/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/pthread-ext/01b_inc-pthread.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-29 19:08:53,237 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 19:08:53,301 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-29 19:08:53,324 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 19:08:53,325 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 19:08:53,325 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 19:08:53,325 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 19:08:53,326 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 19:08:53,326 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 19:08:53,329 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 19:08:53,329 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 19:08:53,329 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 19:08:53,329 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 19:08:53,330 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 19:08:53,330 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 19:08:53,330 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 19:08:53,330 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 19:08:53,330 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 19:08:53,331 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 19:08:53,331 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 19:08:53,331 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 19:08:53,331 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 19:08:53,332 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 19:08:53,332 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-29 19:08:53,332 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 19:08:53,332 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 19:08:53,332 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 19:08:53,332 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 19:08:53,332 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 19:08:53,332 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 19:08:53,333 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 19:08:53,333 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 19:08:53,333 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 19:08:53,333 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-11-29 19:08:53,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 19:08:53,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 19:08:53,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 19:08:53,530 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 19:08:53,531 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 19:08:53,531 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/01b_inc-pthread.i [2023-11-29 19:08:54,388 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 19:08:54,561 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 19:08:54,561 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/01b_inc-pthread.i [2023-11-29 19:08:54,570 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2b7fa91c/13823858856041bc9328440f0225fe41/FLAGdd4aeb07a [2023-11-29 19:08:54,580 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2b7fa91c/13823858856041bc9328440f0225fe41 [2023-11-29 19:08:54,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 19:08:54,582 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-29 19:08:54,584 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 19:08:54,584 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 19:08:54,587 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 19:08:54,587 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:08:54" (1/1) ... [2023-11-29 19:08:54,588 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@463abe01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:54, skipping insertion in model container [2023-11-29 19:08:54,589 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:08:54" (1/1) ... [2023-11-29 19:08:54,620 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 19:08:54,781 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] [2023-11-29 19:08:54,787 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 19:08:54,794 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 19:08:54,816 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] [2023-11-29 19:08:54,818 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 19:08:54,836 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 19:08:54,836 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 19:08:54,841 INFO L206 MainTranslator]: Completed translation [2023-11-29 19:08:54,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:54 WrapperNode [2023-11-29 19:08:54,841 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 19:08:54,842 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 19:08:54,842 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 19:08:54,842 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 19:08:54,846 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:54" (1/1) ... [2023-11-29 19:08:54,854 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:54" (1/1) ... [2023-11-29 19:08:54,865 INFO L138 Inliner]: procedures = 164, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2023-11-29 19:08:54,865 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 19:08:54,866 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 19:08:54,866 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 19:08:54,866 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 19:08:54,871 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:54" (1/1) ... [2023-11-29 19:08:54,871 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:54" (1/1) ... [2023-11-29 19:08:54,873 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:54" (1/1) ... [2023-11-29 19:08:54,873 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:54" (1/1) ... [2023-11-29 19:08:54,875 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:54" (1/1) ... [2023-11-29 19:08:54,877 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:54" (1/1) ... [2023-11-29 19:08:54,878 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:54" (1/1) ... [2023-11-29 19:08:54,879 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:54" (1/1) ... [2023-11-29 19:08:54,880 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 19:08:54,880 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 19:08:54,881 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 19:08:54,881 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 19:08:54,881 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:54" (1/1) ... [2023-11-29 19:08:54,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 19:08:54,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 19:08:54,905 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-29 19:08:54,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-29 19:08:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-29 19:08:54,928 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-29 19:08:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 19:08:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 19:08:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 19:08:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 19:08:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 19:08:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 19:08:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 19:08:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 19:08:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 19:08:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 19:08:54,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 19:08:54,930 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 19:08:55,014 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 19:08:55,015 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 19:08:55,096 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 19:08:55,127 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 19:08:55,127 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 19:08:55,128 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:08:55 BoogieIcfgContainer [2023-11-29 19:08:55,128 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 19:08:55,130 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 19:08:55,130 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 19:08:55,132 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 19:08:55,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:08:54" (1/3) ... [2023-11-29 19:08:55,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45419d12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:08:55, skipping insertion in model container [2023-11-29 19:08:55,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:54" (2/3) ... [2023-11-29 19:08:55,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45419d12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:08:55, skipping insertion in model container [2023-11-29 19:08:55,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:08:55" (3/3) ... [2023-11-29 19:08:55,133 INFO L112 eAbstractionObserver]: Analyzing ICFG 01b_inc-pthread.i [2023-11-29 19:08:55,146 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 19:08:55,146 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 19:08:55,146 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 19:08:55,210 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 19:08:55,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 49 transitions, 102 flow [2023-11-29 19:08:55,251 INFO L124 PetriNetUnfolderBase]: 3/60 cut-off events. [2023-11-29 19:08:55,252 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 19:08:55,255 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. [2023-11-29 19:08:55,255 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 49 transitions, 102 flow [2023-11-29 19:08:55,257 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 49 transitions, 102 flow [2023-11-29 19:08:55,263 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 19:08:55,267 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;@2f79c71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 19:08:55,267 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-29 19:08:55,275 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 19:08:55,275 INFO L124 PetriNetUnfolderBase]: 2/48 cut-off events. [2023-11-29 19:08:55,275 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 19:08:55,276 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:08:55,276 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:08:55,276 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 19:08:55,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:08:55,280 INFO L85 PathProgramCache]: Analyzing trace with hash -943060746, now seen corresponding path program 1 times [2023-11-29 19:08:55,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:08:55,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985471088] [2023-11-29 19:08:55,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:08:55,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:08:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:08:55,362 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 19:08:55,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:08:55,389 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 19:08:55,390 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-29 19:08:55,390 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-11-29 19:08:55,392 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-11-29 19:08:55,392 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-11-29 19:08:55,392 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 19:08:55,392 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-11-29 19:08:55,394 WARN L227 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 19:08:55,395 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-29 19:08:55,419 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 19:08:55,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 67 transitions, 144 flow [2023-11-29 19:08:55,435 INFO L124 PetriNetUnfolderBase]: 5/91 cut-off events. [2023-11-29 19:08:55,435 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 19:08:55,437 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. [2023-11-29 19:08:55,437 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 67 transitions, 144 flow [2023-11-29 19:08:55,438 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 67 transitions, 144 flow [2023-11-29 19:08:55,439 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 19:08:55,440 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;@2f79c71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 19:08:55,440 INFO L363 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-29 19:08:55,449 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 19:08:55,449 INFO L124 PetriNetUnfolderBase]: 3/65 cut-off events. [2023-11-29 19:08:55,449 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 19:08:55,449 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:08:55,449 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:08:55,449 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-29 19:08:55,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:08:55,450 INFO L85 PathProgramCache]: Analyzing trace with hash 892800825, now seen corresponding path program 1 times [2023-11-29 19:08:55,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:08:55,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564796915] [2023-11-29 19:08:55,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:08:55,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:08:55,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:08:55,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:08:55,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:08:55,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564796915] [2023-11-29 19:08:55,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564796915] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:08:55,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:08:55,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 19:08:55,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298365195] [2023-11-29 19:08:55,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:08:55,713 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 19:08:55,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:08:55,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 19:08:55,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 19:08:55,733 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 67 [2023-11-29 19:08:55,735 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) [2023-11-29 19:08:55,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:08:55,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 67 [2023-11-29 19:08:55,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:08:55,852 INFO L124 PetriNetUnfolderBase]: 85/337 cut-off events. [2023-11-29 19:08:55,852 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-11-29 19:08:55,853 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. [2023-11-29 19:08:55,855 INFO L140 encePairwiseOnDemand]: 57/67 looper letters, 40 selfloop transitions, 9 changer transitions 0/87 dead transitions. [2023-11-29 19:08:55,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 87 transitions, 292 flow [2023-11-29 19:08:55,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 19:08:55,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 19:08:55,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 321 transitions. [2023-11-29 19:08:55,865 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7985074626865671 [2023-11-29 19:08:55,865 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 321 transitions. [2023-11-29 19:08:55,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 321 transitions. [2023-11-29 19:08:55,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:08:55,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 321 transitions. [2023-11-29 19:08:55,870 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) [2023-11-29 19:08:55,873 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) [2023-11-29 19:08:55,873 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) [2023-11-29 19:08:55,875 INFO L307 CegarLoopForPetriNet]: 69 programPoint places, -1 predicate places. [2023-11-29 19:08:55,875 INFO L500 AbstractCegarLoop]: Abstraction has has 68 places, 87 transitions, 292 flow [2023-11-29 19:08:55,876 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) [2023-11-29 19:08:55,876 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:08:55,876 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:08:55,876 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 19:08:55,878 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-29 19:08:55,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:08:55,880 INFO L85 PathProgramCache]: Analyzing trace with hash -327441808, now seen corresponding path program 1 times [2023-11-29 19:08:55,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:08:55,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275529654] [2023-11-29 19:08:55,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:08:55,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:08:55,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:08:55,903 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 19:08:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:08:55,926 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 19:08:55,926 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-29 19:08:55,926 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-11-29 19:08:55,927 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-11-29 19:08:55,927 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-11-29 19:08:55,927 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-11-29 19:08:55,927 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 19:08:55,927 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-29 19:08:55,929 WARN L227 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 19:08:55,929 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-29 19:08:55,962 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 19:08:55,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 85 transitions, 188 flow [2023-11-29 19:08:55,978 INFO L124 PetriNetUnfolderBase]: 7/122 cut-off events. [2023-11-29 19:08:55,978 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-29 19:08:55,980 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. [2023-11-29 19:08:55,981 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 85 transitions, 188 flow [2023-11-29 19:08:55,982 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 85 transitions, 188 flow [2023-11-29 19:08:55,983 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 19:08:55,985 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;@2f79c71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 19:08:55,985 INFO L363 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-29 19:08:55,990 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 19:08:55,990 INFO L124 PetriNetUnfolderBase]: 3/65 cut-off events. [2023-11-29 19:08:55,990 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 19:08:55,991 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:08:55,991 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:08:55,993 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-29 19:08:55,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:08:55,997 INFO L85 PathProgramCache]: Analyzing trace with hash -51062774, now seen corresponding path program 1 times [2023-11-29 19:08:55,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:08:55,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891208071] [2023-11-29 19:08:55,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:08:55,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:08:56,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:08:56,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:08:56,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:08:56,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891208071] [2023-11-29 19:08:56,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891208071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:08:56,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:08:56,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 19:08:56,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622492748] [2023-11-29 19:08:56,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:08:56,172 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 19:08:56,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:08:56,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 19:08:56,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 19:08:56,174 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 85 [2023-11-29 19:08:56,175 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) [2023-11-29 19:08:56,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:08:56,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 85 [2023-11-29 19:08:56,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:08:56,727 INFO L124 PetriNetUnfolderBase]: 2447/5331 cut-off events. [2023-11-29 19:08:56,727 INFO L125 PetriNetUnfolderBase]: For 712/712 co-relation queries the response was YES. [2023-11-29 19:08:56,737 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. [2023-11-29 19:08:56,766 INFO L140 encePairwiseOnDemand]: 73/85 looper letters, 89 selfloop transitions, 12 changer transitions 0/147 dead transitions. [2023-11-29 19:08:56,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 147 transitions, 552 flow [2023-11-29 19:08:56,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 19:08:56,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 19:08:56,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 423 transitions. [2023-11-29 19:08:56,770 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8294117647058824 [2023-11-29 19:08:56,770 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 423 transitions. [2023-11-29 19:08:56,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 423 transitions. [2023-11-29 19:08:56,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:08:56,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 423 transitions. [2023-11-29 19:08:56,772 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) [2023-11-29 19:08:56,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:08:56,775 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:08:56,776 INFO L307 CegarLoopForPetriNet]: 88 programPoint places, -1 predicate places. [2023-11-29 19:08:56,776 INFO L500 AbstractCegarLoop]: Abstraction has has 87 places, 147 transitions, 552 flow [2023-11-29 19:08:56,776 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) [2023-11-29 19:08:56,777 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:08:56,777 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:08:56,777 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 19:08:56,777 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-29 19:08:56,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:08:56,778 INFO L85 PathProgramCache]: Analyzing trace with hash -649578441, now seen corresponding path program 1 times [2023-11-29 19:08:56,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:08:56,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982142729] [2023-11-29 19:08:56,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:08:56,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:08:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:08:56,905 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 19:08:56,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:08:56,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982142729] [2023-11-29 19:08:56,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982142729] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:08:56,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:08:56,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 19:08:56,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928705019] [2023-11-29 19:08:56,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:08:56,906 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 19:08:56,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:08:56,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 19:08:56,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 19:08:56,909 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 85 [2023-11-29 19:08:56,909 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) [2023-11-29 19:08:56,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:08:56,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 85 [2023-11-29 19:08:56,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:08:57,675 INFO L124 PetriNetUnfolderBase]: 3419/7566 cut-off events. [2023-11-29 19:08:57,675 INFO L125 PetriNetUnfolderBase]: For 1483/1594 co-relation queries the response was YES. [2023-11-29 19:08:57,688 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. [2023-11-29 19:08:57,736 INFO L140 encePairwiseOnDemand]: 78/85 looper letters, 174 selfloop transitions, 21 changer transitions 0/242 dead transitions. [2023-11-29 19:08:57,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 242 transitions, 1355 flow [2023-11-29 19:08:57,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 19:08:57,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 19:08:57,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 407 transitions. [2023-11-29 19:08:57,737 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7980392156862746 [2023-11-29 19:08:57,738 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 407 transitions. [2023-11-29 19:08:57,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 407 transitions. [2023-11-29 19:08:57,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:08:57,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 407 transitions. [2023-11-29 19:08:57,739 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) [2023-11-29 19:08:57,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:08:57,740 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:08:57,741 INFO L307 CegarLoopForPetriNet]: 88 programPoint places, 4 predicate places. [2023-11-29 19:08:57,741 INFO L500 AbstractCegarLoop]: Abstraction has has 92 places, 242 transitions, 1355 flow [2023-11-29 19:08:57,741 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) [2023-11-29 19:08:57,741 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:08:57,741 INFO L232 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:08:57,741 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 19:08:57,741 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-29 19:08:57,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:08:57,742 INFO L85 PathProgramCache]: Analyzing trace with hash -626276659, now seen corresponding path program 1 times [2023-11-29 19:08:57,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:08:57,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447936320] [2023-11-29 19:08:57,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:08:57,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:08:57,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:08:57,758 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 19:08:57,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:08:57,770 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 19:08:57,770 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-29 19:08:57,770 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-29 19:08:57,770 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-29 19:08:57,771 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-11-29 19:08:57,771 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-11-29 19:08:57,771 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-11-29 19:08:57,771 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 19:08:57,771 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-29 19:08:57,771 WARN L227 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 19:08:57,771 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-29 19:08:57,863 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 19:08:57,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 103 transitions, 234 flow [2023-11-29 19:08:57,872 INFO L124 PetriNetUnfolderBase]: 9/153 cut-off events. [2023-11-29 19:08:57,872 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-29 19:08:57,873 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. [2023-11-29 19:08:57,873 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 103 transitions, 234 flow [2023-11-29 19:08:57,874 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 103 transitions, 234 flow [2023-11-29 19:08:57,874 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 19:08:57,875 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;@2f79c71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 19:08:57,875 INFO L363 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-29 19:08:57,877 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 19:08:57,877 INFO L124 PetriNetUnfolderBase]: 3/63 cut-off events. [2023-11-29 19:08:57,877 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 19:08:57,877 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:08:57,877 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:08:57,878 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-29 19:08:57,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:08:57,878 INFO L85 PathProgramCache]: Analyzing trace with hash -603259013, now seen corresponding path program 1 times [2023-11-29 19:08:57,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:08:57,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886626805] [2023-11-29 19:08:57,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:08:57,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:08:57,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:08:58,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:08:58,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:08:58,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886626805] [2023-11-29 19:08:58,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886626805] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:08:58,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:08:58,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 19:08:58,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541181351] [2023-11-29 19:08:58,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:08:58,009 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 19:08:58,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:08:58,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 19:08:58,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 19:08:58,010 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 103 [2023-11-29 19:08:58,010 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) [2023-11-29 19:08:58,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:08:58,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 103 [2023-11-29 19:08:58,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:09:03,081 INFO L124 PetriNetUnfolderBase]: 44135/76615 cut-off events. [2023-11-29 19:09:03,081 INFO L125 PetriNetUnfolderBase]: For 14815/14815 co-relation queries the response was YES. [2023-11-29 19:09:03,307 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. [2023-11-29 19:09:03,861 INFO L140 encePairwiseOnDemand]: 89/103 looper letters, 126 selfloop transitions, 15 changer transitions 0/195 dead transitions. [2023-11-29 19:09:03,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 195 transitions, 774 flow [2023-11-29 19:09:03,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 19:09:03,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 19:09:03,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 513 transitions. [2023-11-29 19:09:03,862 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8300970873786407 [2023-11-29 19:09:03,862 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 513 transitions. [2023-11-29 19:09:03,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 513 transitions. [2023-11-29 19:09:03,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:09:03,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 513 transitions. [2023-11-29 19:09:03,864 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) [2023-11-29 19:09:03,865 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) [2023-11-29 19:09:03,865 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) [2023-11-29 19:09:03,866 INFO L307 CegarLoopForPetriNet]: 107 programPoint places, -1 predicate places. [2023-11-29 19:09:03,867 INFO L500 AbstractCegarLoop]: Abstraction has has 106 places, 195 transitions, 774 flow [2023-11-29 19:09:03,867 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) [2023-11-29 19:09:03,867 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:09:03,867 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:09:03,867 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 19:09:03,867 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-29 19:09:03,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:09:03,868 INFO L85 PathProgramCache]: Analyzing trace with hash 376331646, now seen corresponding path program 1 times [2023-11-29 19:09:03,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:09:03,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727670961] [2023-11-29 19:09:03,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:09:03,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:09:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:09:03,973 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 19:09:03,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:09:03,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727670961] [2023-11-29 19:09:03,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727670961] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:09:03,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:09:03,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 19:09:03,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683412175] [2023-11-29 19:09:03,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:09:03,974 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 19:09:03,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:09:03,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 19:09:03,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 19:09:03,975 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 103 [2023-11-29 19:09:03,976 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) [2023-11-29 19:09:03,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:09:03,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 103 [2023-11-29 19:09:03,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:09:12,643 INFO L124 PetriNetUnfolderBase]: 70522/124273 cut-off events. [2023-11-29 19:09:12,644 INFO L125 PetriNetUnfolderBase]: For 29694/30067 co-relation queries the response was YES. [2023-11-29 19:09:13,010 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. [2023-11-29 19:09:13,731 INFO L140 encePairwiseOnDemand]: 95/103 looper letters, 280 selfloop transitions, 27 changer transitions 0/362 dead transitions. [2023-11-29 19:09:13,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 362 transitions, 2152 flow [2023-11-29 19:09:13,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 19:09:13,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 19:09:13,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 495 transitions. [2023-11-29 19:09:13,732 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8009708737864077 [2023-11-29 19:09:13,732 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 495 transitions. [2023-11-29 19:09:13,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 495 transitions. [2023-11-29 19:09:13,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:09:13,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 495 transitions. [2023-11-29 19:09:13,733 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) [2023-11-29 19:09:13,734 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) [2023-11-29 19:09:13,734 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) [2023-11-29 19:09:13,735 INFO L307 CegarLoopForPetriNet]: 107 programPoint places, 4 predicate places. [2023-11-29 19:09:13,735 INFO L500 AbstractCegarLoop]: Abstraction has has 111 places, 362 transitions, 2152 flow [2023-11-29 19:09:13,735 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) [2023-11-29 19:09:13,735 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:09:13,735 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:09:13,735 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 19:09:13,735 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-29 19:09:13,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:09:13,736 INFO L85 PathProgramCache]: Analyzing trace with hash 644822940, now seen corresponding path program 1 times [2023-11-29 19:09:13,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:09:13,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286495047] [2023-11-29 19:09:13,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:09:13,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:09:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:09:13,809 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 19:09:13,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:09:13,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286495047] [2023-11-29 19:09:13,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286495047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:09:13,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:09:13,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 19:09:13,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468804683] [2023-11-29 19:09:13,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:09:13,810 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 19:09:13,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:09:13,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 19:09:13,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 19:09:13,811 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 103 [2023-11-29 19:09:13,811 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) [2023-11-29 19:09:13,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:09:13,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 103 [2023-11-29 19:09:13,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:09:29,563 INFO L124 PetriNetUnfolderBase]: 107477/192771 cut-off events. [2023-11-29 19:09:29,563 INFO L125 PetriNetUnfolderBase]: For 66023/69439 co-relation queries the response was YES. [2023-11-29 19:09:30,174 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. [2023-11-29 19:09:31,710 INFO L140 encePairwiseOnDemand]: 95/103 looper letters, 576 selfloop transitions, 51 changer transitions 0/683 dead transitions. [2023-11-29 19:09:31,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 683 transitions, 5454 flow [2023-11-29 19:09:31,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 19:09:31,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 19:09:31,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 492 transitions. [2023-11-29 19:09:31,713 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7961165048543689 [2023-11-29 19:09:31,713 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 492 transitions. [2023-11-29 19:09:31,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 492 transitions. [2023-11-29 19:09:31,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:09:31,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 492 transitions. [2023-11-29 19:09:31,714 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) [2023-11-29 19:09:31,715 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) [2023-11-29 19:09:31,715 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) [2023-11-29 19:09:31,716 INFO L307 CegarLoopForPetriNet]: 107 programPoint places, 9 predicate places. [2023-11-29 19:09:31,716 INFO L500 AbstractCegarLoop]: Abstraction has has 116 places, 683 transitions, 5454 flow [2023-11-29 19:09:31,716 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) [2023-11-29 19:09:31,716 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:09:31,716 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:09:31,716 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 19:09:31,716 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-29 19:09:31,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:09:31,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1609608043, now seen corresponding path program 1 times [2023-11-29 19:09:31,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:09:31,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227291757] [2023-11-29 19:09:31,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:09:31,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:09:31,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:09:31,820 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 19:09:31,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:09:31,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227291757] [2023-11-29 19:09:31,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227291757] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:09:31,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:09:31,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 19:09:31,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147905508] [2023-11-29 19:09:31,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:09:31,821 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 19:09:31,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:09:31,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 19:09:31,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 19:09:31,822 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 103 [2023-11-29 19:09:31,822 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) [2023-11-29 19:09:31,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:09:31,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 103 [2023-11-29 19:09:31,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:09:51,135 INFO L124 PetriNetUnfolderBase]: 111633/199197 cut-off events. [2023-11-29 19:09:51,135 INFO L125 PetriNetUnfolderBase]: For 104453/106463 co-relation queries the response was YES. [2023-11-29 19:09:51,761 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. [2023-11-29 19:09:53,427 INFO L140 encePairwiseOnDemand]: 90/103 looper letters, 693 selfloop transitions, 66 changer transitions 0/813 dead transitions. [2023-11-29 19:09:53,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 813 transitions, 8061 flow [2023-11-29 19:09:53,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 19:09:53,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 19:09:53,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 743 transitions. [2023-11-29 19:09:53,429 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8015102481121898 [2023-11-29 19:09:53,429 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 743 transitions. [2023-11-29 19:09:53,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 743 transitions. [2023-11-29 19:09:53,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:09:53,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 743 transitions. [2023-11-29 19:09:53,431 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) [2023-11-29 19:09:53,432 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) [2023-11-29 19:09:53,432 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) [2023-11-29 19:09:53,432 INFO L307 CegarLoopForPetriNet]: 107 programPoint places, 17 predicate places. [2023-11-29 19:09:53,433 INFO L500 AbstractCegarLoop]: Abstraction has has 124 places, 813 transitions, 8061 flow [2023-11-29 19:09:53,433 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) [2023-11-29 19:09:53,433 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:09:53,433 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:09:53,433 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 19:09:53,433 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-29 19:09:53,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:09:53,433 INFO L85 PathProgramCache]: Analyzing trace with hash 191925349, now seen corresponding path program 2 times [2023-11-29 19:09:53,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:09:53,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586721106] [2023-11-29 19:09:53,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:09:53,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:09:53,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:09:53,472 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 19:09:53,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:09:53,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586721106] [2023-11-29 19:09:53,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586721106] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:09:53,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:09:53,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 19:09:53,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178309542] [2023-11-29 19:09:53,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:09:53,473 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 19:09:53,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:09:53,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 19:09:53,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 19:09:53,474 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 103 [2023-11-29 19:09:53,474 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) [2023-11-29 19:09:53,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:09:53,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 103 [2023-11-29 19:09:53,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:09:56,324 INFO L124 PetriNetUnfolderBase]: 16336/30280 cut-off events. [2023-11-29 19:09:56,325 INFO L125 PetriNetUnfolderBase]: For 34559/35731 co-relation queries the response was YES. [2023-11-29 19:09:56,398 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. [2023-11-29 19:09:56,777 INFO L140 encePairwiseOnDemand]: 91/103 looper letters, 281 selfloop transitions, 143 changer transitions 0/720 dead transitions. [2023-11-29 19:09:56,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 720 transitions, 8295 flow [2023-11-29 19:09:56,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 19:09:56,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 19:09:56,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 258 transitions. [2023-11-29 19:09:56,778 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8349514563106796 [2023-11-29 19:09:56,778 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 258 transitions. [2023-11-29 19:09:56,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 258 transitions. [2023-11-29 19:09:56,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:09:56,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 258 transitions. [2023-11-29 19:09:56,779 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) [2023-11-29 19:09:56,779 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) [2023-11-29 19:09:56,779 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) [2023-11-29 19:09:56,780 INFO L307 CegarLoopForPetriNet]: 107 programPoint places, 19 predicate places. [2023-11-29 19:09:56,780 INFO L500 AbstractCegarLoop]: Abstraction has has 126 places, 720 transitions, 8295 flow [2023-11-29 19:09:56,780 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) [2023-11-29 19:09:56,780 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:09:56,780 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:09:56,780 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 19:09:56,780 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-29 19:09:56,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:09:56,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1871874092, now seen corresponding path program 1 times [2023-11-29 19:09:56,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:09:56,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656552525] [2023-11-29 19:09:56,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:09:56,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:09:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:09:56,863 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 19:09:56,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:09:56,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656552525] [2023-11-29 19:09:56,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656552525] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:09:56,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:09:56,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 19:09:56,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309109142] [2023-11-29 19:09:56,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:09:56,863 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 19:09:56,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:09:56,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 19:09:56,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 19:09:56,864 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 103 [2023-11-29 19:09:56,865 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) [2023-11-29 19:09:56,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:09:56,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 103 [2023-11-29 19:09:56,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:10:00,313 INFO L124 PetriNetUnfolderBase]: 16747/31090 cut-off events. [2023-11-29 19:10:00,313 INFO L125 PetriNetUnfolderBase]: For 40980/42949 co-relation queries the response was YES. [2023-11-29 19:10:00,392 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. [2023-11-29 19:10:00,837 INFO L140 encePairwiseOnDemand]: 90/103 looper letters, 688 selfloop transitions, 47 changer transitions 0/789 dead transitions. [2023-11-29 19:10:00,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 789 transitions, 10630 flow [2023-11-29 19:10:00,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 19:10:00,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 19:10:00,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 698 transitions. [2023-11-29 19:10:00,838 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7529665587918015 [2023-11-29 19:10:00,839 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 698 transitions. [2023-11-29 19:10:00,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 698 transitions. [2023-11-29 19:10:00,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:10:00,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 698 transitions. [2023-11-29 19:10:00,840 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) [2023-11-29 19:10:00,841 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) [2023-11-29 19:10:00,841 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) [2023-11-29 19:10:00,842 INFO L307 CegarLoopForPetriNet]: 107 programPoint places, 27 predicate places. [2023-11-29 19:10:00,842 INFO L500 AbstractCegarLoop]: Abstraction has has 134 places, 789 transitions, 10630 flow [2023-11-29 19:10:00,842 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) [2023-11-29 19:10:00,842 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:10:00,842 INFO L232 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:10:00,842 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 19:10:00,842 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-29 19:10:00,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:10:00,842 INFO L85 PathProgramCache]: Analyzing trace with hash 735767153, now seen corresponding path program 1 times [2023-11-29 19:10:00,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:10:00,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27983274] [2023-11-29 19:10:00,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:10:00,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:10:00,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:10:00,852 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 19:10:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:10:00,859 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 19:10:00,859 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-29 19:10:00,859 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-11-29 19:10:00,859 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-11-29 19:10:00,859 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-11-29 19:10:00,859 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-11-29 19:10:00,859 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-11-29 19:10:00,860 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-29 19:10:00,860 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 19:10:00,860 INFO L457 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-11-29 19:10:00,860 WARN L227 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 19:10:00,860 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-11-29 19:10:00,875 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 19:10:00,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 121 transitions, 282 flow [2023-11-29 19:10:00,884 INFO L124 PetriNetUnfolderBase]: 11/184 cut-off events. [2023-11-29 19:10:00,885 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-29 19:10:00,885 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. [2023-11-29 19:10:00,885 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 121 transitions, 282 flow [2023-11-29 19:10:00,886 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 121 transitions, 282 flow [2023-11-29 19:10:00,886 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 19:10:00,887 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;@2f79c71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 19:10:00,887 INFO L363 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-29 19:10:00,889 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 19:10:00,889 INFO L124 PetriNetUnfolderBase]: 3/62 cut-off events. [2023-11-29 19:10:00,889 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 19:10:00,889 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:10:00,889 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:10:00,889 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 19:10:00,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:10:00,889 INFO L85 PathProgramCache]: Analyzing trace with hash 143545772, now seen corresponding path program 1 times [2023-11-29 19:10:00,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:10:00,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83311226] [2023-11-29 19:10:00,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:10:00,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:10:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:10:00,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:10:00,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:10:00,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83311226] [2023-11-29 19:10:00,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83311226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:10:00,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:10:00,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 19:10:00,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107457638] [2023-11-29 19:10:00,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:10:00,943 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 19:10:00,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:10:00,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 19:10:00,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 19:10:00,944 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 121 [2023-11-29 19:10:00,944 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) [2023-11-29 19:10:00,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:10:00,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 121 [2023-11-29 19:10:00,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:11:14,931 INFO L124 PetriNetUnfolderBase]: 652015/998431 cut-off events. [2023-11-29 19:11:14,931 INFO L125 PetriNetUnfolderBase]: For 252719/252719 co-relation queries the response was YES. [2023-11-29 19:11:19,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1926818 conditions, 998431 events. 652015/998431 cut-off events. For 252719/252719 co-relation queries the response was YES. Maximal size of possible extension queue 36566. Compared 10994926 event pairs, 257393 based on Foata normal form. 187935/1009147 useless extension candidates. Maximal degree in co-relation 1655391. Up to 428973 conditions per place. [2023-11-29 19:11:26,253 INFO L140 encePairwiseOnDemand]: 105/121 looper letters, 163 selfloop transitions, 18 changer transitions 0/243 dead transitions. [2023-11-29 19:11:26,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 243 transitions, 1006 flow [2023-11-29 19:11:26,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 19:11:26,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 19:11:26,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 603 transitions. [2023-11-29 19:11:26,255 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8305785123966942 [2023-11-29 19:11:26,255 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 603 transitions. [2023-11-29 19:11:26,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 603 transitions. [2023-11-29 19:11:26,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:11:26,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 603 transitions. [2023-11-29 19:11:26,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 100.5) internal successors, (603), 6 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:11:26,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:11:26,261 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:11:26,262 INFO L307 CegarLoopForPetriNet]: 126 programPoint places, -1 predicate places. [2023-11-29 19:11:26,262 INFO L500 AbstractCegarLoop]: Abstraction has has 125 places, 243 transitions, 1006 flow [2023-11-29 19:11:26,262 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2023-11-29 19:11:26,262 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:11:26,262 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:11:26,262 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 19:11:26,262 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 19:11:26,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:11:26,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1484649879, now seen corresponding path program 1 times [2023-11-29 19:11:26,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:11:26,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234028898] [2023-11-29 19:11:26,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:11:26,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:11:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:11:26,328 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 19:11:26,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:11:26,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234028898] [2023-11-29 19:11:26,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234028898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:11:26,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:11:26,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 19:11:26,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805389585] [2023-11-29 19:11:26,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:11:26,329 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 19:11:26,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:11:26,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 19:11:26,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 19:11:26,331 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 121 [2023-11-29 19:11:26,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 243 transitions, 1006 flow. Second operand has 5 states, 5 states have (on average 69.0) internal successors, (345), 5 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:11:26,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:11:26,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 121 [2023-11-29 19:11:26,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand