/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/pthread-ext/31_simple_loop5_vs-pthread.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 14:54:05,034 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 14:54:05,092 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-12-09 14:54:05,108 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 14:54:05,109 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 14:54:05,109 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 14:54:05,109 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 14:54:05,110 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 14:54:05,110 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 14:54:05,110 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 14:54:05,110 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 14:54:05,111 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 14:54:05,111 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 14:54:05,111 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 14:54:05,111 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 14:54:05,112 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 14:54:05,112 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 14:54:05,112 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 14:54:05,112 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 14:54:05,113 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 14:54:05,113 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 14:54:05,123 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 14:54:05,123 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 14:54:05,123 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 14:54:05,123 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 14:54:05,123 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:54:05,124 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 14:54:05,124 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 14:54:05,124 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 14:54:05,124 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 14:54:05,125 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 14:54:05,125 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 14:54:05,125 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 14:54:05,125 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 14:54:05,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 14:54:05,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 14:54:05,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 14:54:05,354 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 14:54:05,355 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 14:54:05,356 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/31_simple_loop5_vs-pthread.i [2023-12-09 14:54:06,409 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 14:54:06,584 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 14:54:06,584 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/31_simple_loop5_vs-pthread.i [2023-12-09 14:54:06,594 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8556a7ea8/0e620e2581c64a1295540f5a657af5f6/FLAG185551f4d [2023-12-09 14:54:06,603 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8556a7ea8/0e620e2581c64a1295540f5a657af5f6 [2023-12-09 14:54:06,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 14:54:06,607 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 14:54:06,608 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 14:54:06,609 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 14:54:06,612 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 14:54:06,613 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:54:06" (1/1) ... [2023-12-09 14:54:06,614 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@102d7b6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:54:06, skipping insertion in model container [2023-12-09 14:54:06,614 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:54:06" (1/1) ... [2023-12-09 14:54:06,650 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 14:54:06,909 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/31_simple_loop5_vs-pthread.i[30648,30661] [2023-12-09 14:54:06,915 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:54:06,928 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 14:54:06,965 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/31_simple_loop5_vs-pthread.i[30648,30661] [2023-12-09 14:54:06,967 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:54:06,995 INFO L206 MainTranslator]: Completed translation [2023-12-09 14:54:06,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:54:06 WrapperNode [2023-12-09 14:54:06,997 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 14:54:06,998 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 14:54:06,998 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 14:54:06,998 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 14:54:07,002 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:54:06" (1/1) ... [2023-12-09 14:54:07,014 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:54:06" (1/1) ... [2023-12-09 14:54:07,033 INFO L138 Inliner]: procedures = 163, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 38 [2023-12-09 14:54:07,034 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 14:54:07,035 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 14:54:07,035 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 14:54:07,036 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 14:54:07,047 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:54:06" (1/1) ... [2023-12-09 14:54:07,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:54:06" (1/1) ... [2023-12-09 14:54:07,049 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:54:06" (1/1) ... [2023-12-09 14:54:07,049 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:54:06" (1/1) ... [2023-12-09 14:54:07,053 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:54:06" (1/1) ... [2023-12-09 14:54:07,056 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:54:06" (1/1) ... [2023-12-09 14:54:07,057 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:54:06" (1/1) ... [2023-12-09 14:54:07,058 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:54:06" (1/1) ... [2023-12-09 14:54:07,061 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 14:54:07,061 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 14:54:07,062 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 14:54:07,062 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 14:54:07,062 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:54:06" (1/1) ... [2023-12-09 14:54:07,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:54:07,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:54:07,086 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-09 14:54:07,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-09 14:54:07,111 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-12-09 14:54:07,111 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-12-09 14:54:07,111 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-12-09 14:54:07,111 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-12-09 14:54:07,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 14:54:07,112 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-12-09 14:54:07,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 14:54:07,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 14:54:07,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 14:54:07,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 14:54:07,113 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-12-09 14:54:07,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 14:54:07,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 14:54:07,114 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-09 14:54:07,213 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 14:54:07,214 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 14:54:07,322 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 14:54:07,337 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 14:54:07,337 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-09 14:54:07,339 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:54:07 BoogieIcfgContainer [2023-12-09 14:54:07,339 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 14:54:07,343 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 14:54:07,343 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 14:54:07,345 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 14:54:07,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:54:06" (1/3) ... [2023-12-09 14:54:07,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72f0215c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:54:07, skipping insertion in model container [2023-12-09 14:54:07,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:54:06" (2/3) ... [2023-12-09 14:54:07,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72f0215c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:54:07, skipping insertion in model container [2023-12-09 14:54:07,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:54:07" (3/3) ... [2023-12-09 14:54:07,347 INFO L112 eAbstractionObserver]: Analyzing ICFG 31_simple_loop5_vs-pthread.i [2023-12-09 14:54:07,359 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 14:54:07,359 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 14:54:07,360 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 14:54:07,419 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:54:07,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 71 transitions, 150 flow [2023-12-09 14:54:07,479 INFO L124 PetriNetUnfolderBase]: 7/81 cut-off events. [2023-12-09 14:54:07,480 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-09 14:54:07,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 81 events. 7/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 129 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 59. Up to 4 conditions per place. [2023-12-09 14:54:07,491 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 71 transitions, 150 flow [2023-12-09 14:54:07,498 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 70 transitions, 147 flow [2023-12-09 14:54:07,515 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:54:07,520 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;@4e1ff079, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:54:07,521 INFO L363 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-12-09 14:54:07,573 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:54:07,573 INFO L124 PetriNetUnfolderBase]: 3/47 cut-off events. [2023-12-09 14:54:07,573 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-09 14:54:07,574 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:54:07,574 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:54:07,575 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 14:54:07,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:54:07,580 INFO L85 PathProgramCache]: Analyzing trace with hash -523529738, now seen corresponding path program 1 times [2023-12-09 14:54:07,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:54:07,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915930350] [2023-12-09 14:54:07,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:54:07,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:54:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:54:07,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:54:07,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:54:07,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915930350] [2023-12-09 14:54:07,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915930350] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:54:07,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:54:07,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-09 14:54:07,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998745024] [2023-12-09 14:54:07,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:54:07,877 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-09 14:54:07,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:54:07,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-09 14:54:07,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-09 14:54:07,902 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 71 [2023-12-09 14:54:07,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 70 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:07,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:54:07,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 71 [2023-12-09 14:54:07,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:54:07,998 INFO L124 PetriNetUnfolderBase]: 57/200 cut-off events. [2023-12-09 14:54:07,999 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-12-09 14:54:07,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 200 events. 57/200 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 645 event pairs, 13 based on Foata normal form. 95/287 useless extension candidates. Maximal degree in co-relation 295. Up to 56 conditions per place. [2023-12-09 14:54:08,001 INFO L140 encePairwiseOnDemand]: 58/71 looper letters, 21 selfloop transitions, 6 changer transitions 0/67 dead transitions. [2023-12-09 14:54:08,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 67 transitions, 195 flow [2023-12-09 14:54:08,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-09 14:54:08,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-12-09 14:54:08,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 298 transitions. [2023-12-09 14:54:08,015 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8394366197183099 [2023-12-09 14:54:08,016 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 298 transitions. [2023-12-09 14:54:08,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 298 transitions. [2023-12-09 14:54:08,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:54:08,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 298 transitions. [2023-12-09 14:54:08,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:08,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 71.0) internal successors, (426), 6 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:08,023 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 71.0) internal successors, (426), 6 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:08,026 INFO L308 CegarLoopForPetriNet]: 70 programPoint places, -9 predicate places. [2023-12-09 14:54:08,026 INFO L500 AbstractCegarLoop]: Abstraction has has 61 places, 67 transitions, 195 flow [2023-12-09 14:54:08,026 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:08,026 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:54:08,026 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:54:08,026 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 14:54:08,027 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 14:54:08,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:54:08,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1414319830, now seen corresponding path program 1 times [2023-12-09 14:54:08,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:54:08,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508832192] [2023-12-09 14:54:08,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:54:08,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:54:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:54:08,054 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 14:54:08,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:54:08,079 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 14:54:08,079 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 14:54:08,081 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-12-09 14:54:08,082 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-12-09 14:54:08,082 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-12-09 14:54:08,082 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-12-09 14:54:08,082 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 14:54:08,083 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1] [2023-12-09 14:54:08,098 WARN L227 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 14:54:08,098 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-12-09 14:54:08,121 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:54:08,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 102 transitions, 224 flow [2023-12-09 14:54:08,145 INFO L124 PetriNetUnfolderBase]: 10/109 cut-off events. [2023-12-09 14:54:08,145 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 14:54:08,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 109 events. 10/109 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 198 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 116. Up to 6 conditions per place. [2023-12-09 14:54:08,147 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 102 transitions, 224 flow [2023-12-09 14:54:08,150 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 85 transitions, 183 flow [2023-12-09 14:54:08,152 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:54:08,153 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;@4e1ff079, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:54:08,153 INFO L363 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-12-09 14:54:08,161 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:54:08,161 INFO L124 PetriNetUnfolderBase]: 2/45 cut-off events. [2023-12-09 14:54:08,161 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-09 14:54:08,161 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:54:08,161 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:54:08,162 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 14:54:08,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:54:08,162 INFO L85 PathProgramCache]: Analyzing trace with hash 220678164, now seen corresponding path program 1 times [2023-12-09 14:54:08,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:54:08,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044634378] [2023-12-09 14:54:08,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:54:08,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:54:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:54:08,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:54:08,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:54:08,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044634378] [2023-12-09 14:54:08,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044634378] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:54:08,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:54:08,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-09 14:54:08,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028380576] [2023-12-09 14:54:08,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:54:08,293 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-09 14:54:08,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:54:08,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-09 14:54:08,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-09 14:54:08,294 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 102 [2023-12-09 14:54:08,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 85 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:08,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:54:08,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 102 [2023-12-09 14:54:08,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:54:08,499 INFO L124 PetriNetUnfolderBase]: 741/1496 cut-off events. [2023-12-09 14:54:08,499 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES. [2023-12-09 14:54:08,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2781 conditions, 1496 events. 741/1496 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9283 event pairs, 123 based on Foata normal form. 769/2209 useless extension candidates. Maximal degree in co-relation 2747. Up to 667 conditions per place. [2023-12-09 14:54:08,511 INFO L140 encePairwiseOnDemand]: 85/102 looper letters, 34 selfloop transitions, 9 changer transitions 0/88 dead transitions. [2023-12-09 14:54:08,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 88 transitions, 285 flow [2023-12-09 14:54:08,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-09 14:54:08,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-12-09 14:54:08,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 390 transitions. [2023-12-09 14:54:08,516 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7647058823529411 [2023-12-09 14:54:08,517 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 390 transitions. [2023-12-09 14:54:08,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 390 transitions. [2023-12-09 14:54:08,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:54:08,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 390 transitions. [2023-12-09 14:54:08,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:08,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:08,529 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:08,529 INFO L308 CegarLoopForPetriNet]: 85 programPoint places, -12 predicate places. [2023-12-09 14:54:08,530 INFO L500 AbstractCegarLoop]: Abstraction has has 73 places, 88 transitions, 285 flow [2023-12-09 14:54:08,530 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:08,530 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:54:08,530 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:54:08,530 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 14:54:08,530 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 14:54:08,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:54:08,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1432551983, now seen corresponding path program 1 times [2023-12-09 14:54:08,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:54:08,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211987262] [2023-12-09 14:54:08,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:54:08,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:54:08,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:54:08,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:54:08,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:54:08,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211987262] [2023-12-09 14:54:08,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211987262] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:54:08,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:54:08,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-09 14:54:08,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351954493] [2023-12-09 14:54:08,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:54:08,632 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 14:54:08,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:54:08,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 14:54:08,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 14:54:08,634 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 102 [2023-12-09 14:54:08,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 88 transitions, 285 flow. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:08,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:54:08,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 102 [2023-12-09 14:54:08,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:54:08,686 INFO L124 PetriNetUnfolderBase]: 57/281 cut-off events. [2023-12-09 14:54:08,686 INFO L125 PetriNetUnfolderBase]: For 254/275 co-relation queries the response was YES. [2023-12-09 14:54:08,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 629 conditions, 281 events. 57/281 cut-off events. For 254/275 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1288 event pairs, 2 based on Foata normal form. 144/416 useless extension candidates. Maximal degree in co-relation 587. Up to 90 conditions per place. [2023-12-09 14:54:08,688 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 15 selfloop transitions, 13 changer transitions 0/87 dead transitions. [2023-12-09 14:54:08,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 87 transitions, 355 flow [2023-12-09 14:54:08,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 14:54:08,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 14:54:08,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2023-12-09 14:54:08,726 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7516339869281046 [2023-12-09 14:54:08,726 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 230 transitions. [2023-12-09 14:54:08,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 230 transitions. [2023-12-09 14:54:08,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:54:08,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 230 transitions. [2023-12-09 14:54:08,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:08,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:08,728 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:08,729 INFO L308 CegarLoopForPetriNet]: 85 programPoint places, -10 predicate places. [2023-12-09 14:54:08,729 INFO L500 AbstractCegarLoop]: Abstraction has has 75 places, 87 transitions, 355 flow [2023-12-09 14:54:08,730 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:08,730 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:54:08,730 INFO L233 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:54:08,730 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 14:54:08,730 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 14:54:08,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:54:08,731 INFO L85 PathProgramCache]: Analyzing trace with hash -757088300, now seen corresponding path program 1 times [2023-12-09 14:54:08,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:54:08,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065295524] [2023-12-09 14:54:08,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:54:08,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:54:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:54:08,743 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 14:54:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:54:08,753 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 14:54:08,753 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 14:54:08,753 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-12-09 14:54:08,753 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-12-09 14:54:08,753 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-12-09 14:54:08,754 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-12-09 14:54:08,754 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-12-09 14:54:08,754 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-09 14:54:08,754 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-09 14:54:08,754 WARN L227 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 14:54:08,754 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-12-09 14:54:08,781 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:54:08,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 133 transitions, 302 flow [2023-12-09 14:54:08,798 INFO L124 PetriNetUnfolderBase]: 13/137 cut-off events. [2023-12-09 14:54:08,798 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-12-09 14:54:08,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 137 events. 13/137 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 277 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 148. Up to 8 conditions per place. [2023-12-09 14:54:08,798 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 133 transitions, 302 flow [2023-12-09 14:54:08,799 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 100 transitions, 221 flow [2023-12-09 14:54:08,801 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:54:08,804 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;@4e1ff079, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:54:08,804 INFO L363 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-12-09 14:54:08,807 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:54:08,807 INFO L124 PetriNetUnfolderBase]: 3/47 cut-off events. [2023-12-09 14:54:08,807 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-09 14:54:08,807 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:54:08,807 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:54:08,807 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-12-09 14:54:08,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:54:08,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1235345934, now seen corresponding path program 1 times [2023-12-09 14:54:08,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:54:08,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345382643] [2023-12-09 14:54:08,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:54:08,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:54:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:54:08,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:54:08,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:54:08,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345382643] [2023-12-09 14:54:08,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345382643] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:54:08,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:54:08,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-09 14:54:08,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766740977] [2023-12-09 14:54:08,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:54:08,850 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-09 14:54:08,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:54:08,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-09 14:54:08,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-09 14:54:08,852 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 133 [2023-12-09 14:54:08,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 100 transitions, 221 flow. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:08,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:54:08,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 133 [2023-12-09 14:54:08,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:54:09,867 INFO L124 PetriNetUnfolderBase]: 6541/10872 cut-off events. [2023-12-09 14:54:09,867 INFO L125 PetriNetUnfolderBase]: For 2060/2060 co-relation queries the response was YES. [2023-12-09 14:54:09,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21050 conditions, 10872 events. 6541/10872 cut-off events. For 2060/2060 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 80175 event pairs, 1031 based on Foata normal form. 5323/15852 useless extension candidates. Maximal degree in co-relation 21015. Up to 5683 conditions per place. [2023-12-09 14:54:09,964 INFO L140 encePairwiseOnDemand]: 112/133 looper letters, 47 selfloop transitions, 12 changer transitions 0/109 dead transitions. [2023-12-09 14:54:09,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 109 transitions, 381 flow [2023-12-09 14:54:09,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-09 14:54:09,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-12-09 14:54:09,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 482 transitions. [2023-12-09 14:54:09,966 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.724812030075188 [2023-12-09 14:54:09,966 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 482 transitions. [2023-12-09 14:54:09,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 482 transitions. [2023-12-09 14:54:09,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:54:09,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 482 transitions. [2023-12-09 14:54:09,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 96.4) internal successors, (482), 5 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:09,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:09,969 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:09,970 INFO L308 CegarLoopForPetriNet]: 100 programPoint places, -15 predicate places. [2023-12-09 14:54:09,970 INFO L500 AbstractCegarLoop]: Abstraction has has 85 places, 109 transitions, 381 flow [2023-12-09 14:54:09,970 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:09,970 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:54:09,970 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:54:09,970 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-09 14:54:09,970 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-12-09 14:54:09,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:54:09,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1035506327, now seen corresponding path program 1 times [2023-12-09 14:54:09,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:54:09,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540388388] [2023-12-09 14:54:09,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:54:09,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:54:09,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:54:10,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:54:10,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:54:10,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540388388] [2023-12-09 14:54:10,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540388388] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:54:10,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:54:10,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-09 14:54:10,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532557791] [2023-12-09 14:54:10,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:54:10,013 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 14:54:10,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:54:10,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 14:54:10,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 14:54:10,014 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 133 [2023-12-09 14:54:10,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 109 transitions, 381 flow. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:10,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:54:10,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 133 [2023-12-09 14:54:10,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:54:10,172 INFO L124 PetriNetUnfolderBase]: 199/793 cut-off events. [2023-12-09 14:54:10,172 INFO L125 PetriNetUnfolderBase]: For 1247/1262 co-relation queries the response was YES. [2023-12-09 14:54:10,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1958 conditions, 793 events. 199/793 cut-off events. For 1247/1262 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5283 event pairs, 14 based on Foata normal form. 624/1399 useless extension candidates. Maximal degree in co-relation 1915. Up to 311 conditions per place. [2023-12-09 14:54:10,176 INFO L140 encePairwiseOnDemand]: 125/133 looper letters, 21 selfloop transitions, 17 changer transitions 0/109 dead transitions. [2023-12-09 14:54:10,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 109 transitions, 496 flow [2023-12-09 14:54:10,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 14:54:10,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 14:54:10,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2023-12-09 14:54:10,177 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.731829573934837 [2023-12-09 14:54:10,177 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 292 transitions. [2023-12-09 14:54:10,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 292 transitions. [2023-12-09 14:54:10,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:54:10,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 292 transitions. [2023-12-09 14:54:10,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:10,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:10,179 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:10,180 INFO L308 CegarLoopForPetriNet]: 100 programPoint places, -13 predicate places. [2023-12-09 14:54:10,180 INFO L500 AbstractCegarLoop]: Abstraction has has 87 places, 109 transitions, 496 flow [2023-12-09 14:54:10,180 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:10,180 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:54:10,180 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:54:10,180 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-09 14:54:10,181 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-12-09 14:54:10,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:54:10,181 INFO L85 PathProgramCache]: Analyzing trace with hash 630718745, now seen corresponding path program 1 times [2023-12-09 14:54:10,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:54:10,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748139672] [2023-12-09 14:54:10,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:54:10,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:54:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:54:10,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:54:10,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:54:10,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748139672] [2023-12-09 14:54:10,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748139672] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:54:10,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:54:10,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 14:54:10,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456518078] [2023-12-09 14:54:10,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:54:10,263 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 14:54:10,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:54:10,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 14:54:10,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-09 14:54:10,264 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 133 [2023-12-09 14:54:10,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 109 transitions, 496 flow. Second operand has 6 states, 6 states have (on average 76.16666666666667) internal successors, (457), 6 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:10,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:54:10,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 133 [2023-12-09 14:54:10,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:54:10,447 INFO L124 PetriNetUnfolderBase]: 317/1157 cut-off events. [2023-12-09 14:54:10,447 INFO L125 PetriNetUnfolderBase]: For 1855/1915 co-relation queries the response was YES. [2023-12-09 14:54:10,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3819 conditions, 1157 events. 317/1157 cut-off events. For 1855/1915 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9191 event pairs, 12 based on Foata normal form. 4/1144 useless extension candidates. Maximal degree in co-relation 3771. Up to 502 conditions per place. [2023-12-09 14:54:10,455 INFO L140 encePairwiseOnDemand]: 121/133 looper letters, 90 selfloop transitions, 17 changer transitions 0/153 dead transitions. [2023-12-09 14:54:10,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 153 transitions, 1000 flow [2023-12-09 14:54:10,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-09 14:54:10,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-12-09 14:54:10,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 589 transitions. [2023-12-09 14:54:10,459 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6326530612244898 [2023-12-09 14:54:10,459 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 589 transitions. [2023-12-09 14:54:10,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 589 transitions. [2023-12-09 14:54:10,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:54:10,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 589 transitions. [2023-12-09 14:54:10,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.14285714285714) internal successors, (589), 7 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:10,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 133.0) internal successors, (1064), 8 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:10,462 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 133.0) internal successors, (1064), 8 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:10,463 INFO L308 CegarLoopForPetriNet]: 100 programPoint places, -7 predicate places. [2023-12-09 14:54:10,463 INFO L500 AbstractCegarLoop]: Abstraction has has 93 places, 153 transitions, 1000 flow [2023-12-09 14:54:10,463 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.16666666666667) internal successors, (457), 6 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:10,463 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:54:10,463 INFO L233 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:54:10,463 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-09 14:54:10,464 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-12-09 14:54:10,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:54:10,464 INFO L85 PathProgramCache]: Analyzing trace with hash 759351781, now seen corresponding path program 1 times [2023-12-09 14:54:10,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:54:10,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53863128] [2023-12-09 14:54:10,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:54:10,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:54:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:54:10,475 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 14:54:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:54:10,485 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 14:54:10,485 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 14:54:10,485 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-12-09 14:54:10,486 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-12-09 14:54:10,486 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-12-09 14:54:10,486 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-12-09 14:54:10,486 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-12-09 14:54:10,486 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-12-09 14:54:10,486 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-09 14:54:10,486 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-12-09 14:54:10,487 WARN L227 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 14:54:10,487 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-12-09 14:54:10,512 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:54:10,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 164 transitions, 384 flow [2023-12-09 14:54:10,525 INFO L124 PetriNetUnfolderBase]: 16/165 cut-off events. [2023-12-09 14:54:10,525 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-12-09 14:54:10,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 165 events. 16/165 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 349 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 181. Up to 10 conditions per place. [2023-12-09 14:54:10,526 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 164 transitions, 384 flow [2023-12-09 14:54:10,527 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 115 transitions, 261 flow [2023-12-09 14:54:10,528 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:54:10,528 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;@4e1ff079, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:54:10,528 INFO L363 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-12-09 14:54:10,530 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:54:10,530 INFO L124 PetriNetUnfolderBase]: 2/45 cut-off events. [2023-12-09 14:54:10,531 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-09 14:54:10,531 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:54:10,531 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:54:10,531 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:54:10,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:54:10,531 INFO L85 PathProgramCache]: Analyzing trace with hash -596634736, now seen corresponding path program 1 times [2023-12-09 14:54:10,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:54:10,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584748367] [2023-12-09 14:54:10,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:54:10,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:54:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:54:10,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:54:10,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:54:10,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584748367] [2023-12-09 14:54:10,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584748367] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:54:10,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:54:10,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-09 14:54:10,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006113520] [2023-12-09 14:54:10,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:54:10,563 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-09 14:54:10,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:54:10,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-09 14:54:10,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-09 14:54:10,564 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 164 [2023-12-09 14:54:10,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 115 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:10,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:54:10,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 164 [2023-12-09 14:54:10,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:54:17,254 INFO L124 PetriNetUnfolderBase]: 51105/76562 cut-off events. [2023-12-09 14:54:17,255 INFO L125 PetriNetUnfolderBase]: For 20343/20343 co-relation queries the response was YES. [2023-12-09 14:54:17,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151129 conditions, 76562 events. 51105/76562 cut-off events. For 20343/20343 co-relation queries the response was YES. Maximal size of possible extension queue 2691. Compared 617316 event pairs, 8509 based on Foata normal form. 35573/109978 useless extension candidates. Maximal degree in co-relation 151093. Up to 43454 conditions per place. [2023-12-09 14:54:18,421 INFO L140 encePairwiseOnDemand]: 139/164 looper letters, 60 selfloop transitions, 15 changer transitions 0/130 dead transitions. [2023-12-09 14:54:18,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 130 transitions, 483 flow [2023-12-09 14:54:18,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-09 14:54:18,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-12-09 14:54:18,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 574 transitions. [2023-12-09 14:54:18,423 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7 [2023-12-09 14:54:18,423 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 574 transitions. [2023-12-09 14:54:18,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 574 transitions. [2023-12-09 14:54:18,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:54:18,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 574 transitions. [2023-12-09 14:54:18,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.8) internal successors, (574), 5 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:18,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:18,426 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:18,426 INFO L308 CegarLoopForPetriNet]: 115 programPoint places, -18 predicate places. [2023-12-09 14:54:18,426 INFO L500 AbstractCegarLoop]: Abstraction has has 97 places, 130 transitions, 483 flow [2023-12-09 14:54:18,427 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:18,427 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:54:18,427 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:54:18,427 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-09 14:54:18,427 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:54:18,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:54:18,427 INFO L85 PathProgramCache]: Analyzing trace with hash 356850656, now seen corresponding path program 1 times [2023-12-09 14:54:18,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:54:18,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332526550] [2023-12-09 14:54:18,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:54:18,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:54:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:54:18,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:54:18,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:54:18,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332526550] [2023-12-09 14:54:18,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332526550] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:54:18,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:54:18,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-09 14:54:18,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987555273] [2023-12-09 14:54:18,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:54:18,482 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 14:54:18,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:54:18,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 14:54:18,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 14:54:18,483 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 164 [2023-12-09 14:54:18,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 130 transitions, 483 flow. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:18,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:54:18,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 164 [2023-12-09 14:54:18,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:54:18,823 INFO L124 PetriNetUnfolderBase]: 572/1880 cut-off events. [2023-12-09 14:54:18,823 INFO L125 PetriNetUnfolderBase]: For 4803/4906 co-relation queries the response was YES. [2023-12-09 14:54:18,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5289 conditions, 1880 events. 572/1880 cut-off events. For 4803/4906 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 15355 event pairs, 18 based on Foata normal form. 2222/4057 useless extension candidates. Maximal degree in co-relation 5245. Up to 896 conditions per place. [2023-12-09 14:54:18,836 INFO L140 encePairwiseOnDemand]: 154/164 looper letters, 27 selfloop transitions, 21 changer transitions 0/131 dead transitions. [2023-12-09 14:54:18,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 131 transitions, 649 flow [2023-12-09 14:54:18,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 14:54:18,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 14:54:18,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2023-12-09 14:54:18,838 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7195121951219512 [2023-12-09 14:54:18,838 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2023-12-09 14:54:18,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2023-12-09 14:54:18,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:54:18,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2023-12-09 14:54:18,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:18,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:18,840 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:18,841 INFO L308 CegarLoopForPetriNet]: 115 programPoint places, -16 predicate places. [2023-12-09 14:54:18,841 INFO L500 AbstractCegarLoop]: Abstraction has has 99 places, 131 transitions, 649 flow [2023-12-09 14:54:18,842 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:18,842 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:54:18,842 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:54:18,842 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-09 14:54:18,842 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:54:18,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:54:18,842 INFO L85 PathProgramCache]: Analyzing trace with hash -786357084, now seen corresponding path program 1 times [2023-12-09 14:54:18,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:54:18,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745557537] [2023-12-09 14:54:18,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:54:18,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:54:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:54:18,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:54:18,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:54:18,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745557537] [2023-12-09 14:54:18,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745557537] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:54:18,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:54:18,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 14:54:18,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952193166] [2023-12-09 14:54:18,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:54:18,947 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 14:54:18,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:54:18,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 14:54:18,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-09 14:54:18,948 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 164 [2023-12-09 14:54:18,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 131 transitions, 649 flow. Second operand has 6 states, 6 states have (on average 89.16666666666667) internal successors, (535), 6 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:18,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:54:18,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 164 [2023-12-09 14:54:18,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:54:19,415 INFO L124 PetriNetUnfolderBase]: 852/2630 cut-off events. [2023-12-09 14:54:19,415 INFO L125 PetriNetUnfolderBase]: For 6425/6710 co-relation queries the response was YES. [2023-12-09 14:54:19,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9778 conditions, 2630 events. 852/2630 cut-off events. For 6425/6710 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 24159 event pairs, 6 based on Foata normal form. 0/2585 useless extension candidates. Maximal degree in co-relation 9729. Up to 1407 conditions per place. [2023-12-09 14:54:19,430 INFO L140 encePairwiseOnDemand]: 149/164 looper letters, 118 selfloop transitions, 22 changer transitions 0/190 dead transitions. [2023-12-09 14:54:19,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 190 transitions, 1349 flow [2023-12-09 14:54:19,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-09 14:54:19,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-12-09 14:54:19,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 700 transitions. [2023-12-09 14:54:19,433 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6097560975609756 [2023-12-09 14:54:19,433 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 700 transitions. [2023-12-09 14:54:19,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 700 transitions. [2023-12-09 14:54:19,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:54:19,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 700 transitions. [2023-12-09 14:54:19,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:19,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 164.0) internal successors, (1312), 8 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:19,436 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 164.0) internal successors, (1312), 8 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:19,437 INFO L308 CegarLoopForPetriNet]: 115 programPoint places, -10 predicate places. [2023-12-09 14:54:19,437 INFO L500 AbstractCegarLoop]: Abstraction has has 105 places, 190 transitions, 1349 flow [2023-12-09 14:54:19,437 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.16666666666667) internal successors, (535), 6 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:19,437 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:54:19,438 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 1] [2023-12-09 14:54:19,438 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-09 14:54:19,438 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:54:19,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:54:19,438 INFO L85 PathProgramCache]: Analyzing trace with hash 785257327, now seen corresponding path program 1 times [2023-12-09 14:54:19,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:54:19,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354602388] [2023-12-09 14:54:19,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:54:19,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:54:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:54:19,579 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:54:19,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:54:19,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354602388] [2023-12-09 14:54:19,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354602388] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:54:19,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660599947] [2023-12-09 14:54:19,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:54:19,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:54:19,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:54:19,604 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 14:54:19,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-09 14:54:19,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:54:19,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-09 14:54:19,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:54:19,936 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:54:19,936 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:54:20,063 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:54:20,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660599947] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:54:20,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:54:20,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2023-12-09 14:54:20,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069244572] [2023-12-09 14:54:20,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:54:20,065 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-09 14:54:20,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:54:20,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-09 14:54:20,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2023-12-09 14:54:20,068 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 164 [2023-12-09 14:54:20,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 190 transitions, 1349 flow. Second operand has 23 states, 23 states have (on average 88.6086956521739) internal successors, (2038), 23 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:20,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:54:20,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 164 [2023-12-09 14:54:20,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:54:21,259 INFO L124 PetriNetUnfolderBase]: 1826/5756 cut-off events. [2023-12-09 14:54:21,259 INFO L125 PetriNetUnfolderBase]: For 16392/16817 co-relation queries the response was YES. [2023-12-09 14:54:21,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25319 conditions, 5756 events. 1826/5756 cut-off events. For 16392/16817 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 60894 event pairs, 4 based on Foata normal form. 81/5778 useless extension candidates. Maximal degree in co-relation 25264. Up to 3690 conditions per place. [2023-12-09 14:54:21,310 INFO L140 encePairwiseOnDemand]: 144/164 looper letters, 204 selfloop transitions, 59 changer transitions 0/312 dead transitions. [2023-12-09 14:54:21,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 312 transitions, 3002 flow [2023-12-09 14:54:21,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-09 14:54:21,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-12-09 14:54:21,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1283 transitions. [2023-12-09 14:54:21,314 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.601782363977486 [2023-12-09 14:54:21,314 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1283 transitions. [2023-12-09 14:54:21,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1283 transitions. [2023-12-09 14:54:21,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:54:21,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1283 transitions. [2023-12-09 14:54:21,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 98.6923076923077) internal successors, (1283), 13 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:21,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 164.0) internal successors, (2296), 14 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:21,320 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 164.0) internal successors, (2296), 14 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:21,320 INFO L308 CegarLoopForPetriNet]: 115 programPoint places, 2 predicate places. [2023-12-09 14:54:21,320 INFO L500 AbstractCegarLoop]: Abstraction has has 117 places, 312 transitions, 3002 flow [2023-12-09 14:54:21,321 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 88.6086956521739) internal successors, (2038), 23 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:21,321 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:54:21,321 INFO L233 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:54:21,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-09 14:54:21,522 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-09 14:54:21,522 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:54:21,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:54:21,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1414678822, now seen corresponding path program 1 times [2023-12-09 14:54:21,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:54:21,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303877803] [2023-12-09 14:54:21,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:54:21,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:54:21,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:54:21,534 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 14:54:21,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:54:21,544 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 14:54:21,545 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 14:54:21,545 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-12-09 14:54:21,545 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-12-09 14:54:21,545 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-12-09 14:54:21,545 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2023-12-09 14:54:21,545 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-12-09 14:54:21,545 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-12-09 14:54:21,545 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-12-09 14:54:21,546 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-09 14:54:21,546 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-12-09 14:54:21,546 WARN L227 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 14:54:21,546 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-12-09 14:54:21,639 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:54:21,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 195 transitions, 470 flow [2023-12-09 14:54:21,656 INFO L124 PetriNetUnfolderBase]: 19/193 cut-off events. [2023-12-09 14:54:21,657 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-12-09 14:54:21,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 193 events. 19/193 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 421 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 215. Up to 12 conditions per place. [2023-12-09 14:54:21,657 INFO L82 GeneralOperation]: Start removeDead. Operand has 191 places, 195 transitions, 470 flow [2023-12-09 14:54:21,659 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 130 transitions, 303 flow [2023-12-09 14:54:21,662 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:54:21,662 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;@4e1ff079, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:54:21,662 INFO L363 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-12-09 14:54:21,665 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:54:21,665 INFO L124 PetriNetUnfolderBase]: 2/45 cut-off events. [2023-12-09 14:54:21,665 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-09 14:54:21,665 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:54:21,665 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:54:21,665 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-12-09 14:54:21,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:54:21,665 INFO L85 PathProgramCache]: Analyzing trace with hash 361804398, now seen corresponding path program 1 times [2023-12-09 14:54:21,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:54:21,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904712038] [2023-12-09 14:54:21,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:54:21,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:54:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:54:21,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:54:21,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:54:21,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904712038] [2023-12-09 14:54:21,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904712038] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:54:21,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:54:21,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-09 14:54:21,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319107990] [2023-12-09 14:54:21,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:54:21,699 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-09 14:54:21,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:54:21,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-09 14:54:21,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-09 14:54:21,699 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 195 [2023-12-09 14:54:21,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 130 transitions, 303 flow. Second operand has 4 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:54:21,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:54:21,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 195 [2023-12-09 14:54:21,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:55:23,039 INFO L124 PetriNetUnfolderBase]: 377649/528776 cut-off events. [2023-12-09 14:55:23,039 INFO L125 PetriNetUnfolderBase]: For 180607/180607 co-relation queries the response was YES. [2023-12-09 14:55:26,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1057164 conditions, 528776 events. 377649/528776 cut-off events. For 180607/180607 co-relation queries the response was YES. Maximal size of possible extension queue 14983. Compared 4516364 event pairs, 68205 based on Foata normal form. 235591/750829 useless extension candidates. Maximal degree in co-relation 1057127. Up to 315904 conditions per place. [2023-12-09 14:55:30,549 INFO L140 encePairwiseOnDemand]: 166/195 looper letters, 73 selfloop transitions, 18 changer transitions 0/151 dead transitions. [2023-12-09 14:55:30,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 151 transitions, 591 flow [2023-12-09 14:55:30,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-09 14:55:30,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-12-09 14:55:30,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 666 transitions. [2023-12-09 14:55:30,552 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.683076923076923 [2023-12-09 14:55:30,552 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 666 transitions. [2023-12-09 14:55:30,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 666 transitions. [2023-12-09 14:55:30,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:55:30,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 666 transitions. [2023-12-09 14:55:30,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 133.2) internal successors, (666), 5 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:55:30,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 195.0) internal successors, (1170), 6 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:55:30,555 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 195.0) internal successors, (1170), 6 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:55:30,555 INFO L308 CegarLoopForPetriNet]: 130 programPoint places, -21 predicate places. [2023-12-09 14:55:30,555 INFO L500 AbstractCegarLoop]: Abstraction has has 109 places, 151 transitions, 591 flow [2023-12-09 14:55:30,556 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:55:30,556 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:55:30,556 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:55:30,556 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-09 14:55:30,556 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-12-09 14:55:30,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:55:30,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1314605164, now seen corresponding path program 1 times [2023-12-09 14:55:30,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:55:30,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587450123] [2023-12-09 14:55:30,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:55:30,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:55:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:55:30,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:55:30,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:55:30,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587450123] [2023-12-09 14:55:30,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587450123] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:55:30,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:55:30,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-09 14:55:30,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312560535] [2023-12-09 14:55:30,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:55:30,628 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 14:55:30,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:55:30,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 14:55:30,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 14:55:30,629 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 195 [2023-12-09 14:55:30,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 151 transitions, 591 flow. Second operand has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:55:30,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:55:30,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 195 [2023-12-09 14:55:30,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:55:31,248 INFO L124 PetriNetUnfolderBase]: 1492/4541 cut-off events. [2023-12-09 14:55:31,249 INFO L125 PetriNetUnfolderBase]: For 16522/16697 co-relation queries the response was YES. [2023-12-09 14:55:31,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13789 conditions, 4541 events. 1492/4541 cut-off events. For 16522/16697 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 43307 event pairs, 65 based on Foata normal form. 6952/11407 useless extension candidates. Maximal degree in co-relation 13744. Up to 2345 conditions per place. [2023-12-09 14:55:31,280 INFO L140 encePairwiseOnDemand]: 183/195 looper letters, 33 selfloop transitions, 25 changer transitions 0/153 dead transitions. [2023-12-09 14:55:31,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 153 transitions, 814 flow [2023-12-09 14:55:31,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 14:55:31,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 14:55:31,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 416 transitions. [2023-12-09 14:55:31,282 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7111111111111111 [2023-12-09 14:55:31,282 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 416 transitions. [2023-12-09 14:55:31,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 416 transitions. [2023-12-09 14:55:31,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:55:31,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 416 transitions. [2023-12-09 14:55:31,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:55:31,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:55:31,284 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:55:31,284 INFO L308 CegarLoopForPetriNet]: 130 programPoint places, -19 predicate places. [2023-12-09 14:55:31,284 INFO L500 AbstractCegarLoop]: Abstraction has has 111 places, 153 transitions, 814 flow [2023-12-09 14:55:31,284 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:55:31,300 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:55:31,301 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:55:31,301 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-09 14:55:31,301 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-12-09 14:55:31,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:55:31,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1954267987, now seen corresponding path program 1 times [2023-12-09 14:55:31,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:55:31,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920836509] [2023-12-09 14:55:31,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:55:31,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:55:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:55:31,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:55:31,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:55:31,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920836509] [2023-12-09 14:55:31,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920836509] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:55:31,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:55:31,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 14:55:31,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051588099] [2023-12-09 14:55:31,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:55:31,446 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 14:55:31,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:55:31,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 14:55:31,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-09 14:55:31,447 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 195 [2023-12-09 14:55:31,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 153 transitions, 814 flow. Second operand has 6 states, 6 states have (on average 102.16666666666667) internal successors, (613), 6 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:55:31,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:55:31,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 195 [2023-12-09 14:55:31,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:55:32,301 INFO L124 PetriNetUnfolderBase]: 2055/5966 cut-off events. [2023-12-09 14:55:32,302 INFO L125 PetriNetUnfolderBase]: For 20269/20617 co-relation queries the response was YES. [2023-12-09 14:55:32,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23611 conditions, 5966 events. 2055/5966 cut-off events. For 20269/20617 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 61660 event pairs, 33 based on Foata normal form. 12/5897 useless extension candidates. Maximal degree in co-relation 23561. Up to 3613 conditions per place. [2023-12-09 14:55:32,348 INFO L140 encePairwiseOnDemand]: 177/195 looper letters, 146 selfloop transitions, 27 changer transitions 0/227 dead transitions. [2023-12-09 14:55:32,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 227 transitions, 1722 flow [2023-12-09 14:55:32,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-09 14:55:32,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-12-09 14:55:32,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 811 transitions. [2023-12-09 14:55:32,359 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5941391941391941 [2023-12-09 14:55:32,359 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 811 transitions. [2023-12-09 14:55:32,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 811 transitions. [2023-12-09 14:55:32,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:55:32,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 811 transitions. [2023-12-09 14:55:32,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 115.85714285714286) internal successors, (811), 7 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:55:32,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 195.0) internal successors, (1560), 8 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:55:32,371 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 195.0) internal successors, (1560), 8 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:55:32,376 INFO L308 CegarLoopForPetriNet]: 130 programPoint places, -13 predicate places. [2023-12-09 14:55:32,377 INFO L500 AbstractCegarLoop]: Abstraction has has 117 places, 227 transitions, 1722 flow [2023-12-09 14:55:32,377 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 102.16666666666667) internal successors, (613), 6 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:55:32,377 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:55:32,377 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 1] [2023-12-09 14:55:32,378 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-09 14:55:32,378 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-12-09 14:55:32,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:55:32,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1511881393, now seen corresponding path program 1 times [2023-12-09 14:55:32,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:55:32,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690577995] [2023-12-09 14:55:32,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:55:32,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:55:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:55:32,567 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:55:32,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:55:32,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690577995] [2023-12-09 14:55:32,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690577995] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:55:32,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235483477] [2023-12-09 14:55:32,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:55:32,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:55:32,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:55:32,604 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 14:55:32,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-09 14:55:32,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:55:32,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-09 14:55:32,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:55:33,019 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:55:33,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:55:33,218 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:55:33,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235483477] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:55:33,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:55:33,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2023-12-09 14:55:33,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893763409] [2023-12-09 14:55:33,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:55:33,219 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-09 14:55:33,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:55:33,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-09 14:55:33,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2023-12-09 14:55:33,221 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 195 [2023-12-09 14:55:33,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 227 transitions, 1722 flow. Second operand has 23 states, 23 states have (on average 101.6086956521739) internal successors, (2337), 23 states have internal predecessors, (2337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:55:33,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:55:33,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 195 [2023-12-09 14:55:33,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:55:35,999 INFO L124 PetriNetUnfolderBase]: 4411/12660 cut-off events. [2023-12-09 14:55:35,999 INFO L125 PetriNetUnfolderBase]: For 49013/49962 co-relation queries the response was YES. [2023-12-09 14:55:36,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60289 conditions, 12660 events. 4411/12660 cut-off events. For 49013/49962 co-relation queries the response was YES. Maximal size of possible extension queue 823. Compared 149307 event pairs, 8 based on Foata normal form. 118/12654 useless extension candidates. Maximal degree in co-relation 60233. Up to 8803 conditions per place. [2023-12-09 14:55:36,110 INFO L140 encePairwiseOnDemand]: 171/195 looper letters, 254 selfloop transitions, 73 changer transitions 0/380 dead transitions. [2023-12-09 14:55:36,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 380 transitions, 3866 flow [2023-12-09 14:55:36,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-09 14:55:36,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-12-09 14:55:36,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1490 transitions. [2023-12-09 14:55:36,120 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5877712031558185 [2023-12-09 14:55:36,120 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1490 transitions. [2023-12-09 14:55:36,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1490 transitions. [2023-12-09 14:55:36,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:55:36,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1490 transitions. [2023-12-09 14:55:36,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 114.61538461538461) internal successors, (1490), 13 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:55:36,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:55:36,159 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:55:36,159 INFO L308 CegarLoopForPetriNet]: 130 programPoint places, -1 predicate places. [2023-12-09 14:55:36,160 INFO L500 AbstractCegarLoop]: Abstraction has has 129 places, 380 transitions, 3866 flow [2023-12-09 14:55:36,160 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 101.6086956521739) internal successors, (2337), 23 states have internal predecessors, (2337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:55:36,160 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:55:36,161 INFO L233 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:55:36,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-09 14:55:36,366 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-09 14:55:36,366 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-12-09 14:55:36,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:55:36,367 INFO L85 PathProgramCache]: Analyzing trace with hash -2118749677, now seen corresponding path program 2 times [2023-12-09 14:55:36,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:55:36,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553677363] [2023-12-09 14:55:36,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:55:36,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:55:36,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:55:36,476 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:55:36,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:55:36,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553677363] [2023-12-09 14:55:36,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553677363] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:55:36,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611205115] [2023-12-09 14:55:36,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 14:55:36,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:55:36,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:55:36,478 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 14:55:36,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-09 14:55:36,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 14:55:36,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 14:55:36,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-09 14:55:36,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:55:36,855 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:55:36,855 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:55:37,033 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:55:37,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611205115] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:55:37,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:55:37,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 26 [2023-12-09 14:55:37,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543948680] [2023-12-09 14:55:37,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:55:37,034 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-09 14:55:37,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:55:37,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-09 14:55:37,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2023-12-09 14:55:37,036 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 195 [2023-12-09 14:55:37,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 380 transitions, 3866 flow. Second operand has 26 states, 26 states have (on average 101.96153846153847) internal successors, (2651), 26 states have internal predecessors, (2651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:55:37,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:55:37,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 195 [2023-12-09 14:55:37,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand