/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/popl20-more-buffer-mult2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 15:26:51,894 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 15:26:51,931 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 15:26:51,947 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 15:26:51,948 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 15:26:51,948 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 15:26:51,948 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 15:26:51,949 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 15:26:51,949 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 15:26:51,952 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 15:26:51,953 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 15:26:51,953 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 15:26:51,953 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 15:26:51,954 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 15:26:51,954 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 15:26:51,954 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 15:26:51,954 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 15:26:51,954 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 15:26:51,955 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 15:26:51,955 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 15:26:51,955 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 15:26:51,955 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 15:26:51,956 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 15:26:51,956 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 15:26:51,956 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 15:26:51,956 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:26:51,956 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 15:26:51,957 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 15:26:51,957 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 15:26:51,957 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 15:26:51,958 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 15:26:51,958 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 15:26:51,958 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 15:26:51,958 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 15:26:52,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 15:26:52,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 15:26:52,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 15:26:52,226 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 15:26:52,227 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 15:26:52,228 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c [2023-12-09 15:26:53,301 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 15:26:53,534 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 15:26:53,535 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c [2023-12-09 15:26:53,552 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f5b2b517/005792d7c3374dc8b955f075217ac936/FLAG462ff459d [2023-12-09 15:26:53,578 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f5b2b517/005792d7c3374dc8b955f075217ac936 [2023-12-09 15:26:53,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 15:26:53,584 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 15:26:53,586 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 15:26:53,586 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 15:26:53,589 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 15:26:53,590 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:26:53" (1/1) ... [2023-12-09 15:26:53,591 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5386c2cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:26:53, skipping insertion in model container [2023-12-09 15:26:53,591 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:26:53" (1/1) ... [2023-12-09 15:26:53,626 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 15:26:53,836 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c[4151,4164] [2023-12-09 15:26:53,843 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:26:53,849 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 15:26:53,868 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c[4151,4164] [2023-12-09 15:26:53,871 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:26:53,877 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:26:53,877 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:26:53,882 INFO L206 MainTranslator]: Completed translation [2023-12-09 15:26:53,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:26:53 WrapperNode [2023-12-09 15:26:53,883 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 15:26:53,884 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 15:26:53,884 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 15:26:53,884 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 15:26:53,889 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:26:53" (1/1) ... [2023-12-09 15:26:53,897 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:26:53" (1/1) ... [2023-12-09 15:26:53,917 INFO L138 Inliner]: procedures = 27, calls = 76, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 316 [2023-12-09 15:26:53,917 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 15:26:53,918 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 15:26:53,918 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 15:26:53,918 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 15:26:53,924 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:26:53" (1/1) ... [2023-12-09 15:26:53,924 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:26:53" (1/1) ... [2023-12-09 15:26:53,928 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:26:53" (1/1) ... [2023-12-09 15:26:53,928 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:26:53" (1/1) ... [2023-12-09 15:26:53,938 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:26:53" (1/1) ... [2023-12-09 15:26:53,941 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:26:53" (1/1) ... [2023-12-09 15:26:53,942 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:26:53" (1/1) ... [2023-12-09 15:26:53,943 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:26:53" (1/1) ... [2023-12-09 15:26:53,946 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 15:26:53,947 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 15:26:53,947 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 15:26:53,947 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 15:26:53,947 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:26:53" (1/1) ... [2023-12-09 15:26:53,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:26:53,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:26:54,025 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 15:26:54,034 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 15:26:54,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 15:26:54,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 15:26:54,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 15:26:54,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 15:26:54,048 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-09 15:26:54,049 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-09 15:26:54,049 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-09 15:26:54,049 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-09 15:26:54,049 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-12-09 15:26:54,049 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-12-09 15:26:54,049 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-12-09 15:26:54,049 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-12-09 15:26:54,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 15:26:54,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-09 15:26:54,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-09 15:26:54,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-09 15:26:54,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 15:26:54,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 15:26:54,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 15:26:54,051 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 15:26:54,128 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 15:26:54,129 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 15:26:54,454 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 15:26:54,593 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 15:26:54,593 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-12-09 15:26:54,594 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:26:54 BoogieIcfgContainer [2023-12-09 15:26:54,594 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 15:26:54,598 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 15:26:54,598 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 15:26:54,600 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 15:26:54,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:26:53" (1/3) ... [2023-12-09 15:26:54,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@187dd8e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:26:54, skipping insertion in model container [2023-12-09 15:26:54,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:26:53" (2/3) ... [2023-12-09 15:26:54,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@187dd8e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:26:54, skipping insertion in model container [2023-12-09 15:26:54,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:26:54" (3/3) ... [2023-12-09 15:26:54,603 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult2.wvr.c [2023-12-09 15:26:54,615 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 15:26:54,616 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 15:26:54,616 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 15:26:54,689 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-12-09 15:26:54,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 239 transitions, 506 flow [2023-12-09 15:26:54,808 INFO L124 PetriNetUnfolderBase]: 18/235 cut-off events. [2023-12-09 15:26:54,808 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-12-09 15:26:54,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 235 events. 18/235 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 123 event pairs, 0 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 195. Up to 2 conditions per place. [2023-12-09 15:26:54,814 INFO L82 GeneralOperation]: Start removeDead. Operand has 234 places, 239 transitions, 506 flow [2023-12-09 15:26:54,822 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 222 transitions, 468 flow [2023-12-09 15:26:54,833 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:26:54,838 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;@1a64b220, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:26:54,838 INFO L363 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-12-09 15:26:54,892 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:26:54,892 INFO L124 PetriNetUnfolderBase]: 18/221 cut-off events. [2023-12-09 15:26:54,892 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-12-09 15:26:54,892 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:26:54,893 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] [2023-12-09 15:26:54,893 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 15:26:54,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:26:54,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1833628051, now seen corresponding path program 1 times [2023-12-09 15:26:54,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:26:54,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736419124] [2023-12-09 15:26:54,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:26:54,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:26:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:26:55,580 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 15:26:55,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:26:55,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736419124] [2023-12-09 15:26:55,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736419124] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:26:55,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:26:55,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:26:55,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000350938] [2023-12-09 15:26:55,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:26:55,589 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:26:55,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:26:55,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:26:55,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:26:55,619 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 239 [2023-12-09 15:26:55,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 222 transitions, 468 flow. Second operand has 5 states, 5 states have (on average 180.0) internal successors, (900), 5 states have internal predecessors, (900), 0 states have call successors, (0), 0 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 15:26:55,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:26:55,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 239 [2023-12-09 15:26:55,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:26:55,842 INFO L124 PetriNetUnfolderBase]: 133/554 cut-off events. [2023-12-09 15:26:55,843 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2023-12-09 15:26:55,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 844 conditions, 554 events. 133/554 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1854 event pairs, 11 based on Foata normal form. 139/641 useless extension candidates. Maximal degree in co-relation 540. Up to 139 conditions per place. [2023-12-09 15:26:55,853 INFO L140 encePairwiseOnDemand]: 215/239 looper letters, 54 selfloop transitions, 3 changer transitions 11/223 dead transitions. [2023-12-09 15:26:55,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 223 transitions, 621 flow [2023-12-09 15:26:55,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-09 15:26:55,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-12-09 15:26:55,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1283 transitions. [2023-12-09 15:26:55,867 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7668858338314405 [2023-12-09 15:26:55,867 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1283 transitions. [2023-12-09 15:26:55,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1283 transitions. [2023-12-09 15:26:55,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:26:55,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1283 transitions. [2023-12-09 15:26:55,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 183.28571428571428) internal successors, (1283), 7 states have internal predecessors, (1283), 0 states have call successors, (0), 0 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 15:26:55,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 0 states have call successors, (0), 0 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 15:26:55,885 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 0 states have call successors, (0), 0 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 15:26:55,888 INFO L308 CegarLoopForPetriNet]: 217 programPoint places, 6 predicate places. [2023-12-09 15:26:55,889 INFO L500 AbstractCegarLoop]: Abstraction has has 223 places, 223 transitions, 621 flow [2023-12-09 15:26:55,889 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 180.0) internal successors, (900), 5 states have internal predecessors, (900), 0 states have call successors, (0), 0 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 15:26:55,889 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:26:55,890 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] [2023-12-09 15:26:55,890 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 15:26:55,890 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 15:26:55,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:26:55,891 INFO L85 PathProgramCache]: Analyzing trace with hash 666142791, now seen corresponding path program 1 times [2023-12-09 15:26:55,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:26:55,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195146347] [2023-12-09 15:26:55,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:26:55,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:26:55,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:26:56,099 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 15:26:56,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:26:56,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195146347] [2023-12-09 15:26:56,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195146347] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:26:56,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:26:56,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-09 15:26:56,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761432870] [2023-12-09 15:26:56,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:26:56,101 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 15:26:56,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:26:56,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 15:26:56,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 15:26:56,103 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 239 [2023-12-09 15:26:56,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 223 transitions, 621 flow. Second operand has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 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 15:26:56,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:26:56,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 239 [2023-12-09 15:26:56,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:26:56,221 INFO L124 PetriNetUnfolderBase]: 207/771 cut-off events. [2023-12-09 15:26:56,222 INFO L125 PetriNetUnfolderBase]: For 397/426 co-relation queries the response was YES. [2023-12-09 15:26:56,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1468 conditions, 771 events. 207/771 cut-off events. For 397/426 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3277 event pairs, 16 based on Foata normal form. 13/706 useless extension candidates. Maximal degree in co-relation 1078. Up to 207 conditions per place. [2023-12-09 15:26:56,271 INFO L140 encePairwiseOnDemand]: 236/239 looper letters, 40 selfloop transitions, 3 changer transitions 12/241 dead transitions. [2023-12-09 15:26:56,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 241 transitions, 814 flow [2023-12-09 15:26:56,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 15:26:56,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 15:26:56,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 654 transitions. [2023-12-09 15:26:56,273 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9121338912133892 [2023-12-09 15:26:56,273 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 654 transitions. [2023-12-09 15:26:56,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 654 transitions. [2023-12-09 15:26:56,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:26:56,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 654 transitions. [2023-12-09 15:26:56,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 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 15:26:56,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 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 15:26:56,277 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 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 15:26:56,277 INFO L308 CegarLoopForPetriNet]: 217 programPoint places, 8 predicate places. [2023-12-09 15:26:56,277 INFO L500 AbstractCegarLoop]: Abstraction has has 225 places, 241 transitions, 814 flow [2023-12-09 15:26:56,278 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 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 15:26:56,278 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:26:56,278 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] [2023-12-09 15:26:56,278 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 15:26:56,278 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 15:26:56,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:26:56,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1435162174, now seen corresponding path program 1 times [2023-12-09 15:26:56,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:26:56,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885228319] [2023-12-09 15:26:56,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:26:56,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:26:56,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:26:56,393 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 15:26:56,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:26:56,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885228319] [2023-12-09 15:26:56,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885228319] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:26:56,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:26:56,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-09 15:26:56,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282684757] [2023-12-09 15:26:56,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:26:56,398 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 15:26:56,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:26:56,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 15:26:56,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 15:26:56,404 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 239 [2023-12-09 15:26:56,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 241 transitions, 814 flow. Second operand has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 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 15:26:56,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:26:56,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 239 [2023-12-09 15:26:56,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:26:56,617 INFO L124 PetriNetUnfolderBase]: 307/1058 cut-off events. [2023-12-09 15:26:56,618 INFO L125 PetriNetUnfolderBase]: For 1701/1737 co-relation queries the response was YES. [2023-12-09 15:26:56,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2478 conditions, 1058 events. 307/1058 cut-off events. For 1701/1737 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 5400 event pairs, 60 based on Foata normal form. 20/895 useless extension candidates. Maximal degree in co-relation 972. Up to 303 conditions per place. [2023-12-09 15:26:56,625 INFO L140 encePairwiseOnDemand]: 236/239 looper letters, 59 selfloop transitions, 4 changer transitions 17/267 dead transitions. [2023-12-09 15:26:56,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 267 transitions, 1157 flow [2023-12-09 15:26:56,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 15:26:56,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 15:26:56,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 653 transitions. [2023-12-09 15:26:56,627 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9107391910739191 [2023-12-09 15:26:56,627 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 653 transitions. [2023-12-09 15:26:56,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 653 transitions. [2023-12-09 15:26:56,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:26:56,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 653 transitions. [2023-12-09 15:26:56,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 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 15:26:56,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 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 15:26:56,630 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 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 15:26:56,631 INFO L308 CegarLoopForPetriNet]: 217 programPoint places, 10 predicate places. [2023-12-09 15:26:56,631 INFO L500 AbstractCegarLoop]: Abstraction has has 227 places, 267 transitions, 1157 flow [2023-12-09 15:26:56,632 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 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 15:26:56,632 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:26:56,632 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] [2023-12-09 15:26:56,632 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 15:26:56,632 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 15:26:56,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:26:56,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1160575349, now seen corresponding path program 1 times [2023-12-09 15:26:56,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:26:56,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620226576] [2023-12-09 15:26:56,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:26:56,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:26:56,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:26:56,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:26:56,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:26:56,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620226576] [2023-12-09 15:26:56,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620226576] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:26:56,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:26:56,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 15:26:56,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477724257] [2023-12-09 15:26:56,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:26:56,830 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 15:26:56,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:26:56,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 15:26:56,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-09 15:26:56,832 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 239 [2023-12-09 15:26:56,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 267 transitions, 1157 flow. Second operand has 6 states, 6 states have (on average 187.66666666666666) internal successors, (1126), 6 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:26:56,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:26:56,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 239 [2023-12-09 15:26:56,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:26:57,081 INFO L124 PetriNetUnfolderBase]: 348/1354 cut-off events. [2023-12-09 15:26:57,081 INFO L125 PetriNetUnfolderBase]: For 3060/3272 co-relation queries the response was YES. [2023-12-09 15:26:57,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3521 conditions, 1354 events. 348/1354 cut-off events. For 3060/3272 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 7654 event pairs, 52 based on Foata normal form. 22/1190 useless extension candidates. Maximal degree in co-relation 1585. Up to 363 conditions per place. [2023-12-09 15:26:57,092 INFO L140 encePairwiseOnDemand]: 228/239 looper letters, 118 selfloop transitions, 12 changer transitions 21/313 dead transitions. [2023-12-09 15:26:57,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 313 transitions, 1727 flow [2023-12-09 15:26:57,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-09 15:26:57,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-09 15:26:57,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1716 transitions. [2023-12-09 15:26:57,095 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.797768479776848 [2023-12-09 15:26:57,095 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1716 transitions. [2023-12-09 15:26:57,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1716 transitions. [2023-12-09 15:26:57,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:26:57,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1716 transitions. [2023-12-09 15:26:57,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 190.66666666666666) internal successors, (1716), 9 states have internal predecessors, (1716), 0 states have call successors, (0), 0 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 15:26:57,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 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 15:26:57,102 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 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 15:26:57,102 INFO L308 CegarLoopForPetriNet]: 217 programPoint places, 18 predicate places. [2023-12-09 15:26:57,102 INFO L500 AbstractCegarLoop]: Abstraction has has 235 places, 313 transitions, 1727 flow [2023-12-09 15:26:57,103 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 187.66666666666666) internal successors, (1126), 6 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:26:57,103 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:26:57,103 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] [2023-12-09 15:26:57,103 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 15:26:57,103 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 15:26:57,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:26:57,104 INFO L85 PathProgramCache]: Analyzing trace with hash -855258159, now seen corresponding path program 1 times [2023-12-09 15:26:57,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:26:57,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703090062] [2023-12-09 15:26:57,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:26:57,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:26:57,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:26:57,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:26:57,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:26:57,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703090062] [2023-12-09 15:26:57,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703090062] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:26:57,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:26:57,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 15:26:57,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394466701] [2023-12-09 15:26:57,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:26:57,270 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 15:26:57,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:26:57,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 15:26:57,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-09 15:26:57,272 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 239 [2023-12-09 15:26:57,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 313 transitions, 1727 flow. Second operand has 6 states, 6 states have (on average 187.66666666666666) internal successors, (1126), 6 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:26:57,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:26:57,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 239 [2023-12-09 15:26:57,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:26:57,618 INFO L124 PetriNetUnfolderBase]: 398/1776 cut-off events. [2023-12-09 15:26:57,618 INFO L125 PetriNetUnfolderBase]: For 5865/6376 co-relation queries the response was YES. [2023-12-09 15:26:57,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4940 conditions, 1776 events. 398/1776 cut-off events. For 5865/6376 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 11529 event pairs, 74 based on Foata normal form. 48/1612 useless extension candidates. Maximal degree in co-relation 1962. Up to 415 conditions per place. [2023-12-09 15:26:57,631 INFO L140 encePairwiseOnDemand]: 228/239 looper letters, 143 selfloop transitions, 18 changer transitions 39/362 dead transitions. [2023-12-09 15:26:57,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 362 transitions, 2585 flow [2023-12-09 15:26:57,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-09 15:26:57,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-09 15:26:57,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1701 transitions. [2023-12-09 15:26:57,634 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7907949790794979 [2023-12-09 15:26:57,635 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1701 transitions. [2023-12-09 15:26:57,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1701 transitions. [2023-12-09 15:26:57,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:26:57,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1701 transitions. [2023-12-09 15:26:57,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 189.0) internal successors, (1701), 9 states have internal predecessors, (1701), 0 states have call successors, (0), 0 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 15:26:57,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 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 15:26:57,640 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 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 15:26:57,641 INFO L308 CegarLoopForPetriNet]: 217 programPoint places, 26 predicate places. [2023-12-09 15:26:57,641 INFO L500 AbstractCegarLoop]: Abstraction has has 243 places, 362 transitions, 2585 flow [2023-12-09 15:26:57,641 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 187.66666666666666) internal successors, (1126), 6 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:26:57,641 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:26:57,642 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] [2023-12-09 15:26:57,642 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-09 15:26:57,642 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 15:26:57,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:26:57,642 INFO L85 PathProgramCache]: Analyzing trace with hash 530731511, now seen corresponding path program 1 times [2023-12-09 15:26:57,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:26:57,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69657142] [2023-12-09 15:26:57,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:26:57,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:26:57,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:26:58,045 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 15:26:58,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:26:58,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69657142] [2023-12-09 15:26:58,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69657142] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:26:58,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986077976] [2023-12-09 15:26:58,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:26:58,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:26:58,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:26:58,088 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 15:26:58,121 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 15:26:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:26:58,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-09 15:26:58,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:26:58,702 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 15:26:58,702 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:26:58,949 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 15:26:58,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986077976] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:26:58,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:26:58,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 9] total 21 [2023-12-09 15:26:58,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788400505] [2023-12-09 15:26:58,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:26:58,950 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-09 15:26:58,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:26:58,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-09 15:26:58,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2023-12-09 15:26:58,954 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 239 [2023-12-09 15:26:58,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 362 transitions, 2585 flow. Second operand has 21 states, 21 states have (on average 199.71428571428572) internal successors, (4194), 21 states have internal predecessors, (4194), 0 states have call successors, (0), 0 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 15:26:58,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:26:58,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 239 [2023-12-09 15:26:58,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:27:03,405 INFO L124 PetriNetUnfolderBase]: 9951/18805 cut-off events. [2023-12-09 15:27:03,405 INFO L125 PetriNetUnfolderBase]: For 77273/89079 co-relation queries the response was YES. [2023-12-09 15:27:03,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66502 conditions, 18805 events. 9951/18805 cut-off events. For 77273/89079 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 159597 event pairs, 436 based on Foata normal form. 413/17186 useless extension candidates. Maximal degree in co-relation 44138. Up to 5423 conditions per place. [2023-12-09 15:27:03,592 INFO L140 encePairwiseOnDemand]: 227/239 looper letters, 685 selfloop transitions, 163 changer transitions 156/1214 dead transitions. [2023-12-09 15:27:03,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 1214 transitions, 13148 flow [2023-12-09 15:27:03,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-12-09 15:27:03,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2023-12-09 15:27:03,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 11227 transitions. [2023-12-09 15:27:03,611 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8699054703238803 [2023-12-09 15:27:03,611 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 11227 transitions. [2023-12-09 15:27:03,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 11227 transitions. [2023-12-09 15:27:03,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:27:03,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 11227 transitions. [2023-12-09 15:27:03,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 207.90740740740742) internal successors, (11227), 54 states have internal predecessors, (11227), 0 states have call successors, (0), 0 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 15:27:03,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 239.0) internal successors, (13145), 55 states have internal predecessors, (13145), 0 states have call successors, (0), 0 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 15:27:03,666 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 239.0) internal successors, (13145), 55 states have internal predecessors, (13145), 0 states have call successors, (0), 0 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 15:27:03,667 INFO L308 CegarLoopForPetriNet]: 217 programPoint places, 79 predicate places. [2023-12-09 15:27:03,668 INFO L500 AbstractCegarLoop]: Abstraction has has 296 places, 1214 transitions, 13148 flow [2023-12-09 15:27:03,669 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 199.71428571428572) internal successors, (4194), 21 states have internal predecessors, (4194), 0 states have call successors, (0), 0 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 15:27:03,669 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:27:03,669 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] [2023-12-09 15:27:03,685 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-09 15:27:03,876 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-09 15:27:03,876 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 15:27:03,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:27:03,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1810027447, now seen corresponding path program 2 times [2023-12-09 15:27:03,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:27:03,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130460064] [2023-12-09 15:27:03,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:27:03,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:27:03,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:27:04,385 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 15:27:04,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:27:04,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130460064] [2023-12-09 15:27:04,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130460064] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:27:04,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:27:04,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 15:27:04,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621637880] [2023-12-09 15:27:04,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:27:04,387 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:27:04,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:27:04,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:27:04,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-09 15:27:04,389 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 239 [2023-12-09 15:27:04,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 1214 transitions, 13148 flow. Second operand has 7 states, 7 states have (on average 200.42857142857142) internal successors, (1403), 7 states have internal predecessors, (1403), 0 states have call successors, (0), 0 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 15:27:04,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:27:04,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 239 [2023-12-09 15:27:04,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:27:07,943 INFO L124 PetriNetUnfolderBase]: 10340/20170 cut-off events. [2023-12-09 15:27:07,944 INFO L125 PetriNetUnfolderBase]: For 86741/95694 co-relation queries the response was YES. [2023-12-09 15:27:08,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84568 conditions, 20170 events. 10340/20170 cut-off events. For 86741/95694 co-relation queries the response was YES. Maximal size of possible extension queue 732. Compared 176755 event pairs, 356 based on Foata normal form. 421/18551 useless extension candidates. Maximal degree in co-relation 47726. Up to 10051 conditions per place. [2023-12-09 15:27:08,111 INFO L140 encePairwiseOnDemand]: 228/239 looper letters, 897 selfloop transitions, 45 changer transitions 229/1381 dead transitions. [2023-12-09 15:27:08,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 1381 transitions, 17774 flow [2023-12-09 15:27:08,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 15:27:08,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 15:27:08,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1679 transitions. [2023-12-09 15:27:08,118 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8781380753138075 [2023-12-09 15:27:08,118 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1679 transitions. [2023-12-09 15:27:08,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1679 transitions. [2023-12-09 15:27:08,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:27:08,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1679 transitions. [2023-12-09 15:27:08,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 209.875) internal successors, (1679), 8 states have internal predecessors, (1679), 0 states have call successors, (0), 0 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 15:27:08,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 239.0) internal successors, (2151), 9 states have internal predecessors, (2151), 0 states have call successors, (0), 0 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 15:27:08,125 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 239.0) internal successors, (2151), 9 states have internal predecessors, (2151), 0 states have call successors, (0), 0 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 15:27:08,125 INFO L308 CegarLoopForPetriNet]: 217 programPoint places, 86 predicate places. [2023-12-09 15:27:08,126 INFO L500 AbstractCegarLoop]: Abstraction has has 303 places, 1381 transitions, 17774 flow [2023-12-09 15:27:08,126 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 200.42857142857142) internal successors, (1403), 7 states have internal predecessors, (1403), 0 states have call successors, (0), 0 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 15:27:08,126 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:27:08,126 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] [2023-12-09 15:27:08,126 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-09 15:27:08,126 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 15:27:08,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:27:08,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1619899137, now seen corresponding path program 3 times [2023-12-09 15:27:08,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:27:08,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053743342] [2023-12-09 15:27:08,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:27:08,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:27:08,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:27:08,666 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 15:27:08,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:27:08,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053743342] [2023-12-09 15:27:08,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053743342] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:27:08,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:27:08,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 15:27:08,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308703072] [2023-12-09 15:27:08,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:27:08,667 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:27:08,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:27:08,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:27:08,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-09 15:27:08,668 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 239 [2023-12-09 15:27:08,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 1381 transitions, 17774 flow. Second operand has 7 states, 7 states have (on average 200.42857142857142) internal successors, (1403), 7 states have internal predecessors, (1403), 0 states have call successors, (0), 0 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 15:27:08,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:27:08,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 239 [2023-12-09 15:27:08,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:27:14,314 INFO L124 PetriNetUnfolderBase]: 14874/27899 cut-off events. [2023-12-09 15:27:14,314 INFO L125 PetriNetUnfolderBase]: For 136092/175924 co-relation queries the response was YES. [2023-12-09 15:27:14,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141156 conditions, 27899 events. 14874/27899 cut-off events. For 136092/175924 co-relation queries the response was YES. Maximal size of possible extension queue 1083. Compared 253064 event pairs, 253 based on Foata normal form. 811/26018 useless extension candidates. Maximal degree in co-relation 94651. Up to 15290 conditions per place. [2023-12-09 15:27:14,655 INFO L140 encePairwiseOnDemand]: 230/239 looper letters, 1448 selfloop transitions, 81 changer transitions 346/2085 dead transitions. [2023-12-09 15:27:14,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 2085 transitions, 31620 flow [2023-12-09 15:27:14,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-09 15:27:14,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-12-09 15:27:14,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2315 transitions. [2023-12-09 15:27:14,659 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8805629516926589 [2023-12-09 15:27:14,659 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2315 transitions. [2023-12-09 15:27:14,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2315 transitions. [2023-12-09 15:27:14,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:27:14,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2315 transitions. [2023-12-09 15:27:14,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 210.45454545454547) internal successors, (2315), 11 states have internal predecessors, (2315), 0 states have call successors, (0), 0 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 15:27:14,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 239.0) internal successors, (2868), 12 states have internal predecessors, (2868), 0 states have call successors, (0), 0 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 15:27:14,668 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 239.0) internal successors, (2868), 12 states have internal predecessors, (2868), 0 states have call successors, (0), 0 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 15:27:14,668 INFO L308 CegarLoopForPetriNet]: 217 programPoint places, 96 predicate places. [2023-12-09 15:27:14,668 INFO L500 AbstractCegarLoop]: Abstraction has has 313 places, 2085 transitions, 31620 flow [2023-12-09 15:27:14,669 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 200.42857142857142) internal successors, (1403), 7 states have internal predecessors, (1403), 0 states have call successors, (0), 0 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 15:27:14,669 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:27:14,669 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] [2023-12-09 15:27:14,669 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-09 15:27:14,669 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 15:27:14,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:27:14,670 INFO L85 PathProgramCache]: Analyzing trace with hash 2070020773, now seen corresponding path program 4 times [2023-12-09 15:27:14,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:27:14,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745343065] [2023-12-09 15:27:14,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:27:14,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:27:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:27:15,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:27:15,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:27:15,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745343065] [2023-12-09 15:27:15,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745343065] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:27:15,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:27:15,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-09 15:27:15,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565765660] [2023-12-09 15:27:15,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:27:15,275 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-09 15:27:15,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:27:15,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-09 15:27:15,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-09 15:27:15,277 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 239 [2023-12-09 15:27:15,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 2085 transitions, 31620 flow. Second operand has 10 states, 10 states have (on average 195.8) internal successors, (1958), 10 states have internal predecessors, (1958), 0 states have call successors, (0), 0 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 15:27:15,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:27:15,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 239 [2023-12-09 15:27:15,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:27:30,761 INFO L124 PetriNetUnfolderBase]: 34057/64560 cut-off events. [2023-12-09 15:27:30,761 INFO L125 PetriNetUnfolderBase]: For 441555/579138 co-relation queries the response was YES. [2023-12-09 15:27:31,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346174 conditions, 64560 events. 34057/64560 cut-off events. For 441555/579138 co-relation queries the response was YES. Maximal size of possible extension queue 2801. Compared 678691 event pairs, 2285 based on Foata normal form. 1400/57591 useless extension candidates. Maximal degree in co-relation 181701. Up to 29206 conditions per place. [2023-12-09 15:27:31,620 INFO L140 encePairwiseOnDemand]: 227/239 looper letters, 2597 selfloop transitions, 211 changer transitions 782/3862 dead transitions. [2023-12-09 15:27:31,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 3862 transitions, 68768 flow [2023-12-09 15:27:31,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-09 15:27:31,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-12-09 15:27:31,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2670 transitions. [2023-12-09 15:27:31,626 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8593498551657548 [2023-12-09 15:27:31,626 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2670 transitions. [2023-12-09 15:27:31,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2670 transitions. [2023-12-09 15:27:31,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:27:31,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2670 transitions. [2023-12-09 15:27:31,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 205.3846153846154) internal successors, (2670), 13 states have internal predecessors, (2670), 0 states have call successors, (0), 0 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 15:27:31,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 239.0) internal successors, (3346), 14 states have internal predecessors, (3346), 0 states have call successors, (0), 0 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 15:27:31,639 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 239.0) internal successors, (3346), 14 states have internal predecessors, (3346), 0 states have call successors, (0), 0 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 15:27:31,640 INFO L308 CegarLoopForPetriNet]: 217 programPoint places, 108 predicate places. [2023-12-09 15:27:31,640 INFO L500 AbstractCegarLoop]: Abstraction has has 325 places, 3862 transitions, 68768 flow [2023-12-09 15:27:31,641 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 195.8) internal successors, (1958), 10 states have internal predecessors, (1958), 0 states have call successors, (0), 0 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 15:27:31,641 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:27:31,641 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] [2023-12-09 15:27:31,641 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-09 15:27:31,641 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 15:27:31,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:27:31,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1976172921, now seen corresponding path program 5 times [2023-12-09 15:27:31,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:27:31,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834970723] [2023-12-09 15:27:31,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:27:31,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:27:31,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:27:31,989 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 15:27:31,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:27:31,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834970723] [2023-12-09 15:27:31,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834970723] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:27:31,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:27:31,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 15:27:31,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092233501] [2023-12-09 15:27:31,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:27:31,991 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:27:31,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:27:31,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:27:31,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-09 15:27:31,993 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 239 [2023-12-09 15:27:31,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 3862 transitions, 68768 flow. Second operand has 7 states, 7 states have (on average 200.42857142857142) internal successors, (1403), 7 states have internal predecessors, (1403), 0 states have call successors, (0), 0 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 15:27:31,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:27:31,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 239 [2023-12-09 15:27:31,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:27:54,817 INFO L124 PetriNetUnfolderBase]: 34742/66373 cut-off events. [2023-12-09 15:27:54,818 INFO L125 PetriNetUnfolderBase]: For 560442/943890 co-relation queries the response was YES. [2023-12-09 15:27:55,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398610 conditions, 66373 events. 34742/66373 cut-off events. For 560442/943890 co-relation queries the response was YES. Maximal size of possible extension queue 2894. Compared 702519 event pairs, 2403 based on Foata normal form. 2869/60588 useless extension candidates. Maximal degree in co-relation 205464. Up to 28114 conditions per place. [2023-12-09 15:27:55,588 INFO L140 encePairwiseOnDemand]: 229/239 looper letters, 2918 selfloop transitions, 209 changer transitions 936/4281 dead transitions. [2023-12-09 15:27:55,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 4281 transitions, 84998 flow [2023-12-09 15:27:55,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-09 15:27:55,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-09 15:27:55,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1890 transitions. [2023-12-09 15:27:55,591 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8786610878661087 [2023-12-09 15:27:55,591 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1890 transitions. [2023-12-09 15:27:55,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1890 transitions. [2023-12-09 15:27:55,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:27:55,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1890 transitions. [2023-12-09 15:27:55,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 210.0) internal successors, (1890), 9 states have internal predecessors, (1890), 0 states have call successors, (0), 0 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 15:27:55,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 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 15:27:55,595 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 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 15:27:55,595 INFO L308 CegarLoopForPetriNet]: 217 programPoint places, 116 predicate places. [2023-12-09 15:27:55,595 INFO L500 AbstractCegarLoop]: Abstraction has has 333 places, 4281 transitions, 84998 flow [2023-12-09 15:27:55,596 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 200.42857142857142) internal successors, (1403), 7 states have internal predecessors, (1403), 0 states have call successors, (0), 0 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 15:27:55,596 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:27:55,596 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] [2023-12-09 15:27:55,596 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-09 15:27:55,596 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 15:27:55,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:27:55,596 INFO L85 PathProgramCache]: Analyzing trace with hash 199112659, now seen corresponding path program 6 times [2023-12-09 15:27:55,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:27:55,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044778442] [2023-12-09 15:27:55,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:27:55,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:27:55,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:27:56,201 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 15:27:56,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:27:56,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044778442] [2023-12-09 15:27:56,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044778442] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:27:56,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:27:56,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-09 15:27:56,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652296547] [2023-12-09 15:27:56,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:27:56,203 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-09 15:27:56,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:27:56,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-09 15:27:56,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-09 15:27:56,204 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 239 [2023-12-09 15:27:56,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 4281 transitions, 84998 flow. Second operand has 8 states, 8 states have (on average 200.0) internal successors, (1600), 8 states have internal predecessors, (1600), 0 states have call successors, (0), 0 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 15:27:56,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:27:56,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 239 [2023-12-09 15:27:56,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:23,896 INFO L124 PetriNetUnfolderBase]: 35701/69316 cut-off events. [2023-12-09 15:28:23,896 INFO L125 PetriNetUnfolderBase]: For 735702/1511771 co-relation queries the response was YES. [2023-12-09 15:28:24,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462056 conditions, 69316 events. 35701/69316 cut-off events. For 735702/1511771 co-relation queries the response was YES. Maximal size of possible extension queue 3078. Compared 751463 event pairs, 2544 based on Foata normal form. 4119/64898 useless extension candidates. Maximal degree in co-relation 239434. Up to 29767 conditions per place. [2023-12-09 15:28:24,928 INFO L140 encePairwiseOnDemand]: 228/239 looper letters, 3017 selfloop transitions, 301 changer transitions 1068/4604 dead transitions. [2023-12-09 15:28:24,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 4604 transitions, 100762 flow [2023-12-09 15:28:24,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 15:28:24,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 15:28:24,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2100 transitions. [2023-12-09 15:28:24,931 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8786610878661087 [2023-12-09 15:28:24,931 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2100 transitions. [2023-12-09 15:28:24,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2100 transitions. [2023-12-09 15:28:24,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:24,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2100 transitions. [2023-12-09 15:28:24,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 210.0) internal successors, (2100), 10 states have internal predecessors, (2100), 0 states have call successors, (0), 0 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 15:28:24,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 239.0) internal successors, (2629), 11 states have internal predecessors, (2629), 0 states have call successors, (0), 0 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 15:28:24,935 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 239.0) internal successors, (2629), 11 states have internal predecessors, (2629), 0 states have call successors, (0), 0 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 15:28:24,935 INFO L308 CegarLoopForPetriNet]: 217 programPoint places, 125 predicate places. [2023-12-09 15:28:24,936 INFO L500 AbstractCegarLoop]: Abstraction has has 342 places, 4604 transitions, 100762 flow [2023-12-09 15:28:24,936 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 200.0) internal successors, (1600), 8 states have internal predecessors, (1600), 0 states have call successors, (0), 0 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 15:28:24,936 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:24,936 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] [2023-12-09 15:28:24,936 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-09 15:28:24,936 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 15:28:24,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:24,937 INFO L85 PathProgramCache]: Analyzing trace with hash 956197517, now seen corresponding path program 7 times [2023-12-09 15:28:24,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:24,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757070380] [2023-12-09 15:28:24,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:24,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:25,261 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 15:28:25,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:25,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757070380] [2023-12-09 15:28:25,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757070380] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:28:25,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:28:25,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-09 15:28:25,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338471078] [2023-12-09 15:28:25,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:28:25,262 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-09 15:28:25,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:25,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-09 15:28:25,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-09 15:28:25,264 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 239 [2023-12-09 15:28:25,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 4604 transitions, 100762 flow. Second operand has 8 states, 8 states have (on average 196.5) internal successors, (1572), 8 states have internal predecessors, (1572), 0 states have call successors, (0), 0 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 15:28:25,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:25,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 239 [2023-12-09 15:28:25,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand