,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:11:44,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:11:44,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595655979] [2023-12-09 15:11:44,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:11:44,878 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:11:44,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:11:44,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:11:44,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:11:44,882 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 388 [2023-12-09 15:11:44,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 698 places, 1666 transitions, 33579 flow. Second operand has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:44,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:11:44,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 388 [2023-12-09 15:11:44,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:11:50,020 INFO L124 PetriNetUnfolderBase]: 3439/13799 cut-off events. [2023-12-09 15:11:50,020 INFO L125 PetriNetUnfolderBase]: For 120303/158522 co-relation queries the response was YES. [2023-12-09 15:11:50,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81130 conditions, 13799 events. 3439/13799 cut-off events. For 120303/158522 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 157696 event pairs, 113 based on Foata normal form. 544/13616 useless extension candidates. Maximal degree in co-relation 65956. Up to 3388 conditions per place. [2023-12-09 15:11:50,138 INFO L140 encePairwiseOnDemand]: 354/388 looper letters, 1138 selfloop transitions, 129 changer transitions 279/1765 dead transitions. [2023-12-09 15:11:50,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 732 places, 1765 transitions, 38936 flow [2023-12-09 15:11:50,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-09 15:11:50,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-12-09 15:11:50,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 8037 transitions. [2023-12-09 15:11:50,143 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5918262150220913 [2023-12-09 15:11:50,143 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 8037 transitions. [2023-12-09 15:11:50,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 8037 transitions. [2023-12-09 15:11:50,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:11:50,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 8037 transitions. [2023-12-09 15:11:50,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 229.62857142857143) internal successors, (8037), 35 states have internal predecessors, (8037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:50,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 388.0) internal successors, (13968), 36 states have internal predecessors, (13968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:50,157 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 388.0) internal successors, (13968), 36 states have internal predecessors, (13968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:50,158 INFO L308 CegarLoopForPetriNet]: 356 programPoint places, 376 predicate places. [2023-12-09 15:11:50,158 INFO L500 AbstractCegarLoop]: Abstraction has has 732 places, 1765 transitions, 38936 flow [2023-12-09 15:11:50,158 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:50,158 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:11:50,158 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:11:50,158 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-09 15:11:50,159 INFO L425 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:11:50,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:11:50,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1265449702, now seen corresponding path program 11 times [2023-12-09 15:11:50,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:11:50,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534111251] [2023-12-09 15:11:50,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:11:50,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:11:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:11:50,959 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-09 15:11:50,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:11:50,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534111251] [2023-12-09 15:11:50,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534111251] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:11:50,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:11:50,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:11:50,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749221198] [2023-12-09 15:11:50,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:11:50,960 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:11:50,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:11:50,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:11:50,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:11:50,963 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 388 [2023-12-09 15:11:50,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 732 places, 1765 transitions, 38936 flow. Second operand has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:50,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:11:50,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 388 [2023-12-09 15:11:50,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:11:55,528 INFO L124 PetriNetUnfolderBase]: 3399/13481 cut-off events. [2023-12-09 15:11:55,528 INFO L125 PetriNetUnfolderBase]: For 145748/198141 co-relation queries the response was YES. [2023-12-09 15:11:55,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86621 conditions, 13481 events. 3399/13481 cut-off events. For 145748/198141 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 153304 event pairs, 146 based on Foata normal form. 552/13338 useless extension candidates. Maximal degree in co-relation 70333. Up to 3411 conditions per place. [2023-12-09 15:11:55,659 INFO L140 encePairwiseOnDemand]: 354/388 looper letters, 1134 selfloop transitions, 127 changer transitions 302/1782 dead transitions. [2023-12-09 15:11:55,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 761 places, 1782 transitions, 42497 flow [2023-12-09 15:11:55,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-09 15:11:55,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-12-09 15:11:55,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 6917 transitions. [2023-12-09 15:11:55,663 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5942439862542955 [2023-12-09 15:11:55,663 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 6917 transitions. [2023-12-09 15:11:55,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 6917 transitions. [2023-12-09 15:11:55,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:11:55,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 6917 transitions. [2023-12-09 15:11:55,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 230.56666666666666) internal successors, (6917), 30 states have internal predecessors, (6917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:55,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 388.0) internal successors, (12028), 31 states have internal predecessors, (12028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:55,678 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 388.0) internal successors, (12028), 31 states have internal predecessors, (12028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:55,678 INFO L308 CegarLoopForPetriNet]: 356 programPoint places, 405 predicate places. [2023-12-09 15:11:55,678 INFO L500 AbstractCegarLoop]: Abstraction has has 761 places, 1782 transitions, 42497 flow [2023-12-09 15:11:55,679 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:55,679 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:11:55,679 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:11:55,679 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-09 15:11:55,679 INFO L425 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:11:55,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:11:55,680 INFO L85 PathProgramCache]: Analyzing trace with hash 106977484, now seen corresponding path program 12 times [2023-12-09 15:11:55,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:11:55,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626058256] [2023-12-09 15:11:55,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:11:55,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:11:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:11:56,520 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-09 15:11:56,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:11:56,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626058256] [2023-12-09 15:11:56,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626058256] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:11:56,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:11:56,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:11:56,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721029099] [2023-12-09 15:11:56,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:11:56,529 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:11:56,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:11:56,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:11:56,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:11:56,531 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 388 [2023-12-09 15:11:56,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 761 places, 1782 transitions, 42497 flow. Second operand has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:11:56,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:11:56,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 388 [2023-12-09 15:11:56,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:12:01,187 INFO L124 PetriNetUnfolderBase]: 3430/13552 cut-off events. [2023-12-09 15:12:01,188 INFO L125 PetriNetUnfolderBase]: For 170920/226368 co-relation queries the response was YES. [2023-12-09 15:12:01,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93040 conditions, 13552 events. 3430/13552 cut-off events. For 170920/226368 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 153996 event pairs, 91 based on Foata normal form. 726/13582 useless extension candidates. Maximal degree in co-relation 75741. Up to 3430 conditions per place. [2023-12-09 15:12:01,358 INFO L140 encePairwiseOnDemand]: 354/388 looper letters, 1111 selfloop transitions, 121 changer transitions 328/1779 dead transitions. [2023-12-09 15:12:01,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 791 places, 1779 transitions, 45533 flow [2023-12-09 15:12:01,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-09 15:12:01,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-12-09 15:12:01,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 7140 transitions. [2023-12-09 15:12:01,385 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5936148985700034 [2023-12-09 15:12:01,385 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 7140 transitions. [2023-12-09 15:12:01,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 7140 transitions. [2023-12-09 15:12:01,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:12:01,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 7140 transitions. [2023-12-09 15:12:01,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 230.32258064516128) internal successors, (7140), 31 states have internal predecessors, (7140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:01,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 388.0) internal successors, (12416), 32 states have internal predecessors, (12416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:01,398 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 388.0) internal successors, (12416), 32 states have internal predecessors, (12416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:01,399 INFO L308 CegarLoopForPetriNet]: 356 programPoint places, 435 predicate places. [2023-12-09 15:12:01,399 INFO L500 AbstractCegarLoop]: Abstraction has has 791 places, 1779 transitions, 45533 flow [2023-12-09 15:12:01,399 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:01,399 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:12:01,399 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:12:01,400 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-09 15:12:01,400 INFO L425 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:12:01,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:12:01,400 INFO L85 PathProgramCache]: Analyzing trace with hash 735444784, now seen corresponding path program 13 times [2023-12-09 15:12:01,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:12:01,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225906941] [2023-12-09 15:12:01,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:12:01,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:12:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:12:02,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-09 15:12:02,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:12:02,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225906941] [2023-12-09 15:12:02,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225906941] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:12:02,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:12:02,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:12:02,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166385421] [2023-12-09 15:12:02,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:12:02,307 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:12:02,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:12:02,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:12:02,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:12:02,309 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 388 [2023-12-09 15:12:02,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 791 places, 1779 transitions, 45533 flow. Second operand has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:02,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:12:02,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 388 [2023-12-09 15:12:02,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:12:07,785 INFO L124 PetriNetUnfolderBase]: 3633/14378 cut-off events. [2023-12-09 15:12:07,786 INFO L125 PetriNetUnfolderBase]: For 207328/264541 co-relation queries the response was YES. [2023-12-09 15:12:08,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104924 conditions, 14378 events. 3633/14378 cut-off events. For 207328/264541 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 165572 event pairs, 156 based on Foata normal form. 548/14200 useless extension candidates. Maximal degree in co-relation 85253. Up to 3696 conditions per place. [2023-12-09 15:12:08,113 INFO L140 encePairwiseOnDemand]: 354/388 looper letters, 1213 selfloop transitions, 127 changer transitions 355/1914 dead transitions. [2023-12-09 15:12:08,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 825 places, 1914 transitions, 52699 flow [2023-12-09 15:12:08,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-09 15:12:08,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-12-09 15:12:08,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 8036 transitions. [2023-12-09 15:12:08,118 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5917525773195876 [2023-12-09 15:12:08,118 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 8036 transitions. [2023-12-09 15:12:08,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 8036 transitions. [2023-12-09 15:12:08,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:12:08,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 8036 transitions. [2023-12-09 15:12:08,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 229.6) internal successors, (8036), 35 states have internal predecessors, (8036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:08,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 388.0) internal successors, (13968), 36 states have internal predecessors, (13968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:08,133 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 388.0) internal successors, (13968), 36 states have internal predecessors, (13968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:08,133 INFO L308 CegarLoopForPetriNet]: 356 programPoint places, 469 predicate places. [2023-12-09 15:12:08,133 INFO L500 AbstractCegarLoop]: Abstraction has has 825 places, 1914 transitions, 52699 flow [2023-12-09 15:12:08,134 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:08,134 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:12:08,134 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:12:08,134 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-09 15:12:08,134 INFO L425 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:12:08,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:12:08,134 INFO L85 PathProgramCache]: Analyzing trace with hash 530239628, now seen corresponding path program 14 times [2023-12-09 15:12:08,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:12:08,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502416727] [2023-12-09 15:12:08,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:12:08,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:12:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:12:08,875 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-09 15:12:08,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:12:08,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502416727] [2023-12-09 15:12:08,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502416727] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:12:08,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:12:08,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:12:08,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202898703] [2023-12-09 15:12:08,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:12:08,878 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:12:08,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:12:08,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:12:08,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:12:08,882 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 388 [2023-12-09 15:12:08,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 825 places, 1914 transitions, 52699 flow. Second operand has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:08,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:12:08,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 388 [2023-12-09 15:12:08,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:12:15,635 INFO L124 PetriNetUnfolderBase]: 3739/14989 cut-off events. [2023-12-09 15:12:15,636 INFO L125 PetriNetUnfolderBase]: For 251431/323376 co-relation queries the response was YES. [2023-12-09 15:12:15,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115861 conditions, 14989 events. 3739/14989 cut-off events. For 251431/323376 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 175145 event pairs, 112 based on Foata normal form. 652/14875 useless extension candidates. Maximal degree in co-relation 92304. Up to 3923 conditions per place. [2023-12-09 15:12:15,790 INFO L140 encePairwiseOnDemand]: 354/388 looper letters, 1284 selfloop transitions, 136 changer transitions 384/2023 dead transitions. [2023-12-09 15:12:15,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 863 places, 2023 transitions, 59781 flow [2023-12-09 15:12:15,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-09 15:12:15,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-12-09 15:12:15,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 8937 transitions. [2023-12-09 15:12:15,795 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5906026962727994 [2023-12-09 15:12:15,795 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 8937 transitions. [2023-12-09 15:12:15,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 8937 transitions. [2023-12-09 15:12:15,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:12:15,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 8937 transitions. [2023-12-09 15:12:15,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 229.15384615384616) internal successors, (8937), 39 states have internal predecessors, (8937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:15,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 388.0) internal successors, (15520), 40 states have internal predecessors, (15520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:15,812 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 388.0) internal successors, (15520), 40 states have internal predecessors, (15520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:15,813 INFO L308 CegarLoopForPetriNet]: 356 programPoint places, 507 predicate places. [2023-12-09 15:12:15,813 INFO L500 AbstractCegarLoop]: Abstraction has has 863 places, 2023 transitions, 59781 flow [2023-12-09 15:12:15,813 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:15,813 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:12:15,813 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:12:15,814 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-09 15:12:15,814 INFO L425 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:12:15,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:12:15,814 INFO L85 PathProgramCache]: Analyzing trace with hash 109638574, now seen corresponding path program 15 times [2023-12-09 15:12:15,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:12:15,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620850003] [2023-12-09 15:12:15,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:12:15,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:12:15,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:12:16,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-09 15:12:16,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:12:16,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620850003] [2023-12-09 15:12:16,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620850003] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:12:16,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:12:16,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:12:16,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50120937] [2023-12-09 15:12:16,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:12:16,528 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:12:16,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:12:16,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:12:16,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:12:16,530 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 388 [2023-12-09 15:12:16,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 863 places, 2023 transitions, 59781 flow. Second operand has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:16,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:12:16,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 388 [2023-12-09 15:12:16,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:12:23,328 INFO L124 PetriNetUnfolderBase]: 3757/15648 cut-off events. [2023-12-09 15:12:23,329 INFO L125 PetriNetUnfolderBase]: For 283863/344866 co-relation queries the response was YES. [2023-12-09 15:12:23,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123962 conditions, 15648 events. 3757/15648 cut-off events. For 283863/344866 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 186034 event pairs, 219 based on Foata normal form. 562/15400 useless extension candidates. Maximal degree in co-relation 98823. Up to 3968 conditions per place. [2023-12-09 15:12:23,487 INFO L140 encePairwiseOnDemand]: 354/388 looper letters, 1287 selfloop transitions, 131 changer transitions 410/2047 dead transitions. [2023-12-09 15:12:23,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 896 places, 2047 transitions, 64233 flow [2023-12-09 15:12:23,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-09 15:12:23,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-12-09 15:12:23,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 7821 transitions. [2023-12-09 15:12:23,505 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5928593086719224 [2023-12-09 15:12:23,505 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 7821 transitions. [2023-12-09 15:12:23,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 7821 transitions. [2023-12-09 15:12:23,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:12:23,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 7821 transitions. [2023-12-09 15:12:23,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 230.02941176470588) internal successors, (7821), 34 states have internal predecessors, (7821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:23,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 388.0) internal successors, (13580), 35 states have internal predecessors, (13580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:23,522 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 388.0) internal successors, (13580), 35 states have internal predecessors, (13580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:23,522 INFO L308 CegarLoopForPetriNet]: 356 programPoint places, 540 predicate places. [2023-12-09 15:12:23,522 INFO L500 AbstractCegarLoop]: Abstraction has has 896 places, 2047 transitions, 64233 flow [2023-12-09 15:12:23,523 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:23,523 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:12:23,523 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:12:23,523 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-09 15:12:23,523 INFO L425 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:12:23,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:12:23,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1549043872, now seen corresponding path program 16 times [2023-12-09 15:12:23,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:12:23,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395211251] [2023-12-09 15:12:23,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:12:23,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:12:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:12:24,482 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-09 15:12:24,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:12:24,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395211251] [2023-12-09 15:12:24,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395211251] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:12:24,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:12:24,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:12:24,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200327487] [2023-12-09 15:12:24,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:12:24,483 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:12:24,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:12:24,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:12:24,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:12:24,486 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 388 [2023-12-09 15:12:24,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 896 places, 2047 transitions, 64233 flow. Second operand has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:24,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:12:24,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 388 [2023-12-09 15:12:24,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:12:31,076 INFO L124 PetriNetUnfolderBase]: 3761/15356 cut-off events. [2023-12-09 15:12:31,077 INFO L125 PetriNetUnfolderBase]: For 325792/405233 co-relation queries the response was YES. [2023-12-09 15:12:31,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130556 conditions, 15356 events. 3761/15356 cut-off events. For 325792/405233 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 181202 event pairs, 75 based on Foata normal form. 528/15103 useless extension candidates. Maximal degree in co-relation 103964. Up to 3980 conditions per place. [2023-12-09 15:12:31,252 INFO L140 encePairwiseOnDemand]: 354/388 looper letters, 1280 selfloop transitions, 130 changer transitions 435/2064 dead transitions. [2023-12-09 15:12:31,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 926 places, 2064 transitions, 68528 flow [2023-12-09 15:12:31,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-09 15:12:31,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-12-09 15:12:31,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 7144 transitions. [2023-12-09 15:12:31,256 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.593947455936149 [2023-12-09 15:12:31,256 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 7144 transitions. [2023-12-09 15:12:31,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 7144 transitions. [2023-12-09 15:12:31,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:12:31,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 7144 transitions. [2023-12-09 15:12:31,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 230.4516129032258) internal successors, (7144), 31 states have internal predecessors, (7144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:31,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 388.0) internal successors, (12416), 32 states have internal predecessors, (12416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:31,269 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 388.0) internal successors, (12416), 32 states have internal predecessors, (12416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:31,270 INFO L308 CegarLoopForPetriNet]: 356 programPoint places, 570 predicate places. [2023-12-09 15:12:31,270 INFO L500 AbstractCegarLoop]: Abstraction has has 926 places, 2064 transitions, 68528 flow [2023-12-09 15:12:31,270 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:31,270 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:12:31,270 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:12:31,270 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-09 15:12:31,271 INFO L425 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:12:31,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:12:31,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1575526370, now seen corresponding path program 17 times [2023-12-09 15:12:31,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:12:31,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516194634] [2023-12-09 15:12:31,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:12:31,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:12:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:12:32,224 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-09 15:12:32,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:12:32,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516194634] [2023-12-09 15:12:32,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516194634] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:12:32,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:12:32,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:12:32,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147720773] [2023-12-09 15:12:32,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:12:32,225 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:12:32,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:12:32,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:12:32,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:12:32,227 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 388 [2023-12-09 15:12:32,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 926 places, 2064 transitions, 68528 flow. Second operand has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:32,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:12:32,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 388 [2023-12-09 15:12:32,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:12:39,133 INFO L124 PetriNetUnfolderBase]: 3753/15602 cut-off events. [2023-12-09 15:12:39,133 INFO L125 PetriNetUnfolderBase]: For 352062/423199 co-relation queries the response was YES. [2023-12-09 15:12:39,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137333 conditions, 15602 events. 3753/15602 cut-off events. For 352062/423199 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 185624 event pairs, 199 based on Foata normal form. 570/15369 useless extension candidates. Maximal degree in co-relation 109543. Up to 3976 conditions per place. [2023-12-09 15:12:39,304 INFO L140 encePairwiseOnDemand]: 354/388 looper letters, 1260 selfloop transitions, 123 changer transitions 459/2061 dead transitions. [2023-12-09 15:12:39,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 955 places, 2061 transitions, 72098 flow [2023-12-09 15:12:39,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-09 15:12:39,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-12-09 15:12:39,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 6921 transitions. [2023-12-09 15:12:39,308 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5945876288659794 [2023-12-09 15:12:39,308 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 6921 transitions. [2023-12-09 15:12:39,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 6921 transitions. [2023-12-09 15:12:39,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:12:39,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 6921 transitions. [2023-12-09 15:12:39,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 230.7) internal successors, (6921), 30 states have internal predecessors, (6921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:39,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 388.0) internal successors, (12028), 31 states have internal predecessors, (12028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:39,319 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 388.0) internal successors, (12028), 31 states have internal predecessors, (12028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:39,320 INFO L308 CegarLoopForPetriNet]: 356 programPoint places, 599 predicate places. [2023-12-09 15:12:39,320 INFO L500 AbstractCegarLoop]: Abstraction has has 955 places, 2061 transitions, 72098 flow [2023-12-09 15:12:39,320 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:39,321 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:12:39,324 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:12:39,325 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-09 15:12:39,325 INFO L425 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:12:39,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:12:39,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1141334722, now seen corresponding path program 18 times [2023-12-09 15:12:39,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:12:39,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143596020] [2023-12-09 15:12:39,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:12:39,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:12:39,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:12:40,371 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-09 15:12:40,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:12:40,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143596020] [2023-12-09 15:12:40,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143596020] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:12:40,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:12:40,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:12:40,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027239626] [2023-12-09 15:12:40,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:12:40,372 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:12:40,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:12:40,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:12:40,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:12:40,374 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 388 [2023-12-09 15:12:40,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 955 places, 2061 transitions, 72098 flow. Second operand has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:40,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:12:40,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 388 [2023-12-09 15:12:40,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:12:47,087 INFO L124 PetriNetUnfolderBase]: 3872/15867 cut-off events. [2023-12-09 15:12:47,088 INFO L125 PetriNetUnfolderBase]: For 423704/511620 co-relation queries the response was YES. [2023-12-09 15:12:47,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148888 conditions, 15867 events. 3872/15867 cut-off events. For 423704/511620 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 188752 event pairs, 170 based on Foata normal form. 339/15408 useless extension candidates. Maximal degree in co-relation 117747. Up to 4375 conditions per place. [2023-12-09 15:12:47,261 INFO L140 encePairwiseOnDemand]: 354/388 looper letters, 1351 selfloop transitions, 107 changer transitions 486/2163 dead transitions. [2023-12-09 15:12:47,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 981 places, 2163 transitions, 79937 flow [2023-12-09 15:12:47,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-09 15:12:47,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-12-09 15:12:47,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 6226 transitions. [2023-12-09 15:12:47,265 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5943108056510118 [2023-12-09 15:12:47,265 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 6226 transitions. [2023-12-09 15:12:47,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 6226 transitions. [2023-12-09 15:12:47,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:12:47,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 6226 transitions. [2023-12-09 15:12:47,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 230.59259259259258) internal successors, (6226), 27 states have internal predecessors, (6226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:47,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 388.0) internal successors, (10864), 28 states have internal predecessors, (10864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:47,275 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 388.0) internal successors, (10864), 28 states have internal predecessors, (10864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:47,275 INFO L308 CegarLoopForPetriNet]: 356 programPoint places, 625 predicate places. [2023-12-09 15:12:47,275 INFO L500 AbstractCegarLoop]: Abstraction has has 981 places, 2163 transitions, 79937 flow [2023-12-09 15:12:47,276 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:47,276 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:12:47,276 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:12:47,276 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-09 15:12:47,276 INFO L425 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:12:47,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:12:47,277 INFO L85 PathProgramCache]: Analyzing trace with hash 35506898, now seen corresponding path program 19 times [2023-12-09 15:12:47,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:12:47,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535933043] [2023-12-09 15:12:47,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:12:47,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:12:47,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:12:47,980 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-09 15:12:47,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:12:47,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535933043] [2023-12-09 15:12:47,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535933043] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:12:47,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:12:47,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:12:47,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634469315] [2023-12-09 15:12:47,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:12:47,981 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:12:47,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:12:47,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:12:47,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:12:48,032 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 388 [2023-12-09 15:12:48,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 981 places, 2163 transitions, 79937 flow. Second operand has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:48,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:12:48,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 388 [2023-12-09 15:12:48,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:12:55,851 INFO L124 PetriNetUnfolderBase]: 4039/16850 cut-off events. [2023-12-09 15:12:55,851 INFO L125 PetriNetUnfolderBase]: For 487547/586609 co-relation queries the response was YES. [2023-12-09 15:12:55,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162978 conditions, 16850 events. 4039/16850 cut-off events. For 487547/586609 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 203764 event pairs, 139 based on Foata normal form. 274/16252 useless extension candidates. Maximal degree in co-relation 128393. Up to 4684 conditions per place. [2023-12-09 15:12:56,040 INFO L140 encePairwiseOnDemand]: 354/388 looper letters, 1443 selfloop transitions, 129 changer transitions 514/2305 dead transitions. [2023-12-09 15:12:56,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1010 places, 2305 transitions, 89829 flow [2023-12-09 15:12:56,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-09 15:12:56,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-12-09 15:12:56,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 6892 transitions. [2023-12-09 15:12:56,044 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5920962199312715 [2023-12-09 15:12:56,044 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 6892 transitions. [2023-12-09 15:12:56,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 6892 transitions. [2023-12-09 15:12:56,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:12:56,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 6892 transitions. [2023-12-09 15:12:56,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 229.73333333333332) internal successors, (6892), 30 states have internal predecessors, (6892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:56,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 388.0) internal successors, (12028), 31 states have internal predecessors, (12028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:56,055 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 388.0) internal successors, (12028), 31 states have internal predecessors, (12028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:56,055 INFO L308 CegarLoopForPetriNet]: 356 programPoint places, 654 predicate places. [2023-12-09 15:12:56,055 INFO L500 AbstractCegarLoop]: Abstraction has has 1010 places, 2305 transitions, 89829 flow [2023-12-09 15:12:56,055 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:56,055 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:12:56,056 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:12:56,056 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-09 15:12:56,056 INFO L425 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:12:56,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:12:56,056 INFO L85 PathProgramCache]: Analyzing trace with hash 646544464, now seen corresponding path program 20 times [2023-12-09 15:12:56,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:12:56,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566758515] [2023-12-09 15:12:56,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:12:56,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:12:56,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:12:56,972 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-09 15:12:56,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:12:56,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566758515] [2023-12-09 15:12:56,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566758515] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:12:56,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:12:56,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:12:56,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923544505] [2023-12-09 15:12:56,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:12:56,973 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:12:56,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:12:56,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:12:56,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:12:56,976 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 388 [2023-12-09 15:12:56,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1010 places, 2305 transitions, 89829 flow. Second operand has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:12:56,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:12:56,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 388 [2023-12-09 15:12:56,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:13:06,233 INFO L124 PetriNetUnfolderBase]: 4144/17292 cut-off events. [2023-12-09 15:13:06,233 INFO L125 PetriNetUnfolderBase]: For 572319/687096 co-relation queries the response was YES. [2023-12-09 15:13:06,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176800 conditions, 17292 events. 4144/17292 cut-off events. For 572319/687096 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 210926 event pairs, 161 based on Foata normal form. 554/16983 useless extension candidates. Maximal degree in co-relation 137129. Up to 4966 conditions per place. [2023-12-09 15:13:06,505 INFO L140 encePairwiseOnDemand]: 354/388 looper letters, 1531 selfloop transitions, 131 changer transitions 543/2424 dead transitions. [2023-12-09 15:13:06,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1044 places, 2424 transitions, 99436 flow [2023-12-09 15:13:06,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-09 15:13:06,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-12-09 15:13:06,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 8020 transitions. [2023-12-09 15:13:06,514 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5905743740795287 [2023-12-09 15:13:06,514 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 8020 transitions. [2023-12-09 15:13:06,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 8020 transitions. [2023-12-09 15:13:06,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:13:06,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 8020 transitions. [2023-12-09 15:13:06,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 229.14285714285714) internal successors, (8020), 35 states have internal predecessors, (8020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:13:06,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 388.0) internal successors, (13968), 36 states have internal predecessors, (13968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:13:06,526 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 388.0) internal successors, (13968), 36 states have internal predecessors, (13968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:13:06,527 INFO L308 CegarLoopForPetriNet]: 356 programPoint places, 688 predicate places. [2023-12-09 15:13:06,527 INFO L500 AbstractCegarLoop]: Abstraction has has 1044 places, 2424 transitions, 99436 flow [2023-12-09 15:13:06,527 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:13:06,527 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:13:06,527 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:13:06,527 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-09 15:13:06,527 INFO L425 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:13:06,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:13:06,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1089580910, now seen corresponding path program 21 times [2023-12-09 15:13:06,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:13:06,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399139234] [2023-12-09 15:13:06,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:13:06,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:13:06,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:13:07,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-09 15:13:07,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:13:07,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399139234] [2023-12-09 15:13:07,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399139234] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:13:07,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:13:07,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:13:07,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960036044] [2023-12-09 15:13:07,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:13:07,238 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:13:07,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:13:07,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:13:07,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:13:07,240 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 388 [2023-12-09 15:13:07,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1044 places, 2424 transitions, 99436 flow. Second operand has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:13:07,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:13:07,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 388 [2023-12-09 15:13:07,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:13:16,180 INFO L124 PetriNetUnfolderBase]: 4218/17525 cut-off events. [2023-12-09 15:13:16,181 INFO L125 PetriNetUnfolderBase]: For 629323/752727 co-relation queries the response was YES. [2023-12-09 15:13:16,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186503 conditions, 17525 events. 4218/17525 cut-off events. For 629323/752727 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 213707 event pairs, 147 based on Foata normal form. 384/17030 useless extension candidates. Maximal degree in co-relation 144919. Up to 5043 conditions per place. [2023-12-09 15:13:16,410 INFO L140 encePairwiseOnDemand]: 354/388 looper letters, 1521 selfloop transitions, 135 changer transitions 566/2441 dead transitions. [2023-12-09 15:13:16,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1069 places, 2441 transitions, 104655 flow [2023-12-09 15:13:16,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-09 15:13:16,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-12-09 15:13:16,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 5992 transitions. [2023-12-09 15:13:16,413 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5939730372720063 [2023-12-09 15:13:16,413 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 5992 transitions. [2023-12-09 15:13:16,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 5992 transitions. [2023-12-09 15:13:16,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:13:16,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 5992 transitions. [2023-12-09 15:13:16,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 230.46153846153845) internal successors, (5992), 26 states have internal predecessors, (5992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:13:16,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 388.0) internal successors, (10476), 27 states have internal predecessors, (10476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:13:16,423 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 388.0) internal successors, (10476), 27 states have internal predecessors, (10476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:13:16,423 INFO L308 CegarLoopForPetriNet]: 356 programPoint places, 713 predicate places. [2023-12-09 15:13:16,423 INFO L500 AbstractCegarLoop]: Abstraction has has 1069 places, 2441 transitions, 104655 flow [2023-12-09 15:13:16,424 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:13:16,424 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:13:16,424 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:13:16,424 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-09 15:13:16,424 INFO L425 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:13:16,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:13:16,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1620309566, now seen corresponding path program 22 times [2023-12-09 15:13:16,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:13:16,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070083638] [2023-12-09 15:13:16,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:13:16,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:13:16,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:13:17,177 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-09 15:13:17,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:13:17,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070083638] [2023-12-09 15:13:17,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070083638] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:13:17,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:13:17,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:13:17,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228850551] [2023-12-09 15:13:17,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:13:17,178 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:13:17,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:13:17,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:13:17,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:13:17,180 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 388 [2023-12-09 15:13:17,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1069 places, 2441 transitions, 104655 flow. Second operand has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:13:17,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:13:17,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 388 [2023-12-09 15:13:17,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:13:26,447 INFO L124 PetriNetUnfolderBase]: 4206/17416 cut-off events. [2023-12-09 15:13:26,447 INFO L125 PetriNetUnfolderBase]: For 697020/837830 co-relation queries the response was YES. [2023-12-09 15:13:26,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193808 conditions, 17416 events. 4206/17416 cut-off events. For 697020/837830 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 212068 event pairs, 111 based on Foata normal form. 586/17152 useless extension candidates. Maximal degree in co-relation 150646. Up to 5036 conditions per place. [2023-12-09 15:13:26,675 INFO L140 encePairwiseOnDemand]: 354/388 looper letters, 1499 selfloop transitions, 128 changer transitions 592/2438 dead transitions. [2023-12-09 15:13:26,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1095 places, 2438 transitions, 108949 flow [2023-12-09 15:13:26,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-09 15:13:26,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-12-09 15:13:26,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 6215 transitions. [2023-12-09 15:13:26,679 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5932607865597557 [2023-12-09 15:13:26,679 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 6215 transitions. [2023-12-09 15:13:26,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 6215 transitions. [2023-12-09 15:13:26,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:13:26,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 6215 transitions. [2023-12-09 15:13:26,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 230.1851851851852) internal successors, (6215), 27 states have internal predecessors, (6215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:13:26,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 388.0) internal successors, (10864), 28 states have internal predecessors, (10864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:13:26,688 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 388.0) internal successors, (10864), 28 states have internal predecessors, (10864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:13:26,689 INFO L308 CegarLoopForPetriNet]: 356 programPoint places, 739 predicate places. [2023-12-09 15:13:26,689 INFO L500 AbstractCegarLoop]: Abstraction has has 1095 places, 2438 transitions, 108949 flow [2023-12-09 15:13:26,689 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:13:26,689 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:13:26,689 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:13:26,689 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-09 15:13:26,689 INFO L425 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:13:26,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:13:26,690 INFO L85 PathProgramCache]: Analyzing trace with hash -834749414, now seen corresponding path program 23 times [2023-12-09 15:13:26,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:13:26,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805418550] [2023-12-09 15:13:26,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:13:26,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:13:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:13:27,399 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-09 15:13:27,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:13:27,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805418550] [2023-12-09 15:13:27,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805418550] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:13:27,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:13:27,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:13:27,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215266149] [2023-12-09 15:13:27,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:13:27,401 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:13:27,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:13:27,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:13:27,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:13:27,454 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 388 [2023-12-09 15:13:27,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1095 places, 2438 transitions, 108949 flow. Second operand has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:13:27,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:13:27,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 388 [2023-12-09 15:13:27,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:13:37,755 INFO L124 PetriNetUnfolderBase]: 4220/17722 cut-off events. [2023-12-09 15:13:37,755 INFO L125 PetriNetUnfolderBase]: For 754416/897265 co-relation queries the response was YES. [2023-12-09 15:13:37,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201494 conditions, 17722 events. 4220/17722 cut-off events. For 754416/897265 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 217111 event pairs, 119 based on Foata normal form. 296/17110 useless extension candidates. Maximal degree in co-relation 156737. Up to 5031 conditions per place. [2023-12-09 15:13:38,114 INFO L140 encePairwiseOnDemand]: 354/388 looper letters, 1474 selfloop transitions, 125 changer transitions 617/2435 dead transitions. [2023-12-09 15:13:38,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1125 places, 2435 transitions, 113231 flow [2023-12-09 15:13:38,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-09 15:13:38,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-12-09 15:13:38,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 7115 transitions. [2023-12-09 15:13:38,118 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5915364150315929 [2023-12-09 15:13:38,118 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 7115 transitions. [2023-12-09 15:13:38,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 7115 transitions. [2023-12-09 15:13:38,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:13:38,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 7115 transitions. [2023-12-09 15:13:38,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 229.51612903225808) internal successors, (7115), 31 states have internal predecessors, (7115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:13:38,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 388.0) internal successors, (12416), 32 states have internal predecessors, (12416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:13:38,130 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 388.0) internal successors, (12416), 32 states have internal predecessors, (12416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:13:38,132 INFO L308 CegarLoopForPetriNet]: 356 programPoint places, 769 predicate places. [2023-12-09 15:13:38,132 INFO L500 AbstractCegarLoop]: Abstraction has has 1125 places, 2435 transitions, 113231 flow [2023-12-09 15:13:38,132 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:13:38,132 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:13:38,133 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:13:38,133 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-09 15:13:38,133 INFO L425 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:13:38,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:13:38,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1510005418, now seen corresponding path program 24 times [2023-12-09 15:13:38,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:13:38,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297404466] [2023-12-09 15:13:38,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:13:38,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:13:38,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:13:38,979 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-09 15:13:38,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:13:38,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297404466] [2023-12-09 15:13:38,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297404466] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:13:38,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:13:38,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:13:38,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798189781] [2023-12-09 15:13:38,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:13:38,980 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:13:38,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:13:38,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:13:38,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:13:38,983 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 388 [2023-12-09 15:13:38,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1125 places, 2435 transitions, 113231 flow. Second operand has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:13:38,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:13:38,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 388 [2023-12-09 15:13:38,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:13:50,865 INFO L124 PetriNetUnfolderBase]: 4400/18703 cut-off events. [2023-12-09 15:13:50,865 INFO L125 PetriNetUnfolderBase]: For 862218/1002970 co-relation queries the response was YES. [2023-12-09 15:13:50,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219637 conditions, 18703 events. 4400/18703 cut-off events. For 862218/1002970 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 232544 event pairs, 162 based on Foata normal form. 356/18105 useless extension candidates. Maximal degree in co-relation 171687. Up to 5391 conditions per place. [2023-12-09 15:13:51,094 INFO L140 encePairwiseOnDemand]: 354/388 looper letters, 1547 selfloop transitions, 176 changer transitions 646/2588 dead transitions. [2023-12-09 15:13:51,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1157 places, 2588 transitions, 125785 flow [2023-12-09 15:13:51,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-09 15:13:51,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-12-09 15:13:51,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 7584 transitions. [2023-12-09 15:13:51,098 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5923149015932521 [2023-12-09 15:13:51,098 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 7584 transitions. [2023-12-09 15:13:51,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 7584 transitions. [2023-12-09 15:13:51,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:13:51,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 7584 transitions. [2023-12-09 15:13:51,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 229.8181818181818) internal successors, (7584), 33 states have internal predecessors, (7584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:13:51,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 388.0) internal successors, (13192), 34 states have internal predecessors, (13192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:13:51,109 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 388.0) internal successors, (13192), 34 states have internal predecessors, (13192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:13:51,110 INFO L308 CegarLoopForPetriNet]: 356 programPoint places, 801 predicate places. [2023-12-09 15:13:51,110 INFO L500 AbstractCegarLoop]: Abstraction has has 1157 places, 2588 transitions, 125785 flow [2023-12-09 15:13:51,110 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:13:51,110 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:13:51,111 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:13:51,111 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-09 15:13:51,111 INFO L425 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:13:51,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:13:51,111 INFO L85 PathProgramCache]: Analyzing trace with hash 472449962, now seen corresponding path program 25 times [2023-12-09 15:13:51,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:13:51,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815062507] [2023-12-09 15:13:51,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:13:51,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:13:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:13:52,335 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-09 15:13:52,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:13:52,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815062507] [2023-12-09 15:13:52,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815062507] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:13:52,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:13:52,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:13:52,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332913699] [2023-12-09 15:13:52,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:13:52,337 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:13:52,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:13:52,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:13:52,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:13:52,340 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 388 [2023-12-09 15:13:52,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1157 places, 2588 transitions, 125785 flow. Second operand has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:13:52,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:13:52,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 388 [2023-12-09 15:13:52,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:06,126 INFO L124 PetriNetUnfolderBase]: 4330/18284 cut-off events. [2023-12-09 15:14:06,126 INFO L125 PetriNetUnfolderBase]: For 899521/1051655 co-relation queries the response was YES. [2023-12-09 15:14:06,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225451 conditions, 18284 events. 4330/18284 cut-off events. For 899521/1051655 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 226418 event pairs, 238 based on Foata normal form. 361/17734 useless extension candidates. Maximal degree in co-relation 175853. Up to 5339 conditions per place. [2023-12-09 15:14:06,531 INFO L140 encePairwiseOnDemand]: 354/388 looper letters, 1527 selfloop transitions, 168 changer transitions 671/2585 dead transitions. [2023-12-09 15:14:06,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1189 places, 2585 transitions, 130355 flow [2023-12-09 15:14:06,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-09 15:14:06,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-12-09 15:14:06,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 7551 transitions. [2023-12-09 15:14:06,535 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5897375820056232 [2023-12-09 15:14:06,535 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 7551 transitions. [2023-12-09 15:14:06,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 7551 transitions. [2023-12-09 15:14:06,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:06,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 7551 transitions. [2023-12-09 15:14:06,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 228.8181818181818) internal successors, (7551), 33 states have internal predecessors, (7551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:06,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 388.0) internal successors, (13192), 34 states have internal predecessors, (13192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:06,547 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 388.0) internal successors, (13192), 34 states have internal predecessors, (13192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:06,547 INFO L308 CegarLoopForPetriNet]: 356 programPoint places, 833 predicate places. [2023-12-09 15:14:06,547 INFO L500 AbstractCegarLoop]: Abstraction has has 1189 places, 2585 transitions, 130355 flow [2023-12-09 15:14:06,548 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:06,548 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:06,548 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:14:06,548 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-09 15:14:06,548 INFO L425 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:14:06,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:06,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1524056938, now seen corresponding path program 26 times [2023-12-09 15:14:06,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:06,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312345260] [2023-12-09 15:14:06,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:06,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:07,326 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-09 15:14:07,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:07,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312345260] [2023-12-09 15:14:07,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312345260] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:14:07,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:14:07,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:14:07,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96476051] [2023-12-09 15:14:07,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:07,327 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:14:07,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:07,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:14:07,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:14:07,330 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 388 [2023-12-09 15:14:07,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1189 places, 2585 transitions, 130355 flow. Second operand has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:07,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:07,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 388 [2023-12-09 15:14:07,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:22,145 INFO L124 PetriNetUnfolderBase]: 4453/18738 cut-off events. [2023-12-09 15:14:22,145 INFO L125 PetriNetUnfolderBase]: For 1003561/1170069 co-relation queries the response was YES. [2023-12-09 15:14:22,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240141 conditions, 18738 events. 4453/18738 cut-off events. For 1003561/1170069 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 233328 event pairs, 146 based on Foata normal form. 386/18190 useless extension candidates. Maximal degree in co-relation 188222. Up to 5559 conditions per place. [2023-12-09 15:14:22,447 INFO L140 encePairwiseOnDemand]: 354/388 looper letters, 1571 selfloop transitions, 184 changer transitions 699/2673 dead transitions. [2023-12-09 15:14:22,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1217 places, 2673 transitions, 140123 flow [2023-12-09 15:14:22,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-09 15:14:22,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-12-09 15:14:22,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 6676 transitions. [2023-12-09 15:14:22,451 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5933167436900106 [2023-12-09 15:14:22,451 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 6676 transitions. [2023-12-09 15:14:22,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 6676 transitions. [2023-12-09 15:14:22,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:22,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 6676 transitions. [2023-12-09 15:14:22,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 230.20689655172413) internal successors, (6676), 29 states have internal predecessors, (6676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:22,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 388.0) internal successors, (11640), 30 states have internal predecessors, (11640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:22,462 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 388.0) internal successors, (11640), 30 states have internal predecessors, (11640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:22,462 INFO L308 CegarLoopForPetriNet]: 356 programPoint places, 861 predicate places. [2023-12-09 15:14:22,462 INFO L500 AbstractCegarLoop]: Abstraction has has 1217 places, 2673 transitions, 140123 flow [2023-12-09 15:14:22,463 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:22,463 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:22,463 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:14:22,463 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-09 15:14:22,463 INFO L425 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:14:22,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:22,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1302140866, now seen corresponding path program 27 times [2023-12-09 15:14:22,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:22,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349107811] [2023-12-09 15:14:22,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:22,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:23,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-09 15:14:23,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:23,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349107811] [2023-12-09 15:14:23,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349107811] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:14:23,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:14:23,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:14:23,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979567604] [2023-12-09 15:14:23,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:23,316 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:14:23,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:23,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:14:23,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:14:23,318 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 388 [2023-12-09 15:14:23,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1217 places, 2673 transitions, 140123 flow. Second operand has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:23,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:23,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 388 [2023-12-09 15:14:23,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:37,191 INFO L124 PetriNetUnfolderBase]: 4464/18929 cut-off events. [2023-12-09 15:14:37,192 INFO L125 PetriNetUnfolderBase]: For 1086456/1261908 co-relation queries the response was YES. [2023-12-09 15:14:37,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249227 conditions, 18929 events. 4464/18929 cut-off events. For 1086456/1261908 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 236727 event pairs, 143 based on Foata normal form. 404/18397 useless extension candidates. Maximal degree in co-relation 195361. Up to 5582 conditions per place. [2023-12-09 15:14:37,485 INFO L140 encePairwiseOnDemand]: 354/388 looper letters, 1562 selfloop transitions, 185 changer transitions 724/2690 dead transitions. [2023-12-09 15:14:37,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1242 places, 2690 transitions, 146044 flow [2023-12-09 15:14:37,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-09 15:14:37,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-12-09 15:14:37,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 5999 transitions. [2023-12-09 15:14:37,488 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5946669310071372 [2023-12-09 15:14:37,488 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 5999 transitions. [2023-12-09 15:14:37,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 5999 transitions. [2023-12-09 15:14:37,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:37,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 5999 transitions. [2023-12-09 15:14:37,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 230.73076923076923) internal successors, (5999), 26 states have internal predecessors, (5999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:37,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 388.0) internal successors, (10476), 27 states have internal predecessors, (10476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:37,498 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 388.0) internal successors, (10476), 27 states have internal predecessors, (10476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:37,498 INFO L308 CegarLoopForPetriNet]: 356 programPoint places, 886 predicate places. [2023-12-09 15:14:37,499 INFO L500 AbstractCegarLoop]: Abstraction has has 1242 places, 2690 transitions, 146044 flow [2023-12-09 15:14:37,499 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:37,499 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:37,500 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:14:37,500 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-09 15:14:37,500 INFO L425 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:14:37,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:37,500 INFO L85 PathProgramCache]: Analyzing trace with hash 428611260, now seen corresponding path program 28 times [2023-12-09 15:14:37,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:37,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266638963] [2023-12-09 15:14:37,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:37,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:37,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:38,538 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-09 15:14:38,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:38,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266638963] [2023-12-09 15:14:38,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266638963] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:14:38,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:14:38,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:14:38,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023446304] [2023-12-09 15:14:38,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:38,539 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:14:38,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:38,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:14:38,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:14:38,541 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 388 [2023-12-09 15:14:38,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1242 places, 2690 transitions, 146044 flow. Second operand has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:38,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:38,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 388 [2023-12-09 15:14:38,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:52,271 INFO L124 PetriNetUnfolderBase]: 4453/19099 cut-off events. [2023-12-09 15:14:52,271 INFO L125 PetriNetUnfolderBase]: For 1166321/1346369 co-relation queries the response was YES. [2023-12-09 15:14:52,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256877 conditions, 19099 events. 4453/19099 cut-off events. For 1166321/1346369 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 239770 event pairs, 201 based on Foata normal form. 282/18413 useless extension candidates. Maximal degree in co-relation 201351. Up to 5568 conditions per place. [2023-12-09 15:14:52,584 INFO L140 encePairwiseOnDemand]: 354/388 looper letters, 1543 selfloop transitions, 176 changer transitions 749/2687 dead transitions. [2023-12-09 15:14:52,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1271 places, 2687 transitions, 150800 flow [2023-12-09 15:14:52,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-09 15:14:52,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-12-09 15:14:52,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 6899 transitions. [2023-12-09 15:14:52,588 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5926975945017182 [2023-12-09 15:14:52,588 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 6899 transitions. [2023-12-09 15:14:52,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 6899 transitions. [2023-12-09 15:14:52,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:52,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 6899 transitions. [2023-12-09 15:14:52,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 229.96666666666667) internal successors, (6899), 30 states have internal predecessors, (6899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:52,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 388.0) internal successors, (12028), 31 states have internal predecessors, (12028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:52,598 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 388.0) internal successors, (12028), 31 states have internal predecessors, (12028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:52,599 INFO L308 CegarLoopForPetriNet]: 356 programPoint places, 915 predicate places. [2023-12-09 15:14:52,599 INFO L500 AbstractCegarLoop]: Abstraction has has 1271 places, 2687 transitions, 150800 flow [2023-12-09 15:14:52,599 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:52,599 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:52,600 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:14:52,600 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-09 15:14:52,600 INFO L425 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:14:52,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:52,600 INFO L85 PathProgramCache]: Analyzing trace with hash 501903532, now seen corresponding path program 29 times [2023-12-09 15:14:52,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:52,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907893426] [2023-12-09 15:14:52,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:52,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:53,404 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-09 15:14:53,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:53,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907893426] [2023-12-09 15:14:53,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907893426] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:14:53,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:14:53,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:14:53,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174263239] [2023-12-09 15:14:53,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:53,405 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:14:53,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:53,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:14:53,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:14:53,407 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 388 [2023-12-09 15:14:53,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1271 places, 2687 transitions, 150800 flow. Second operand has 16 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:53,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:53,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 388 [2023-12-09 15:14:53,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-12-09 15:14:58,112 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-09 15:14:58,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-09 15:14:58,125 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-12-09 15:14:58,125 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-09 15:14:58,125 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 217/388 universal loopers) in iteration 35,while PetriNetUnfolder was constructing finite prefix that currently has 103579 conditions, 5513 events (1853/5512 cut-off events. For 314785/327601 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 58210 event pairs, 21 based on Foata normal form. 162/5944 useless extension candidates. Maximal degree in co-relation 99623. Up to 1553 conditions per place.). [2023-12-09 15:14:58,127 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-12-09 15:14:58,127 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-12-09 15:14:58,127 INFO L457 BasicCegarLoop]: Path program histogram: [29, 1, 1, 1, 1, 1, 1] [2023-12-09 15:14:58,132 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 15:14:58,132 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 15:14:58,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:14:58 BasicIcfg [2023-12-09 15:14:58,135 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 15:14:58,135 INFO L158 Benchmark]: Toolchain (without parser) took 243733.60ms. Allocated memory was 251.7MB in the beginning and 4.2GB in the end (delta: 4.0GB). Free memory was 205.2MB in the beginning and 730.1MB in the end (delta: -525.0MB). Peak memory consumption was 3.5GB. Max. memory is 8.0GB. [2023-12-09 15:14:58,136 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 209.7MB. Free memory is still 157.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 15:14:58,136 INFO L158 Benchmark]: CACSL2BoogieTranslator took 253.99ms. Allocated memory is still 251.7MB. Free memory was 205.2MB in the beginning and 192.1MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-09 15:14:58,136 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.03ms. Allocated memory is still 251.7MB. Free memory was 192.1MB in the beginning and 188.9MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-09 15:14:58,140 INFO L158 Benchmark]: Boogie Preprocessor took 46.74ms. Allocated memory is still 251.7MB. Free memory was 188.9MB in the beginning and 186.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 15:14:58,140 INFO L158 Benchmark]: RCFGBuilder took 575.38ms. Allocated memory is still 251.7MB. Free memory was 186.8MB in the beginning and 159.0MB in the end (delta: 27.8MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2023-12-09 15:14:58,141 INFO L158 Benchmark]: TraceAbstraction took 242798.62ms. Allocated memory was 251.7MB in the beginning and 4.2GB in the end (delta: 4.0GB). Free memory was 158.5MB in the beginning and 730.1MB in the end (delta: -571.6MB). Peak memory consumption was 3.4GB. Max. memory is 8.0GB. [2023-12-09 15:14:58,141 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 209.7MB. Free memory is still 157.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 253.99ms. Allocated memory is still 251.7MB. Free memory was 205.2MB in the beginning and 192.1MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 54.03ms. Allocated memory is still 251.7MB. Free memory was 192.1MB in the beginning and 188.9MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 46.74ms. Allocated memory is still 251.7MB. Free memory was 188.9MB in the beginning and 186.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 575.38ms. Allocated memory is still 251.7MB. Free memory was 186.8MB in the beginning and 159.0MB in the end (delta: 27.8MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. * TraceAbstraction took 242798.62ms. Allocated memory was 251.7MB in the beginning and 4.2GB in the end (delta: 4.0GB). Free memory was 158.5MB in the beginning and 730.1MB in the end (delta: -571.6MB). Peak memory consumption was 3.4GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 217/388 universal loopers) in iteration 35,while PetriNetUnfolder was constructing finite prefix that currently has 103579 conditions, 5513 events (1853/5512 cut-off events. For 314785/327601 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 58210 event pairs, 21 based on Foata normal form. 162/5944 useless extension candidates. Maximal degree in co-relation 99623. Up to 1553 conditions per place.). - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 217/388 universal loopers) in iteration 35,while PetriNetUnfolder was constructing finite prefix that currently has 103579 conditions, 5513 events (1853/5512 cut-off events. For 314785/327601 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 58210 event pairs, 21 based on Foata normal form. 162/5944 useless extension candidates. Maximal degree in co-relation 99623. Up to 1553 conditions per place.). - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 217/388 universal loopers) in iteration 35,while PetriNetUnfolder was constructing finite prefix that currently has 103579 conditions, 5513 events (1853/5512 cut-off events. For 314785/327601 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 58210 event pairs, 21 based on Foata normal form. 162/5944 useless extension candidates. Maximal degree in co-relation 99623. Up to 1553 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 467 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 242.7s, OverallIterations: 35, TraceHistogramMax: 1, PathProgramHistogramMax: 29, EmptinessCheckTime: 0.0s, AutomataDifference: 213.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8705 SdHoareTripleChecker+Valid, 21.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8705 mSDsluCounter, 61950 SdHoareTripleChecker+Invalid, 18.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 56116 mSDsCounter, 407 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46966 IncrementalHoareTripleChecker+Invalid, 47373 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 407 mSolverCounterUnsat, 5834 mSDtfsCounter, 46966 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2615 GetRequests, 1422 SyntacticMatches, 6 SemanticMatches, 1187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8596 ImplicationChecksByTransitivity, 24.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=150800occurred in iteration=34, InterpolantAutomatonStates: 949, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 26.9s InterpolantComputationTime, 10450 NumberOfCodeBlocks, 10450 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 10956 ConstructedInterpolants, 0 QuantifiedInterpolants, 52390 SizeOfPredicates, 14 NumberOfNonLiveVariables, 1090 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 39 InterpolantComputations, 35 PerfectInterpolantSequences, 126/130 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown