/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/pthread-ext/36_stack_cas_p0_vs_concur.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 14:54:54,390 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 14:54:54,460 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 14:54:54,487 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 14:54:54,487 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 14:54:54,488 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 14:54:54,488 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 14:54:54,488 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 14:54:54,489 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 14:54:54,492 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 14:54:54,492 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 14:54:54,492 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 14:54:54,492 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 14:54:54,493 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 14:54:54,493 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 14:54:54,494 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 14:54:54,494 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 14:54:54,494 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 14:54:54,494 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 14:54:54,494 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 14:54:54,494 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 14:54:54,495 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 14:54:54,495 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 14:54:54,495 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 14:54:54,495 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 14:54:54,496 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:54:54,496 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 14:54:54,496 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 14:54:54,497 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 14:54:54,497 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 14:54:54,497 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 14:54:54,497 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 14:54:54,498 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 14:54:54,498 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 14:54:54,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 14:54:54,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 14:54:54,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 14:54:54,724 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 14:54:54,725 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 14:54:54,726 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i [2023-12-09 14:54:55,737 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 14:54:55,981 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 14:54:55,982 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i [2023-12-09 14:54:56,001 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e76e857fb/c23e4e4cbd1e48b7af4eb3bbf18d6250/FLAG0bb5aba16 [2023-12-09 14:54:56,014 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e76e857fb/c23e4e4cbd1e48b7af4eb3bbf18d6250 [2023-12-09 14:54:56,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 14:54:56,017 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 14:54:56,018 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 14:54:56,018 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 14:54:56,021 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 14:54:56,022 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:54:56" (1/1) ... [2023-12-09 14:54:56,022 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e3b1e4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:54:56, skipping insertion in model container [2023-12-09 14:54:56,023 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:54:56" (1/1) ... [2023-12-09 14:54:56,061 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 14:54:56,315 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i[30869,30882] [2023-12-09 14:54:56,321 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:54:56,329 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 14:54:56,355 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i[30869,30882] [2023-12-09 14:54:56,356 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:54:56,376 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 14:54:56,376 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 14:54:56,381 INFO L206 MainTranslator]: Completed translation [2023-12-09 14:54:56,382 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:54:56 WrapperNode [2023-12-09 14:54:56,382 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 14:54:56,382 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 14:54:56,383 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 14:54:56,383 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 14:54:56,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:54:56" (1/1) ... [2023-12-09 14:54:56,409 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:54:56" (1/1) ... [2023-12-09 14:54:56,423 INFO L138 Inliner]: procedures = 172, calls = 39, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 105 [2023-12-09 14:54:56,424 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 14:54:56,424 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 14:54:56,424 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 14:54:56,425 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 14:54:56,430 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:54:56" (1/1) ... [2023-12-09 14:54:56,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:54:56" (1/1) ... [2023-12-09 14:54:56,432 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:54:56" (1/1) ... [2023-12-09 14:54:56,432 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:54:56" (1/1) ... [2023-12-09 14:54:56,436 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:54:56" (1/1) ... [2023-12-09 14:54:56,438 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:54:56" (1/1) ... [2023-12-09 14:54:56,440 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:54:56" (1/1) ... [2023-12-09 14:54:56,440 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:54:56" (1/1) ... [2023-12-09 14:54:56,442 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 14:54:56,443 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 14:54:56,443 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 14:54:56,443 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 14:54:56,443 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:54:56" (1/1) ... [2023-12-09 14:54:56,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:54:56,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:54:56,470 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 14:54:56,475 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 14:54:56,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 14:54:56,494 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-12-09 14:54:56,494 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-12-09 14:54:56,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 14:54:56,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-09 14:54:56,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 14:54:56,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 14:54:56,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 14:54:56,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 14:54:56,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-09 14:54:56,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 14:54:56,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 14:54:56,496 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 14:54:56,585 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 14:54:56,586 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 14:54:56,728 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 14:54:56,784 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 14:54:56,785 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-09 14:54:56,786 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:54:56 BoogieIcfgContainer [2023-12-09 14:54:56,786 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 14:54:56,787 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 14:54:56,787 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 14:54:56,789 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 14:54:56,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:54:56" (1/3) ... [2023-12-09 14:54:56,790 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d16fe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:54:56, skipping insertion in model container [2023-12-09 14:54:56,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:54:56" (2/3) ... [2023-12-09 14:54:56,790 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d16fe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:54:56, skipping insertion in model container [2023-12-09 14:54:56,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:54:56" (3/3) ... [2023-12-09 14:54:56,791 INFO L112 eAbstractionObserver]: Analyzing ICFG 36_stack_cas_p0_vs_concur.i [2023-12-09 14:54:56,802 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 14:54:56,803 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 14:54:56,803 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 14:54:56,856 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:54:56,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 85 transitions, 174 flow [2023-12-09 14:54:56,920 INFO L124 PetriNetUnfolderBase]: 9/96 cut-off events. [2023-12-09 14:54:56,921 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-09 14:54:56,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 96 events. 9/96 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 116 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 69. Up to 4 conditions per place. [2023-12-09 14:54:56,927 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 85 transitions, 174 flow [2023-12-09 14:54:56,932 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 85 transitions, 174 flow [2023-12-09 14:54:56,939 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:54:56,943 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;@e83da69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:54:56,944 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-09 14:54:56,952 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:54:56,952 INFO L124 PetriNetUnfolderBase]: 3/49 cut-off events. [2023-12-09 14:54:56,952 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-09 14:54:56,953 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:54:56,953 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:54:56,954 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-09 14:54:56,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:54:56,957 INFO L85 PathProgramCache]: Analyzing trace with hash 630192836, now seen corresponding path program 1 times [2023-12-09 14:54:56,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:54:56,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198281380] [2023-12-09 14:54:56,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:54:56,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:54:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:54:57,042 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 14:54:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:54:57,070 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 14:54:57,071 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 14:54:57,072 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-12-09 14:54:57,073 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-12-09 14:54:57,073 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-12-09 14:54:57,074 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 14:54:57,074 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-12-09 14:54:57,076 WARN L227 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 14:54:57,076 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-12-09 14:54:57,121 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:54:57,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 142 transitions, 294 flow [2023-12-09 14:54:57,174 INFO L124 PetriNetUnfolderBase]: 17/166 cut-off events. [2023-12-09 14:54:57,174 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 14:54:57,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 166 events. 17/166 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 386 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 125. Up to 6 conditions per place. [2023-12-09 14:54:57,178 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 142 transitions, 294 flow [2023-12-09 14:54:57,182 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 142 transitions, 294 flow [2023-12-09 14:54:57,185 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:54:57,186 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;@e83da69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:54:57,186 INFO L363 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-12-09 14:54:57,196 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:54:57,196 INFO L124 PetriNetUnfolderBase]: 5/82 cut-off events. [2023-12-09 14:54:57,196 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 14:54:57,196 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:54:57,196 INFO L233 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:54:57,196 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-09 14:54:57,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:54:57,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1304609772, now seen corresponding path program 1 times [2023-12-09 14:54:57,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:54:57,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990300308] [2023-12-09 14:54:57,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:54:57,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:54:57,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:54:57,219 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 14:54:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:54:57,243 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 14:54:57,243 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 14:54:57,244 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-12-09 14:54:57,244 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-12-09 14:54:57,244 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-12-09 14:54:57,244 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-12-09 14:54:57,244 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 14:54:57,244 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-12-09 14:54:57,245 WARN L227 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 14:54:57,245 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-12-09 14:54:57,284 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:54:57,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 199 transitions, 416 flow [2023-12-09 14:54:57,339 INFO L124 PetriNetUnfolderBase]: 25/236 cut-off events. [2023-12-09 14:54:57,340 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-12-09 14:54:57,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 236 events. 25/236 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 703 event pairs, 0 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 181. Up to 8 conditions per place. [2023-12-09 14:54:57,345 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 199 transitions, 416 flow [2023-12-09 14:54:57,350 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 184 places, 199 transitions, 416 flow [2023-12-09 14:54:57,351 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:54:57,356 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;@e83da69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:54:57,356 INFO L363 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-12-09 14:54:57,392 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:54:57,392 INFO L124 PetriNetUnfolderBase]: 10/137 cut-off events. [2023-12-09 14:54:57,392 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-12-09 14:54:57,393 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:54:57,393 INFO L233 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:54:57,393 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-09 14:54:57,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:54:57,394 INFO L85 PathProgramCache]: Analyzing trace with hash 317464035, now seen corresponding path program 1 times [2023-12-09 14:54:57,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:54:57,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807074085] [2023-12-09 14:54:57,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:54:57,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:54:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:54:57,443 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 14:54:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:54:57,485 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 14:54:57,485 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 14:54:57,485 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-12-09 14:54:57,486 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-12-09 14:54:57,486 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-12-09 14:54:57,486 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-12-09 14:54:57,486 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-12-09 14:54:57,486 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 14:54:57,486 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-12-09 14:54:57,487 WARN L227 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 14:54:57,487 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-12-09 14:54:57,533 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:54:57,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 256 transitions, 540 flow [2023-12-09 14:54:57,570 INFO L124 PetriNetUnfolderBase]: 33/306 cut-off events. [2023-12-09 14:54:57,570 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-12-09 14:54:57,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 306 events. 33/306 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1067 event pairs, 0 based on Foata normal form. 0/264 useless extension candidates. Maximal degree in co-relation 244. Up to 10 conditions per place. [2023-12-09 14:54:57,574 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 256 transitions, 540 flow [2023-12-09 14:54:57,576 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 236 places, 256 transitions, 540 flow [2023-12-09 14:54:57,577 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:54:57,581 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;@e83da69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:54:57,581 INFO L363 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-12-09 14:54:57,599 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:54:57,599 INFO L124 PetriNetUnfolderBase]: 14/159 cut-off events. [2023-12-09 14:54:57,599 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-12-09 14:54:57,599 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:54:57,599 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] [2023-12-09 14:54:57,600 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-09 14:54:57,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:54:57,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1819518658, now seen corresponding path program 1 times [2023-12-09 14:54:57,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:54:57,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3073291] [2023-12-09 14:54:57,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:54:57,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:54:57,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:54:57,727 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 14:54:57,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:54:57,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3073291] [2023-12-09 14:54:57,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3073291] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:54:57,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:54:57,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-09 14:54:57,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31729267] [2023-12-09 14:54:57,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:54:57,734 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-09 14:54:57,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:54:57,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-09 14:54:57,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-09 14:54:57,774 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 256 [2023-12-09 14:54:57,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 256 transitions, 540 flow. Second operand has 2 states, 2 states have (on average 212.0) internal successors, (424), 2 states have internal predecessors, (424), 0 states have call successors, (0), 0 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 14:54:57,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:54:57,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 256 [2023-12-09 14:54:57,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:55:00,606 INFO L124 PetriNetUnfolderBase]: 4581/17460 cut-off events. [2023-12-09 14:55:00,607 INFO L125 PetriNetUnfolderBase]: For 3038/3038 co-relation queries the response was YES. [2023-12-09 14:55:00,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23994 conditions, 17460 events. 4581/17460 cut-off events. For 3038/3038 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 199457 event pairs, 3099 based on Foata normal form. 4764/20433 useless extension candidates. Maximal degree in co-relation 3555. Up to 5438 conditions per place. [2023-12-09 14:55:00,850 INFO L140 encePairwiseOnDemand]: 234/256 looper letters, 24 selfloop transitions, 0 changer transitions 0/205 dead transitions. [2023-12-09 14:55:00,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 205 transitions, 486 flow [2023-12-09 14:55:00,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-09 14:55:00,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-12-09 14:55:00,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 466 transitions. [2023-12-09 14:55:00,865 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.91015625 [2023-12-09 14:55:00,866 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 466 transitions. [2023-12-09 14:55:00,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 466 transitions. [2023-12-09 14:55:00,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:55:00,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 466 transitions. [2023-12-09 14:55:00,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 233.0) internal successors, (466), 2 states have internal predecessors, (466), 0 states have call successors, (0), 0 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 14:55:00,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 256.0) internal successors, (768), 3 states have internal predecessors, (768), 0 states have call successors, (0), 0 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 14:55:00,878 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 256.0) internal successors, (768), 3 states have internal predecessors, (768), 0 states have call successors, (0), 0 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 14:55:00,881 INFO L308 CegarLoopForPetriNet]: 236 programPoint places, -33 predicate places. [2023-12-09 14:55:00,881 INFO L500 AbstractCegarLoop]: Abstraction has has 203 places, 205 transitions, 486 flow [2023-12-09 14:55:00,881 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 212.0) internal successors, (424), 2 states have internal predecessors, (424), 0 states have call successors, (0), 0 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 14:55:00,881 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:55:00,881 INFO L233 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:55:00,882 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 14:55:00,882 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-09 14:55:00,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:55:00,882 INFO L85 PathProgramCache]: Analyzing trace with hash -312210686, now seen corresponding path program 1 times [2023-12-09 14:55:00,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:55:00,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721582393] [2023-12-09 14:55:00,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:55:00,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:55:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:55:00,919 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 14:55:00,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:55:00,952 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 14:55:00,953 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 14:55:00,953 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-12-09 14:55:00,953 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-12-09 14:55:00,953 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-12-09 14:55:00,953 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-12-09 14:55:00,953 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-12-09 14:55:00,954 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-12-09 14:55:00,954 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-09 14:55:00,954 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1] [2023-12-09 14:55:00,954 WARN L227 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 14:55:00,954 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-12-09 14:55:01,004 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:55:01,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 288 places, 313 transitions, 666 flow [2023-12-09 14:55:01,058 INFO L124 PetriNetUnfolderBase]: 41/376 cut-off events. [2023-12-09 14:55:01,058 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-12-09 14:55:01,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 376 events. 41/376 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1381 event pairs, 0 based on Foata normal form. 0/324 useless extension candidates. Maximal degree in co-relation 319. Up to 12 conditions per place. [2023-12-09 14:55:01,064 INFO L82 GeneralOperation]: Start removeDead. Operand has 288 places, 313 transitions, 666 flow [2023-12-09 14:55:01,067 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 288 places, 313 transitions, 666 flow [2023-12-09 14:55:01,070 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:55:01,074 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;@e83da69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:55:01,075 INFO L363 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-12-09 14:55:01,085 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:55:01,086 INFO L124 PetriNetUnfolderBase]: 13/155 cut-off events. [2023-12-09 14:55:01,086 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-12-09 14:55:01,086 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:55:01,086 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] [2023-12-09 14:55:01,086 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-09 14:55:01,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:55:01,086 INFO L85 PathProgramCache]: Analyzing trace with hash 752364654, now seen corresponding path program 1 times [2023-12-09 14:55:01,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:55:01,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782483242] [2023-12-09 14:55:01,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:55:01,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:55:01,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:55:01,135 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 14:55:01,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:55:01,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782483242] [2023-12-09 14:55:01,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782483242] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:55:01,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:55:01,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-09 14:55:01,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003717537] [2023-12-09 14:55:01,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:55:01,140 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-09 14:55:01,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:55:01,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-09 14:55:01,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-09 14:55:01,142 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 313 [2023-12-09 14:55:01,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 313 transitions, 666 flow. Second operand has 2 states, 2 states have (on average 258.0) internal successors, (516), 2 states have internal predecessors, (516), 0 states have call successors, (0), 0 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 14:55:01,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:55:01,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 313 [2023-12-09 14:55:01,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:55:20,474 INFO L124 PetriNetUnfolderBase]: 35650/112860 cut-off events. [2023-12-09 14:55:20,474 INFO L125 PetriNetUnfolderBase]: For 28732/28732 co-relation queries the response was YES. [2023-12-09 14:55:22,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161589 conditions, 112860 events. 35650/112860 cut-off events. For 28732/28732 co-relation queries the response was YES. Maximal size of possible extension queue 2239. Compared 1587847 event pairs, 25360 based on Foata normal form. 34014/134767 useless extension candidates. Maximal degree in co-relation 24203. Up to 40792 conditions per place. [2023-12-09 14:55:23,338 INFO L140 encePairwiseOnDemand]: 286/313 looper letters, 30 selfloop transitions, 0 changer transitions 0/251 dead transitions. [2023-12-09 14:55:23,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 251 transitions, 602 flow [2023-12-09 14:55:23,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-09 14:55:23,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-12-09 14:55:23,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 569 transitions. [2023-12-09 14:55:23,340 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9089456869009584 [2023-12-09 14:55:23,340 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 569 transitions. [2023-12-09 14:55:23,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 569 transitions. [2023-12-09 14:55:23,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:55:23,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 569 transitions. [2023-12-09 14:55:23,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 284.5) internal successors, (569), 2 states have internal predecessors, (569), 0 states have call successors, (0), 0 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 14:55:23,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 313.0) internal successors, (939), 3 states have internal predecessors, (939), 0 states have call successors, (0), 0 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 14:55:23,344 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 313.0) internal successors, (939), 3 states have internal predecessors, (939), 0 states have call successors, (0), 0 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 14:55:23,344 INFO L308 CegarLoopForPetriNet]: 288 programPoint places, -40 predicate places. [2023-12-09 14:55:23,344 INFO L500 AbstractCegarLoop]: Abstraction has has 248 places, 251 transitions, 602 flow [2023-12-09 14:55:23,345 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 258.0) internal successors, (516), 2 states have internal predecessors, (516), 0 states have call successors, (0), 0 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 14:55:23,345 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:55:23,345 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] [2023-12-09 14:55:23,345 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-09 14:55:23,345 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-09 14:55:23,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:55:23,346 INFO L85 PathProgramCache]: Analyzing trace with hash 72215910, now seen corresponding path program 1 times [2023-12-09 14:55:23,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:55:23,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138300449] [2023-12-09 14:55:23,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:55:23,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:55:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:55:23,853 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 14:55:23,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:55:23,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138300449] [2023-12-09 14:55:23,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138300449] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:55:23,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:55:23,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-09 14:55:23,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100273573] [2023-12-09 14:55:23,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:55:23,860 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-09 14:55:23,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:55:23,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-09 14:55:23,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-09 14:55:23,863 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 313 [2023-12-09 14:55:23,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 251 transitions, 602 flow. Second operand has 11 states, 11 states have (on average 208.63636363636363) internal successors, (2295), 11 states have internal predecessors, (2295), 0 states have call successors, (0), 0 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 14:55:23,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:55:23,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 313 [2023-12-09 14:55:23,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand