/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -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/01b_inc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-29 19:11:37,591 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 19:11:37,650 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-29 19:11:37,678 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 19:11:37,679 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 19:11:37,679 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 19:11:37,680 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 19:11:37,680 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 19:11:37,680 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 19:11:37,684 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 19:11:37,684 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 19:11:37,684 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 19:11:37,684 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 19:11:37,684 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 19:11:37,684 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 19:11:37,685 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 19:11:37,685 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 19:11:37,685 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 19:11:37,685 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 19:11:37,685 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 19:11:37,685 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 19:11:37,696 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 19:11:37,696 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 19:11:37,696 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-29 19:11:37,696 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 19:11:37,697 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 19:11:37,697 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 19:11:37,697 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 19:11:37,697 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 19:11:37,697 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 19:11:37,697 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 19:11:37,697 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 19:11:37,698 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 19:11:37,698 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-11-29 19:11:37,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 19:11:37,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 19:11:37,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 19:11:37,883 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 19:11:37,883 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 19:11:37,884 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/01b_inc.i [2023-11-29 19:11:38,813 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 19:11:38,971 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 19:11:38,971 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/01b_inc.i [2023-11-29 19:11:38,981 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7368fb64/625a2c551a4e45f4a8c89c31716fd360/FLAG31c8562b5 [2023-11-29 19:11:39,377 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7368fb64/625a2c551a4e45f4a8c89c31716fd360 [2023-11-29 19:11:39,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 19:11:39,381 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-29 19:11:39,382 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 19:11:39,382 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 19:11:39,384 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 19:11:39,385 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:11:39" (1/1) ... [2023-11-29 19:11:39,385 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b882e66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:39, skipping insertion in model container [2023-11-29 19:11:39,385 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:11:39" (1/1) ... [2023-11-29 19:11:39,416 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 19:11:39,591 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/01b_inc.i[31005,31018] [2023-11-29 19:11:39,599 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 19:11:39,607 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 19:11:39,649 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/01b_inc.i[31005,31018] [2023-11-29 19:11:39,651 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 19:11:39,673 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 19:11:39,673 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 19:11:39,678 INFO L206 MainTranslator]: Completed translation [2023-11-29 19:11:39,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:39 WrapperNode [2023-11-29 19:11:39,678 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 19:11:39,679 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 19:11:39,679 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 19:11:39,679 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 19:11:39,683 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:39" (1/1) ... [2023-11-29 19:11:39,702 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:39" (1/1) ... [2023-11-29 19:11:39,718 INFO L138 Inliner]: procedures = 172, calls = 19, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 61 [2023-11-29 19:11:39,718 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 19:11:39,718 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 19:11:39,719 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 19:11:39,719 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 19:11:39,723 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:39" (1/1) ... [2023-11-29 19:11:39,723 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:39" (1/1) ... [2023-11-29 19:11:39,727 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:39" (1/1) ... [2023-11-29 19:11:39,728 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:39" (1/1) ... [2023-11-29 19:11:39,740 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:39" (1/1) ... [2023-11-29 19:11:39,742 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:39" (1/1) ... [2023-11-29 19:11:39,742 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:39" (1/1) ... [2023-11-29 19:11:39,743 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:39" (1/1) ... [2023-11-29 19:11:39,744 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 19:11:39,745 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 19:11:39,745 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 19:11:39,745 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 19:11:39,745 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:39" (1/1) ... [2023-11-29 19:11:39,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 19:11:39,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 19:11:39,768 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-29 19:11:39,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-29 19:11:39,785 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-29 19:11:39,785 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-29 19:11:39,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 19:11:39,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 19:11:39,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 19:11:39,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 19:11:39,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 19:11:39,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 19:11:39,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 19:11:39,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 19:11:39,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 19:11:39,788 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 19:11:39,899 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 19:11:39,900 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 19:11:40,017 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 19:11:40,053 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 19:11:40,053 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 19:11:40,054 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:11:40 BoogieIcfgContainer [2023-11-29 19:11:40,054 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 19:11:40,056 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 19:11:40,056 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 19:11:40,057 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 19:11:40,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:11:39" (1/3) ... [2023-11-29 19:11:40,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43509fc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:11:40, skipping insertion in model container [2023-11-29 19:11:40,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:39" (2/3) ... [2023-11-29 19:11:40,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43509fc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:11:40, skipping insertion in model container [2023-11-29 19:11:40,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:11:40" (3/3) ... [2023-11-29 19:11:40,059 INFO L112 eAbstractionObserver]: Analyzing ICFG 01b_inc.i [2023-11-29 19:11:40,070 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 19:11:40,070 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 19:11:40,070 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 19:11:40,100 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 19:11:40,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 40 transitions, 84 flow [2023-11-29 19:11:40,139 INFO L124 PetriNetUnfolderBase]: 3/51 cut-off events. [2023-11-29 19:11:40,140 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 19:11:40,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 51 events. 3/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 27. Up to 4 conditions per place. [2023-11-29 19:11:40,142 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 40 transitions, 84 flow [2023-11-29 19:11:40,144 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 40 transitions, 84 flow [2023-11-29 19:11:40,151 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 19:11:40,155 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;@5433f361, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 19:11:40,155 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-29 19:11:40,163 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 19:11:40,163 INFO L124 PetriNetUnfolderBase]: 2/44 cut-off events. [2023-11-29 19:11:40,164 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 19:11:40,164 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:11:40,164 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:11:40,164 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 19:11:40,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:11:40,168 INFO L85 PathProgramCache]: Analyzing trace with hash 934036367, now seen corresponding path program 1 times [2023-11-29 19:11:40,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:11:40,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707439184] [2023-11-29 19:11:40,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:11:40,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:11:40,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:11:40,248 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 19:11:40,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:11:40,270 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 19:11:40,271 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-29 19:11:40,272 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-11-29 19:11:40,273 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-11-29 19:11:40,273 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-11-29 19:11:40,274 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 19:11:40,274 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-11-29 19:11:40,276 WARN L227 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 19:11:40,276 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-29 19:11:40,293 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 19:11:40,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 55 transitions, 120 flow [2023-11-29 19:11:40,309 INFO L124 PetriNetUnfolderBase]: 5/79 cut-off events. [2023-11-29 19:11:40,309 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 19:11:40,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 79 events. 5/79 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 148 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 52. Up to 6 conditions per place. [2023-11-29 19:11:40,311 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 55 transitions, 120 flow [2023-11-29 19:11:40,311 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 55 transitions, 120 flow [2023-11-29 19:11:40,313 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 19:11:40,313 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;@5433f361, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 19:11:40,314 INFO L363 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-29 19:11:40,322 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 19:11:40,322 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2023-11-29 19:11:40,322 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 19:11:40,322 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:11:40,323 INFO L232 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] [2023-11-29 19:11:40,323 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-29 19:11:40,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:11:40,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1143538982, now seen corresponding path program 1 times [2023-11-29 19:11:40,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:11:40,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341821651] [2023-11-29 19:11:40,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:11:40,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:11:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:11:40,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:11:40,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:11:40,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341821651] [2023-11-29 19:11:40,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341821651] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:11:40,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:11:40,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 19:11:40,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385213993] [2023-11-29 19:11:40,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:11:40,591 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 19:11:40,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:11:40,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 19:11:40,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 19:11:40,616 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 55 [2023-11-29 19:11:40,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:11:40,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:11:40,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 55 [2023-11-29 19:11:40,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:11:40,796 INFO L124 PetriNetUnfolderBase]: 85/307 cut-off events. [2023-11-29 19:11:40,797 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2023-11-29 19:11:40,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 307 events. 85/307 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1525 event pairs, 37 based on Foata normal form. 122/390 useless extension candidates. Maximal degree in co-relation 416. Up to 69 conditions per place. [2023-11-29 19:11:40,801 INFO L140 encePairwiseOnDemand]: 45/55 looper letters, 40 selfloop transitions, 9 changer transitions 0/75 dead transitions. [2023-11-29 19:11:40,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 75 transitions, 268 flow [2023-11-29 19:11:40,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 19:11:40,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 19:11:40,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 249 transitions. [2023-11-29 19:11:40,813 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7545454545454545 [2023-11-29 19:11:40,813 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 249 transitions. [2023-11-29 19:11:40,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 249 transitions. [2023-11-29 19:11:40,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:11:40,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 249 transitions. [2023-11-29 19:11:40,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 41.5) internal successors, (249), 6 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:11:40,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 55.0) internal successors, (385), 7 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:11:40,824 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 55.0) internal successors, (385), 7 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:11:40,826 INFO L307 CegarLoopForPetriNet]: 57 programPoint places, -1 predicate places. [2023-11-29 19:11:40,826 INFO L500 AbstractCegarLoop]: Abstraction has has 56 places, 75 transitions, 268 flow [2023-11-29 19:11:40,827 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:11:40,827 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:11:40,827 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:11:40,827 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 19:11:40,827 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-29 19:11:40,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:11:40,828 INFO L85 PathProgramCache]: Analyzing trace with hash 574096670, now seen corresponding path program 1 times [2023-11-29 19:11:40,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:11:40,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204013545] [2023-11-29 19:11:40,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:11:40,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:11:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:11:40,849 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 19:11:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:11:40,868 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 19:11:40,868 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-29 19:11:40,868 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-11-29 19:11:40,869 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-11-29 19:11:40,871 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-11-29 19:11:40,871 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-11-29 19:11:40,871 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 19:11:40,872 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-29 19:11:40,872 WARN L227 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 19:11:40,872 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-29 19:11:40,898 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 19:11:40,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 70 transitions, 158 flow [2023-11-29 19:11:40,912 INFO L124 PetriNetUnfolderBase]: 7/107 cut-off events. [2023-11-29 19:11:40,912 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-29 19:11:40,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 107 events. 7/107 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 234 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 83. Up to 8 conditions per place. [2023-11-29 19:11:40,915 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 70 transitions, 158 flow [2023-11-29 19:11:40,922 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 70 transitions, 158 flow [2023-11-29 19:11:40,924 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 19:11:40,925 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;@5433f361, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 19:11:40,925 INFO L363 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-29 19:11:40,927 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 19:11:40,928 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2023-11-29 19:11:40,928 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 19:11:40,928 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:11:40,928 INFO L232 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] [2023-11-29 19:11:40,929 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-29 19:11:40,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:11:40,931 INFO L85 PathProgramCache]: Analyzing trace with hash -374529996, now seen corresponding path program 1 times [2023-11-29 19:11:40,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:11:40,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087178909] [2023-11-29 19:11:40,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:11:40,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:11:40,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:11:41,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:11:41,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:11:41,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087178909] [2023-11-29 19:11:41,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087178909] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:11:41,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:11:41,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 19:11:41,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579191098] [2023-11-29 19:11:41,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:11:41,083 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 19:11:41,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:11:41,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 19:11:41,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 19:11:41,084 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2023-11-29 19:11:41,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 70 transitions, 158 flow. Second operand has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:11:41,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:11:41,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2023-11-29 19:11:41,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:11:41,551 INFO L124 PetriNetUnfolderBase]: 2447/4856 cut-off events. [2023-11-29 19:11:41,552 INFO L125 PetriNetUnfolderBase]: For 712/712 co-relation queries the response was YES. [2023-11-29 19:11:41,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9269 conditions, 4856 events. 2447/4856 cut-off events. For 712/712 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 37899 event pairs, 845 based on Foata normal form. 1527/5579 useless extension candidates. Maximal degree in co-relation 8051. Up to 1793 conditions per place. [2023-11-29 19:11:41,586 INFO L140 encePairwiseOnDemand]: 58/70 looper letters, 89 selfloop transitions, 12 changer transitions 0/132 dead transitions. [2023-11-29 19:11:41,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 132 transitions, 522 flow [2023-11-29 19:11:41,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 19:11:41,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 19:11:41,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 333 transitions. [2023-11-29 19:11:41,589 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7928571428571428 [2023-11-29 19:11:41,589 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 333 transitions. [2023-11-29 19:11:41,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 333 transitions. [2023-11-29 19:11:41,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:11:41,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 333 transitions. [2023-11-29 19:11:41,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 55.5) internal successors, (333), 6 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:11:41,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:11:41,593 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:11:41,594 INFO L307 CegarLoopForPetriNet]: 73 programPoint places, -1 predicate places. [2023-11-29 19:11:41,594 INFO L500 AbstractCegarLoop]: Abstraction has has 72 places, 132 transitions, 522 flow [2023-11-29 19:11:41,595 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:11:41,595 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:11:41,595 INFO L232 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, 1, 1, 1, 1, 1] [2023-11-29 19:11:41,595 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 19:11:41,595 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-29 19:11:41,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:11:41,595 INFO L85 PathProgramCache]: Analyzing trace with hash -848711756, now seen corresponding path program 1 times [2023-11-29 19:11:41,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:11:41,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339967881] [2023-11-29 19:11:41,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:11:41,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:11:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:11:41,713 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 19:11:41,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:11:41,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339967881] [2023-11-29 19:11:41,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339967881] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:11:41,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:11:41,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 19:11:41,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480038069] [2023-11-29 19:11:41,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:11:41,714 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 19:11:41,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:11:41,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 19:11:41,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 19:11:41,716 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2023-11-29 19:11:41,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 132 transitions, 522 flow. Second operand has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:11:41,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:11:41,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2023-11-29 19:11:41,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:11:42,264 INFO L124 PetriNetUnfolderBase]: 3422/6967 cut-off events. [2023-11-29 19:11:42,264 INFO L125 PetriNetUnfolderBase]: For 979/1080 co-relation queries the response was YES. [2023-11-29 19:11:42,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18655 conditions, 6967 events. 3422/6967 cut-off events. For 979/1080 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 58668 event pairs, 817 based on Foata normal form. 0/5846 useless extension candidates. Maximal degree in co-relation 15258. Up to 2718 conditions per place. [2023-11-29 19:11:42,382 INFO L140 encePairwiseOnDemand]: 63/70 looper letters, 174 selfloop transitions, 21 changer transitions 0/227 dead transitions. [2023-11-29 19:11:42,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 227 transitions, 1325 flow [2023-11-29 19:11:42,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 19:11:42,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 19:11:42,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 317 transitions. [2023-11-29 19:11:42,384 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7547619047619047 [2023-11-29 19:11:42,384 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 317 transitions. [2023-11-29 19:11:42,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 317 transitions. [2023-11-29 19:11:42,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:11:42,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 317 transitions. [2023-11-29 19:11:42,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 52.833333333333336) internal successors, (317), 6 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:11:42,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:11:42,386 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:11:42,387 INFO L307 CegarLoopForPetriNet]: 73 programPoint places, 4 predicate places. [2023-11-29 19:11:42,387 INFO L500 AbstractCegarLoop]: Abstraction has has 77 places, 227 transitions, 1325 flow [2023-11-29 19:11:42,387 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:11:42,388 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:11:42,388 INFO L232 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:11:42,388 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 19:11:42,388 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-29 19:11:42,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:11:42,388 INFO L85 PathProgramCache]: Analyzing trace with hash -2013785717, now seen corresponding path program 1 times [2023-11-29 19:11:42,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:11:42,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860817161] [2023-11-29 19:11:42,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:11:42,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:11:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:11:42,400 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 19:11:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:11:42,414 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 19:11:42,415 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-29 19:11:42,415 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-29 19:11:42,415 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-29 19:11:42,415 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-11-29 19:11:42,415 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-11-29 19:11:42,415 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-11-29 19:11:42,415 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 19:11:42,415 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-29 19:11:42,416 WARN L227 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 19:11:42,416 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-29 19:11:42,442 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 19:11:42,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 85 transitions, 198 flow [2023-11-29 19:11:42,458 INFO L124 PetriNetUnfolderBase]: 9/135 cut-off events. [2023-11-29 19:11:42,458 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-29 19:11:42,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 135 events. 9/135 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 293 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 115. Up to 10 conditions per place. [2023-11-29 19:11:42,459 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 85 transitions, 198 flow [2023-11-29 19:11:42,460 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 85 transitions, 198 flow [2023-11-29 19:11:42,461 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 19:11:42,462 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;@5433f361, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 19:11:42,462 INFO L363 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-29 19:11:42,465 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 19:11:42,465 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2023-11-29 19:11:42,465 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 19:11:42,466 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:11:42,468 INFO L232 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] [2023-11-29 19:11:42,468 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-29 19:11:42,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:11:42,469 INFO L85 PathProgramCache]: Analyzing trace with hash -52377406, now seen corresponding path program 1 times [2023-11-29 19:11:42,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:11:42,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774916783] [2023-11-29 19:11:42,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:11:42,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:11:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:11:42,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:11:42,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:11:42,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774916783] [2023-11-29 19:11:42,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774916783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:11:42,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:11:42,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 19:11:42,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251728689] [2023-11-29 19:11:42,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:11:42,555 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 19:11:42,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:11:42,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 19:11:42,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 19:11:42,556 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 85 [2023-11-29 19:11:42,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 85 transitions, 198 flow. Second operand has 5 states, 5 states have (on average 42.8) internal successors, (214), 5 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:11:42,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:11:42,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 85 [2023-11-29 19:11:42,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:11:46,999 INFO L124 PetriNetUnfolderBase]: 44351/70776 cut-off events. [2023-11-29 19:11:46,999 INFO L125 PetriNetUnfolderBase]: For 15379/15379 co-relation queries the response was YES. [2023-11-29 19:11:47,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138802 conditions, 70776 events. 44351/70776 cut-off events. For 15379/15379 co-relation queries the response was YES. Maximal size of possible extension queue 3210. Compared 618171 event pairs, 21629 based on Foata normal form. 17297/74850 useless extension candidates. Maximal degree in co-relation 58478. Up to 30317 conditions per place. [2023-11-29 19:11:47,640 INFO L140 encePairwiseOnDemand]: 71/85 looper letters, 126 selfloop transitions, 15 changer transitions 0/177 dead transitions. [2023-11-29 19:11:47,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 177 transitions, 738 flow [2023-11-29 19:11:47,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 19:11:47,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 19:11:47,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 405 transitions. [2023-11-29 19:11:47,642 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7941176470588235 [2023-11-29 19:11:47,642 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 405 transitions. [2023-11-29 19:11:47,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 405 transitions. [2023-11-29 19:11:47,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:11:47,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 405 transitions. [2023-11-29 19:11:47,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 67.5) internal successors, (405), 6 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:11:47,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:11:47,645 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:11:47,645 INFO L307 CegarLoopForPetriNet]: 89 programPoint places, -1 predicate places. [2023-11-29 19:11:47,645 INFO L500 AbstractCegarLoop]: Abstraction has has 88 places, 177 transitions, 738 flow [2023-11-29 19:11:47,646 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.8) internal successors, (214), 5 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:11:47,646 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:11:47,646 INFO L232 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, 1, 1, 1, 1, 1] [2023-11-29 19:11:47,646 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 19:11:47,646 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-29 19:11:47,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:11:47,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1757282327, now seen corresponding path program 1 times [2023-11-29 19:11:47,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:11:47,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615635347] [2023-11-29 19:11:47,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:11:47,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:11:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:11:47,745 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 19:11:47,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:11:47,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615635347] [2023-11-29 19:11:47,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615635347] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:11:47,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:11:47,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 19:11:47,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713236568] [2023-11-29 19:11:47,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:11:47,746 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 19:11:47,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:11:47,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 19:11:47,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 19:11:47,747 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 85 [2023-11-29 19:11:47,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 177 transitions, 738 flow. Second operand has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:11:47,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:11:47,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 85 [2023-11-29 19:11:47,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:11:55,155 INFO L124 PetriNetUnfolderBase]: 70538/116166 cut-off events. [2023-11-29 19:11:55,156 INFO L125 PetriNetUnfolderBase]: For 24019/24768 co-relation queries the response was YES. [2023-11-29 19:11:55,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322131 conditions, 116166 events. 70538/116166 cut-off events. For 24019/24768 co-relation queries the response was YES. Maximal size of possible extension queue 4940. Compared 1133962 event pairs, 18874 based on Foata normal form. 57/95630 useless extension candidates. Maximal degree in co-relation 60471. Up to 51002 conditions per place. [2023-11-29 19:11:56,332 INFO L140 encePairwiseOnDemand]: 77/85 looper letters, 280 selfloop transitions, 27 changer transitions 0/344 dead transitions. [2023-11-29 19:11:56,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 344 transitions, 2116 flow [2023-11-29 19:11:56,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 19:11:56,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 19:11:56,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 387 transitions. [2023-11-29 19:11:56,335 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7588235294117647 [2023-11-29 19:11:56,335 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 387 transitions. [2023-11-29 19:11:56,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 387 transitions. [2023-11-29 19:11:56,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:11:56,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 387 transitions. [2023-11-29 19:11:56,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 64.5) internal successors, (387), 6 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:11:56,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:11:56,337 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:11:56,339 INFO L307 CegarLoopForPetriNet]: 89 programPoint places, 4 predicate places. [2023-11-29 19:11:56,339 INFO L500 AbstractCegarLoop]: Abstraction has has 93 places, 344 transitions, 2116 flow [2023-11-29 19:11:56,339 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:11:56,339 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:11:56,339 INFO L232 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:11:56,339 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 19:11:56,339 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-29 19:11:56,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:11:56,340 INFO L85 PathProgramCache]: Analyzing trace with hash -207677660, now seen corresponding path program 1 times [2023-11-29 19:11:56,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:11:56,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511306181] [2023-11-29 19:11:56,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:11:56,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:11:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:11:56,465 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 19:11:56,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:11:56,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511306181] [2023-11-29 19:11:56,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511306181] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:11:56,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:11:56,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 19:11:56,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076560218] [2023-11-29 19:11:56,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:11:56,466 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 19:11:56,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:11:56,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 19:11:56,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 19:11:56,467 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 85 [2023-11-29 19:11:56,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 344 transitions, 2116 flow. Second operand has 7 states, 7 states have (on average 42.142857142857146) internal successors, (295), 7 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:11:56,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:11:56,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 85 [2023-11-29 19:11:56,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:12:05,754 INFO L124 PetriNetUnfolderBase]: 72477/120772 cut-off events. [2023-11-29 19:12:05,754 INFO L125 PetriNetUnfolderBase]: For 25219/29815 co-relation queries the response was YES. [2023-11-29 19:12:06,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 435253 conditions, 120772 events. 72477/120772 cut-off events. For 25219/29815 co-relation queries the response was YES. Maximal size of possible extension queue 5241. Compared 1201972 event pairs, 22763 based on Foata normal form. 15/100089 useless extension candidates. Maximal degree in co-relation 91934. Up to 56577 conditions per place. [2023-11-29 19:12:07,211 INFO L140 encePairwiseOnDemand]: 72/85 looper letters, 343 selfloop transitions, 34 changer transitions 0/412 dead transitions. [2023-11-29 19:12:07,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 412 transitions, 3306 flow [2023-11-29 19:12:07,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 19:12:07,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 19:12:07,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 581 transitions. [2023-11-29 19:12:07,213 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7594771241830065 [2023-11-29 19:12:07,213 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 581 transitions. [2023-11-29 19:12:07,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 581 transitions. [2023-11-29 19:12:07,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:12:07,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 581 transitions. [2023-11-29 19:12:07,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 64.55555555555556) internal successors, (581), 9 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:12:07,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:12:07,215 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:12:07,216 INFO L307 CegarLoopForPetriNet]: 89 programPoint places, 12 predicate places. [2023-11-29 19:12:07,216 INFO L500 AbstractCegarLoop]: Abstraction has has 101 places, 412 transitions, 3306 flow [2023-11-29 19:12:07,216 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 42.142857142857146) internal successors, (295), 7 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:12:07,216 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:12:07,216 INFO L232 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:12:07,216 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 19:12:07,216 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-29 19:12:07,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:12:07,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1057076346, now seen corresponding path program 2 times [2023-11-29 19:12:07,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:12:07,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343827885] [2023-11-29 19:12:07,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:12:07,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:12:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:12:07,245 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 19:12:07,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:12:07,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343827885] [2023-11-29 19:12:07,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343827885] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:12:07,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:12:07,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 19:12:07,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982063515] [2023-11-29 19:12:07,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:12:07,246 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 19:12:07,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:12:07,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 19:12:07,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 19:12:07,247 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 85 [2023-11-29 19:12:07,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 412 transitions, 3306 flow. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:12:07,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:12:07,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 85 [2023-11-29 19:12:07,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:12:09,082 INFO L124 PetriNetUnfolderBase]: 13353/23215 cut-off events. [2023-11-29 19:12:09,082 INFO L125 PetriNetUnfolderBase]: For 16071/17427 co-relation queries the response was YES. [2023-11-29 19:12:09,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102789 conditions, 23215 events. 13353/23215 cut-off events. For 16071/17427 co-relation queries the response was YES. Maximal size of possible extension queue 924. Compared 193880 event pairs, 2978 based on Foata normal form. 1852/18640 useless extension candidates. Maximal degree in co-relation 35679. Up to 10995 conditions per place. [2023-11-29 19:12:09,272 INFO L140 encePairwiseOnDemand]: 73/85 looper letters, 149 selfloop transitions, 78 changer transitions 0/404 dead transitions. [2023-11-29 19:12:09,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 404 transitions, 3895 flow [2023-11-29 19:12:09,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 19:12:09,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 19:12:09,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 214 transitions. [2023-11-29 19:12:09,274 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8392156862745098 [2023-11-29 19:12:09,274 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 214 transitions. [2023-11-29 19:12:09,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 214 transitions. [2023-11-29 19:12:09,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:12:09,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 214 transitions. [2023-11-29 19:12:09,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:12:09,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:12:09,275 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:12:09,275 INFO L307 CegarLoopForPetriNet]: 89 programPoint places, 14 predicate places. [2023-11-29 19:12:09,275 INFO L500 AbstractCegarLoop]: Abstraction has has 103 places, 404 transitions, 3895 flow [2023-11-29 19:12:09,275 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:12:09,275 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:12:09,276 INFO L232 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:12:09,276 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 19:12:09,276 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-29 19:12:09,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:12:09,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1268337372, now seen corresponding path program 1 times [2023-11-29 19:12:09,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:12:09,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632976931] [2023-11-29 19:12:09,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:12:09,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:12:09,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:12:09,368 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 19:12:09,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:12:09,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632976931] [2023-11-29 19:12:09,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632976931] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:12:09,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:12:09,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 19:12:09,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734464042] [2023-11-29 19:12:09,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:12:09,368 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 19:12:09,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:12:09,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 19:12:09,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 19:12:09,369 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 85 [2023-11-29 19:12:09,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 404 transitions, 3895 flow. Second operand has 7 states, 7 states have (on average 42.142857142857146) internal successors, (295), 7 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:12:09,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:12:09,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 85 [2023-11-29 19:12:09,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:12:11,730 INFO L124 PetriNetUnfolderBase]: 13767/24053 cut-off events. [2023-11-29 19:12:11,731 INFO L125 PetriNetUnfolderBase]: For 13627/15019 co-relation queries the response was YES. [2023-11-29 19:12:11,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127185 conditions, 24053 events. 13767/24053 cut-off events. For 13627/15019 co-relation queries the response was YES. Maximal size of possible extension queue 936. Compared 202899 event pairs, 3361 based on Foata normal form. 42/17357 useless extension candidates. Maximal degree in co-relation 30577. Up to 10696 conditions per place. [2023-11-29 19:12:11,932 INFO L140 encePairwiseOnDemand]: 72/85 looper letters, 387 selfloop transitions, 29 changer transitions 0/451 dead transitions. [2023-11-29 19:12:11,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 451 transitions, 5215 flow [2023-11-29 19:12:11,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 19:12:11,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 19:12:11,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 536 transitions. [2023-11-29 19:12:11,934 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7006535947712418 [2023-11-29 19:12:11,934 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 536 transitions. [2023-11-29 19:12:11,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 536 transitions. [2023-11-29 19:12:11,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:12:11,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 536 transitions. [2023-11-29 19:12:11,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 59.55555555555556) internal successors, (536), 9 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:12:11,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:12:11,938 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:12:11,940 INFO L307 CegarLoopForPetriNet]: 89 programPoint places, 22 predicate places. [2023-11-29 19:12:11,940 INFO L500 AbstractCegarLoop]: Abstraction has has 111 places, 451 transitions, 5215 flow [2023-11-29 19:12:11,940 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 42.142857142857146) internal successors, (295), 7 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:12:11,940 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:12:11,940 INFO L232 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, 1, 1, 1, 1, 1] [2023-11-29 19:12:11,940 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 19:12:11,940 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-29 19:12:11,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:12:11,940 INFO L85 PathProgramCache]: Analyzing trace with hash 2107260899, now seen corresponding path program 1 times [2023-11-29 19:12:11,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:12:11,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803859805] [2023-11-29 19:12:11,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:12:11,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:12:11,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:12:11,998 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 19:12:11,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:12:11,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803859805] [2023-11-29 19:12:11,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803859805] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:12:11,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:12:11,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 19:12:11,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258861861] [2023-11-29 19:12:11,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:12:11,999 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 19:12:11,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:12:12,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 19:12:12,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 19:12:12,000 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 85 [2023-11-29 19:12:12,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 451 transitions, 5215 flow. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:12:12,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:12:12,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 85 [2023-11-29 19:12:12,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:12:14,627 INFO L124 PetriNetUnfolderBase]: 16710/29146 cut-off events. [2023-11-29 19:12:14,627 INFO L125 PetriNetUnfolderBase]: For 24616/27783 co-relation queries the response was YES. [2023-11-29 19:12:14,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173978 conditions, 29146 events. 16710/29146 cut-off events. For 24616/27783 co-relation queries the response was YES. Maximal size of possible extension queue 1160. Compared 249687 event pairs, 3180 based on Foata normal form. 39/21261 useless extension candidates. Maximal degree in co-relation 35007. Up to 12371 conditions per place. [2023-11-29 19:12:15,152 INFO L140 encePairwiseOnDemand]: 77/85 looper letters, 684 selfloop transitions, 43 changer transitions 0/771 dead transitions. [2023-11-29 19:12:15,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 771 transitions, 10584 flow [2023-11-29 19:12:15,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 19:12:15,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 19:12:15,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 373 transitions. [2023-11-29 19:12:15,154 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7313725490196078 [2023-11-29 19:12:15,154 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 373 transitions. [2023-11-29 19:12:15,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 373 transitions. [2023-11-29 19:12:15,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:12:15,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 373 transitions. [2023-11-29 19:12:15,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 62.166666666666664) internal successors, (373), 6 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:12:15,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:12:15,156 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:12:15,156 INFO L307 CegarLoopForPetriNet]: 89 programPoint places, 27 predicate places. [2023-11-29 19:12:15,156 INFO L500 AbstractCegarLoop]: Abstraction has has 116 places, 771 transitions, 10584 flow [2023-11-29 19:12:15,156 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:12:15,157 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:12:15,157 INFO L232 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] [2023-11-29 19:12:15,157 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 19:12:15,157 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-29 19:12:15,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:12:15,157 INFO L85 PathProgramCache]: Analyzing trace with hash 942741881, now seen corresponding path program 1 times [2023-11-29 19:12:15,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:12:15,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913973935] [2023-11-29 19:12:15,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:12:15,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:12:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:12:15,176 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 19:12:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:12:15,183 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 19:12:15,183 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-29 19:12:15,183 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-11-29 19:12:15,183 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-11-29 19:12:15,183 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-11-29 19:12:15,183 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-11-29 19:12:15,183 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-11-29 19:12:15,183 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-29 19:12:15,183 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 19:12:15,184 INFO L457 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-11-29 19:12:15,184 WARN L227 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 19:12:15,184 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-11-29 19:12:15,198 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 19:12:15,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 100 transitions, 240 flow [2023-11-29 19:12:15,208 INFO L124 PetriNetUnfolderBase]: 11/163 cut-off events. [2023-11-29 19:12:15,208 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-29 19:12:15,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 163 events. 11/163 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 375 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 148. Up to 12 conditions per place. [2023-11-29 19:12:15,209 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 100 transitions, 240 flow [2023-11-29 19:12:15,209 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 100 transitions, 240 flow [2023-11-29 19:12:15,210 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 19:12:15,210 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;@5433f361, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 19:12:15,210 INFO L363 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-29 19:12:15,212 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 19:12:15,212 INFO L124 PetriNetUnfolderBase]: 2/47 cut-off events. [2023-11-29 19:12:15,212 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 19:12:15,212 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:12:15,213 INFO L232 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] [2023-11-29 19:12:15,213 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 19:12:15,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:12:15,213 INFO L85 PathProgramCache]: Analyzing trace with hash 2063452624, now seen corresponding path program 1 times [2023-11-29 19:12:15,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:12:15,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014214045] [2023-11-29 19:12:15,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:12:15,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:12:15,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:12:15,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:12:15,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:12:15,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014214045] [2023-11-29 19:12:15,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014214045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:12:15,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:12:15,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 19:12:15,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117062270] [2023-11-29 19:12:15,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:12:15,268 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 19:12:15,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:12:15,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 19:12:15,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 19:12:15,270 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 100 [2023-11-29 19:12:15,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 100 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 47.8) internal successors, (239), 5 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:12:15,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:12:15,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 100 [2023-11-29 19:12:15,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:13:22,393 INFO L124 PetriNetUnfolderBase]: 654959/927368 cut-off events. [2023-11-29 19:13:22,394 INFO L125 PetriNetUnfolderBase]: For 256999/256999 co-relation queries the response was YES. [2023-11-29 19:13:26,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1855755 conditions, 927368 events. 654959/927368 cut-off events. For 256999/256999 co-relation queries the response was YES. Maximal size of possible extension queue 32936. Compared 8453231 event pairs, 336661 based on Foata normal form. 187431/934973 useless extension candidates. Maximal degree in co-relation 772398. Up to 428973 conditions per place. [2023-11-29 19:13:32,765 INFO L140 encePairwiseOnDemand]: 84/100 looper letters, 163 selfloop transitions, 18 changer transitions 0/222 dead transitions. [2023-11-29 19:13:32,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 222 transitions, 964 flow [2023-11-29 19:13:32,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 19:13:32,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 19:13:32,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 477 transitions. [2023-11-29 19:13:32,772 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.795 [2023-11-29 19:13:32,772 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 477 transitions. [2023-11-29 19:13:32,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 477 transitions. [2023-11-29 19:13:32,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:13:32,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 477 transitions. [2023-11-29 19:13:32,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 79.5) internal successors, (477), 6 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:13:32,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:13:32,779 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:13:32,780 INFO L307 CegarLoopForPetriNet]: 105 programPoint places, -1 predicate places. [2023-11-29 19:13:32,786 INFO L500 AbstractCegarLoop]: Abstraction has has 104 places, 222 transitions, 964 flow [2023-11-29 19:13:32,786 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.8) internal successors, (239), 5 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:13:32,786 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:13:32,786 INFO L232 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, 1, 1, 1, 1, 1] [2023-11-29 19:13:32,787 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 19:13:32,787 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 19:13:32,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:13:32,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1993659405, now seen corresponding path program 1 times [2023-11-29 19:13:32,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:13:32,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125211095] [2023-11-29 19:13:32,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:13:32,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:13:32,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:13:32,876 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 19:13:32,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:13:32,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125211095] [2023-11-29 19:13:32,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125211095] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:13:32,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:13:32,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 19:13:32,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774404534] [2023-11-29 19:13:32,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:13:32,877 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 19:13:32,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:13:32,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 19:13:32,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 19:13:32,878 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 100 [2023-11-29 19:13:32,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 222 transitions, 964 flow. Second operand has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:13:32,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:13:32,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 100 [2023-11-29 19:13:32,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand