/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/pthread-ext/01b_inc-pthread.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 14:51:26,867 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 14:51:26,927 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-12-09 14:51:26,950 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 14:51:26,951 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 14:51:26,951 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 14:51:26,952 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 14:51:26,952 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 14:51:26,952 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 14:51:26,955 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 14:51:26,956 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 14:51:26,956 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 14:51:26,956 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 14:51:26,957 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 14:51:26,957 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 14:51:26,957 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 14:51:26,957 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 14:51:26,957 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 14:51:26,958 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 14:51:26,958 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 14:51:26,958 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 14:51:26,958 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 14:51:26,959 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 14:51:26,959 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 14:51:26,959 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 14:51:26,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:51:26,960 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 14:51:26,960 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 14:51:26,960 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 14:51:26,961 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 14:51:26,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 14:51:26,961 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 14:51:26,961 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 14:51:26,962 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 14:51:27,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 14:51:27,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 14:51:27,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 14:51:27,160 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 14:51:27,160 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 14:51:27,161 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/01b_inc-pthread.i [2023-12-09 14:51:28,144 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 14:51:28,351 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 14:51:28,352 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/01b_inc-pthread.i [2023-12-09 14:51:28,377 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4eb76846f/de6bfcdf66064696b57c8475610dfd56/FLAG042a9e8bb [2023-12-09 14:51:28,389 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4eb76846f/de6bfcdf66064696b57c8475610dfd56 [2023-12-09 14:51:28,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 14:51:28,392 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 14:51:28,394 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 14:51:28,394 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 14:51:28,397 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 14:51:28,398 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:51:28" (1/1) ... [2023-12-09 14:51:28,399 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d352ba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:28, skipping insertion in model container [2023-12-09 14:51:28,399 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:51:28" (1/1) ... [2023-12-09 14:51:28,444 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 14:51:28,672 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-pthread.i[30747,30760] [2023-12-09 14:51:28,681 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:51:28,693 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 14:51:28,754 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-pthread.i[30747,30760] [2023-12-09 14:51:28,763 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:51:28,811 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 14:51:28,812 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 14:51:28,817 INFO L206 MainTranslator]: Completed translation [2023-12-09 14:51:28,817 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:28 WrapperNode [2023-12-09 14:51:28,817 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 14:51:28,818 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 14:51:28,818 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 14:51:28,818 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 14:51:28,823 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:28" (1/1) ... [2023-12-09 14:51:28,832 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:28" (1/1) ... [2023-12-09 14:51:28,847 INFO L138 Inliner]: procedures = 164, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2023-12-09 14:51:28,847 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 14:51:28,848 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 14:51:28,848 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 14:51:28,848 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 14:51:28,853 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:28" (1/1) ... [2023-12-09 14:51:28,853 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:28" (1/1) ... [2023-12-09 14:51:28,868 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:28" (1/1) ... [2023-12-09 14:51:28,868 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:28" (1/1) ... [2023-12-09 14:51:28,870 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:28" (1/1) ... [2023-12-09 14:51:28,872 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:28" (1/1) ... [2023-12-09 14:51:28,873 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:28" (1/1) ... [2023-12-09 14:51:28,874 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:28" (1/1) ... [2023-12-09 14:51:28,875 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 14:51:28,876 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 14:51:28,876 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 14:51:28,876 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 14:51:28,877 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:28" (1/1) ... [2023-12-09 14:51:28,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:51:28,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:51:28,949 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-09 14:51:28,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-09 14:51:28,978 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-12-09 14:51:28,979 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-12-09 14:51:28,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 14:51:28,979 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-12-09 14:51:28,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-09 14:51:28,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 14:51:28,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 14:51:28,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 14:51:28,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 14:51:28,980 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-09 14:51:28,980 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-12-09 14:51:28,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 14:51:28,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 14:51:28,981 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-09 14:51:29,100 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 14:51:29,102 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 14:51:29,242 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 14:51:29,276 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 14:51:29,276 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-09 14:51:29,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:51:29 BoogieIcfgContainer [2023-12-09 14:51:29,277 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 14:51:29,279 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 14:51:29,279 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 14:51:29,281 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 14:51:29,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:51:28" (1/3) ... [2023-12-09 14:51:29,282 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f49ab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:51:29, skipping insertion in model container [2023-12-09 14:51:29,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:28" (2/3) ... [2023-12-09 14:51:29,282 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f49ab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:51:29, skipping insertion in model container [2023-12-09 14:51:29,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:51:29" (3/3) ... [2023-12-09 14:51:29,283 INFO L112 eAbstractionObserver]: Analyzing ICFG 01b_inc-pthread.i [2023-12-09 14:51:29,296 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 14:51:29,296 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 14:51:29,297 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 14:51:29,326 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:51:29,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 49 transitions, 102 flow [2023-12-09 14:51:29,373 INFO L124 PetriNetUnfolderBase]: 3/60 cut-off events. [2023-12-09 14:51:29,374 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-09 14:51:29,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 60 events. 3/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 30. Up to 4 conditions per place. [2023-12-09 14:51:29,377 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 49 transitions, 102 flow [2023-12-09 14:51:29,383 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 49 transitions, 102 flow [2023-12-09 14:51:29,396 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:51:29,400 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;@3b30eb95, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:51:29,401 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-09 14:51:29,417 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:51:29,417 INFO L124 PetriNetUnfolderBase]: 2/48 cut-off events. [2023-12-09 14:51:29,417 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-09 14:51:29,417 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:51:29,418 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:51:29,418 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-09 14:51:29,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:51:29,427 INFO L85 PathProgramCache]: Analyzing trace with hash -943060746, now seen corresponding path program 1 times [2023-12-09 14:51:29,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:51:29,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163478746] [2023-12-09 14:51:29,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:29,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:51:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:51:29,558 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 14:51:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:51:29,612 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 14:51:29,615 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 14:51:29,616 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-12-09 14:51:29,617 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-12-09 14:51:29,618 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-12-09 14:51:29,618 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 14:51:29,619 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-12-09 14:51:29,623 WARN L227 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 14:51:29,624 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-12-09 14:51:29,667 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:51:29,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 67 transitions, 144 flow [2023-12-09 14:51:29,685 INFO L124 PetriNetUnfolderBase]: 5/91 cut-off events. [2023-12-09 14:51:29,685 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 14:51:29,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 91 events. 5/91 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 176 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 61. Up to 6 conditions per place. [2023-12-09 14:51:29,686 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 67 transitions, 144 flow [2023-12-09 14:51:29,687 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 67 transitions, 144 flow [2023-12-09 14:51:29,691 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:51:29,692 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;@3b30eb95, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:51:29,692 INFO L363 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-12-09 14:51:29,722 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:51:29,722 INFO L124 PetriNetUnfolderBase]: 3/65 cut-off events. [2023-12-09 14:51:29,722 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-12-09 14:51:29,723 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:51:29,723 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:51:29,724 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-09 14:51:29,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:51:29,725 INFO L85 PathProgramCache]: Analyzing trace with hash 892800825, now seen corresponding path program 1 times [2023-12-09 14:51:29,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:51:29,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402898845] [2023-12-09 14:51:29,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:29,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:51:29,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:51:30,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:51:30,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:51:30,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402898845] [2023-12-09 14:51:30,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402898845] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:51:30,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:51:30,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-09 14:51:30,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907406013] [2023-12-09 14:51:30,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:51:30,105 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 14:51:30,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:51:30,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 14:51:30,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-09 14:51:30,131 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 67 [2023-12-09 14:51:30,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 67 transitions, 144 flow. Second operand has 5 states, 5 states have (on average 44.8) internal successors, (224), 5 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:30,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:51:30,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 67 [2023-12-09 14:51:30,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:51:30,300 INFO L124 PetriNetUnfolderBase]: 85/337 cut-off events. [2023-12-09 14:51:30,300 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-12-09 14:51:30,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 575 conditions, 337 events. 85/337 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1816 event pairs, 25 based on Foata normal form. 123/424 useless extension candidates. Maximal degree in co-relation 480. Up to 69 conditions per place. [2023-12-09 14:51:30,305 INFO L140 encePairwiseOnDemand]: 57/67 looper letters, 40 selfloop transitions, 9 changer transitions 0/87 dead transitions. [2023-12-09 14:51:30,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 87 transitions, 292 flow [2023-12-09 14:51:30,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-09 14:51:30,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-09 14:51:30,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 321 transitions. [2023-12-09 14:51:30,316 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7985074626865671 [2023-12-09 14:51:30,317 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 321 transitions. [2023-12-09 14:51:30,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 321 transitions. [2023-12-09 14:51:30,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:51:30,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 321 transitions. [2023-12-09 14:51:30,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 53.5) internal successors, (321), 6 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:30,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 67.0) internal successors, (469), 7 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:30,330 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 67.0) internal successors, (469), 7 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:30,333 INFO L308 CegarLoopForPetriNet]: 69 programPoint places, -1 predicate places. [2023-12-09 14:51:30,333 INFO L500 AbstractCegarLoop]: Abstraction has has 68 places, 87 transitions, 292 flow [2023-12-09 14:51:30,334 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.8) internal successors, (224), 5 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:30,334 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:51:30,334 INFO L233 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:51:30,334 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 14:51:30,334 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)] === [2023-12-09 14:51:30,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:51:30,335 INFO L85 PathProgramCache]: Analyzing trace with hash -327441808, now seen corresponding path program 1 times [2023-12-09 14:51:30,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:51:30,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200373359] [2023-12-09 14:51:30,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:30,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:51:30,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:51:30,359 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 14:51:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:51:30,379 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 14:51:30,380 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 14:51:30,380 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-12-09 14:51:30,381 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-12-09 14:51:30,381 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-12-09 14:51:30,381 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-12-09 14:51:30,381 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 14:51:30,381 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1] [2023-12-09 14:51:30,382 WARN L227 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 14:51:30,382 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-12-09 14:51:30,407 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:51:30,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 85 transitions, 188 flow [2023-12-09 14:51:30,424 INFO L124 PetriNetUnfolderBase]: 7/122 cut-off events. [2023-12-09 14:51:30,424 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-12-09 14:51:30,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 122 events. 7/122 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 269 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 95. Up to 8 conditions per place. [2023-12-09 14:51:30,427 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 85 transitions, 188 flow [2023-12-09 14:51:30,429 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 85 transitions, 188 flow [2023-12-09 14:51:30,430 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:51:30,431 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;@3b30eb95, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:51:30,431 INFO L363 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-12-09 14:51:30,437 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:51:30,438 INFO L124 PetriNetUnfolderBase]: 3/65 cut-off events. [2023-12-09 14:51:30,438 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-12-09 14:51:30,438 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:51:30,440 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:51:30,442 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-09 14:51:30,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:51:30,446 INFO L85 PathProgramCache]: Analyzing trace with hash -51062774, now seen corresponding path program 1 times [2023-12-09 14:51:30,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:51:30,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915847691] [2023-12-09 14:51:30,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:30,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:51:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:51:30,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:51:30,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:51:30,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915847691] [2023-12-09 14:51:30,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915847691] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:51:30,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:51:30,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-09 14:51:30,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973424534] [2023-12-09 14:51:30,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:51:30,588 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 14:51:30,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:51:30,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 14:51:30,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-09 14:51:30,590 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 85 [2023-12-09 14:51:30,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 85 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 52.8) internal successors, (264), 5 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:30,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:51:30,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 85 [2023-12-09 14:51:30,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:51:31,191 INFO L124 PetriNetUnfolderBase]: 2447/5331 cut-off events. [2023-12-09 14:51:31,191 INFO L125 PetriNetUnfolderBase]: For 712/712 co-relation queries the response was YES. [2023-12-09 14:51:31,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9744 conditions, 5331 events. 2447/5331 cut-off events. For 712/712 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 47124 event pairs, 845 based on Foata normal form. 1527/6053 useless extension candidates. Maximal degree in co-relation 8487. Up to 1793 conditions per place. [2023-12-09 14:51:31,232 INFO L140 encePairwiseOnDemand]: 73/85 looper letters, 89 selfloop transitions, 12 changer transitions 0/147 dead transitions. [2023-12-09 14:51:31,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 147 transitions, 552 flow [2023-12-09 14:51:31,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-09 14:51:31,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-09 14:51:31,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 423 transitions. [2023-12-09 14:51:31,235 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8294117647058824 [2023-12-09 14:51:31,235 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 423 transitions. [2023-12-09 14:51:31,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 423 transitions. [2023-12-09 14:51:31,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:51:31,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 423 transitions. [2023-12-09 14:51:31,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 70.5) internal successors, (423), 6 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:31,238 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) [2023-12-09 14:51:31,239 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) [2023-12-09 14:51:31,240 INFO L308 CegarLoopForPetriNet]: 88 programPoint places, -1 predicate places. [2023-12-09 14:51:31,240 INFO L500 AbstractCegarLoop]: Abstraction has has 87 places, 147 transitions, 552 flow [2023-12-09 14:51:31,240 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.8) internal successors, (264), 5 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:31,240 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:51:31,240 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:51:31,240 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 14:51:31,241 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-09 14:51:31,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:51:31,241 INFO L85 PathProgramCache]: Analyzing trace with hash -649578441, now seen corresponding path program 1 times [2023-12-09 14:51:31,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:51:31,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960987823] [2023-12-09 14:51:31,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:31,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:51:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:51:31,398 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-09 14:51:31,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:51:31,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960987823] [2023-12-09 14:51:31,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960987823] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:51:31,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:51:31,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-09 14:51:31,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317509583] [2023-12-09 14:51:31,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:51:31,401 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 14:51:31,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:51:31,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 14:51:31,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-09 14:51:31,403 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 85 [2023-12-09 14:51:31,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 147 transitions, 552 flow. Second operand has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:31,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:51:31,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 85 [2023-12-09 14:51:31,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:51:32,190 INFO L124 PetriNetUnfolderBase]: 3419/7566 cut-off events. [2023-12-09 14:51:32,190 INFO L125 PetriNetUnfolderBase]: For 1483/1594 co-relation queries the response was YES. [2023-12-09 14:51:32,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19252 conditions, 7566 events. 3419/7566 cut-off events. For 1483/1594 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 71165 event pairs, 830 based on Foata normal form. 3/6442 useless extension candidates. Maximal degree in co-relation 11830. Up to 2718 conditions per place. [2023-12-09 14:51:32,247 INFO L140 encePairwiseOnDemand]: 78/85 looper letters, 174 selfloop transitions, 21 changer transitions 0/242 dead transitions. [2023-12-09 14:51:32,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 242 transitions, 1355 flow [2023-12-09 14:51:32,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-09 14:51:32,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-09 14:51:32,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 407 transitions. [2023-12-09 14:51:32,249 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7980392156862746 [2023-12-09 14:51:32,250 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 407 transitions. [2023-12-09 14:51:32,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 407 transitions. [2023-12-09 14:51:32,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:51:32,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 407 transitions. [2023-12-09 14:51:32,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 67.83333333333333) internal successors, (407), 6 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:32,251 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) [2023-12-09 14:51:32,252 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) [2023-12-09 14:51:32,253 INFO L308 CegarLoopForPetriNet]: 88 programPoint places, 4 predicate places. [2023-12-09 14:51:32,254 INFO L500 AbstractCegarLoop]: Abstraction has has 92 places, 242 transitions, 1355 flow [2023-12-09 14:51:32,254 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:32,254 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:51:32,254 INFO L233 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:51:32,254 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-09 14:51:32,254 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)] === [2023-12-09 14:51:32,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:51:32,255 INFO L85 PathProgramCache]: Analyzing trace with hash -626276659, now seen corresponding path program 1 times [2023-12-09 14:51:32,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:51:32,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558460152] [2023-12-09 14:51:32,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:32,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:51:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:51:32,273 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 14:51:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:51:32,286 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 14:51:32,287 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 14:51:32,287 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-12-09 14:51:32,287 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-12-09 14:51:32,287 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-12-09 14:51:32,287 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-12-09 14:51:32,287 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-12-09 14:51:32,287 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-09 14:51:32,288 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-09 14:51:32,288 WARN L227 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 14:51:32,288 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-12-09 14:51:32,313 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:51:32,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 103 transitions, 234 flow [2023-12-09 14:51:32,324 INFO L124 PetriNetUnfolderBase]: 9/153 cut-off events. [2023-12-09 14:51:32,324 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-12-09 14:51:32,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 153 events. 9/153 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 351 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 130. Up to 10 conditions per place. [2023-12-09 14:51:32,325 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 103 transitions, 234 flow [2023-12-09 14:51:32,326 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 103 transitions, 234 flow [2023-12-09 14:51:32,328 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:51:32,331 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;@3b30eb95, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:51:32,331 INFO L363 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-12-09 14:51:32,335 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:51:32,335 INFO L124 PetriNetUnfolderBase]: 3/63 cut-off events. [2023-12-09 14:51:32,338 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-12-09 14:51:32,338 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:51:32,338 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:51:32,338 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-09 14:51:32,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:51:32,339 INFO L85 PathProgramCache]: Analyzing trace with hash -603259013, now seen corresponding path program 1 times [2023-12-09 14:51:32,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:51:32,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863101220] [2023-12-09 14:51:32,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:32,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:51:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:51:32,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:51:32,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:51:32,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863101220] [2023-12-09 14:51:32,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863101220] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:51:32,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:51:32,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-09 14:51:32,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103983918] [2023-12-09 14:51:32,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:51:32,468 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 14:51:32,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:51:32,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 14:51:32,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-09 14:51:32,469 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 103 [2023-12-09 14:51:32,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 103 transitions, 234 flow. Second operand has 5 states, 5 states have (on average 60.8) internal successors, (304), 5 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:32,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:51:32,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 103 [2023-12-09 14:51:32,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:51:38,117 INFO L124 PetriNetUnfolderBase]: 44135/76615 cut-off events. [2023-12-09 14:51:38,117 INFO L125 PetriNetUnfolderBase]: For 14815/14815 co-relation queries the response was YES. [2023-12-09 14:51:38,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144641 conditions, 76615 events. 44135/76615 cut-off events. For 14815/14815 co-relation queries the response was YES. Maximal size of possible extension queue 3646. Compared 788864 event pairs, 19089 based on Foata normal form. 17372/81063 useless extension candidates. Maximal degree in co-relation 93619. Up to 30317 conditions per place. [2023-12-09 14:51:38,853 INFO L140 encePairwiseOnDemand]: 89/103 looper letters, 126 selfloop transitions, 15 changer transitions 0/195 dead transitions. [2023-12-09 14:51:38,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 195 transitions, 774 flow [2023-12-09 14:51:38,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-09 14:51:38,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-09 14:51:38,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 513 transitions. [2023-12-09 14:51:38,855 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8300970873786407 [2023-12-09 14:51:38,855 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 513 transitions. [2023-12-09 14:51:38,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 513 transitions. [2023-12-09 14:51:38,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:51:38,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 513 transitions. [2023-12-09 14:51:38,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 85.5) internal successors, (513), 6 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:38,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:38,858 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:38,858 INFO L308 CegarLoopForPetriNet]: 107 programPoint places, -1 predicate places. [2023-12-09 14:51:38,859 INFO L500 AbstractCegarLoop]: Abstraction has has 106 places, 195 transitions, 774 flow [2023-12-09 14:51:38,859 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.8) internal successors, (304), 5 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:38,859 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:51:38,859 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:51:38,859 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-09 14:51:38,859 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-09 14:51:38,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:51:38,860 INFO L85 PathProgramCache]: Analyzing trace with hash 376331646, now seen corresponding path program 1 times [2023-12-09 14:51:38,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:51:38,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649299872] [2023-12-09 14:51:38,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:38,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:51:38,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:51:38,966 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-09 14:51:38,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:51:38,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649299872] [2023-12-09 14:51:38,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649299872] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:51:38,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:51:38,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-09 14:51:38,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879397822] [2023-12-09 14:51:38,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:51:38,967 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 14:51:38,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:51:38,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 14:51:38,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-09 14:51:38,969 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 103 [2023-12-09 14:51:38,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 195 transitions, 774 flow. Second operand has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:38,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:51:38,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 103 [2023-12-09 14:51:38,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:51:48,762 INFO L124 PetriNetUnfolderBase]: 70522/124273 cut-off events. [2023-12-09 14:51:48,763 INFO L125 PetriNetUnfolderBase]: For 29694/30067 co-relation queries the response was YES. [2023-12-09 14:51:49,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330231 conditions, 124273 events. 70522/124273 cut-off events. For 29694/30067 co-relation queries the response was YES. Maximal size of possible extension queue 5830. Compared 1373840 event pairs, 18640 based on Foata normal form. 6/103722 useless extension candidates. Maximal degree in co-relation 279137. Up to 51002 conditions per place. [2023-12-09 14:51:50,248 INFO L140 encePairwiseOnDemand]: 95/103 looper letters, 280 selfloop transitions, 27 changer transitions 0/362 dead transitions. [2023-12-09 14:51:50,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 362 transitions, 2152 flow [2023-12-09 14:51:50,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-09 14:51:50,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-09 14:51:50,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 495 transitions. [2023-12-09 14:51:50,250 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8009708737864077 [2023-12-09 14:51:50,250 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 495 transitions. [2023-12-09 14:51:50,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 495 transitions. [2023-12-09 14:51:50,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:51:50,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 495 transitions. [2023-12-09 14:51:50,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 82.5) internal successors, (495), 6 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:50,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:50,253 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:50,253 INFO L308 CegarLoopForPetriNet]: 107 programPoint places, 4 predicate places. [2023-12-09 14:51:50,254 INFO L500 AbstractCegarLoop]: Abstraction has has 111 places, 362 transitions, 2152 flow [2023-12-09 14:51:50,254 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:50,254 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:51:50,254 INFO L233 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:51:50,254 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-09 14:51:50,254 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-09 14:51:50,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:51:50,255 INFO L85 PathProgramCache]: Analyzing trace with hash 644822940, now seen corresponding path program 1 times [2023-12-09 14:51:50,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:51:50,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757791701] [2023-12-09 14:51:50,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:50,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:51:50,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:51:50,348 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-09 14:51:50,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:51:50,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757791701] [2023-12-09 14:51:50,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757791701] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:51:50,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:51:50,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-09 14:51:50,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099920461] [2023-12-09 14:51:50,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:51:50,349 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 14:51:50,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:51:50,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 14:51:50,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-09 14:51:50,350 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 103 [2023-12-09 14:51:50,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 362 transitions, 2152 flow. Second operand has 5 states, 5 states have (on average 61.2) internal successors, (306), 5 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:50,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:51:50,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 103 [2023-12-09 14:51:50,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:52:08,649 INFO L124 PetriNetUnfolderBase]: 107477/192771 cut-off events. [2023-12-09 14:52:08,650 INFO L125 PetriNetUnfolderBase]: For 66023/69439 co-relation queries the response was YES. [2023-12-09 14:52:09,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 653175 conditions, 192771 events. 107477/192771 cut-off events. For 66023/69439 co-relation queries the response was YES. Maximal size of possible extension queue 9000. Compared 2260065 event pairs, 23594 based on Foata normal form. 43/161291 useless extension candidates. Maximal degree in co-relation 99130. Up to 80561 conditions per place. [2023-12-09 14:52:11,189 INFO L140 encePairwiseOnDemand]: 95/103 looper letters, 576 selfloop transitions, 51 changer transitions 0/683 dead transitions. [2023-12-09 14:52:11,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 683 transitions, 5454 flow [2023-12-09 14:52:11,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-09 14:52:11,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-09 14:52:11,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 492 transitions. [2023-12-09 14:52:11,195 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7961165048543689 [2023-12-09 14:52:11,195 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 492 transitions. [2023-12-09 14:52:11,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 492 transitions. [2023-12-09 14:52:11,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:52:11,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 492 transitions. [2023-12-09 14:52:11,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:52:11,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:52:11,197 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:52:11,197 INFO L308 CegarLoopForPetriNet]: 107 programPoint places, 9 predicate places. [2023-12-09 14:52:11,197 INFO L500 AbstractCegarLoop]: Abstraction has has 116 places, 683 transitions, 5454 flow [2023-12-09 14:52:11,198 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 61.2) internal successors, (306), 5 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:52:11,198 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:52:11,198 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:52:11,198 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-09 14:52:11,198 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-09 14:52:11,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:52:11,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1609608043, now seen corresponding path program 1 times [2023-12-09 14:52:11,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:52:11,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786312645] [2023-12-09 14:52:11,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:52:11,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:52:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:52:11,407 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-09 14:52:11,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:52:11,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786312645] [2023-12-09 14:52:11,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786312645] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:52:11,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:52:11,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 14:52:11,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258253690] [2023-12-09 14:52:11,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:52:11,408 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 14:52:11,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:52:11,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 14:52:11,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-09 14:52:11,410 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 103 [2023-12-09 14:52:11,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 683 transitions, 5454 flow. Second operand has 7 states, 7 states have (on average 60.142857142857146) internal successors, (421), 7 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:52:11,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:52:11,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 103 [2023-12-09 14:52:11,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:52:38,404 INFO L124 PetriNetUnfolderBase]: 111633/199197 cut-off events. [2023-12-09 14:52:38,404 INFO L125 PetriNetUnfolderBase]: For 104453/106463 co-relation queries the response was YES. [2023-12-09 14:52:39,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 837391 conditions, 199197 events. 111633/199197 cut-off events. For 104453/106463 co-relation queries the response was YES. Maximal size of possible extension queue 9557. Compared 2340524 event pairs, 24145 based on Foata normal form. 79/167465 useless extension candidates. Maximal degree in co-relation 696341. Up to 89867 conditions per place. [2023-12-09 14:52:41,278 INFO L140 encePairwiseOnDemand]: 90/103 looper letters, 693 selfloop transitions, 66 changer transitions 0/813 dead transitions. [2023-12-09 14:52:41,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 813 transitions, 8061 flow [2023-12-09 14:52:41,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-09 14:52:41,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-09 14:52:41,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 743 transitions. [2023-12-09 14:52:41,281 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8015102481121898 [2023-12-09 14:52:41,281 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 743 transitions. [2023-12-09 14:52:41,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 743 transitions. [2023-12-09 14:52:41,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:52:41,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 743 transitions. [2023-12-09 14:52:41,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 82.55555555555556) internal successors, (743), 9 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:52:41,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 103.0) internal successors, (1030), 10 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:52:41,284 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 103.0) internal successors, (1030), 10 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:52:41,285 INFO L308 CegarLoopForPetriNet]: 107 programPoint places, 17 predicate places. [2023-12-09 14:52:41,285 INFO L500 AbstractCegarLoop]: Abstraction has has 124 places, 813 transitions, 8061 flow [2023-12-09 14:52:41,285 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 60.142857142857146) internal successors, (421), 7 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:52:41,285 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:52:41,285 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:52:41,285 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-09 14:52:41,286 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-09 14:52:41,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:52:41,286 INFO L85 PathProgramCache]: Analyzing trace with hash 191925349, now seen corresponding path program 2 times [2023-12-09 14:52:41,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:52:41,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682935010] [2023-12-09 14:52:41,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:52:41,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:52:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:52:41,325 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-09 14:52:41,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:52:41,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682935010] [2023-12-09 14:52:41,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682935010] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:52:41,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:52:41,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-09 14:52:41,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223621048] [2023-12-09 14:52:41,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:52:41,326 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 14:52:41,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:52:41,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 14:52:41,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 14:52:41,327 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 103 [2023-12-09 14:52:41,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 813 transitions, 8061 flow. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:52:41,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:52:41,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 103 [2023-12-09 14:52:41,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:52:44,563 INFO L124 PetriNetUnfolderBase]: 16336/30280 cut-off events. [2023-12-09 14:52:44,564 INFO L125 PetriNetUnfolderBase]: For 34559/35731 co-relation queries the response was YES. [2023-12-09 14:52:44,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147925 conditions, 30280 events. 16336/30280 cut-off events. For 34559/35731 co-relation queries the response was YES. Maximal size of possible extension queue 1344. Compared 296396 event pairs, 2983 based on Foata normal form. 2048/24725 useless extension candidates. Maximal degree in co-relation 53049. Up to 12577 conditions per place. [2023-12-09 14:52:44,982 INFO L140 encePairwiseOnDemand]: 91/103 looper letters, 281 selfloop transitions, 143 changer transitions 0/720 dead transitions. [2023-12-09 14:52:44,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 720 transitions, 8295 flow [2023-12-09 14:52:44,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 14:52:44,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 14:52:44,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 258 transitions. [2023-12-09 14:52:44,984 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8349514563106796 [2023-12-09 14:52:44,984 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 258 transitions. [2023-12-09 14:52:44,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 258 transitions. [2023-12-09 14:52:44,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:52:44,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 258 transitions. [2023-12-09 14:52:44,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:52:44,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:52:44,986 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:52:44,986 INFO L308 CegarLoopForPetriNet]: 107 programPoint places, 19 predicate places. [2023-12-09 14:52:44,986 INFO L500 AbstractCegarLoop]: Abstraction has has 126 places, 720 transitions, 8295 flow [2023-12-09 14:52:44,986 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:52:44,987 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:52:44,987 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:52:44,987 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-09 14:52:44,987 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-09 14:52:44,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:52:44,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1871874092, now seen corresponding path program 1 times [2023-12-09 14:52:44,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:52:44,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338309426] [2023-12-09 14:52:44,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:52:44,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:52:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:52:45,089 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-09 14:52:45,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:52:45,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338309426] [2023-12-09 14:52:45,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338309426] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:52:45,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:52:45,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 14:52:45,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435440641] [2023-12-09 14:52:45,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:52:45,090 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 14:52:45,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:52:45,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 14:52:45,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-09 14:52:45,092 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 103 [2023-12-09 14:52:45,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 720 transitions, 8295 flow. Second operand has 7 states, 7 states have (on average 60.142857142857146) internal successors, (421), 7 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:52:45,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:52:45,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 103 [2023-12-09 14:52:45,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:52:49,398 INFO L124 PetriNetUnfolderBase]: 16747/31090 cut-off events. [2023-12-09 14:52:49,398 INFO L125 PetriNetUnfolderBase]: For 40980/42949 co-relation queries the response was YES. [2023-12-09 14:52:49,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176012 conditions, 31090 events. 16747/31090 cut-off events. For 40980/42949 co-relation queries the response was YES. Maximal size of possible extension queue 1457. Compared 306248 event pairs, 3220 based on Foata normal form. 107/23295 useless extension candidates. Maximal degree in co-relation 46211. Up to 12371 conditions per place. [2023-12-09 14:52:49,775 INFO L140 encePairwiseOnDemand]: 90/103 looper letters, 688 selfloop transitions, 47 changer transitions 0/789 dead transitions. [2023-12-09 14:52:49,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 789 transitions, 10630 flow [2023-12-09 14:52:49,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-09 14:52:49,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-09 14:52:49,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 698 transitions. [2023-12-09 14:52:49,777 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7529665587918015 [2023-12-09 14:52:49,777 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 698 transitions. [2023-12-09 14:52:49,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 698 transitions. [2023-12-09 14:52:49,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:52:49,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 698 transitions. [2023-12-09 14:52:49,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.55555555555556) internal successors, (698), 9 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:52:49,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 103.0) internal successors, (1030), 10 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:52:49,781 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 103.0) internal successors, (1030), 10 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:52:49,782 INFO L308 CegarLoopForPetriNet]: 107 programPoint places, 27 predicate places. [2023-12-09 14:52:49,782 INFO L500 AbstractCegarLoop]: Abstraction has has 134 places, 789 transitions, 10630 flow [2023-12-09 14:52:49,782 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 60.142857142857146) internal successors, (421), 7 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:52:49,782 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:52:49,782 INFO L233 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:52:49,782 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-09 14:52:49,782 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)] === [2023-12-09 14:52:49,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:52:49,783 INFO L85 PathProgramCache]: Analyzing trace with hash 735767153, now seen corresponding path program 1 times [2023-12-09 14:52:49,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:52:49,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99398620] [2023-12-09 14:52:49,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:52:49,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:52:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:52:49,802 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 14:52:49,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:52:49,811 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 14:52:49,811 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 14:52:49,811 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-12-09 14:52:49,811 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-12-09 14:52:49,811 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-12-09 14:52:49,811 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-12-09 14:52:49,811 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-12-09 14:52:49,811 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-12-09 14:52:49,812 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-09 14:52:49,812 INFO L457 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-12-09 14:52:49,812 WARN L227 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 14:52:49,812 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-12-09 14:52:49,835 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:52:49,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 121 transitions, 282 flow [2023-12-09 14:52:49,851 INFO L124 PetriNetUnfolderBase]: 11/184 cut-off events. [2023-12-09 14:52:49,851 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-12-09 14:52:49,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 184 events. 11/184 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 444 event pairs, 0 based on Foata normal form. 0/162 useless extension candidates. Maximal degree in co-relation 166. Up to 12 conditions per place. [2023-12-09 14:52:49,852 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 121 transitions, 282 flow [2023-12-09 14:52:49,854 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 121 transitions, 282 flow [2023-12-09 14:52:49,855 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:52:49,856 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;@3b30eb95, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:52:49,856 INFO L363 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-12-09 14:52:49,858 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:52:49,858 INFO L124 PetriNetUnfolderBase]: 3/62 cut-off events. [2023-12-09 14:52:49,858 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-12-09 14:52:49,858 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:52:49,859 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:52:49,859 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-09 14:52:49,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:52:49,859 INFO L85 PathProgramCache]: Analyzing trace with hash 143545772, now seen corresponding path program 1 times [2023-12-09 14:52:49,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:52:49,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628697931] [2023-12-09 14:52:49,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:52:49,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:52:49,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:52:49,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:52:49,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:52:49,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628697931] [2023-12-09 14:52:49,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628697931] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:52:49,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:52:49,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-09 14:52:49,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680141082] [2023-12-09 14:52:49,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:52:49,920 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 14:52:49,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:52:49,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 14:52:49,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-09 14:52:49,921 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 121 [2023-12-09 14:52:49,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 121 transitions, 282 flow. Second operand has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:52:49,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:52:49,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 121 [2023-12-09 14:52:49,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand