/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/weaver/mult-comm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-29 21:21:10,931 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 21:21:10,987 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-29 21:21:11,014 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 21:21:11,015 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 21:21:11,015 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 21:21:11,015 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 21:21:11,016 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 21:21:11,016 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 21:21:11,019 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 21:21:11,019 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 21:21:11,019 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 21:21:11,019 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 21:21:11,020 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 21:21:11,020 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 21:21:11,020 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 21:21:11,020 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 21:21:11,021 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 21:21:11,021 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 21:21:11,021 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 21:21:11,021 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 21:21:11,021 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 21:21:11,022 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 21:21:11,022 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-29 21:21:11,022 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 21:21:11,023 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 21:21:11,023 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 21:21:11,023 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 21:21:11,023 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 21:21:11,023 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 21:21:11,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 21:21:11,024 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 21:21:11,024 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 21:21:11,024 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-11-29 21:21:11,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 21:21:11,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 21:21:11,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 21:21:11,226 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 21:21:11,226 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 21:21:11,227 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/mult-comm.wvr.c [2023-11-29 21:21:12,175 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 21:21:12,332 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 21:21:12,332 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-comm.wvr.c [2023-11-29 21:21:12,339 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf734107f/4e4f483612c44cae95d8fac751f6bb2c/FLAGb5a1db93e [2023-11-29 21:21:12,352 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf734107f/4e4f483612c44cae95d8fac751f6bb2c [2023-11-29 21:21:12,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 21:21:12,354 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-29 21:21:12,357 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 21:21:12,357 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 21:21:12,360 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 21:21:12,360 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:21:12" (1/1) ... [2023-11-29 21:21:12,361 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59e8b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:21:12, skipping insertion in model container [2023-11-29 21:21:12,361 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:21:12" (1/1) ... [2023-11-29 21:21:12,378 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 21:21:12,510 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-comm.wvr.c[1936,1949] [2023-11-29 21:21:12,513 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 21:21:12,526 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 21:21:12,545 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-comm.wvr.c[1936,1949] [2023-11-29 21:21:12,549 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 21:21:12,558 INFO L206 MainTranslator]: Completed translation [2023-11-29 21:21:12,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:21:12 WrapperNode [2023-11-29 21:21:12,558 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 21:21:12,559 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 21:21:12,559 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 21:21:12,559 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 21:21:12,563 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:21:12" (1/1) ... [2023-11-29 21:21:12,569 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:21:12" (1/1) ... [2023-11-29 21:21:12,582 INFO L138 Inliner]: procedures = 21, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2023-11-29 21:21:12,583 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 21:21:12,583 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 21:21:12,583 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 21:21:12,583 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 21:21:12,589 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:21:12" (1/1) ... [2023-11-29 21:21:12,589 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:21:12" (1/1) ... [2023-11-29 21:21:12,597 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:21:12" (1/1) ... [2023-11-29 21:21:12,597 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:21:12" (1/1) ... [2023-11-29 21:21:12,606 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:21:12" (1/1) ... [2023-11-29 21:21:12,608 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:21:12" (1/1) ... [2023-11-29 21:21:12,609 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:21:12" (1/1) ... [2023-11-29 21:21:12,610 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:21:12" (1/1) ... [2023-11-29 21:21:12,611 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 21:21:12,611 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 21:21:12,612 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 21:21:12,612 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 21:21:12,614 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:21:12" (1/1) ... [2023-11-29 21:21:12,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 21:21:12,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:21:12,633 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-29 21:21:12,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-29 21:21:12,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 21:21:12,668 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 21:21:12,668 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 21:21:12,668 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 21:21:12,668 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 21:21:12,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 21:21:12,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 21:21:12,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 21:21:12,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 21:21:12,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 21:21:12,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 21:21:12,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 21:21:12,669 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 21:21:12,731 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 21:21:12,732 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 21:21:12,839 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 21:21:12,845 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 21:21:12,845 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 21:21:12,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:21:12 BoogieIcfgContainer [2023-11-29 21:21:12,846 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 21:21:12,848 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 21:21:12,848 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 21:21:12,850 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 21:21:12,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 09:21:12" (1/3) ... [2023-11-29 21:21:12,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55a67dc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:21:12, skipping insertion in model container [2023-11-29 21:21:12,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:21:12" (2/3) ... [2023-11-29 21:21:12,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55a67dc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:21:12, skipping insertion in model container [2023-11-29 21:21:12,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:21:12" (3/3) ... [2023-11-29 21:21:12,851 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-comm.wvr.c [2023-11-29 21:21:12,861 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 21:21:12,861 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 21:21:12,862 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 21:21:12,913 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 21:21:12,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 82 transitions, 178 flow [2023-11-29 21:21:12,992 INFO L124 PetriNetUnfolderBase]: 5/80 cut-off events. [2023-11-29 21:21:12,992 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 21:21:12,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 80 events. 5/80 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2023-11-29 21:21:12,996 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 82 transitions, 178 flow [2023-11-29 21:21:12,998 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 71 transitions, 154 flow [2023-11-29 21:21:13,010 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 21:21:13,015 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;@4ffc7e80, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 21:21:13,015 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-29 21:21:13,053 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 21:21:13,054 INFO L124 PetriNetUnfolderBase]: 5/70 cut-off events. [2023-11-29 21:21:13,054 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 21:21:13,054 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:21:13,054 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:21:13,055 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:21:13,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:21:13,058 INFO L85 PathProgramCache]: Analyzing trace with hash 386390710, now seen corresponding path program 1 times [2023-11-29 21:21:13,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:21:13,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048750809] [2023-11-29 21:21:13,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:21:13,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:21:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:21:13,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:21:13,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:21:13,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048750809] [2023-11-29 21:21:13,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048750809] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:21:13,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:21:13,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 21:21:13,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466621771] [2023-11-29 21:21:13,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:21:13,665 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 21:21:13,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:21:13,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 21:21:13,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 21:21:13,696 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 82 [2023-11-29 21:21:13,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 71 transitions, 154 flow. Second operand has 6 states, 6 states have (on average 65.0) internal successors, (390), 6 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) [2023-11-29 21:21:13,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:21:13,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 82 [2023-11-29 21:21:13,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:21:13,834 INFO L124 PetriNetUnfolderBase]: 12/145 cut-off events. [2023-11-29 21:21:13,834 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2023-11-29 21:21:13,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 145 events. 12/145 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 359 event pairs, 1 based on Foata normal form. 17/151 useless extension candidates. Maximal degree in co-relation 97. Up to 22 conditions per place. [2023-11-29 21:21:13,837 INFO L140 encePairwiseOnDemand]: 71/82 looper letters, 23 selfloop transitions, 5 changer transitions 7/88 dead transitions. [2023-11-29 21:21:13,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 88 transitions, 273 flow [2023-11-29 21:21:13,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 21:21:13,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 21:21:13,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 549 transitions. [2023-11-29 21:21:13,851 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.836890243902439 [2023-11-29 21:21:13,851 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 549 transitions. [2023-11-29 21:21:13,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 549 transitions. [2023-11-29 21:21:13,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:21:13,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 549 transitions. [2023-11-29 21:21:13,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 68.625) internal successors, (549), 8 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:13,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 82.0) internal successors, (738), 9 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:13,885 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 82.0) internal successors, (738), 9 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:13,888 INFO L307 CegarLoopForPetriNet]: 73 programPoint places, 7 predicate places. [2023-11-29 21:21:13,888 INFO L500 AbstractCegarLoop]: Abstraction has has 80 places, 88 transitions, 273 flow [2023-11-29 21:21:13,888 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.0) internal successors, (390), 6 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) [2023-11-29 21:21:13,889 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:21:13,889 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:21:13,889 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 21:21:13,889 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:21:13,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:21:13,890 INFO L85 PathProgramCache]: Analyzing trace with hash 898533476, now seen corresponding path program 1 times [2023-11-29 21:21:13,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:21:13,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843383155] [2023-11-29 21:21:13,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:21:13,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:21:13,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:21:14,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:21:14,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:21:14,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843383155] [2023-11-29 21:21:14,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843383155] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:21:14,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722023784] [2023-11-29 21:21:14,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:21:14,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:21:14,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:21:14,249 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) [2023-11-29 21:21:14,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 21:21:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:21:14,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 21:21:14,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:21:14,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:21:14,558 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:21:14,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:21:14,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722023784] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:21:14,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:21:14,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 17 [2023-11-29 21:21:14,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671172796] [2023-11-29 21:21:14,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:21:14,775 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 21:21:14,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:21:14,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 21:21:14,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 21:21:14,778 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 82 [2023-11-29 21:21:14,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 88 transitions, 273 flow. Second operand has 17 states, 17 states have (on average 52.11764705882353) internal successors, (886), 17 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:14,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:21:14,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 82 [2023-11-29 21:21:14,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:21:15,173 INFO L124 PetriNetUnfolderBase]: 259/776 cut-off events. [2023-11-29 21:21:15,173 INFO L125 PetriNetUnfolderBase]: For 359/368 co-relation queries the response was YES. [2023-11-29 21:21:15,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1638 conditions, 776 events. 259/776 cut-off events. For 359/368 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4661 event pairs, 14 based on Foata normal form. 3/682 useless extension candidates. Maximal degree in co-relation 1232. Up to 147 conditions per place. [2023-11-29 21:21:15,178 INFO L140 encePairwiseOnDemand]: 66/82 looper letters, 120 selfloop transitions, 34 changer transitions 36/229 dead transitions. [2023-11-29 21:21:15,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 229 transitions, 1102 flow [2023-11-29 21:21:15,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 21:21:15,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-29 21:21:15,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1565 transitions. [2023-11-29 21:21:15,181 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6816202090592335 [2023-11-29 21:21:15,181 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1565 transitions. [2023-11-29 21:21:15,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1565 transitions. [2023-11-29 21:21:15,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:21:15,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1565 transitions. [2023-11-29 21:21:15,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 55.892857142857146) internal successors, (1565), 28 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:15,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 82.0) internal successors, (2378), 29 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:15,188 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 82.0) internal successors, (2378), 29 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:15,188 INFO L307 CegarLoopForPetriNet]: 73 programPoint places, 34 predicate places. [2023-11-29 21:21:15,188 INFO L500 AbstractCegarLoop]: Abstraction has has 107 places, 229 transitions, 1102 flow [2023-11-29 21:21:15,189 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 52.11764705882353) internal successors, (886), 17 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:15,189 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:21:15,189 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:21:15,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 21:21:15,394 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:21:15,394 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:21:15,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:21:15,395 INFO L85 PathProgramCache]: Analyzing trace with hash 558949160, now seen corresponding path program 2 times [2023-11-29 21:21:15,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:21:15,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245507858] [2023-11-29 21:21:15,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:21:15,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:21:15,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:21:15,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:21:15,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:21:15,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245507858] [2023-11-29 21:21:15,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245507858] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:21:15,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58931991] [2023-11-29 21:21:15,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 21:21:15,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:21:15,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:21:15,659 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) [2023-11-29 21:21:15,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 21:21:15,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 21:21:15,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:21:15,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 21:21:15,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:21:15,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:21:15,891 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:21:16,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:21:16,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58931991] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:21:16,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:21:16,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 13 [2023-11-29 21:21:16,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720137342] [2023-11-29 21:21:16,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:21:16,054 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 21:21:16,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:21:16,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 21:21:16,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-11-29 21:21:16,055 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 82 [2023-11-29 21:21:16,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 229 transitions, 1102 flow. Second operand has 13 states, 13 states have (on average 57.38461538461539) internal successors, (746), 13 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:16,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:21:16,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 82 [2023-11-29 21:21:16,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:21:16,265 INFO L124 PetriNetUnfolderBase]: 273/846 cut-off events. [2023-11-29 21:21:16,265 INFO L125 PetriNetUnfolderBase]: For 703/722 co-relation queries the response was YES. [2023-11-29 21:21:16,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2209 conditions, 846 events. 273/846 cut-off events. For 703/722 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5286 event pairs, 17 based on Foata normal form. 3/748 useless extension candidates. Maximal degree in co-relation 1737. Up to 285 conditions per place. [2023-11-29 21:21:16,270 INFO L140 encePairwiseOnDemand]: 69/82 looper letters, 86 selfloop transitions, 12 changer transitions 64/255 dead transitions. [2023-11-29 21:21:16,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 255 transitions, 1589 flow [2023-11-29 21:21:16,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 21:21:16,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 21:21:16,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 894 transitions. [2023-11-29 21:21:16,272 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7268292682926829 [2023-11-29 21:21:16,272 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 894 transitions. [2023-11-29 21:21:16,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 894 transitions. [2023-11-29 21:21:16,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:21:16,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 894 transitions. [2023-11-29 21:21:16,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 59.6) internal successors, (894), 15 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:16,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 82.0) internal successors, (1312), 16 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) [2023-11-29 21:21:16,275 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 82.0) internal successors, (1312), 16 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) [2023-11-29 21:21:16,276 INFO L307 CegarLoopForPetriNet]: 73 programPoint places, 48 predicate places. [2023-11-29 21:21:16,276 INFO L500 AbstractCegarLoop]: Abstraction has has 121 places, 255 transitions, 1589 flow [2023-11-29 21:21:16,276 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 57.38461538461539) internal successors, (746), 13 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:16,276 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:21:16,276 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:21:16,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 21:21:16,481 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,SelfDestructingSolverStorable2 [2023-11-29 21:21:16,481 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:21:16,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:21:16,482 INFO L85 PathProgramCache]: Analyzing trace with hash -509909178, now seen corresponding path program 3 times [2023-11-29 21:21:16,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:21:16,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826189086] [2023-11-29 21:21:16,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:21:16,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:21:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:21:16,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:21:16,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:21:16,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826189086] [2023-11-29 21:21:16,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826189086] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:21:16,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070407213] [2023-11-29 21:21:16,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 21:21:16,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:21:16,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:21:16,679 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) [2023-11-29 21:21:16,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 21:21:16,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 21:21:16,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:21:16,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 21:21:16,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:21:16,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:21:16,931 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:21:17,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:21:17,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070407213] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:21:17,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:21:17,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 9] total 18 [2023-11-29 21:21:17,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92902941] [2023-11-29 21:21:17,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:21:17,165 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 21:21:17,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:21:17,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 21:21:17,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2023-11-29 21:21:17,167 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 82 [2023-11-29 21:21:17,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 255 transitions, 1589 flow. Second operand has 18 states, 18 states have (on average 50.111111111111114) internal successors, (902), 18 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:17,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:21:17,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 82 [2023-11-29 21:21:17,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:21:17,568 INFO L124 PetriNetUnfolderBase]: 384/1145 cut-off events. [2023-11-29 21:21:17,568 INFO L125 PetriNetUnfolderBase]: For 1308/1385 co-relation queries the response was YES. [2023-11-29 21:21:17,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3815 conditions, 1145 events. 384/1145 cut-off events. For 1308/1385 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7611 event pairs, 7 based on Foata normal form. 5/1017 useless extension candidates. Maximal degree in co-relation 2773. Up to 425 conditions per place. [2023-11-29 21:21:17,575 INFO L140 encePairwiseOnDemand]: 67/82 looper letters, 185 selfloop transitions, 52 changer transitions 109/383 dead transitions. [2023-11-29 21:21:17,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 383 transitions, 3047 flow [2023-11-29 21:21:17,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 21:21:17,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-29 21:21:17,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1353 transitions. [2023-11-29 21:21:17,577 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.66 [2023-11-29 21:21:17,577 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1353 transitions. [2023-11-29 21:21:17,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1353 transitions. [2023-11-29 21:21:17,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:21:17,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1353 transitions. [2023-11-29 21:21:17,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 54.12) internal successors, (1353), 25 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:17,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 82.0) internal successors, (2132), 26 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:17,582 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 82.0) internal successors, (2132), 26 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:17,583 INFO L307 CegarLoopForPetriNet]: 73 programPoint places, 72 predicate places. [2023-11-29 21:21:17,583 INFO L500 AbstractCegarLoop]: Abstraction has has 145 places, 383 transitions, 3047 flow [2023-11-29 21:21:17,583 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 50.111111111111114) internal successors, (902), 18 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:17,583 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:21:17,584 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:21:17,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 21:21:17,788 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:21:17,789 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:21:17,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:21:17,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1036192466, now seen corresponding path program 1 times [2023-11-29 21:21:17,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:21:17,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102696676] [2023-11-29 21:21:17,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:21:17,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:21:17,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:21:18,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:21:18,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:21:18,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102696676] [2023-11-29 21:21:18,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102696676] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:21:18,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69675053] [2023-11-29 21:21:18,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:21:18,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:21:18,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:21:18,028 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:21:18,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 21:21:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:21:18,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 21:21:18,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:21:18,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:21:18,222 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:21:18,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:21:18,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69675053] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:21:18,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:21:18,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 13 [2023-11-29 21:21:18,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930822739] [2023-11-29 21:21:18,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:21:18,353 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 21:21:18,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:21:18,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 21:21:18,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-11-29 21:21:18,357 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 82 [2023-11-29 21:21:18,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 383 transitions, 3047 flow. Second operand has 13 states, 13 states have (on average 57.38461538461539) internal successors, (746), 13 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:18,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:21:18,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 82 [2023-11-29 21:21:18,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:21:18,685 INFO L124 PetriNetUnfolderBase]: 396/1211 cut-off events. [2023-11-29 21:21:18,685 INFO L125 PetriNetUnfolderBase]: For 2196/2340 co-relation queries the response was YES. [2023-11-29 21:21:18,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4591 conditions, 1211 events. 396/1211 cut-off events. For 2196/2340 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 8318 event pairs, 16 based on Foata normal form. 10/1084 useless extension candidates. Maximal degree in co-relation 3626. Up to 453 conditions per place. [2023-11-29 21:21:18,691 INFO L140 encePairwiseOnDemand]: 69/82 looper letters, 170 selfloop transitions, 17 changer transitions 133/399 dead transitions. [2023-11-29 21:21:18,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 399 transitions, 3826 flow [2023-11-29 21:21:18,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 21:21:18,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 21:21:18,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 891 transitions. [2023-11-29 21:21:18,693 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.724390243902439 [2023-11-29 21:21:18,693 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 891 transitions. [2023-11-29 21:21:18,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 891 transitions. [2023-11-29 21:21:18,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:21:18,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 891 transitions. [2023-11-29 21:21:18,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 59.4) internal successors, (891), 15 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:18,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 82.0) internal successors, (1312), 16 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) [2023-11-29 21:21:18,697 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 82.0) internal successors, (1312), 16 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) [2023-11-29 21:21:18,697 INFO L307 CegarLoopForPetriNet]: 73 programPoint places, 86 predicate places. [2023-11-29 21:21:18,697 INFO L500 AbstractCegarLoop]: Abstraction has has 159 places, 399 transitions, 3826 flow [2023-11-29 21:21:18,698 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 57.38461538461539) internal successors, (746), 13 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:18,698 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:21:18,698 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:21:18,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 21:21:18,903 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:21:18,903 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:21:18,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:21:18,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1886867064, now seen corresponding path program 2 times [2023-11-29 21:21:18,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:21:18,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880943196] [2023-11-29 21:21:18,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:21:18,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:21:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:21:19,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:21:19,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:21:19,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880943196] [2023-11-29 21:21:19,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880943196] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:21:19,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723618990] [2023-11-29 21:21:19,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 21:21:19,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:21:19,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:21:19,118 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:21:19,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 21:21:19,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 21:21:19,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:21:19,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 21:21:19,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:21:19,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:21:19,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:21:19,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:21:19,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723618990] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:21:19,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:21:19,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 14 [2023-11-29 21:21:19,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325885960] [2023-11-29 21:21:19,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:21:19,547 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 21:21:19,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:21:19,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 21:21:19,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-11-29 21:21:19,548 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 82 [2023-11-29 21:21:19,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 399 transitions, 3826 flow. Second operand has 14 states, 14 states have (on average 57.357142857142854) internal successors, (803), 14 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:19,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:21:19,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 82 [2023-11-29 21:21:19,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:21:19,849 INFO L124 PetriNetUnfolderBase]: 480/1426 cut-off events. [2023-11-29 21:21:19,849 INFO L125 PetriNetUnfolderBase]: For 3707/3843 co-relation queries the response was YES. [2023-11-29 21:21:19,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6090 conditions, 1426 events. 480/1426 cut-off events. For 3707/3843 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 10186 event pairs, 47 based on Foata normal form. 10/1270 useless extension candidates. Maximal degree in co-relation 4520. Up to 472 conditions per place. [2023-11-29 21:21:19,858 INFO L140 encePairwiseOnDemand]: 70/82 looper letters, 141 selfloop transitions, 84 changer transitions 144/448 dead transitions. [2023-11-29 21:21:19,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 448 transitions, 5059 flow [2023-11-29 21:21:19,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 21:21:19,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 21:21:19,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1013 transitions. [2023-11-29 21:21:19,861 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7266857962697274 [2023-11-29 21:21:19,861 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1013 transitions. [2023-11-29 21:21:19,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1013 transitions. [2023-11-29 21:21:19,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:21:19,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1013 transitions. [2023-11-29 21:21:19,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 59.588235294117645) internal successors, (1013), 17 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:19,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 82.0) internal successors, (1476), 18 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:19,866 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 82.0) internal successors, (1476), 18 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:19,867 INFO L307 CegarLoopForPetriNet]: 73 programPoint places, 102 predicate places. [2023-11-29 21:21:19,868 INFO L500 AbstractCegarLoop]: Abstraction has has 175 places, 448 transitions, 5059 flow [2023-11-29 21:21:19,868 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 57.357142857142854) internal successors, (803), 14 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:19,868 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:21:19,868 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:21:19,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 21:21:20,073 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:21:20,073 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:21:20,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:21:20,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1109533248, now seen corresponding path program 3 times [2023-11-29 21:21:20,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:21:20,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902619200] [2023-11-29 21:21:20,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:21:20,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:21:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:21:20,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:21:20,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:21:20,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902619200] [2023-11-29 21:21:20,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902619200] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:21:20,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728613142] [2023-11-29 21:21:20,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 21:21:20,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:21:20,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:21:20,262 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:21:20,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 21:21:20,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 21:21:20,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:21:20,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 21:21:20,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:21:20,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:21:20,492 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:21:20,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:21:20,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728613142] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:21:20,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:21:20,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 15 [2023-11-29 21:21:20,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845759350] [2023-11-29 21:21:20,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:21:20,639 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 21:21:20,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:21:20,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 21:21:20,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-11-29 21:21:20,642 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 82 [2023-11-29 21:21:20,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 448 transitions, 5059 flow. Second operand has 15 states, 15 states have (on average 57.266666666666666) internal successors, (859), 15 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:20,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:21:20,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 82 [2023-11-29 21:21:20,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:21:20,996 INFO L124 PetriNetUnfolderBase]: 570/1700 cut-off events. [2023-11-29 21:21:20,996 INFO L125 PetriNetUnfolderBase]: For 6532/6704 co-relation queries the response was YES. [2023-11-29 21:21:21,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8144 conditions, 1700 events. 570/1700 cut-off events. For 6532/6704 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 12853 event pairs, 54 based on Foata normal form. 5/1512 useless extension candidates. Maximal degree in co-relation 6951. Up to 496 conditions per place. [2023-11-29 21:21:21,007 INFO L140 encePairwiseOnDemand]: 68/82 looper letters, 159 selfloop transitions, 105 changer transitions 167/510 dead transitions. [2023-11-29 21:21:21,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 510 transitions, 6741 flow [2023-11-29 21:21:21,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 21:21:21,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-29 21:21:21,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1415 transitions. [2023-11-29 21:21:21,027 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7190040650406504 [2023-11-29 21:21:21,027 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1415 transitions. [2023-11-29 21:21:21,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1415 transitions. [2023-11-29 21:21:21,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:21:21,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1415 transitions. [2023-11-29 21:21:21,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 58.958333333333336) internal successors, (1415), 24 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:21,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 82.0) internal successors, (2050), 25 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:21,031 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 82.0) internal successors, (2050), 25 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:21,031 INFO L307 CegarLoopForPetriNet]: 73 programPoint places, 125 predicate places. [2023-11-29 21:21:21,032 INFO L500 AbstractCegarLoop]: Abstraction has has 198 places, 510 transitions, 6741 flow [2023-11-29 21:21:21,033 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 57.266666666666666) internal successors, (859), 15 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:21,033 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:21:21,033 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:21:21,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 21:21:21,233 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:21:21,234 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:21:21,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:21:21,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1611374566, now seen corresponding path program 1 times [2023-11-29 21:21:21,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:21:21,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276794106] [2023-11-29 21:21:21,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:21:21,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:21:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:21:21,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:21:21,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:21:21,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276794106] [2023-11-29 21:21:21,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276794106] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:21:21,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783987202] [2023-11-29 21:21:21,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:21:21,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:21:21,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:21:21,917 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:21:21,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 21:21:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:21:21,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 21:21:21,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:21:22,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:21:22,438 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:21:23,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:21:23,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783987202] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:21:23,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:21:23,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 17] total 37 [2023-11-29 21:21:23,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549617588] [2023-11-29 21:21:23,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:21:23,281 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-29 21:21:23,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:21:23,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-29 21:21:23,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1161, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 21:21:23,283 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 82 [2023-11-29 21:21:23,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 510 transitions, 6741 flow. Second operand has 37 states, 37 states have (on average 46.86486486486486) internal successors, (1734), 37 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:23,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:21:23,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 82 [2023-11-29 21:21:23,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:21:29,947 INFO L124 PetriNetUnfolderBase]: 782/2337 cut-off events. [2023-11-29 21:21:29,947 INFO L125 PetriNetUnfolderBase]: For 11307/11697 co-relation queries the response was YES. [2023-11-29 21:21:29,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12663 conditions, 2337 events. 782/2337 cut-off events. For 11307/11697 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 19002 event pairs, 52 based on Foata normal form. 64/2168 useless extension candidates. Maximal degree in co-relation 9007. Up to 764 conditions per place. [2023-11-29 21:21:29,967 INFO L140 encePairwiseOnDemand]: 56/82 looper letters, 281 selfloop transitions, 297 changer transitions 359/972 dead transitions. [2023-11-29 21:21:29,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 972 transitions, 14194 flow [2023-11-29 21:21:29,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2023-11-29 21:21:29,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2023-11-29 21:21:29,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 5639 transitions. [2023-11-29 21:21:29,980 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5979851537645812 [2023-11-29 21:21:29,980 INFO L72 ComplementDD]: Start complementDD. Operand 115 states and 5639 transitions. [2023-11-29 21:21:29,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 5639 transitions. [2023-11-29 21:21:29,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:21:29,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 115 states and 5639 transitions. [2023-11-29 21:21:29,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 116 states, 115 states have (on average 49.03478260869565) internal successors, (5639), 115 states have internal predecessors, (5639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:30,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 116 states, 116 states have (on average 82.0) internal successors, (9512), 116 states have internal predecessors, (9512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:30,011 INFO L81 ComplementDD]: Finished complementDD. Result has 116 states, 116 states have (on average 82.0) internal successors, (9512), 116 states have internal predecessors, (9512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:30,013 INFO L307 CegarLoopForPetriNet]: 73 programPoint places, 239 predicate places. [2023-11-29 21:21:30,014 INFO L500 AbstractCegarLoop]: Abstraction has has 312 places, 972 transitions, 14194 flow [2023-11-29 21:21:30,014 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 46.86486486486486) internal successors, (1734), 37 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:30,014 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:21:30,014 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:21:30,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 21:21:30,231 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:21:30,231 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:21:30,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:21:30,232 INFO L85 PathProgramCache]: Analyzing trace with hash -100500832, now seen corresponding path program 2 times [2023-11-29 21:21:30,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:21:30,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131565483] [2023-11-29 21:21:30,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:21:30,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:21:30,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:21:31,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:21:31,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:21:31,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131565483] [2023-11-29 21:21:31,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131565483] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:21:31,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415064477] [2023-11-29 21:21:31,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 21:21:31,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:21:31,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:21:31,094 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:21:31,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 21:21:31,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 21:21:31,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:21:31,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 21:21:31,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:21:31,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:21:31,940 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:21:32,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:21:32,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415064477] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:21:32,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:21:32,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 17] total 38 [2023-11-29 21:21:32,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281043595] [2023-11-29 21:21:32,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:21:32,975 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-29 21:21:32,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:21:32,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-29 21:21:32,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1222, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 21:21:32,978 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 82 [2023-11-29 21:21:32,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 972 transitions, 14194 flow. Second operand has 38 states, 38 states have (on average 46.81578947368421) internal successors, (1779), 38 states have internal predecessors, (1779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:32,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:21:32,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 82 [2023-11-29 21:21:32,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:21:57,987 INFO L124 PetriNetUnfolderBase]: 1366/4056 cut-off events. [2023-11-29 21:21:57,988 INFO L125 PetriNetUnfolderBase]: For 22571/23053 co-relation queries the response was YES. [2023-11-29 21:21:57,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25027 conditions, 4056 events. 1366/4056 cut-off events. For 22571/23053 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 37031 event pairs, 33 based on Foata normal form. 136/3807 useless extension candidates. Maximal degree in co-relation 17948. Up to 1740 conditions per place. [2023-11-29 21:21:58,012 INFO L140 encePairwiseOnDemand]: 56/82 looper letters, 451 selfloop transitions, 1011 changer transitions 572/2069 dead transitions. [2023-11-29 21:21:58,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 2069 transitions, 33367 flow [2023-11-29 21:21:58,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 247 states. [2023-11-29 21:21:58,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2023-11-29 21:21:58,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 12116 transitions. [2023-11-29 21:21:58,022 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5982028241335045 [2023-11-29 21:21:58,022 INFO L72 ComplementDD]: Start complementDD. Operand 247 states and 12116 transitions. [2023-11-29 21:21:58,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 247 states and 12116 transitions. [2023-11-29 21:21:58,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:21:58,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 247 states and 12116 transitions. [2023-11-29 21:21:58,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 248 states, 247 states have (on average 49.05263157894737) internal successors, (12116), 247 states have internal predecessors, (12116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:58,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 248 states, 248 states have (on average 82.0) internal successors, (20336), 248 states have internal predecessors, (20336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:58,055 INFO L81 ComplementDD]: Finished complementDD. Result has 248 states, 248 states have (on average 82.0) internal successors, (20336), 248 states have internal predecessors, (20336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:58,056 INFO L307 CegarLoopForPetriNet]: 73 programPoint places, 485 predicate places. [2023-11-29 21:21:58,056 INFO L500 AbstractCegarLoop]: Abstraction has has 558 places, 2069 transitions, 33367 flow [2023-11-29 21:21:58,056 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 46.81578947368421) internal successors, (1779), 38 states have internal predecessors, (1779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:58,056 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:21:58,056 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:21:58,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 21:21:58,260 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 21:21:58,261 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:21:58,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:21:58,261 INFO L85 PathProgramCache]: Analyzing trace with hash 371491914, now seen corresponding path program 3 times [2023-11-29 21:21:58,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:21:58,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869176532] [2023-11-29 21:21:58,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:21:58,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:21:58,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:21:58,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:21:58,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:21:58,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869176532] [2023-11-29 21:21:58,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869176532] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:21:58,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811155373] [2023-11-29 21:21:58,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 21:21:58,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:21:58,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:21:58,887 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:21:58,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 21:21:58,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 21:21:58,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:21:58,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 21:21:58,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:21:59,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:21:59,567 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:22:00,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:22:00,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811155373] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:22:00,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:22:00,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 17] total 38 [2023-11-29 21:22:00,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072547989] [2023-11-29 21:22:00,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:22:00,459 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-29 21:22:00,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:22:00,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-29 21:22:00,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1227, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 21:22:00,461 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 82 [2023-11-29 21:22:00,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 2069 transitions, 33367 flow. Second operand has 38 states, 38 states have (on average 46.86842105263158) internal successors, (1781), 38 states have internal predecessors, (1781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:22:00,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:22:00,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 82 [2023-11-29 21:22:00,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:22:10,710 INFO L124 PetriNetUnfolderBase]: 1465/4463 cut-off events. [2023-11-29 21:22:10,711 INFO L125 PetriNetUnfolderBase]: For 28300/28818 co-relation queries the response was YES. [2023-11-29 21:22:10,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30848 conditions, 4463 events. 1465/4463 cut-off events. For 28300/28818 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 42298 event pairs, 32 based on Foata normal form. 140/4196 useless extension candidates. Maximal degree in co-relation 24585. Up to 1900 conditions per place. [2023-11-29 21:22:10,740 INFO L140 encePairwiseOnDemand]: 56/82 looper letters, 793 selfloop transitions, 801 changer transitions 655/2284 dead transitions. [2023-11-29 21:22:10,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 696 places, 2284 transitions, 41483 flow [2023-11-29 21:22:10,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2023-11-29 21:22:10,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2023-11-29 21:22:10,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 6811 transitions. [2023-11-29 21:22:10,746 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5975609756097561 [2023-11-29 21:22:10,746 INFO L72 ComplementDD]: Start complementDD. Operand 139 states and 6811 transitions. [2023-11-29 21:22:10,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 139 states and 6811 transitions. [2023-11-29 21:22:10,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:22:10,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 139 states and 6811 transitions. [2023-11-29 21:22:10,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 140 states, 139 states have (on average 49.0) internal successors, (6811), 139 states have internal predecessors, (6811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:22:10,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 140 states, 140 states have (on average 82.0) internal successors, (11480), 140 states have internal predecessors, (11480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:22:10,775 INFO L81 ComplementDD]: Finished complementDD. Result has 140 states, 140 states have (on average 82.0) internal successors, (11480), 140 states have internal predecessors, (11480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:22:10,775 INFO L307 CegarLoopForPetriNet]: 73 programPoint places, 623 predicate places. [2023-11-29 21:22:10,775 INFO L500 AbstractCegarLoop]: Abstraction has has 696 places, 2284 transitions, 41483 flow [2023-11-29 21:22:10,776 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 46.86842105263158) internal successors, (1781), 38 states have internal predecessors, (1781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:22:10,776 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:22:10,776 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:22:10,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 21:22:10,976 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 21:22:10,977 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:22:10,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:22:10,977 INFO L85 PathProgramCache]: Analyzing trace with hash 691434146, now seen corresponding path program 4 times [2023-11-29 21:22:10,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:22:10,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497838427] [2023-11-29 21:22:10,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:22:10,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:22:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:22:11,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:22:11,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:22:11,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497838427] [2023-11-29 21:22:11,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497838427] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:22:11,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824568592] [2023-11-29 21:22:11,862 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 21:22:11,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:22:11,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:22:11,863 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:22:11,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 21:22:11,925 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 21:22:11,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:22:11,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 21:22:11,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:22:13,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:22:13,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:22:13,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:22:13,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824568592] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:22:13,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:22:13,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 17] total 38 [2023-11-29 21:22:13,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804013634] [2023-11-29 21:22:13,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:22:13,920 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-29 21:22:13,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:22:13,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-29 21:22:13,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1221, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 21:22:13,923 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 82 [2023-11-29 21:22:13,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 696 places, 2284 transitions, 41483 flow. Second operand has 38 states, 38 states have (on average 46.8421052631579) internal successors, (1780), 38 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:22:13,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:22:13,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 82 [2023-11-29 21:22:13,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:22:29,096 INFO L124 PetriNetUnfolderBase]: 1688/5094 cut-off events. [2023-11-29 21:22:29,096 INFO L125 PetriNetUnfolderBase]: For 36513/37127 co-relation queries the response was YES. [2023-11-29 21:22:29,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39301 conditions, 5094 events. 1688/5094 cut-off events. For 36513/37127 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 49326 event pairs, 29 based on Foata normal form. 173/4800 useless extension candidates. Maximal degree in co-relation 27949. Up to 2255 conditions per place. [2023-11-29 21:22:29,127 INFO L140 encePairwiseOnDemand]: 56/82 looper letters, 666 selfloop transitions, 1284 changer transitions 754/2739 dead transitions. [2023-11-29 21:22:29,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 876 places, 2739 transitions, 54911 flow [2023-11-29 21:22:29,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2023-11-29 21:22:29,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2023-11-29 21:22:29,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 8914 transitions. [2023-11-29 21:22:29,134 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6005929120064681 [2023-11-29 21:22:29,134 INFO L72 ComplementDD]: Start complementDD. Operand 181 states and 8914 transitions. [2023-11-29 21:22:29,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 181 states and 8914 transitions. [2023-11-29 21:22:29,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:22:29,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 181 states and 8914 transitions. [2023-11-29 21:22:29,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 182 states, 181 states have (on average 49.248618784530386) internal successors, (8914), 181 states have internal predecessors, (8914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:22:29,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 182 states, 182 states have (on average 82.0) internal successors, (14924), 182 states have internal predecessors, (14924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:22:29,158 INFO L81 ComplementDD]: Finished complementDD. Result has 182 states, 182 states have (on average 82.0) internal successors, (14924), 182 states have internal predecessors, (14924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:22:29,158 INFO L307 CegarLoopForPetriNet]: 73 programPoint places, 803 predicate places. [2023-11-29 21:22:29,158 INFO L500 AbstractCegarLoop]: Abstraction has has 876 places, 2739 transitions, 54911 flow [2023-11-29 21:22:29,158 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 46.8421052631579) internal successors, (1780), 38 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:22:29,158 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:22:29,159 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:22:29,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 21:22:29,363 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 21:22:29,364 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:22:29,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:22:29,365 INFO L85 PathProgramCache]: Analyzing trace with hash -475247162, now seen corresponding path program 5 times [2023-11-29 21:22:29,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:22:29,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354960961] [2023-11-29 21:22:29,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:22:29,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:22:29,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:22:30,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:22:30,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:22:30,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354960961] [2023-11-29 21:22:30,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354960961] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:22:30,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399432947] [2023-11-29 21:22:30,135 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 21:22:30,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:22:30,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:22:30,139 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:22:30,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 21:22:30,198 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 21:22:30,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:22:30,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 21:22:30,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:22:31,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:22:31,536 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:22:32,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:22:32,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399432947] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:22:32,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:22:32,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2023-11-29 21:22:32,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978902447] [2023-11-29 21:22:32,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:22:32,655 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-29 21:22:32,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:22:32,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-29 21:22:32,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1298, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 21:22:32,658 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 82 [2023-11-29 21:22:32,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 876 places, 2739 transitions, 54911 flow. Second operand has 39 states, 39 states have (on average 46.82051282051282) internal successors, (1826), 39 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:22:32,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:22:32,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 82 [2023-11-29 21:22:32,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:22:38,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:22:40,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:22:50,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:22:53,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:23:14,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:23:34,062 INFO L124 PetriNetUnfolderBase]: 1951/6200 cut-off events. [2023-11-29 21:23:34,063 INFO L125 PetriNetUnfolderBase]: For 52183/53262 co-relation queries the response was YES. [2023-11-29 21:23:34,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52024 conditions, 6200 events. 1951/6200 cut-off events. For 52183/53262 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 64225 event pairs, 41 based on Foata normal form. 266/5939 useless extension candidates. Maximal degree in co-relation 35495. Up to 2830 conditions per place. [2023-11-29 21:23:34,103 INFO L140 encePairwiseOnDemand]: 56/82 looper letters, 826 selfloop transitions, 1581 changer transitions 928/3370 dead transitions. [2023-11-29 21:23:34,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1130 places, 3370 transitions, 74721 flow [2023-11-29 21:23:34,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 255 states. [2023-11-29 21:23:34,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2023-11-29 21:23:34,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 12414 transitions. [2023-11-29 21:23:34,111 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5936872309899569 [2023-11-29 21:23:34,111 INFO L72 ComplementDD]: Start complementDD. Operand 255 states and 12414 transitions. [2023-11-29 21:23:34,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 255 states and 12414 transitions. [2023-11-29 21:23:34,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:23:34,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 255 states and 12414 transitions. [2023-11-29 21:23:34,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 256 states, 255 states have (on average 48.68235294117647) internal successors, (12414), 255 states have internal predecessors, (12414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:23:34,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 256 states, 256 states have (on average 82.0) internal successors, (20992), 256 states have internal predecessors, (20992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:23:34,141 INFO L81 ComplementDD]: Finished complementDD. Result has 256 states, 256 states have (on average 82.0) internal successors, (20992), 256 states have internal predecessors, (20992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:23:34,142 INFO L307 CegarLoopForPetriNet]: 73 programPoint places, 1057 predicate places. [2023-11-29 21:23:34,142 INFO L500 AbstractCegarLoop]: Abstraction has has 1130 places, 3370 transitions, 74721 flow [2023-11-29 21:23:34,143 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 46.82051282051282) internal successors, (1826), 39 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:23:34,143 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:23:34,143 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:23:34,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 21:23:34,363 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 21:23:34,363 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:23:34,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:23:34,364 INFO L85 PathProgramCache]: Analyzing trace with hash 293765632, now seen corresponding path program 6 times [2023-11-29 21:23:34,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:23:34,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912507123] [2023-11-29 21:23:34,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:23:34,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:23:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:23:35,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:23:35,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:23:35,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912507123] [2023-11-29 21:23:35,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912507123] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:23:35,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610271925] [2023-11-29 21:23:35,128 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 21:23:35,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:23:35,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:23:35,129 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:23:35,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 21:23:35,200 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-29 21:23:35,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:23:35,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 21:23:35,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:23:35,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:23:35,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:23:36,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:23:36,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610271925] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:23:36,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:23:36,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 17] total 38 [2023-11-29 21:23:36,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789534435] [2023-11-29 21:23:36,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:23:36,808 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-29 21:23:36,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:23:36,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-29 21:23:36,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1232, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 21:23:36,811 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 82 [2023-11-29 21:23:36,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1130 places, 3370 transitions, 74721 flow. Second operand has 38 states, 38 states have (on average 46.86842105263158) internal successors, (1781), 38 states have internal predecessors, (1781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:23:36,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:23:36,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 82 [2023-11-29 21:23:36,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:23:52,270 INFO L124 PetriNetUnfolderBase]: 2068/6576 cut-off events. [2023-11-29 21:23:52,270 INFO L125 PetriNetUnfolderBase]: For 62110/63319 co-relation queries the response was YES. [2023-11-29 21:23:52,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60290 conditions, 6576 events. 2068/6576 cut-off events. For 62110/63319 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 69038 event pairs, 43 based on Foata normal form. 271/6286 useless extension candidates. Maximal degree in co-relation 41101. Up to 3040 conditions per place. [2023-11-29 21:23:52,320 INFO L140 encePairwiseOnDemand]: 56/82 looper letters, 1240 selfloop transitions, 1353 changer transitions 974/3602 dead transitions. [2023-11-29 21:23:52,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1286 places, 3602 transitions, 87019 flow [2023-11-29 21:23:52,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2023-11-29 21:23:52,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2023-11-29 21:23:52,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 7678 transitions. [2023-11-29 21:23:52,345 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5963958365698306 [2023-11-29 21:23:52,345 INFO L72 ComplementDD]: Start complementDD. Operand 157 states and 7678 transitions. [2023-11-29 21:23:52,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 157 states and 7678 transitions. [2023-11-29 21:23:52,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:23:52,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 157 states and 7678 transitions. [2023-11-29 21:23:52,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 158 states, 157 states have (on average 48.904458598726116) internal successors, (7678), 157 states have internal predecessors, (7678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:23:52,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 158 states, 158 states have (on average 82.0) internal successors, (12956), 158 states have internal predecessors, (12956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:23:52,369 INFO L81 ComplementDD]: Finished complementDD. Result has 158 states, 158 states have (on average 82.0) internal successors, (12956), 158 states have internal predecessors, (12956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:23:52,369 INFO L307 CegarLoopForPetriNet]: 73 programPoint places, 1213 predicate places. [2023-11-29 21:23:52,369 INFO L500 AbstractCegarLoop]: Abstraction has has 1286 places, 3602 transitions, 87019 flow [2023-11-29 21:23:52,370 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 46.86842105263158) internal successors, (1781), 38 states have internal predecessors, (1781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:23:52,370 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:23:52,370 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:23:52,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-29 21:23:52,575 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 21:23:52,575 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:23:52,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:23:52,575 INFO L85 PathProgramCache]: Analyzing trace with hash -315699918, now seen corresponding path program 7 times [2023-11-29 21:23:52,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:23:52,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660948743] [2023-11-29 21:23:52,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:23:52,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:23:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:23:53,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:23:53,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:23:53,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660948743] [2023-11-29 21:23:53,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660948743] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:23:53,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136476642] [2023-11-29 21:23:53,346 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 21:23:53,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:23:53,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:23:53,347 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:23:53,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 21:23:53,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:23:53,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 21:23:53,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:23:54,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:23:54,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:23:54,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:23:54,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136476642] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:23:54,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:23:54,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 17] total 38 [2023-11-29 21:23:54,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055434893] [2023-11-29 21:23:54,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:23:54,842 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-29 21:23:54,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:23:54,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-29 21:23:54,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1229, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 21:23:54,844 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 82 [2023-11-29 21:23:54,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1286 places, 3602 transitions, 87019 flow. Second operand has 38 states, 38 states have (on average 46.8421052631579) internal successors, (1780), 38 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:23:54,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:23:54,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 82 [2023-11-29 21:23:54,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:24:07,750 INFO L124 PetriNetUnfolderBase]: 2496/7706 cut-off events. [2023-11-29 21:24:07,750 INFO L125 PetriNetUnfolderBase]: For 77663/78818 co-relation queries the response was YES. [2023-11-29 21:24:07,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76959 conditions, 7706 events. 2496/7706 cut-off events. For 77663/78818 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 82138 event pairs, 47 based on Foata normal form. 265/7324 useless extension candidates. Maximal degree in co-relation 61656. Up to 3712 conditions per place. [2023-11-29 21:24:07,812 INFO L140 encePairwiseOnDemand]: 56/82 looper letters, 1701 selfloop transitions, 1538 changer transitions 1142/4416 dead transitions. [2023-11-29 21:24:07,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1417 places, 4416 transitions, 114718 flow [2023-11-29 21:24:07,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2023-11-29 21:24:07,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2023-11-29 21:24:07,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 6405 transitions. [2023-11-29 21:24:07,816 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5917405764966741 [2023-11-29 21:24:07,816 INFO L72 ComplementDD]: Start complementDD. Operand 132 states and 6405 transitions. [2023-11-29 21:24:07,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 132 states and 6405 transitions. [2023-11-29 21:24:07,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:24:07,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 132 states and 6405 transitions. [2023-11-29 21:24:07,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 133 states, 132 states have (on average 48.52272727272727) internal successors, (6405), 132 states have internal predecessors, (6405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:24:07,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 133 states, 133 states have (on average 82.0) internal successors, (10906), 133 states have internal predecessors, (10906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:24:07,830 INFO L81 ComplementDD]: Finished complementDD. Result has 133 states, 133 states have (on average 82.0) internal successors, (10906), 133 states have internal predecessors, (10906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:24:07,830 INFO L307 CegarLoopForPetriNet]: 73 programPoint places, 1344 predicate places. [2023-11-29 21:24:07,831 INFO L500 AbstractCegarLoop]: Abstraction has has 1417 places, 4416 transitions, 114718 flow [2023-11-29 21:24:07,831 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 46.8421052631579) internal successors, (1780), 38 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:24:07,831 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:24:07,831 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:24:07,850 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 21:24:08,035 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 21:24:08,036 INFO L425 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:24:08,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:24:08,036 INFO L85 PathProgramCache]: Analyzing trace with hash 406629856, now seen corresponding path program 8 times [2023-11-29 21:24:08,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:24:08,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820913456] [2023-11-29 21:24:08,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:24:08,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:24:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:24:08,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:24:08,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:24:08,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820913456] [2023-11-29 21:24:08,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820913456] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:24:08,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011587662] [2023-11-29 21:24:08,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 21:24:08,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:24:08,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:24:08,936 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:24:08,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 21:24:09,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 21:24:09,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:24:09,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 21:24:09,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:24:10,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:24:10,172 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:24:10,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:24:10,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011587662] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:24:10,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:24:10,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 17] total 38 [2023-11-29 21:24:10,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466682891] [2023-11-29 21:24:10,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:24:10,922 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-29 21:24:10,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:24:10,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-29 21:24:10,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1221, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 21:24:10,923 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 82 [2023-11-29 21:24:10,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1417 places, 4416 transitions, 114718 flow. Second operand has 38 states, 38 states have (on average 46.81578947368421) internal successors, (1779), 38 states have internal predecessors, (1779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:24:10,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:24:10,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 82 [2023-11-29 21:24:10,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:24:27,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:24:28,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:24:34,137 INFO L124 PetriNetUnfolderBase]: 2840/8730 cut-off events. [2023-11-29 21:24:34,137 INFO L125 PetriNetUnfolderBase]: For 98642/100162 co-relation queries the response was YES. [2023-11-29 21:24:34,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93854 conditions, 8730 events. 2840/8730 cut-off events. For 98642/100162 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 94962 event pairs, 38 based on Foata normal form. 398/8380 useless extension candidates. Maximal degree in co-relation 72878. Up to 4310 conditions per place. [2023-11-29 21:24:34,217 INFO L140 encePairwiseOnDemand]: 56/82 looper letters, 1910 selfloop transitions, 1870 changer transitions 1241/5056 dead transitions. [2023-11-29 21:24:34,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1599 places, 5056 transitions, 141278 flow [2023-11-29 21:24:34,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2023-11-29 21:24:34,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2023-11-29 21:24:34,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 8922 transitions. [2023-11-29 21:24:34,222 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.594562175129948 [2023-11-29 21:24:34,222 INFO L72 ComplementDD]: Start complementDD. Operand 183 states and 8922 transitions. [2023-11-29 21:24:34,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 183 states and 8922 transitions. [2023-11-29 21:24:34,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:24:34,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 183 states and 8922 transitions. [2023-11-29 21:24:34,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 184 states, 183 states have (on average 48.75409836065574) internal successors, (8922), 183 states have internal predecessors, (8922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:24:34,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 184 states, 184 states have (on average 82.0) internal successors, (15088), 184 states have internal predecessors, (15088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:24:34,266 INFO L81 ComplementDD]: Finished complementDD. Result has 184 states, 184 states have (on average 82.0) internal successors, (15088), 184 states have internal predecessors, (15088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:24:34,271 INFO L307 CegarLoopForPetriNet]: 73 programPoint places, 1526 predicate places. [2023-11-29 21:24:34,271 INFO L500 AbstractCegarLoop]: Abstraction has has 1599 places, 5056 transitions, 141278 flow [2023-11-29 21:24:34,272 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 46.81578947368421) internal successors, (1779), 38 states have internal predecessors, (1779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:24:34,272 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:24:34,272 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:24:34,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-29 21:24:34,476 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:24:34,476 INFO L425 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:24:34,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:24:34,477 INFO L85 PathProgramCache]: Analyzing trace with hash 622485086, now seen corresponding path program 9 times [2023-11-29 21:24:34,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:24:34,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476442388] [2023-11-29 21:24:34,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:24:34,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:24:34,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:24:35,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:24:35,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:24:35,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476442388] [2023-11-29 21:24:35,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476442388] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:24:35,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514357590] [2023-11-29 21:24:35,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 21:24:35,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:24:35,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:24:35,201 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:24:35,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 21:24:35,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 21:24:35,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:24:35,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 21:24:35,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:24:35,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:24:35,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:24:37,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:24:37,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514357590] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:24:37,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:24:37,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 17] total 38 [2023-11-29 21:24:37,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780872746] [2023-11-29 21:24:37,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:24:37,021 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-29 21:24:37,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:24:37,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-29 21:24:37,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1233, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 21:24:37,023 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 82 [2023-11-29 21:24:37,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1599 places, 5056 transitions, 141278 flow. Second operand has 38 states, 38 states have (on average 46.86842105263158) internal successors, (1781), 38 states have internal predecessors, (1781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:24:37,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:24:37,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 82 [2023-11-29 21:24:37,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:24:52,257 INFO L124 PetriNetUnfolderBase]: 2941/9154 cut-off events. [2023-11-29 21:24:52,258 INFO L125 PetriNetUnfolderBase]: For 114878/116575 co-relation queries the response was YES. [2023-11-29 21:24:52,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104961 conditions, 9154 events. 2941/9154 cut-off events. For 114878/116575 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 101279 event pairs, 40 based on Foata normal form. 385/8768 useless extension candidates. Maximal degree in co-relation 81990. Up to 4551 conditions per place. [2023-11-29 21:24:52,334 INFO L140 encePairwiseOnDemand]: 56/82 looper letters, 2140 selfloop transitions, 1825 changer transitions 1279/5279 dead transitions. [2023-11-29 21:24:52,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1728 places, 5279 transitions, 158181 flow [2023-11-29 21:24:52,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2023-11-29 21:24:52,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2023-11-29 21:24:52,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 6340 transitions. [2023-11-29 21:24:52,338 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5947467166979362 [2023-11-29 21:24:52,338 INFO L72 ComplementDD]: Start complementDD. Operand 130 states and 6340 transitions. [2023-11-29 21:24:52,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 130 states and 6340 transitions. [2023-11-29 21:24:52,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:24:52,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 130 states and 6340 transitions. [2023-11-29 21:24:52,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 131 states, 130 states have (on average 48.76923076923077) internal successors, (6340), 130 states have internal predecessors, (6340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:24:52,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 131 states, 131 states have (on average 82.0) internal successors, (10742), 131 states have internal predecessors, (10742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:24:52,349 INFO L81 ComplementDD]: Finished complementDD. Result has 131 states, 131 states have (on average 82.0) internal successors, (10742), 131 states have internal predecessors, (10742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:24:52,349 INFO L307 CegarLoopForPetriNet]: 73 programPoint places, 1655 predicate places. [2023-11-29 21:24:52,349 INFO L500 AbstractCegarLoop]: Abstraction has has 1728 places, 5279 transitions, 158181 flow [2023-11-29 21:24:52,349 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 46.86842105263158) internal successors, (1781), 38 states have internal predecessors, (1781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:24:52,349 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:24:52,349 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:24:52,356 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 21:24:52,553 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 21:24:52,554 INFO L425 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:24:52,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:24:52,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1757628100, now seen corresponding path program 10 times [2023-11-29 21:24:52,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:24:52,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961210881] [2023-11-29 21:24:52,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:24:52,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:24:52,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:24:53,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:24:53,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:24:53,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961210881] [2023-11-29 21:24:53,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961210881] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:24:53,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884403055] [2023-11-29 21:24:53,189 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 21:24:53,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:24:53,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:24:53,190 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:24:53,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 21:24:53,261 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 21:24:53,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:24:53,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 21:24:53,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:24:54,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:24:54,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:24:55,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:24:55,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884403055] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:24:55,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:24:55,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 17] total 38 [2023-11-29 21:24:55,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882954604] [2023-11-29 21:24:55,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:24:55,161 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-29 21:24:55,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:24:55,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-29 21:24:55,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1240, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 21:24:55,162 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 82 [2023-11-29 21:24:55,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1728 places, 5279 transitions, 158181 flow. Second operand has 38 states, 38 states have (on average 46.86842105263158) internal successors, (1781), 38 states have internal predecessors, (1781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:24:55,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:24:55,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 82 [2023-11-29 21:24:55,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:25:11,566 INFO L124 PetriNetUnfolderBase]: 3058/9552 cut-off events. [2023-11-29 21:25:11,566 INFO L125 PetriNetUnfolderBase]: For 133206/135154 co-relation queries the response was YES. [2023-11-29 21:25:11,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116530 conditions, 9552 events. 3058/9552 cut-off events. For 133206/135154 co-relation queries the response was YES. Maximal size of possible extension queue 663. Compared 106784 event pairs, 38 based on Foata normal form. 428/9187 useless extension candidates. Maximal degree in co-relation 81448. Up to 4764 conditions per place. [2023-11-29 21:25:11,660 INFO L140 encePairwiseOnDemand]: 56/82 looper letters, 2211 selfloop transitions, 1964 changer transitions 1308/5518 dead transitions. [2023-11-29 21:25:11,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1858 places, 5518 transitions, 176276 flow [2023-11-29 21:25:11,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2023-11-29 21:25:11,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2023-11-29 21:25:11,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 6367 transitions. [2023-11-29 21:25:11,664 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5927201638428597 [2023-11-29 21:25:11,664 INFO L72 ComplementDD]: Start complementDD. Operand 131 states and 6367 transitions. [2023-11-29 21:25:11,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 131 states and 6367 transitions. [2023-11-29 21:25:11,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:25:11,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 131 states and 6367 transitions. [2023-11-29 21:25:11,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 132 states, 131 states have (on average 48.603053435114504) internal successors, (6367), 131 states have internal predecessors, (6367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:25:11,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 132 states, 132 states have (on average 82.0) internal successors, (10824), 132 states have internal predecessors, (10824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:25:11,675 INFO L81 ComplementDD]: Finished complementDD. Result has 132 states, 132 states have (on average 82.0) internal successors, (10824), 132 states have internal predecessors, (10824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:25:11,675 INFO L307 CegarLoopForPetriNet]: 73 programPoint places, 1785 predicate places. [2023-11-29 21:25:11,675 INFO L500 AbstractCegarLoop]: Abstraction has has 1858 places, 5518 transitions, 176276 flow [2023-11-29 21:25:11,675 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 46.86842105263158) internal successors, (1781), 38 states have internal predecessors, (1781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:25:11,676 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:25:11,676 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:25:11,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 21:25:11,879 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 21:25:11,880 INFO L425 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:25:11,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:25:11,880 INFO L85 PathProgramCache]: Analyzing trace with hash -106141148, now seen corresponding path program 11 times [2023-11-29 21:25:11,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:25:11,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489772615] [2023-11-29 21:25:11,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:25:11,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:25:11,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:25:12,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:25:12,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:25:12,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489772615] [2023-11-29 21:25:12,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489772615] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:25:12,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883496926] [2023-11-29 21:25:12,649 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 21:25:12,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:25:12,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:25:12,650 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:25:12,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 21:25:12,726 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 21:25:12,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:25:12,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 21:25:12,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:25:13,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:25:13,435 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:25:14,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:25:14,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883496926] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:25:14,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:25:14,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2023-11-29 21:25:14,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322820321] [2023-11-29 21:25:14,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:25:14,384 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-29 21:25:14,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:25:14,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-29 21:25:14,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1309, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 21:25:14,386 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 82 [2023-11-29 21:25:14,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1858 places, 5518 transitions, 176276 flow. Second operand has 39 states, 39 states have (on average 46.82051282051282) internal successors, (1826), 39 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:25:14,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:25:14,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 82 [2023-11-29 21:25:14,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:25:38,245 INFO L124 PetriNetUnfolderBase]: 3229/10054 cut-off events. [2023-11-29 21:25:38,245 INFO L125 PetriNetUnfolderBase]: For 153821/156069 co-relation queries the response was YES. [2023-11-29 21:25:38,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130596 conditions, 10054 events. 3229/10054 cut-off events. For 153821/156069 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 113771 event pairs, 36 based on Foata normal form. 498/9724 useless extension candidates. Maximal degree in co-relation 103252. Up to 5061 conditions per place. [2023-11-29 21:25:38,342 INFO L140 encePairwiseOnDemand]: 55/82 looper letters, 1929 selfloop transitions, 2573 changer transitions 1367/5904 dead transitions. [2023-11-29 21:25:38,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2049 places, 5904 transitions, 200010 flow [2023-11-29 21:25:38,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2023-11-29 21:25:38,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2023-11-29 21:25:38,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 9274 transitions. [2023-11-29 21:25:38,347 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5890497967479674 [2023-11-29 21:25:38,348 INFO L72 ComplementDD]: Start complementDD. Operand 192 states and 9274 transitions. [2023-11-29 21:25:38,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 192 states and 9274 transitions. [2023-11-29 21:25:38,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:25:38,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 192 states and 9274 transitions. [2023-11-29 21:25:38,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 193 states, 192 states have (on average 48.302083333333336) internal successors, (9274), 192 states have internal predecessors, (9274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:25:38,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 193 states, 193 states have (on average 82.0) internal successors, (15826), 193 states have internal predecessors, (15826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:25:38,363 INFO L81 ComplementDD]: Finished complementDD. Result has 193 states, 193 states have (on average 82.0) internal successors, (15826), 193 states have internal predecessors, (15826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:25:38,364 INFO L307 CegarLoopForPetriNet]: 73 programPoint places, 1976 predicate places. [2023-11-29 21:25:38,364 INFO L500 AbstractCegarLoop]: Abstraction has has 2049 places, 5904 transitions, 200010 flow [2023-11-29 21:25:38,364 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 46.82051282051282) internal successors, (1826), 39 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:25:38,364 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:25:38,364 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:25:38,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-29 21:25:38,568 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 21:25:38,569 INFO L425 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:25:38,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:25:38,569 INFO L85 PathProgramCache]: Analyzing trace with hash 613331540, now seen corresponding path program 12 times [2023-11-29 21:25:38,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:25:38,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059787404] [2023-11-29 21:25:38,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:25:38,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:25:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:25:39,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:25:39,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:25:39,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059787404] [2023-11-29 21:25:39,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059787404] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:25:39,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39707745] [2023-11-29 21:25:39,580 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 21:25:39,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:25:39,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:25:39,581 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:25:39,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 21:25:39,676 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-29 21:25:39,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:25:39,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 21:25:39,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:25:40,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:25:40,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:25:41,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:25:41,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39707745] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:25:41,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:25:41,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 17] total 38 [2023-11-29 21:25:41,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127470209] [2023-11-29 21:25:41,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:25:41,115 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-29 21:25:41,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:25:41,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-29 21:25:41,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1231, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 21:25:41,117 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 82 [2023-11-29 21:25:41,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2049 places, 5904 transitions, 200010 flow. Second operand has 38 states, 38 states have (on average 46.8421052631579) internal successors, (1780), 38 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:25:41,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:25:41,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 82 [2023-11-29 21:25:41,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:25:55,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:26:09,988 INFO L124 PetriNetUnfolderBase]: 3505/10891 cut-off events. [2023-11-29 21:26:09,996 INFO L125 PetriNetUnfolderBase]: For 178852/181366 co-relation queries the response was YES. [2023-11-29 21:26:10,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149852 conditions, 10891 events. 3505/10891 cut-off events. For 178852/181366 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 124664 event pairs, 41 based on Foata normal form. 410/10387 useless extension candidates. Maximal degree in co-relation 106015. Up to 5586 conditions per place. [2023-11-29 21:26:10,106 INFO L140 encePairwiseOnDemand]: 56/82 looper letters, 2550 selfloop transitions, 2423 changer transitions 1488/6496 dead transitions. [2023-11-29 21:26:10,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2217 places, 6496 transitions, 232823 flow [2023-11-29 21:26:10,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2023-11-29 21:26:10,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2023-11-29 21:26:10,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 8253 transitions. [2023-11-29 21:26:10,129 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5955404820320392 [2023-11-29 21:26:10,129 INFO L72 ComplementDD]: Start complementDD. Operand 169 states and 8253 transitions. [2023-11-29 21:26:10,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 8253 transitions. [2023-11-29 21:26:10,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:26:10,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 169 states and 8253 transitions. [2023-11-29 21:26:10,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 170 states, 169 states have (on average 48.83431952662722) internal successors, (8253), 169 states have internal predecessors, (8253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:26:10,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 170 states, 170 states have (on average 82.0) internal successors, (13940), 170 states have internal predecessors, (13940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:26:10,145 INFO L81 ComplementDD]: Finished complementDD. Result has 170 states, 170 states have (on average 82.0) internal successors, (13940), 170 states have internal predecessors, (13940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:26:10,146 INFO L307 CegarLoopForPetriNet]: 73 programPoint places, 2144 predicate places. [2023-11-29 21:26:10,146 INFO L500 AbstractCegarLoop]: Abstraction has has 2217 places, 6496 transitions, 232823 flow [2023-11-29 21:26:10,146 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 46.8421052631579) internal successors, (1780), 38 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:26:10,146 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:26:10,146 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:26:10,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 21:26:10,350 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:26:10,350 INFO L425 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:26:10,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:26:10,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1867865910, now seen corresponding path program 13 times [2023-11-29 21:26:10,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:26:10,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345832439] [2023-11-29 21:26:10,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:26:10,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:26:10,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:26:11,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:26:11,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:26:11,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345832439] [2023-11-29 21:26:11,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345832439] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:26:11,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523839027] [2023-11-29 21:26:11,096 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 21:26:11,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:26:11,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:26:11,097 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:26:11,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 21:26:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:26:11,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 21:26:11,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:26:11,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:26:11,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:26:12,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:26:12,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523839027] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:26:12,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:26:12,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 17] total 38 [2023-11-29 21:26:12,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164154272] [2023-11-29 21:26:12,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:26:12,627 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-29 21:26:12,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:26:12,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-29 21:26:12,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1231, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 21:26:12,629 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 82 [2023-11-29 21:26:12,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2217 places, 6496 transitions, 232823 flow. Second operand has 38 states, 38 states have (on average 46.8421052631579) internal successors, (1780), 38 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:26:12,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:26:12,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 82 [2023-11-29 21:26:12,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:26:53,061 INFO L124 PetriNetUnfolderBase]: 3660/11478 cut-off events. [2023-11-29 21:26:53,061 INFO L125 PetriNetUnfolderBase]: For 204606/207321 co-relation queries the response was YES. [2023-11-29 21:26:53,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166335 conditions, 11478 events. 3660/11478 cut-off events. For 204606/207321 co-relation queries the response was YES. Maximal size of possible extension queue 821. Compared 133256 event pairs, 47 based on Foata normal form. 409/10929 useless extension candidates. Maximal degree in co-relation 117050. Up to 5912 conditions per place. [2023-11-29 21:26:53,172 INFO L140 encePairwiseOnDemand]: 56/82 looper letters, 2453 selfloop transitions, 2799 changer transitions 1562/6849 dead transitions. [2023-11-29 21:26:53,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2429 places, 6849 transitions, 259531 flow [2023-11-29 21:26:53,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2023-11-29 21:26:53,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2023-11-29 21:26:53,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 10363 transitions. [2023-11-29 21:26:53,178 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5933241726783465 [2023-11-29 21:26:53,178 INFO L72 ComplementDD]: Start complementDD. Operand 213 states and 10363 transitions. [2023-11-29 21:26:53,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 213 states and 10363 transitions. [2023-11-29 21:26:53,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:26:53,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 213 states and 10363 transitions. [2023-11-29 21:26:53,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 214 states, 213 states have (on average 48.652582159624416) internal successors, (10363), 213 states have internal predecessors, (10363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:26:53,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 214 states, 214 states have (on average 82.0) internal successors, (17548), 214 states have internal predecessors, (17548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:26:53,194 INFO L81 ComplementDD]: Finished complementDD. Result has 214 states, 214 states have (on average 82.0) internal successors, (17548), 214 states have internal predecessors, (17548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:26:53,194 INFO L307 CegarLoopForPetriNet]: 73 programPoint places, 2356 predicate places. [2023-11-29 21:26:53,194 INFO L500 AbstractCegarLoop]: Abstraction has has 2429 places, 6849 transitions, 259531 flow [2023-11-29 21:26:53,195 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 46.8421052631579) internal successors, (1780), 38 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:26:53,195 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:26:53,195 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:26:53,200 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 21:26:53,399 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:26:53,399 INFO L425 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:26:53,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:26:53,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1614391694, now seen corresponding path program 14 times [2023-11-29 21:26:53,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:26:53,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680019930] [2023-11-29 21:26:53,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:26:53,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:26:53,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:26:54,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:26:54,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:26:54,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680019930] [2023-11-29 21:26:54,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680019930] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:26:54,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650849013] [2023-11-29 21:26:54,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 21:26:54,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:26:54,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:26:54,097 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:26:54,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 21:26:54,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 21:26:54,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:26:54,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 21:26:54,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:26:54,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:26:54,819 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:26:55,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:26:55,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650849013] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:26:55,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:26:55,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 17] total 38 [2023-11-29 21:26:55,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947372241] [2023-11-29 21:26:55,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:26:55,612 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-29 21:26:55,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:26:55,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-29 21:26:55,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1237, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 21:26:55,613 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 82 [2023-11-29 21:26:55,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2429 places, 6849 transitions, 259531 flow. Second operand has 38 states, 38 states have (on average 46.8421052631579) internal successors, (1780), 38 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:26:55,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:26:55,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 82 [2023-11-29 21:26:55,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:27:06,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:27:09,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:27:18,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:27:25,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:27:37,805 INFO L124 PetriNetUnfolderBase]: 4105/12941 cut-off events. [2023-11-29 21:27:37,805 INFO L125 PetriNetUnfolderBase]: For 254119/257377 co-relation queries the response was YES. [2023-11-29 21:27:37,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197421 conditions, 12941 events. 4105/12941 cut-off events. For 254119/257377 co-relation queries the response was YES. Maximal size of possible extension queue 962. Compared 153763 event pairs, 40 based on Foata normal form. 410/12259 useless extension candidates. Maximal degree in co-relation 138796. Up to 6790 conditions per place. [2023-11-29 21:27:38,079 INFO L140 encePairwiseOnDemand]: 56/82 looper letters, 2825 selfloop transitions, 3168 changer transitions 1801/7829 dead transitions. [2023-11-29 21:27:38,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2638 places, 7829 transitions, 312840 flow [2023-11-29 21:27:38,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2023-11-29 21:27:38,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2023-11-29 21:27:38,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 10245 transitions. [2023-11-29 21:27:38,084 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5949477351916377 [2023-11-29 21:27:38,084 INFO L72 ComplementDD]: Start complementDD. Operand 210 states and 10245 transitions. [2023-11-29 21:27:38,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 210 states and 10245 transitions. [2023-11-29 21:27:38,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:27:38,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 210 states and 10245 transitions. [2023-11-29 21:27:38,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 211 states, 210 states have (on average 48.785714285714285) internal successors, (10245), 210 states have internal predecessors, (10245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:27:38,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 211 states, 211 states have (on average 82.0) internal successors, (17302), 211 states have internal predecessors, (17302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:27:38,100 INFO L81 ComplementDD]: Finished complementDD. Result has 211 states, 211 states have (on average 82.0) internal successors, (17302), 211 states have internal predecessors, (17302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:27:38,100 INFO L307 CegarLoopForPetriNet]: 73 programPoint places, 2565 predicate places. [2023-11-29 21:27:38,100 INFO L500 AbstractCegarLoop]: Abstraction has has 2638 places, 7829 transitions, 312840 flow [2023-11-29 21:27:38,100 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 46.8421052631579) internal successors, (1780), 38 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:27:38,100 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:27:38,100 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:27:38,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-29 21:27:38,304 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 21:27:38,304 INFO L425 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:27:38,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:27:38,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1377421050, now seen corresponding path program 15 times [2023-11-29 21:27:38,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:27:38,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360966640] [2023-11-29 21:27:38,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:27:38,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:27:38,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:27:39,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:27:39,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:27:39,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360966640] [2023-11-29 21:27:39,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360966640] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:27:39,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998366365] [2023-11-29 21:27:39,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 21:27:39,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:27:39,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:27:39,050 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:27:39,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 21:27:39,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 21:27:39,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:27:39,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 21:27:39,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:27:39,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:27:39,655 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:27:40,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:27:40,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998366365] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:27:40,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:27:40,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 17] total 38 [2023-11-29 21:27:40,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432990023] [2023-11-29 21:27:40,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:27:40,440 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-29 21:27:40,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:27:40,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-29 21:27:40,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 21:27:40,452 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 82 [2023-11-29 21:27:40,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2638 places, 7829 transitions, 312840 flow. Second operand has 38 states, 38 states have (on average 46.8421052631579) internal successors, (1780), 38 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:27:40,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:27:40,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 82 [2023-11-29 21:27:40,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:27:50,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:28:04,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:28:09,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:28:13,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:28:30,051 INFO L124 PetriNetUnfolderBase]: 4221/13738 cut-off events. [2023-11-29 21:28:30,051 INFO L125 PetriNetUnfolderBase]: For 307434/311062 co-relation queries the response was YES. [2023-11-29 21:28:30,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217989 conditions, 13738 events. 4221/13738 cut-off events. For 307434/311062 co-relation queries the response was YES. Maximal size of possible extension queue 1031. Compared 166871 event pairs, 48 based on Foata normal form. 494/13096 useless extension candidates. Maximal degree in co-relation 150361. Up to 7166 conditions per place. [2023-11-29 21:28:30,204 INFO L140 encePairwiseOnDemand]: 56/82 looper letters, 2688 selfloop transitions, 3476 changer transitions 2051/8250 dead transitions. [2023-11-29 21:28:30,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2856 places, 8250 transitions, 346747 flow [2023-11-29 21:28:30,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2023-11-29 21:28:30,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2023-11-29 21:28:30,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 10653 transitions. [2023-11-29 21:28:30,209 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5932175075175409 [2023-11-29 21:28:30,209 INFO L72 ComplementDD]: Start complementDD. Operand 219 states and 10653 transitions. [2023-11-29 21:28:30,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 219 states and 10653 transitions. [2023-11-29 21:28:30,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:28:30,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 219 states and 10653 transitions. [2023-11-29 21:28:30,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 220 states, 219 states have (on average 48.64383561643836) internal successors, (10653), 219 states have internal predecessors, (10653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:28:30,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 220 states, 220 states have (on average 82.0) internal successors, (18040), 220 states have internal predecessors, (18040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:28:30,227 INFO L81 ComplementDD]: Finished complementDD. Result has 220 states, 220 states have (on average 82.0) internal successors, (18040), 220 states have internal predecessors, (18040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:28:30,228 INFO L307 CegarLoopForPetriNet]: 73 programPoint places, 2783 predicate places. [2023-11-29 21:28:30,228 INFO L500 AbstractCegarLoop]: Abstraction has has 2856 places, 8250 transitions, 346747 flow [2023-11-29 21:28:30,228 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 46.8421052631579) internal successors, (1780), 38 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:28:30,228 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:28:30,228 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:28:30,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-29 21:28:30,432 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 21:28:30,432 INFO L425 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:28:30,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:28:30,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1854026240, now seen corresponding path program 16 times [2023-11-29 21:28:30,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:28:30,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254694598] [2023-11-29 21:28:30,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:28:30,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:28:30,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:28:31,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:28:31,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:28:31,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254694598] [2023-11-29 21:28:31,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254694598] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:28:31,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739373553] [2023-11-29 21:28:31,306 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 21:28:31,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:28:31,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:28:31,316 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:28:31,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 21:28:31,437 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 21:28:31,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:28:31,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 21:28:31,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:28:32,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:28:32,125 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:28:32,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:28:32,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739373553] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:28:32,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:28:32,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 17] total 38 [2023-11-29 21:28:32,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118379630] [2023-11-29 21:28:32,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:28:32,842 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-29 21:28:32,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:28:32,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-29 21:28:32,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1233, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 21:28:32,844 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 82 [2023-11-29 21:28:32,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2856 places, 8250 transitions, 346747 flow. Second operand has 38 states, 38 states have (on average 46.86842105263158) internal successors, (1781), 38 states have internal predecessors, (1781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:28:32,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:28:32,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 82 [2023-11-29 21:28:32,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:29:03,531 INFO L124 PetriNetUnfolderBase]: 4259/13942 cut-off events. [2023-11-29 21:29:03,531 INFO L125 PetriNetUnfolderBase]: For 335863/339487 co-relation queries the response was YES. [2023-11-29 21:29:03,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231241 conditions, 13942 events. 4259/13942 cut-off events. For 335863/339487 co-relation queries the response was YES. Maximal size of possible extension queue 1044. Compared 170421 event pairs, 41 based on Foata normal form. 443/13239 useless extension candidates. Maximal degree in co-relation 189479. Up to 7266 conditions per place. [2023-11-29 21:29:03,687 INFO L140 encePairwiseOnDemand]: 56/82 looper letters, 3367 selfloop transitions, 2871 changer transitions 2077/8350 dead transitions. [2023-11-29 21:29:03,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2986 places, 8350 transitions, 367663 flow [2023-11-29 21:29:03,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2023-11-29 21:29:03,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2023-11-29 21:29:03,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 6378 transitions. [2023-11-29 21:29:03,690 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5937441817166264 [2023-11-29 21:29:03,690 INFO L72 ComplementDD]: Start complementDD. Operand 131 states and 6378 transitions. [2023-11-29 21:29:03,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 131 states and 6378 transitions. [2023-11-29 21:29:03,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:29:03,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 131 states and 6378 transitions. [2023-11-29 21:29:03,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 132 states, 131 states have (on average 48.68702290076336) internal successors, (6378), 131 states have internal predecessors, (6378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:29:03,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 132 states, 132 states have (on average 82.0) internal successors, (10824), 132 states have internal predecessors, (10824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:29:03,707 INFO L81 ComplementDD]: Finished complementDD. Result has 132 states, 132 states have (on average 82.0) internal successors, (10824), 132 states have internal predecessors, (10824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:29:03,708 INFO L307 CegarLoopForPetriNet]: 73 programPoint places, 2913 predicate places. [2023-11-29 21:29:03,708 INFO L500 AbstractCegarLoop]: Abstraction has has 2986 places, 8350 transitions, 367663 flow [2023-11-29 21:29:03,708 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 46.86842105263158) internal successors, (1781), 38 states have internal predecessors, (1781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:29:03,708 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:29:03,708 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:29:03,712 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 21:29:03,912 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:29:03,912 INFO L425 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:29:03,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:29:03,912 INFO L85 PathProgramCache]: Analyzing trace with hash 747500194, now seen corresponding path program 17 times [2023-11-29 21:29:03,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:29:03,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846485858] [2023-11-29 21:29:03,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:29:03,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:29:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:29:04,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:29:04,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:29:04,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846485858] [2023-11-29 21:29:04,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846485858] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:29:04,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853908] [2023-11-29 21:29:04,754 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 21:29:04,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:29:04,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:29:04,755 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:29:04,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 21:29:04,826 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-29 21:29:04,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:29:04,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 21:29:04,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:29:05,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:29:05,322 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:29:06,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:29:06,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853908] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:29:06,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:29:06,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 17] total 39 [2023-11-29 21:29:06,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746655492] [2023-11-29 21:29:06,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:29:06,096 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-29 21:29:06,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:29:06,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-29 21:29:06,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1296, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 21:29:06,098 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 82 [2023-11-29 21:29:06,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2986 places, 8350 transitions, 367663 flow. Second operand has 39 states, 39 states have (on average 46.82051282051282) internal successors, (1826), 39 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:29:06,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:29:06,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 82 [2023-11-29 21:29:06,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:29:43,937 INFO L124 PetriNetUnfolderBase]: 4524/14725 cut-off events. [2023-11-29 21:29:43,937 INFO L125 PetriNetUnfolderBase]: For 377835/381654 co-relation queries the response was YES. [2023-11-29 21:29:43,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255786 conditions, 14725 events. 4524/14725 cut-off events. For 377835/381654 co-relation queries the response was YES. Maximal size of possible extension queue 1098. Compared 180942 event pairs, 45 based on Foata normal form. 353/13860 useless extension candidates. Maximal degree in co-relation 177358. Up to 7750 conditions per place. [2023-11-29 21:29:44,138 INFO L140 encePairwiseOnDemand]: 56/82 looper letters, 3332 selfloop transitions, 3287 changer transitions 2242/8896 dead transitions. [2023-11-29 21:29:44,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3134 places, 8896 transitions, 409201 flow [2023-11-29 21:29:44,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2023-11-29 21:29:44,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2023-11-29 21:29:44,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 7291 transitions. [2023-11-29 21:29:44,142 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5967425110492716 [2023-11-29 21:29:44,142 INFO L72 ComplementDD]: Start complementDD. Operand 149 states and 7291 transitions. [2023-11-29 21:29:44,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 149 states and 7291 transitions. [2023-11-29 21:29:44,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:29:44,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 149 states and 7291 transitions. [2023-11-29 21:29:44,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 150 states, 149 states have (on average 48.93288590604027) internal successors, (7291), 149 states have internal predecessors, (7291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:29:44,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 150 states, 150 states have (on average 82.0) internal successors, (12300), 150 states have internal predecessors, (12300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:29:44,153 INFO L81 ComplementDD]: Finished complementDD. Result has 150 states, 150 states have (on average 82.0) internal successors, (12300), 150 states have internal predecessors, (12300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:29:44,154 INFO L307 CegarLoopForPetriNet]: 73 programPoint places, 3061 predicate places. [2023-11-29 21:29:44,154 INFO L500 AbstractCegarLoop]: Abstraction has has 3134 places, 8896 transitions, 409201 flow [2023-11-29 21:29:44,154 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 46.82051282051282) internal successors, (1826), 39 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:29:44,154 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:29:44,154 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:29:44,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-29 21:29:44,359 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:29:44,365 INFO L425 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:29:44,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:29:44,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1789349982, now seen corresponding path program 18 times [2023-11-29 21:29:44,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:29:44,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797635404] [2023-11-29 21:29:44,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:29:44,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:29:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:29:44,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:29:44,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:29:44,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797635404] [2023-11-29 21:29:44,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797635404] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:29:44,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851266801] [2023-11-29 21:29:44,990 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 21:29:44,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:29:44,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:29:44,991 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:29:44,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 21:29:45,067 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-29 21:29:45,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:29:45,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 21:29:45,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:29:45,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:29:45,602 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:29:46,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:29:46,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851266801] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:29:46,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:29:46,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 17] total 39 [2023-11-29 21:29:46,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116910988] [2023-11-29 21:29:46,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:29:46,371 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-29 21:29:46,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:29:46,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-29 21:29:46,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1304, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 21:29:46,373 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 82 [2023-11-29 21:29:46,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3134 places, 8896 transitions, 409201 flow. Second operand has 39 states, 39 states have (on average 46.82051282051282) internal successors, (1826), 39 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:29:46,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:29:46,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 82 [2023-11-29 21:29:46,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:30:23,895 INFO L124 PetriNetUnfolderBase]: 4754/15282 cut-off events. [2023-11-29 21:30:23,896 INFO L125 PetriNetUnfolderBase]: For 415529/419816 co-relation queries the response was YES. [2023-11-29 21:30:23,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277789 conditions, 15282 events. 4754/15282 cut-off events. For 415529/419816 co-relation queries the response was YES. Maximal size of possible extension queue 1141. Compared 188088 event pairs, 31 based on Foata normal form. 398/14412 useless extension candidates. Maximal degree in co-relation 195266. Up to 8110 conditions per place. [2023-11-29 21:30:24,086 INFO L140 encePairwiseOnDemand]: 56/82 looper letters, 3459 selfloop transitions, 3538 changer transitions 2299/9331 dead transitions. [2023-11-29 21:30:24,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3278 places, 9331 transitions, 447203 flow [2023-11-29 21:30:24,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2023-11-29 21:30:24,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2023-11-29 21:30:24,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 7042 transitions. [2023-11-29 21:30:24,090 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5922624053826745 [2023-11-29 21:30:24,090 INFO L72 ComplementDD]: Start complementDD. Operand 145 states and 7042 transitions. [2023-11-29 21:30:24,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 145 states and 7042 transitions. [2023-11-29 21:30:24,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:30:24,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 145 states and 7042 transitions. [2023-11-29 21:30:24,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 146 states, 145 states have (on average 48.56551724137931) internal successors, (7042), 145 states have internal predecessors, (7042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:30:24,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 146 states, 146 states have (on average 82.0) internal successors, (11972), 146 states have internal predecessors, (11972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:30:24,101 INFO L81 ComplementDD]: Finished complementDD. Result has 146 states, 146 states have (on average 82.0) internal successors, (11972), 146 states have internal predecessors, (11972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:30:24,102 INFO L307 CegarLoopForPetriNet]: 73 programPoint places, 3205 predicate places. [2023-11-29 21:30:24,102 INFO L500 AbstractCegarLoop]: Abstraction has has 3278 places, 9331 transitions, 447203 flow [2023-11-29 21:30:24,103 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 46.82051282051282) internal successors, (1826), 39 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:30:24,103 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:30:24,103 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:30:24,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-29 21:30:24,308 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 21:30:24,309 INFO L425 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:30:24,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:30:24,309 INFO L85 PathProgramCache]: Analyzing trace with hash -421811650, now seen corresponding path program 19 times [2023-11-29 21:30:24,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:30:24,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738862842] [2023-11-29 21:30:24,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:30:24,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:30:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:30:24,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:30:24,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:30:24,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738862842] [2023-11-29 21:30:24,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738862842] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:30:24,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154166175] [2023-11-29 21:30:24,930 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 21:30:24,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:30:24,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:30:24,932 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:30:24,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 21:30:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:30:25,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 21:30:25,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:30:25,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:30:25,476 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:30:26,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:30:26,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154166175] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:30:26,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:30:26,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 17] total 39 [2023-11-29 21:30:26,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080151377] [2023-11-29 21:30:26,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:30:26,242 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-29 21:30:26,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:30:26,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-29 21:30:26,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1296, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 21:30:26,244 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 82 [2023-11-29 21:30:26,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3278 places, 9331 transitions, 447203 flow. Second operand has 39 states, 39 states have (on average 46.84615384615385) internal successors, (1827), 39 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:30:26,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:30:26,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 82 [2023-11-29 21:30:26,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:31:04,495 INFO L124 PetriNetUnfolderBase]: 4827/15641 cut-off events. [2023-11-29 21:31:04,496 INFO L125 PetriNetUnfolderBase]: For 465879/470375 co-relation queries the response was YES. [2023-11-29 21:31:04,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295259 conditions, 15641 events. 4827/15641 cut-off events. For 465879/470375 co-relation queries the response was YES. Maximal size of possible extension queue 1173. Compared 194124 event pairs, 39 based on Foata normal form. 369/14729 useless extension candidates. Maximal degree in co-relation 206499. Up to 8307 conditions per place. [2023-11-29 21:31:04,697 INFO L140 encePairwiseOnDemand]: 56/82 looper letters, 3786 selfloop transitions, 3331 changer transitions 2363/9515 dead transitions. [2023-11-29 21:31:04,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3371 places, 9515 transitions, 475282 flow [2023-11-29 21:31:04,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-11-29 21:31:04,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2023-11-29 21:31:04,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 4621 transitions. [2023-11-29 21:31:04,700 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5995070057083549 [2023-11-29 21:31:04,700 INFO L72 ComplementDD]: Start complementDD. Operand 94 states and 4621 transitions. [2023-11-29 21:31:04,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 94 states and 4621 transitions. [2023-11-29 21:31:04,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:31:04,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 94 states and 4621 transitions. [2023-11-29 21:31:04,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 95 states, 94 states have (on average 49.159574468085104) internal successors, (4621), 94 states have internal predecessors, (4621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:31:04,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 95 states, 95 states have (on average 82.0) internal successors, (7790), 95 states have internal predecessors, (7790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:31:04,708 INFO L81 ComplementDD]: Finished complementDD. Result has 95 states, 95 states have (on average 82.0) internal successors, (7790), 95 states have internal predecessors, (7790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:31:04,708 INFO L307 CegarLoopForPetriNet]: 73 programPoint places, 3298 predicate places. [2023-11-29 21:31:04,708 INFO L500 AbstractCegarLoop]: Abstraction has has 3371 places, 9515 transitions, 475282 flow [2023-11-29 21:31:04,709 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 46.84615384615385) internal successors, (1827), 39 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:31:04,709 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:31:04,709 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:31:04,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 21:31:04,913 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 21:31:04,913 INFO L425 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:31:04,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:31:04,914 INFO L85 PathProgramCache]: Analyzing trace with hash -959782328, now seen corresponding path program 20 times [2023-11-29 21:31:04,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:31:04,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088671443] [2023-11-29 21:31:04,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:31:04,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:31:04,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:31:05,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:31:05,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:31:05,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088671443] [2023-11-29 21:31:05,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088671443] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:31:05,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749277892] [2023-11-29 21:31:05,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 21:31:05,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:31:05,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:31:05,502 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:31:05,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 21:31:05,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 21:31:05,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:31:05,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 21:31:05,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:31:06,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:31:06,162 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:31:06,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:31:06,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749277892] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:31:06,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:31:06,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 17] total 39 [2023-11-29 21:31:06,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470247944] [2023-11-29 21:31:06,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:31:06,948 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-29 21:31:06,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:31:06,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-29 21:31:06,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1302, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 21:31:06,950 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 82 [2023-11-29 21:31:06,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3371 places, 9515 transitions, 475282 flow. Second operand has 39 states, 39 states have (on average 46.82051282051282) internal successors, (1826), 39 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:31:06,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:31:06,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 82 [2023-11-29 21:31:06,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:31:51,085 INFO L124 PetriNetUnfolderBase]: 5043/16144 cut-off events. [2023-11-29 21:31:51,085 INFO L125 PetriNetUnfolderBase]: For 498301/503158 co-relation queries the response was YES. [2023-11-29 21:31:51,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318097 conditions, 16144 events. 5043/16144 cut-off events. For 498301/503158 co-relation queries the response was YES. Maximal size of possible extension queue 1223. Compared 200382 event pairs, 40 based on Foata normal form. 313/15121 useless extension candidates. Maximal degree in co-relation 268564. Up to 8643 conditions per place. [2023-11-29 21:31:51,315 INFO L140 encePairwiseOnDemand]: 56/82 looper letters, 3736 selfloop transitions, 3747 changer transitions 2416/9934 dead transitions. [2023-11-29 21:31:51,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3497 places, 9934 transitions, 515229 flow [2023-11-29 21:31:51,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-11-29 21:31:51,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2023-11-29 21:31:51,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 6177 transitions. [2023-11-29 21:31:51,318 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5931438448242751 [2023-11-29 21:31:51,318 INFO L72 ComplementDD]: Start complementDD. Operand 127 states and 6177 transitions. [2023-11-29 21:31:51,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 127 states and 6177 transitions. [2023-11-29 21:31:51,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:31:51,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 127 states and 6177 transitions. [2023-11-29 21:31:51,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 128 states, 127 states have (on average 48.63779527559055) internal successors, (6177), 127 states have internal predecessors, (6177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:31:51,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 128 states, 128 states have (on average 82.0) internal successors, (10496), 128 states have internal predecessors, (10496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:31:51,328 INFO L81 ComplementDD]: Finished complementDD. Result has 128 states, 128 states have (on average 82.0) internal successors, (10496), 128 states have internal predecessors, (10496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:31:51,328 INFO L307 CegarLoopForPetriNet]: 73 programPoint places, 3424 predicate places. [2023-11-29 21:31:51,328 INFO L500 AbstractCegarLoop]: Abstraction has has 3497 places, 9934 transitions, 515229 flow [2023-11-29 21:31:51,329 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 46.82051282051282) internal successors, (1826), 39 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:31:51,329 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:31:51,329 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:31:51,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-29 21:31:51,533 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 21:31:51,533 INFO L425 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:31:51,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:31:51,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1860985800, now seen corresponding path program 21 times [2023-11-29 21:31:51,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:31:51,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043554148] [2023-11-29 21:31:51,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:31:51,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:31:51,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:31:52,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:31:52,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:31:52,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043554148] [2023-11-29 21:31:52,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043554148] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:31:52,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405303658] [2023-11-29 21:31:52,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 21:31:52,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:31:52,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:31:52,255 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:31:52,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 21:31:52,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 21:31:52,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:31:52,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 21:31:52,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:31:52,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:31:52,742 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:31:53,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:31:53,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405303658] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:31:53,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:31:53,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 17] total 39 [2023-11-29 21:31:53,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623749538] [2023-11-29 21:31:53,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:31:53,431 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-29 21:31:53,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:31:53,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-29 21:31:53,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1292, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 21:31:53,432 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 82 [2023-11-29 21:31:53,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3497 places, 9934 transitions, 515229 flow. Second operand has 39 states, 39 states have (on average 46.82051282051282) internal successors, (1826), 39 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:31:53,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:31:53,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 82 [2023-11-29 21:31:53,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:32:43,353 INFO L124 PetriNetUnfolderBase]: 5334/16860 cut-off events. [2023-11-29 21:32:43,353 INFO L125 PetriNetUnfolderBase]: For 541154/546568 co-relation queries the response was YES. [2023-11-29 21:32:43,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346367 conditions, 16860 events. 5334/16860 cut-off events. For 541154/546568 co-relation queries the response was YES. Maximal size of possible extension queue 1264. Compared 209046 event pairs, 44 based on Foata normal form. 312/15761 useless extension candidates. Maximal degree in co-relation 281990. Up to 9005 conditions per place. [2023-11-29 21:32:43,599 INFO L140 encePairwiseOnDemand]: 56/82 looper letters, 3697 selfloop transitions, 4261 changer transitions 2502/10495 dead transitions. [2023-11-29 21:32:43,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3635 places, 10495 transitions, 564591 flow [2023-11-29 21:32:43,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2023-11-29 21:32:43,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2023-11-29 21:32:43,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 6769 transitions. [2023-11-29 21:32:43,603 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5938761186173013 [2023-11-29 21:32:43,603 INFO L72 ComplementDD]: Start complementDD. Operand 139 states and 6769 transitions. [2023-11-29 21:32:43,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 139 states and 6769 transitions. [2023-11-29 21:32:43,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:32:43,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 139 states and 6769 transitions. [2023-11-29 21:32:43,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 140 states, 139 states have (on average 48.697841726618705) internal successors, (6769), 139 states have internal predecessors, (6769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:32:43,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 140 states, 140 states have (on average 82.0) internal successors, (11480), 140 states have internal predecessors, (11480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:32:43,748 INFO L81 ComplementDD]: Finished complementDD. Result has 140 states, 140 states have (on average 82.0) internal successors, (11480), 140 states have internal predecessors, (11480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:32:43,749 INFO L307 CegarLoopForPetriNet]: 73 programPoint places, 3562 predicate places. [2023-11-29 21:32:43,749 INFO L500 AbstractCegarLoop]: Abstraction has has 3635 places, 10495 transitions, 564591 flow [2023-11-29 21:32:43,749 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 46.82051282051282) internal successors, (1826), 39 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:32:43,749 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:32:43,749 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:32:43,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-29 21:32:43,950 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 21:32:43,950 INFO L425 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:32:43,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:32:43,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1912342480, now seen corresponding path program 22 times [2023-11-29 21:32:43,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:32:43,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532552647] [2023-11-29 21:32:43,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:32:43,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:32:43,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:32:44,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:32:44,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:32:44,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532552647] [2023-11-29 21:32:44,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532552647] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:32:44,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383652024] [2023-11-29 21:32:44,627 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 21:32:44,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:32:44,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:32:44,628 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:32:44,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 21:32:44,699 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 21:32:44,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:32:44,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 21:32:44,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:32:45,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:32:45,163 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:32:45,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:32:45,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383652024] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:32:45,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:32:45,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 17] total 39 [2023-11-29 21:32:45,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965966582] [2023-11-29 21:32:45,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:32:45,993 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-29 21:32:45,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:32:45,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-29 21:32:45,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1294, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 21:32:45,994 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 82 [2023-11-29 21:32:45,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3635 places, 10495 transitions, 564591 flow. Second operand has 39 states, 39 states have (on average 46.84615384615385) internal successors, (1827), 39 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:32:45,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:32:45,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 82 [2023-11-29 21:32:45,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:33:39,163 INFO L124 PetriNetUnfolderBase]: 5452/17258 cut-off events. [2023-11-29 21:33:39,163 INFO L125 PetriNetUnfolderBase]: For 592875/599154 co-relation queries the response was YES. [2023-11-29 21:33:39,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 366913 conditions, 17258 events. 5452/17258 cut-off events. For 592875/599154 co-relation queries the response was YES. Maximal size of possible extension queue 1298. Compared 215219 event pairs, 52 based on Foata normal form. 341/16167 useless extension candidates. Maximal degree in co-relation 299700. Up to 9221 conditions per place. [2023-11-29 21:33:39,414 INFO L140 encePairwiseOnDemand]: 56/82 looper letters, 4054 selfloop transitions, 4066 changer transitions 2541/10696 dead transitions. [2023-11-29 21:33:39,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3759 places, 10696 transitions, 596642 flow [2023-11-29 21:33:39,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2023-11-29 21:33:39,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2023-11-29 21:33:39,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 6110 transitions. [2023-11-29 21:33:39,418 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5960975609756097 [2023-11-29 21:33:39,418 INFO L72 ComplementDD]: Start complementDD. Operand 125 states and 6110 transitions. [2023-11-29 21:33:39,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 125 states and 6110 transitions. [2023-11-29 21:33:39,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:33:39,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 125 states and 6110 transitions. [2023-11-29 21:33:39,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 126 states, 125 states have (on average 48.88) internal successors, (6110), 125 states have internal predecessors, (6110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:33:39,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 126 states, 126 states have (on average 82.0) internal successors, (10332), 126 states have internal predecessors, (10332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:33:39,427 INFO L81 ComplementDD]: Finished complementDD. Result has 126 states, 126 states have (on average 82.0) internal successors, (10332), 126 states have internal predecessors, (10332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:33:39,427 INFO L307 CegarLoopForPetriNet]: 73 programPoint places, 3686 predicate places. [2023-11-29 21:33:39,427 INFO L500 AbstractCegarLoop]: Abstraction has has 3759 places, 10696 transitions, 596642 flow [2023-11-29 21:33:39,428 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 46.84615384615385) internal successors, (1827), 39 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:33:39,428 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:33:39,428 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:33:39,432 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-29 21:33:39,631 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 21:33:39,632 INFO L425 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:33:39,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:33:39,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1768107728, now seen corresponding path program 23 times [2023-11-29 21:33:39,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:33:39,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869140702] [2023-11-29 21:33:39,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:33:39,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:33:39,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:33:40,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:33:40,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:33:40,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869140702] [2023-11-29 21:33:40,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869140702] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:33:40,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198892907] [2023-11-29 21:33:40,225 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 21:33:40,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:33:40,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:33:40,226 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:33:40,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 21:33:40,307 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 21:33:40,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:33:40,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 21:33:40,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:33:40,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:33:40,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:33:41,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:33:41,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198892907] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:33:41,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:33:41,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 17] total 39 [2023-11-29 21:33:41,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207953326] [2023-11-29 21:33:41,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:33:41,645 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-29 21:33:41,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:33:41,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-29 21:33:41,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1291, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 21:33:41,646 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 82 [2023-11-29 21:33:41,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3759 places, 10696 transitions, 596642 flow. Second operand has 39 states, 39 states have (on average 46.84615384615385) internal successors, (1827), 39 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:33:41,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:33:41,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 82 [2023-11-29 21:33:41,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:34:46,246 INFO L124 PetriNetUnfolderBase]: 5765/18175 cut-off events. [2023-11-29 21:34:46,246 INFO L125 PetriNetUnfolderBase]: For 679857/686929 co-relation queries the response was YES. [2023-11-29 21:34:46,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400422 conditions, 18175 events. 5765/18175 cut-off events. For 679857/686929 co-relation queries the response was YES. Maximal size of possible extension queue 1388. Compared 228334 event pairs, 43 based on Foata normal form. 436/17082 useless extension candidates. Maximal degree in co-relation 287282. Up to 9770 conditions per place. [2023-11-29 21:34:46,545 INFO L140 encePairwiseOnDemand]: 56/82 looper letters, 4339 selfloop transitions, 4249 changer transitions 2651/11274 dead transitions. [2023-11-29 21:34:46,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3922 places, 11274 transitions, 651405 flow [2023-11-29 21:34:46,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2023-11-29 21:34:46,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2023-11-29 21:34:46,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 8019 transitions. [2023-11-29 21:34:46,549 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5962968471148126 [2023-11-29 21:34:46,549 INFO L72 ComplementDD]: Start complementDD. Operand 164 states and 8019 transitions. [2023-11-29 21:34:46,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 164 states and 8019 transitions. [2023-11-29 21:34:46,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:34:46,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 164 states and 8019 transitions. [2023-11-29 21:34:46,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 165 states, 164 states have (on average 48.896341463414636) internal successors, (8019), 164 states have internal predecessors, (8019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:34:46,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 165 states, 165 states have (on average 82.0) internal successors, (13530), 165 states have internal predecessors, (13530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:34:46,564 INFO L81 ComplementDD]: Finished complementDD. Result has 165 states, 165 states have (on average 82.0) internal successors, (13530), 165 states have internal predecessors, (13530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:34:46,564 INFO L307 CegarLoopForPetriNet]: 73 programPoint places, 3849 predicate places. [2023-11-29 21:34:46,564 INFO L500 AbstractCegarLoop]: Abstraction has has 3922 places, 11274 transitions, 651405 flow [2023-11-29 21:34:46,565 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 46.84615384615385) internal successors, (1827), 39 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:34:46,565 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:34:46,565 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 21:34:46,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-29 21:34:46,769 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:34:46,769 INFO L425 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:34:46,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:34:46,770 INFO L85 PathProgramCache]: Analyzing trace with hash 750393912, now seen corresponding path program 24 times [2023-11-29 21:34:46,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:34:46,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961958650] [2023-11-29 21:34:46,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:34:46,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:34:46,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:34:47,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:34:47,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:34:47,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961958650] [2023-11-29 21:34:47,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961958650] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:34:47,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458632148] [2023-11-29 21:34:47,568 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 21:34:47,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:34:47,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:34:47,569 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:34:47,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-29 21:34:47,657 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-29 21:34:47,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:34:47,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 21:34:47,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:34:48,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:34:48,160 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:34:48,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:34:48,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458632148] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:34:48,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:34:48,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 17] total 39 [2023-11-29 21:34:48,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094998693] [2023-11-29 21:34:48,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:34:48,978 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-29 21:34:48,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:34:48,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-29 21:34:48,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1290, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 21:34:48,980 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 82 [2023-11-29 21:34:48,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3922 places, 11274 transitions, 651405 flow. Second operand has 39 states, 39 states have (on average 46.84615384615385) internal successors, (1827), 39 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:34:48,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:34:48,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 82 [2023-11-29 21:34:48,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-11-29 21:35:17,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2023-11-29 21:35:17,871 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-29 21:35:17,874 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-29 21:35:17,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-11-29 21:35:17,887 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-29 21:35:18,075 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-29 21:35:18,075 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (39states, 45/82 universal loopers) in iteration 31,while PetriNetUnfolder was constructing finite prefix that currently has 151274 conditions, 5926 events (2224/5925 cut-off events. For 167603/171049 co-relation queries the response was YES. Maximal size of possible extension queue 1148. Compared 67592 event pairs, 12 based on Foata normal form. 122/6383 useless extension candidates. Maximal degree in co-relation 148254. Up to 3199 conditions per place.). [2023-11-29 21:35:18,076 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-29 21:35:18,076 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-29 21:35:18,077 INFO L457 BasicCegarLoop]: Path program histogram: [24, 3, 3, 1] [2023-11-29 21:35:18,079 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 21:35:18,079 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 21:35:18,081 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 09:35:18 BasicIcfg [2023-11-29 21:35:18,081 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 21:35:18,081 INFO L158 Benchmark]: Toolchain (without parser) took 845727.27ms. Allocated memory was 394.3MB in the beginning and 3.3GB in the end (delta: 2.9GB). Free memory was 342.9MB in the beginning and 319.1MB in the end (delta: 23.8MB). Peak memory consumption was 3.0GB. Max. memory is 16.0GB. [2023-11-29 21:35:18,081 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 394.3MB. Free memory was 347.9MB in the beginning and 347.8MB in the end (delta: 55.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-11-29 21:35:18,082 INFO L158 Benchmark]: CACSL2BoogieTranslator took 201.76ms. Allocated memory is still 394.3MB. Free memory was 342.9MB in the beginning and 331.7MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-11-29 21:35:18,082 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.45ms. Allocated memory is still 394.3MB. Free memory was 331.7MB in the beginning and 330.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 21:35:18,082 INFO L158 Benchmark]: Boogie Preprocessor took 27.93ms. Allocated memory is still 394.3MB. Free memory was 330.3MB in the beginning and 329.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 21:35:18,082 INFO L158 Benchmark]: RCFGBuilder took 234.92ms. Allocated memory is still 394.3MB. Free memory was 329.0MB in the beginning and 316.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-11-29 21:35:18,082 INFO L158 Benchmark]: TraceAbstraction took 845233.40ms. Allocated memory was 394.3MB in the beginning and 3.3GB in the end (delta: 2.9GB). Free memory was 316.0MB in the beginning and 319.1MB in the end (delta: -3.0MB). Peak memory consumption was 2.9GB. Max. memory is 16.0GB. [2023-11-29 21:35:18,083 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 394.3MB. Free memory was 347.9MB in the beginning and 347.8MB in the end (delta: 55.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 201.76ms. Allocated memory is still 394.3MB. Free memory was 342.9MB in the beginning and 331.7MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 23.45ms. Allocated memory is still 394.3MB. Free memory was 331.7MB in the beginning and 330.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.93ms. Allocated memory is still 394.3MB. Free memory was 330.3MB in the beginning and 329.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 234.92ms. Allocated memory is still 394.3MB. Free memory was 329.0MB in the beginning and 316.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 845233.40ms. Allocated memory was 394.3MB in the beginning and 3.3GB in the end (delta: 2.9GB). Free memory was 316.0MB in the beginning and 319.1MB in the end (delta: -3.0MB). Peak memory consumption was 2.9GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (39states, 45/82 universal loopers) in iteration 31,while PetriNetUnfolder was constructing finite prefix that currently has 151274 conditions, 5926 events (2224/5925 cut-off events. For 167603/171049 co-relation queries the response was YES. Maximal size of possible extension queue 1148. Compared 67592 event pairs, 12 based on Foata normal form. 122/6383 useless extension candidates. Maximal degree in co-relation 148254. Up to 3199 conditions per place.). - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (39states, 45/82 universal loopers) in iteration 31,while PetriNetUnfolder was constructing finite prefix that currently has 151274 conditions, 5926 events (2224/5925 cut-off events. For 167603/171049 co-relation queries the response was YES. Maximal size of possible extension queue 1148. Compared 67592 event pairs, 12 based on Foata normal form. 122/6383 useless extension candidates. Maximal degree in co-relation 148254. Up to 3199 conditions per place.). - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (39states, 45/82 universal loopers) in iteration 31,while PetriNetUnfolder was constructing finite prefix that currently has 151274 conditions, 5926 events (2224/5925 cut-off events. For 167603/171049 co-relation queries the response was YES. Maximal size of possible extension queue 1148. Compared 67592 event pairs, 12 based on Foata normal form. 122/6383 useless extension candidates. Maximal degree in co-relation 148254. Up to 3199 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 102 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 845.1s, OverallIterations: 31, TraceHistogramMax: 1, PathProgramHistogramMax: 24, EmptinessCheckTime: 0.0s, AutomataDifference: 777.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 15968 SdHoareTripleChecker+Valid, 121.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15968 mSDsluCounter, 27928 SdHoareTripleChecker+Invalid, 115.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25977 mSDsCounter, 2976 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 64531 IncrementalHoareTripleChecker+Invalid, 67514 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2976 mSolverCounterUnsat, 1951 mSDtfsCounter, 64531 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7776 GetRequests, 3340 SyntacticMatches, 99 SemanticMatches, 4337 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303560 ImplicationChecksByTransitivity, 261.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=651405occurred in iteration=30, InterpolantAutomatonStates: 3879, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 57.8s InterpolantComputationTime, 4017 NumberOfCodeBlocks, 4017 NumberOfCodeBlocksAsserted, 89 NumberOfCheckSat, 5906 ConstructedInterpolants, 0 QuantifiedInterpolants, 100859 SizeOfPredicates, 359 NumberOfNonLiveVariables, 4872 ConjunctsInSsa, 793 ConjunctsInUnsatCore, 91 InterpolantComputations, 1 PerfectInterpolantSequences, 0/162 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown