/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/popl20-bad-ring.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-29 21:58:15,986 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 21:58:16,069 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 21:58:16,102 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 21:58:16,102 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 21:58:16,103 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 21:58:16,103 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 21:58:16,104 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 21:58:16,104 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 21:58:16,107 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 21:58:16,108 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 21:58:16,108 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 21:58:16,108 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 21:58:16,109 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 21:58:16,109 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 21:58:16,110 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 21:58:16,110 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 21:58:16,110 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 21:58:16,110 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 21:58:16,110 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 21:58:16,111 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 21:58:16,111 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 21:58:16,111 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 21:58:16,112 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-29 21:58:16,112 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 21:58:16,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 21:58:16,113 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 21:58:16,113 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 21:58:16,113 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 21:58:16,114 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 21:58:16,115 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 21:58:16,115 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 21:58:16,115 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 21:58:16,115 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-11-29 21:58:16,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 21:58:16,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 21:58:16,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 21:58:16,359 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 21:58:16,361 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 21:58:16,362 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-ring.wvr.c [2023-11-29 21:58:17,466 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 21:58:17,677 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 21:58:17,678 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring.wvr.c [2023-11-29 21:58:17,686 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f07b17c0/fbc2f9199d104a3ca94077830b69c8c2/FLAG3da2c7302 [2023-11-29 21:58:17,701 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f07b17c0/fbc2f9199d104a3ca94077830b69c8c2 [2023-11-29 21:58:17,704 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 21:58:17,705 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-29 21:58:17,707 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 21:58:17,707 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 21:58:17,711 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 21:58:17,712 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:58:17" (1/1) ... [2023-11-29 21:58:17,713 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4031f351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:58:17, skipping insertion in model container [2023-11-29 21:58:17,713 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:58:17" (1/1) ... [2023-11-29 21:58:17,747 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 21:58:17,886 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/popl20-bad-ring.wvr.c[3986,3999] [2023-11-29 21:58:17,894 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 21:58:17,902 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 21:58:17,924 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/popl20-bad-ring.wvr.c[3986,3999] [2023-11-29 21:58:17,926 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 21:58:17,933 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 21:58:17,933 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 21:58:17,941 INFO L206 MainTranslator]: Completed translation [2023-11-29 21:58:17,942 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:58:17 WrapperNode [2023-11-29 21:58:17,942 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 21:58:17,944 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 21:58:17,944 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 21:58:17,944 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 21:58:17,949 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:58:17" (1/1) ... [2023-11-29 21:58:17,968 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:58:17" (1/1) ... [2023-11-29 21:58:18,008 INFO L138 Inliner]: procedures = 25, calls = 61, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 330 [2023-11-29 21:58:18,009 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 21:58:18,009 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 21:58:18,010 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 21:58:18,010 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 21:58:18,020 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:58:17" (1/1) ... [2023-11-29 21:58:18,020 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:58:17" (1/1) ... [2023-11-29 21:58:18,033 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:58:17" (1/1) ... [2023-11-29 21:58:18,033 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:58:17" (1/1) ... [2023-11-29 21:58:18,043 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:58:17" (1/1) ... [2023-11-29 21:58:18,047 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:58:17" (1/1) ... [2023-11-29 21:58:18,049 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:58:17" (1/1) ... [2023-11-29 21:58:18,050 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:58:17" (1/1) ... [2023-11-29 21:58:18,076 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 21:58:18,077 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 21:58:18,077 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 21:58:18,077 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 21:58:18,078 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:58:17" (1/1) ... [2023-11-29 21:58:18,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 21:58:18,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:58:18,107 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 21:58:18,109 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 21:58:18,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 21:58:18,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 21:58:18,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 21:58:18,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 21:58:18,127 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 21:58:18,128 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 21:58:18,128 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 21:58:18,128 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 21:58:18,128 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 21:58:18,128 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 21:58:18,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 21:58:18,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 21:58:18,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 21:58:18,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 21:58:18,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 21:58:18,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 21:58:18,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 21:58:18,130 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 21:58:18,241 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 21:58:18,243 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 21:58:18,640 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 21:58:18,781 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 21:58:18,781 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-29 21:58:18,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:58:18 BoogieIcfgContainer [2023-11-29 21:58:18,782 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 21:58:18,784 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 21:58:18,784 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 21:58:18,787 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 21:58:18,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 09:58:17" (1/3) ... [2023-11-29 21:58:18,787 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd6e208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:58:18, skipping insertion in model container [2023-11-29 21:58:18,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:58:17" (2/3) ... [2023-11-29 21:58:18,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd6e208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:58:18, skipping insertion in model container [2023-11-29 21:58:18,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:58:18" (3/3) ... [2023-11-29 21:58:18,789 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring.wvr.c [2023-11-29 21:58:18,806 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 21:58:18,806 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 21:58:18,806 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 21:58:18,879 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 21:58:18,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 279 transitions, 579 flow [2023-11-29 21:58:19,018 INFO L124 PetriNetUnfolderBase]: 22/276 cut-off events. [2023-11-29 21:58:19,019 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 21:58:19,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 276 events. 22/276 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 167 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 235. Up to 3 conditions per place. [2023-11-29 21:58:19,033 INFO L82 GeneralOperation]: Start removeDead. Operand has 267 places, 279 transitions, 579 flow [2023-11-29 21:58:19,040 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 253 places, 265 transitions, 548 flow [2023-11-29 21:58:19,048 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 21:58:19,054 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;@4bd64b6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 21:58:19,054 INFO L363 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-29 21:58:19,121 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 21:58:19,121 INFO L124 PetriNetUnfolderBase]: 22/264 cut-off events. [2023-11-29 21:58:19,121 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 21:58:19,122 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:58:19,122 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:19,123 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 21:58:19,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:58:19,127 INFO L85 PathProgramCache]: Analyzing trace with hash -145856359, now seen corresponding path program 1 times [2023-11-29 21:58:19,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:58:19,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623919074] [2023-11-29 21:58:19,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:58:19,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:58:19,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:58:19,504 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 21:58:19,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:58:19,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623919074] [2023-11-29 21:58:19,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623919074] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:58:19,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:58:19,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 21:58:19,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766300975] [2023-11-29 21:58:19,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:58:19,518 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 21:58:19,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:58:19,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 21:58:19,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 21:58:19,555 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 279 [2023-11-29 21:58:19,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 265 transitions, 548 flow. Second operand has 2 states, 2 states have (on average 253.5) internal successors, (507), 2 states have internal predecessors, (507), 0 states have call successors, (0), 0 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 21:58:19,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:58:19,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 279 [2023-11-29 21:58:19,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:58:19,774 INFO L124 PetriNetUnfolderBase]: 137/636 cut-off events. [2023-11-29 21:58:19,775 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2023-11-29 21:58:19,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 884 conditions, 636 events. 137/636 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2446 event pairs, 74 based on Foata normal form. 97/676 useless extension candidates. Maximal degree in co-relation 625. Up to 197 conditions per place. [2023-11-29 21:58:19,785 INFO L140 encePairwiseOnDemand]: 263/279 looper letters, 13 selfloop transitions, 0 changer transitions 8/249 dead transitions. [2023-11-29 21:58:19,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 249 transitions, 542 flow [2023-11-29 21:58:19,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 21:58:19,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-29 21:58:19,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 527 transitions. [2023-11-29 21:58:19,802 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2023-11-29 21:58:19,802 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 527 transitions. [2023-11-29 21:58:19,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 527 transitions. [2023-11-29 21:58:19,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:58:19,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 527 transitions. [2023-11-29 21:58:19,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 263.5) internal successors, (527), 2 states have internal predecessors, (527), 0 states have call successors, (0), 0 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 21:58:19,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 279.0) internal successors, (837), 3 states have internal predecessors, (837), 0 states have call successors, (0), 0 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 21:58:19,819 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 279.0) internal successors, (837), 3 states have internal predecessors, (837), 0 states have call successors, (0), 0 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 21:58:19,822 INFO L307 CegarLoopForPetriNet]: 253 programPoint places, 1 predicate places. [2023-11-29 21:58:19,822 INFO L500 AbstractCegarLoop]: Abstraction has has 254 places, 249 transitions, 542 flow [2023-11-29 21:58:19,823 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 253.5) internal successors, (507), 2 states have internal predecessors, (507), 0 states have call successors, (0), 0 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 21:58:19,823 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:58:19,824 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:19,824 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 21:58:19,824 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 21:58:19,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:58:19,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1770583511, now seen corresponding path program 1 times [2023-11-29 21:58:19,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:58:19,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360508118] [2023-11-29 21:58:19,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:58:19,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:58:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:58:20,146 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 21:58:20,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:58:20,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360508118] [2023-11-29 21:58:20,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360508118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:58:20,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:58:20,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 21:58:20,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221979790] [2023-11-29 21:58:20,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:58:20,149 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 21:58:20,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:58:20,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 21:58:20,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 21:58:20,151 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 279 [2023-11-29 21:58:20,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 249 transitions, 542 flow. Second operand has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 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 21:58:20,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:58:20,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 279 [2023-11-29 21:58:20,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:58:20,277 INFO L124 PetriNetUnfolderBase]: 125/555 cut-off events. [2023-11-29 21:58:20,277 INFO L125 PetriNetUnfolderBase]: For 104/108 co-relation queries the response was YES. [2023-11-29 21:58:20,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 989 conditions, 555 events. 125/555 cut-off events. For 104/108 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1754 event pairs, 29 based on Foata normal form. 10/530 useless extension candidates. Maximal degree in co-relation 712. Up to 186 conditions per place. [2023-11-29 21:58:20,283 INFO L140 encePairwiseOnDemand]: 276/279 looper letters, 22 selfloop transitions, 2 changer transitions 8/256 dead transitions. [2023-11-29 21:58:20,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 256 transitions, 624 flow [2023-11-29 21:58:20,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 21:58:20,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 21:58:20,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 760 transitions. [2023-11-29 21:58:20,286 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.9080047789725209 [2023-11-29 21:58:20,286 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 760 transitions. [2023-11-29 21:58:20,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 760 transitions. [2023-11-29 21:58:20,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:58:20,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 760 transitions. [2023-11-29 21:58:20,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 0 states have call successors, (0), 0 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 21:58:20,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 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 21:58:20,291 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 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 21:58:20,292 INFO L307 CegarLoopForPetriNet]: 253 programPoint places, 3 predicate places. [2023-11-29 21:58:20,292 INFO L500 AbstractCegarLoop]: Abstraction has has 256 places, 256 transitions, 624 flow [2023-11-29 21:58:20,293 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 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 21:58:20,293 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:58:20,294 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:20,294 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 21:58:20,294 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 21:58:20,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:58:20,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1459660335, now seen corresponding path program 2 times [2023-11-29 21:58:20,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:58:20,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756479837] [2023-11-29 21:58:20,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:58:20,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:58:20,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:58:20,669 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 21:58:20,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:58:20,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756479837] [2023-11-29 21:58:20,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756479837] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:58:20,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:58:20,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 21:58:20,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11617628] [2023-11-29 21:58:20,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:58:20,672 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 21:58:20,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:58:20,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 21:58:20,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 21:58:20,722 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 279 [2023-11-29 21:58:20,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 256 transitions, 624 flow. Second operand has 6 states, 6 states have (on average 209.66666666666666) internal successors, (1258), 6 states have internal predecessors, (1258), 0 states have call successors, (0), 0 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 21:58:20,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:58:20,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 279 [2023-11-29 21:58:20,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:58:20,982 INFO L124 PetriNetUnfolderBase]: 127/701 cut-off events. [2023-11-29 21:58:20,982 INFO L125 PetriNetUnfolderBase]: For 213/221 co-relation queries the response was YES. [2023-11-29 21:58:20,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1423 conditions, 701 events. 127/701 cut-off events. For 213/221 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2207 event pairs, 29 based on Foata normal form. 8/665 useless extension candidates. Maximal degree in co-relation 882. Up to 218 conditions per place. [2023-11-29 21:58:20,987 INFO L140 encePairwiseOnDemand]: 266/279 looper letters, 63 selfloop transitions, 8 changer transitions 45/297 dead transitions. [2023-11-29 21:58:20,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 297 transitions, 943 flow [2023-11-29 21:58:20,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 21:58:20,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 21:58:20,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1922 transitions. [2023-11-29 21:58:20,991 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7654320987654321 [2023-11-29 21:58:20,991 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1922 transitions. [2023-11-29 21:58:20,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1922 transitions. [2023-11-29 21:58:20,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:58:20,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1922 transitions. [2023-11-29 21:58:20,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 213.55555555555554) internal successors, (1922), 9 states have internal predecessors, (1922), 0 states have call successors, (0), 0 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 21:58:21,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 279.0) internal successors, (2790), 10 states have internal predecessors, (2790), 0 states have call successors, (0), 0 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 21:58:21,002 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 279.0) internal successors, (2790), 10 states have internal predecessors, (2790), 0 states have call successors, (0), 0 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 21:58:21,003 INFO L307 CegarLoopForPetriNet]: 253 programPoint places, 11 predicate places. [2023-11-29 21:58:21,003 INFO L500 AbstractCegarLoop]: Abstraction has has 264 places, 297 transitions, 943 flow [2023-11-29 21:58:21,004 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 209.66666666666666) internal successors, (1258), 6 states have internal predecessors, (1258), 0 states have call successors, (0), 0 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 21:58:21,004 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:58:21,004 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:21,004 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 21:58:21,005 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 21:58:21,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:58:21,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1301309774, now seen corresponding path program 1 times [2023-11-29 21:58:21,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:58:21,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299296025] [2023-11-29 21:58:21,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:58:21,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:58:21,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:58:21,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 21:58:21,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:58:21,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299296025] [2023-11-29 21:58:21,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299296025] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:58:21,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:58:21,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 21:58:21,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769158043] [2023-11-29 21:58:21,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:58:21,258 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 21:58:21,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:58:21,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 21:58:21,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 21:58:21,262 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 279 [2023-11-29 21:58:21,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 297 transitions, 943 flow. Second operand has 6 states, 6 states have (on average 210.33333333333334) internal successors, (1262), 6 states have internal predecessors, (1262), 0 states have call successors, (0), 0 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 21:58:21,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:58:21,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 279 [2023-11-29 21:58:21,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:58:21,520 INFO L124 PetriNetUnfolderBase]: 155/993 cut-off events. [2023-11-29 21:58:21,520 INFO L125 PetriNetUnfolderBase]: For 550/566 co-relation queries the response was YES. [2023-11-29 21:58:21,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2319 conditions, 993 events. 155/993 cut-off events. For 550/566 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3994 event pairs, 46 based on Foata normal form. 9/943 useless extension candidates. Maximal degree in co-relation 1250. Up to 288 conditions per place. [2023-11-29 21:58:21,527 INFO L140 encePairwiseOnDemand]: 268/279 looper letters, 67 selfloop transitions, 8 changer transitions 98/354 dead transitions. [2023-11-29 21:58:21,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 354 transitions, 1566 flow [2023-11-29 21:58:21,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 21:58:21,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 21:58:21,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1910 transitions. [2023-11-29 21:58:21,531 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7606531262445241 [2023-11-29 21:58:21,532 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1910 transitions. [2023-11-29 21:58:21,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1910 transitions. [2023-11-29 21:58:21,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:58:21,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1910 transitions. [2023-11-29 21:58:21,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 212.22222222222223) internal successors, (1910), 9 states have internal predecessors, (1910), 0 states have call successors, (0), 0 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 21:58:21,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 279.0) internal successors, (2790), 10 states have internal predecessors, (2790), 0 states have call successors, (0), 0 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 21:58:21,544 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 279.0) internal successors, (2790), 10 states have internal predecessors, (2790), 0 states have call successors, (0), 0 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 21:58:21,545 INFO L307 CegarLoopForPetriNet]: 253 programPoint places, 19 predicate places. [2023-11-29 21:58:21,545 INFO L500 AbstractCegarLoop]: Abstraction has has 272 places, 354 transitions, 1566 flow [2023-11-29 21:58:21,546 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 210.33333333333334) internal successors, (1262), 6 states have internal predecessors, (1262), 0 states have call successors, (0), 0 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 21:58:21,546 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:58:21,546 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:21,547 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 21:58:21,547 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 21:58:21,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:58:21,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1953938857, now seen corresponding path program 1 times [2023-11-29 21:58:21,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:58:21,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112857217] [2023-11-29 21:58:21,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:58:21,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:58:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:58:21,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 21:58:21,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:58:21,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112857217] [2023-11-29 21:58:21,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112857217] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:58:21,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:58:21,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 21:58:21,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375897496] [2023-11-29 21:58:21,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:58:21,955 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 21:58:21,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:58:21,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 21:58:21,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 21:58:21,958 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 279 [2023-11-29 21:58:21,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 354 transitions, 1566 flow. Second operand has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 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 21:58:21,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:58:21,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 279 [2023-11-29 21:58:21,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:58:22,290 INFO L124 PetriNetUnfolderBase]: 217/1451 cut-off events. [2023-11-29 21:58:22,290 INFO L125 PetriNetUnfolderBase]: For 1400/1424 co-relation queries the response was YES. [2023-11-29 21:58:22,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3955 conditions, 1451 events. 217/1451 cut-off events. For 1400/1424 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7621 event pairs, 75 based on Foata normal form. 25/1398 useless extension candidates. Maximal degree in co-relation 2107. Up to 424 conditions per place. [2023-11-29 21:58:22,299 INFO L140 encePairwiseOnDemand]: 267/279 looper letters, 71 selfloop transitions, 8 changer transitions 155/415 dead transitions. [2023-11-29 21:58:22,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 415 transitions, 2551 flow [2023-11-29 21:58:22,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 21:58:22,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 21:58:22,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1898 transitions. [2023-11-29 21:58:22,303 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7558741537236161 [2023-11-29 21:58:22,303 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1898 transitions. [2023-11-29 21:58:22,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1898 transitions. [2023-11-29 21:58:22,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:58:22,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1898 transitions. [2023-11-29 21:58:22,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 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 21:58:22,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 279.0) internal successors, (2790), 10 states have internal predecessors, (2790), 0 states have call successors, (0), 0 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 21:58:22,314 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 279.0) internal successors, (2790), 10 states have internal predecessors, (2790), 0 states have call successors, (0), 0 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 21:58:22,315 INFO L307 CegarLoopForPetriNet]: 253 programPoint places, 27 predicate places. [2023-11-29 21:58:22,316 INFO L500 AbstractCegarLoop]: Abstraction has has 280 places, 415 transitions, 2551 flow [2023-11-29 21:58:22,316 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 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 21:58:22,316 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:58:22,317 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:22,317 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 21:58:22,317 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 21:58:22,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:58:22,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1007891035, now seen corresponding path program 1 times [2023-11-29 21:58:22,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:58:22,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263961189] [2023-11-29 21:58:22,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:58:22,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:58:22,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:58:22,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 21:58:22,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:58:22,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263961189] [2023-11-29 21:58:22,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263961189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:58:22,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:58:22,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 21:58:22,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818657741] [2023-11-29 21:58:22,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:58:22,583 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 21:58:22,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:58:22,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 21:58:22,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 21:58:22,585 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 279 [2023-11-29 21:58:22,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 415 transitions, 2551 flow. Second operand has 5 states, 5 states have (on average 202.2) internal successors, (1011), 5 states have internal predecessors, (1011), 0 states have call successors, (0), 0 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 21:58:22,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:58:22,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 279 [2023-11-29 21:58:22,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:58:23,084 INFO L124 PetriNetUnfolderBase]: 389/1938 cut-off events. [2023-11-29 21:58:23,084 INFO L125 PetriNetUnfolderBase]: For 4084/4084 co-relation queries the response was YES. [2023-11-29 21:58:23,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6525 conditions, 1938 events. 389/1938 cut-off events. For 4084/4084 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 11607 event pairs, 120 based on Foata normal form. 0/1802 useless extension candidates. Maximal degree in co-relation 2945. Up to 640 conditions per place. [2023-11-29 21:58:23,094 INFO L140 encePairwiseOnDemand]: 266/279 looper letters, 83 selfloop transitions, 2 changer transitions 172/446 dead transitions. [2023-11-29 21:58:23,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 446 transitions, 3225 flow [2023-11-29 21:58:23,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 21:58:23,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 21:58:23,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1420 transitions. [2023-11-29 21:58:23,097 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7270865335381465 [2023-11-29 21:58:23,097 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1420 transitions. [2023-11-29 21:58:23,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1420 transitions. [2023-11-29 21:58:23,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:58:23,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1420 transitions. [2023-11-29 21:58:23,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 202.85714285714286) internal successors, (1420), 7 states have internal predecessors, (1420), 0 states have call successors, (0), 0 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 21:58:23,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 279.0) internal successors, (2232), 8 states have internal predecessors, (2232), 0 states have call successors, (0), 0 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 21:58:23,104 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 279.0) internal successors, (2232), 8 states have internal predecessors, (2232), 0 states have call successors, (0), 0 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 21:58:23,106 INFO L307 CegarLoopForPetriNet]: 253 programPoint places, 33 predicate places. [2023-11-29 21:58:23,107 INFO L500 AbstractCegarLoop]: Abstraction has has 286 places, 446 transitions, 3225 flow [2023-11-29 21:58:23,107 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 202.2) internal successors, (1011), 5 states have internal predecessors, (1011), 0 states have call successors, (0), 0 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 21:58:23,107 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:58:23,107 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:23,108 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 21:58:23,108 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 21:58:23,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:58:23,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1736869711, now seen corresponding path program 1 times [2023-11-29 21:58:23,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:58:23,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272547135] [2023-11-29 21:58:23,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:58:23,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:58:23,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:58:23,229 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 21:58:23,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:58:23,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272547135] [2023-11-29 21:58:23,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272547135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:58:23,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:58:23,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 21:58:23,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504358369] [2023-11-29 21:58:23,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:58:23,233 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 21:58:23,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:58:23,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 21:58:23,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 21:58:23,235 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 279 [2023-11-29 21:58:23,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 446 transitions, 3225 flow. Second operand has 3 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 0 states have call successors, (0), 0 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 21:58:23,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:58:23,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 279 [2023-11-29 21:58:23,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:58:23,513 INFO L124 PetriNetUnfolderBase]: 286/1633 cut-off events. [2023-11-29 21:58:23,513 INFO L125 PetriNetUnfolderBase]: For 4045/4081 co-relation queries the response was YES. [2023-11-29 21:58:23,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5716 conditions, 1633 events. 286/1633 cut-off events. For 4045/4081 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 8933 event pairs, 106 based on Foata normal form. 16/1529 useless extension candidates. Maximal degree in co-relation 2484. Up to 565 conditions per place. [2023-11-29 21:58:23,522 INFO L140 encePairwiseOnDemand]: 276/279 looper letters, 30 selfloop transitions, 2 changer transitions 167/436 dead transitions. [2023-11-29 21:58:23,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 436 transitions, 3236 flow [2023-11-29 21:58:23,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 21:58:23,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 21:58:23,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 761 transitions. [2023-11-29 21:58:23,524 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.9091995221027479 [2023-11-29 21:58:23,525 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 761 transitions. [2023-11-29 21:58:23,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 761 transitions. [2023-11-29 21:58:23,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:58:23,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 761 transitions. [2023-11-29 21:58:23,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 0 states have call successors, (0), 0 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 21:58:23,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 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 21:58:23,528 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 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 21:58:23,529 INFO L307 CegarLoopForPetriNet]: 253 programPoint places, 35 predicate places. [2023-11-29 21:58:23,529 INFO L500 AbstractCegarLoop]: Abstraction has has 288 places, 436 transitions, 3236 flow [2023-11-29 21:58:23,530 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 0 states have call successors, (0), 0 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 21:58:23,530 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:58:23,530 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:23,530 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 21:58:23,530 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 21:58:23,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:58:23,531 INFO L85 PathProgramCache]: Analyzing trace with hash -655036199, now seen corresponding path program 2 times [2023-11-29 21:58:23,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:58:23,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272997759] [2023-11-29 21:58:23,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:58:23,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:58:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:58:24,113 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 21:58:24,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:58:24,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272997759] [2023-11-29 21:58:24,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272997759] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:58:24,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208674964] [2023-11-29 21:58:24,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 21:58:24,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:58:24,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:58:24,117 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 21:58:24,140 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 21:58:24,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 21:58:24,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:58:24,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 21:58:24,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:58:24,832 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 21:58:24,833 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:58:24,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2023-11-29 21:58:25,395 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 21:58:25,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208674964] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:58:25,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:58:25,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2023-11-29 21:58:25,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457708886] [2023-11-29 21:58:25,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:58:25,397 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 21:58:25,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:58:25,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 21:58:25,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2023-11-29 21:58:25,404 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 279 [2023-11-29 21:58:25,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 436 transitions, 3236 flow. Second operand has 25 states, 25 states have (on average 199.36) internal successors, (4984), 25 states have internal predecessors, (4984), 0 states have call successors, (0), 0 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 21:58:25,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:58:25,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 279 [2023-11-29 21:58:25,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:58:26,449 INFO L124 PetriNetUnfolderBase]: 426/2579 cut-off events. [2023-11-29 21:58:26,449 INFO L125 PetriNetUnfolderBase]: For 9494/9582 co-relation queries the response was YES. [2023-11-29 21:58:26,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10117 conditions, 2579 events. 426/2579 cut-off events. For 9494/9582 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 17571 event pairs, 104 based on Foata normal form. 104/2483 useless extension candidates. Maximal degree in co-relation 4217. Up to 929 conditions per place. [2023-11-29 21:58:26,459 INFO L140 encePairwiseOnDemand]: 257/279 looper letters, 75 selfloop transitions, 24 changer transitions 348/622 dead transitions. [2023-11-29 21:58:26,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 622 transitions, 6517 flow [2023-11-29 21:58:26,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 21:58:26,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-29 21:58:26,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 5060 transitions. [2023-11-29 21:58:26,471 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7254480286738352 [2023-11-29 21:58:26,471 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 5060 transitions. [2023-11-29 21:58:26,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 5060 transitions. [2023-11-29 21:58:26,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:58:26,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 5060 transitions. [2023-11-29 21:58:26,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 202.4) internal successors, (5060), 25 states have internal predecessors, (5060), 0 states have call successors, (0), 0 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 21:58:26,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 279.0) internal successors, (7254), 26 states have internal predecessors, (7254), 0 states have call successors, (0), 0 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 21:58:26,507 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 279.0) internal successors, (7254), 26 states have internal predecessors, (7254), 0 states have call successors, (0), 0 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 21:58:26,508 INFO L307 CegarLoopForPetriNet]: 253 programPoint places, 59 predicate places. [2023-11-29 21:58:26,508 INFO L500 AbstractCegarLoop]: Abstraction has has 312 places, 622 transitions, 6517 flow [2023-11-29 21:58:26,510 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 199.36) internal successors, (4984), 25 states have internal predecessors, (4984), 0 states have call successors, (0), 0 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 21:58:26,510 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:58:26,510 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:26,521 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 21:58:26,711 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:58:26,711 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 21:58:26,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:58:26,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1252808576, now seen corresponding path program 3 times [2023-11-29 21:58:26,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:58:26,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137852905] [2023-11-29 21:58:26,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:58:26,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:58:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:58:27,899 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 21:58:27,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:58:27,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137852905] [2023-11-29 21:58:27,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137852905] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:58:27,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145059133] [2023-11-29 21:58:27,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 21:58:27,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:58:27,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:58:27,901 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 21:58:27,909 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 21:58:28,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 21:58:28,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:58:28,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 21:58:28,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:58:28,478 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 21:58:28,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:58:28,777 INFO L349 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2023-11-29 21:58:28,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 15 [2023-11-29 21:58:28,930 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 21:58:28,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145059133] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:58:28,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:58:28,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 6, 6] total 27 [2023-11-29 21:58:28,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394754687] [2023-11-29 21:58:28,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:58:28,933 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 21:58:28,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:58:28,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 21:58:28,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2023-11-29 21:58:28,938 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 279 [2023-11-29 21:58:28,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 622 transitions, 6517 flow. Second operand has 27 states, 27 states have (on average 170.7037037037037) internal successors, (4609), 27 states have internal predecessors, (4609), 0 states have call successors, (0), 0 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 21:58:28,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:58:28,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 279 [2023-11-29 21:58:28,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:58:34,818 INFO L124 PetriNetUnfolderBase]: 6411/17233 cut-off events. [2023-11-29 21:58:34,819 INFO L125 PetriNetUnfolderBase]: For 131469/135983 co-relation queries the response was YES. [2023-11-29 21:58:34,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81287 conditions, 17233 events. 6411/17233 cut-off events. For 131469/135983 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 166315 event pairs, 1205 based on Foata normal form. 72/15812 useless extension candidates. Maximal degree in co-relation 27684. Up to 6401 conditions per place. [2023-11-29 21:58:35,004 INFO L140 encePairwiseOnDemand]: 250/279 looper letters, 467 selfloop transitions, 106 changer transitions 705/1422 dead transitions. [2023-11-29 21:58:35,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 1422 transitions, 21461 flow [2023-11-29 21:58:35,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-11-29 21:58:35,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2023-11-29 21:58:35,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 10250 transitions. [2023-11-29 21:58:35,026 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6123058542413381 [2023-11-29 21:58:35,026 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 10250 transitions. [2023-11-29 21:58:35,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 10250 transitions. [2023-11-29 21:58:35,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:58:35,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 10250 transitions. [2023-11-29 21:58:35,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 170.83333333333334) internal successors, (10250), 60 states have internal predecessors, (10250), 0 states have call successors, (0), 0 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 21:58:35,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 279.0) internal successors, (17019), 61 states have internal predecessors, (17019), 0 states have call successors, (0), 0 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 21:58:35,081 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 279.0) internal successors, (17019), 61 states have internal predecessors, (17019), 0 states have call successors, (0), 0 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 21:58:35,083 INFO L307 CegarLoopForPetriNet]: 253 programPoint places, 117 predicate places. [2023-11-29 21:58:35,083 INFO L500 AbstractCegarLoop]: Abstraction has has 370 places, 1422 transitions, 21461 flow [2023-11-29 21:58:35,084 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 170.7037037037037) internal successors, (4609), 27 states have internal predecessors, (4609), 0 states have call successors, (0), 0 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 21:58:35,084 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:58:35,085 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:35,097 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 21:58:35,293 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,SelfDestructingSolverStorable8 [2023-11-29 21:58:35,294 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 21:58:35,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:58:35,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1308759392, now seen corresponding path program 4 times [2023-11-29 21:58:35,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:58:35,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540891719] [2023-11-29 21:58:35,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:58:35,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:58:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:58:37,101 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 21:58:37,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:58:37,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540891719] [2023-11-29 21:58:37,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540891719] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:58:37,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718526466] [2023-11-29 21:58:37,102 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 21:58:37,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:58:37,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:58:37,104 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 21:58:37,130 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 21:58:37,289 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 21:58:37,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:58:37,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 21:58:37,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:58:38,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 21:58:38,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-29 21:58:38,872 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 21:58:38,872 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:58:39,323 INFO L349 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2023-11-29 21:58:39,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 58 [2023-11-29 21:58:39,331 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-29 21:58:39,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 26 [2023-11-29 21:58:41,058 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 21:58:41,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718526466] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:58:41,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:58:41,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 60 [2023-11-29 21:58:41,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473751945] [2023-11-29 21:58:41,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:58:41,060 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-11-29 21:58:41,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:58:41,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-11-29 21:58:41,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=3316, Unknown=0, NotChecked=0, Total=3540 [2023-11-29 21:58:41,071 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 279 [2023-11-29 21:58:41,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 1422 transitions, 21461 flow. Second operand has 60 states, 60 states have (on average 156.85) internal successors, (9411), 60 states have internal predecessors, (9411), 0 states have call successors, (0), 0 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 21:58:41,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:58:41,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 279 [2023-11-29 21:58:41,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:58:59,392 INFO L124 PetriNetUnfolderBase]: 17267/43702 cut-off events. [2023-11-29 21:58:59,392 INFO L125 PetriNetUnfolderBase]: For 423680/447046 co-relation queries the response was YES. [2023-11-29 21:58:59,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234998 conditions, 43702 events. 17267/43702 cut-off events. For 423680/447046 co-relation queries the response was YES. Maximal size of possible extension queue 1166. Compared 484022 event pairs, 2087 based on Foata normal form. 1232/40920 useless extension candidates. Maximal degree in co-relation 49994. Up to 16556 conditions per place. [2023-11-29 21:58:59,696 INFO L140 encePairwiseOnDemand]: 223/279 looper letters, 1409 selfloop transitions, 293 changer transitions 1567/3406 dead transitions. [2023-11-29 21:58:59,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 3406 transitions, 62052 flow [2023-11-29 21:58:59,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2023-11-29 21:58:59,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2023-11-29 21:58:59,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 14528 transitions. [2023-11-29 21:58:59,714 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5722163141517981 [2023-11-29 21:58:59,714 INFO L72 ComplementDD]: Start complementDD. Operand 91 states and 14528 transitions. [2023-11-29 21:58:59,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 91 states and 14528 transitions. [2023-11-29 21:58:59,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:58:59,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 91 states and 14528 transitions. [2023-11-29 21:58:59,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 92 states, 91 states have (on average 159.64835164835165) internal successors, (14528), 91 states have internal predecessors, (14528), 0 states have call successors, (0), 0 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 21:58:59,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 92 states, 92 states have (on average 279.0) internal successors, (25668), 92 states have internal predecessors, (25668), 0 states have call successors, (0), 0 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 21:58:59,790 INFO L81 ComplementDD]: Finished complementDD. Result has 92 states, 92 states have (on average 279.0) internal successors, (25668), 92 states have internal predecessors, (25668), 0 states have call successors, (0), 0 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 21:58:59,791 INFO L307 CegarLoopForPetriNet]: 253 programPoint places, 206 predicate places. [2023-11-29 21:58:59,791 INFO L500 AbstractCegarLoop]: Abstraction has has 459 places, 3406 transitions, 62052 flow [2023-11-29 21:58:59,793 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 156.85) internal successors, (9411), 60 states have internal predecessors, (9411), 0 states have call successors, (0), 0 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 21:58:59,794 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:58:59,794 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:59,805 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 21:59:00,000 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:59:00,001 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 21:59:00,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:59:00,002 INFO L85 PathProgramCache]: Analyzing trace with hash 2117481260, now seen corresponding path program 5 times [2023-11-29 21:59:00,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:59:00,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244314291] [2023-11-29 21:59:00,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:59:00,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:59:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:59:01,425 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 21:59:01,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:59:01,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244314291] [2023-11-29 21:59:01,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244314291] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:59:01,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579119184] [2023-11-29 21:59:01,425 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 21:59:01,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:59:01,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:59:01,432 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 21:59:01,434 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 21:59:01,620 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-29 21:59:01,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:59:01,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 63 conjunts are in the unsatisfiable core [2023-11-29 21:59:01,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:59:01,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 21:59:01,704 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 21:59:01,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 21:59:02,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 21:59:03,272 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 21:59:03,272 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:59:03,700 INFO L349 Elim1Store]: treesize reduction 11, result has 42.1 percent of original size [2023-11-29 21:59:03,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 59 [2023-11-29 21:59:03,711 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-29 21:59:03,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-11-29 21:59:05,230 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 21:59:05,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579119184] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:59:05,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:59:05,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 33, 28] total 68 [2023-11-29 21:59:05,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467371067] [2023-11-29 21:59:05,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:59:05,232 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-11-29 21:59:05,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:59:05,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-11-29 21:59:05,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=500, Invalid=4056, Unknown=0, NotChecked=0, Total=4556 [2023-11-29 21:59:05,243 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 279 [2023-11-29 21:59:05,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 3406 transitions, 62052 flow. Second operand has 68 states, 68 states have (on average 153.19117647058823) internal successors, (10417), 68 states have internal predecessors, (10417), 0 states have call successors, (0), 0 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 21:59:05,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:59:05,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 279 [2023-11-29 21:59:05,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:59:54,054 INFO L124 PetriNetUnfolderBase]: 34227/85032 cut-off events. [2023-11-29 21:59:54,054 INFO L125 PetriNetUnfolderBase]: For 888883/942050 co-relation queries the response was YES. [2023-11-29 21:59:54,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516960 conditions, 85032 events. 34227/85032 cut-off events. For 888883/942050 co-relation queries the response was YES. Maximal size of possible extension queue 1973. Compared 1029224 event pairs, 3499 based on Foata normal form. 2719/80270 useless extension candidates. Maximal degree in co-relation 63923. Up to 33015 conditions per place. [2023-11-29 21:59:54,821 INFO L140 encePairwiseOnDemand]: 213/279 looper letters, 2946 selfloop transitions, 793 changer transitions 2826/6699 dead transitions. [2023-11-29 21:59:54,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 669 places, 6699 transitions, 137097 flow [2023-11-29 21:59:54,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2023-11-29 21:59:54,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2023-11-29 21:59:54,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 32730 transitions. [2023-11-29 21:59:54,864 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5559802272843092 [2023-11-29 21:59:54,864 INFO L72 ComplementDD]: Start complementDD. Operand 211 states and 32730 transitions. [2023-11-29 21:59:54,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 211 states and 32730 transitions. [2023-11-29 21:59:54,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:59:54,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 211 states and 32730 transitions. [2023-11-29 21:59:54,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 212 states, 211 states have (on average 155.11848341232226) internal successors, (32730), 211 states have internal predecessors, (32730), 0 states have call successors, (0), 0 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 21:59:55,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 212 states, 212 states have (on average 279.0) internal successors, (59148), 212 states have internal predecessors, (59148), 0 states have call successors, (0), 0 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 21:59:55,028 INFO L81 ComplementDD]: Finished complementDD. Result has 212 states, 212 states have (on average 279.0) internal successors, (59148), 212 states have internal predecessors, (59148), 0 states have call successors, (0), 0 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 21:59:55,029 INFO L307 CegarLoopForPetriNet]: 253 programPoint places, 416 predicate places. [2023-11-29 21:59:55,029 INFO L500 AbstractCegarLoop]: Abstraction has has 669 places, 6699 transitions, 137097 flow [2023-11-29 21:59:55,032 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 153.19117647058823) internal successors, (10417), 68 states have internal predecessors, (10417), 0 states have call successors, (0), 0 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 21:59:55,032 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:59:55,032 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:59:55,042 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 21:59:55,239 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:59:55,240 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 21:59:55,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:59:55,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1881315016, now seen corresponding path program 6 times [2023-11-29 21:59:55,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:59:55,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904558917] [2023-11-29 21:59:55,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:59:55,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:59:55,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:59:57,035 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 21:59:57,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:59:57,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904558917] [2023-11-29 21:59:57,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904558917] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:59:57,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039460908] [2023-11-29 21:59:57,036 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 21:59:57,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:59:57,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:59:57,037 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 21:59:57,039 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 21:59:57,220 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-29 21:59:57,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:59:57,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-29 21:59:57,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:59:58,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 21:59:58,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-29 21:59:58,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 21:59:58,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-29 21:59:58,682 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 21:59:58,682 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:59:59,155 INFO L349 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2023-11-29 21:59:59,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 152 treesize of output 136 [2023-11-29 21:59:59,163 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 21:59:59,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 85 [2023-11-29 21:59:59,170 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-29 21:59:59,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 88 [2023-11-29 22:00:01,078 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 22:00:01,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039460908] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:00:01,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:00:01,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 61 [2023-11-29 22:00:01,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823494737] [2023-11-29 22:00:01,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:00:01,079 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-11-29 22:00:01,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:00:01,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-11-29 22:00:01,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=3422, Unknown=1, NotChecked=0, Total=3660 [2023-11-29 22:00:01,086 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 279 [2023-11-29 22:00:01,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 669 places, 6699 transitions, 137097 flow. Second operand has 61 states, 61 states have (on average 159.60655737704917) internal successors, (9736), 61 states have internal predecessors, (9736), 0 states have call successors, (0), 0 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 22:00:01,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:00:01,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 279 [2023-11-29 22:00:01,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:01:40,948 INFO L124 PetriNetUnfolderBase]: 46992/113587 cut-off events. [2023-11-29 22:01:40,949 INFO L125 PetriNetUnfolderBase]: For 1397666/1487426 co-relation queries the response was YES. [2023-11-29 22:01:41,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 774252 conditions, 113587 events. 46992/113587 cut-off events. For 1397666/1487426 co-relation queries the response was YES. Maximal size of possible extension queue 2473. Compared 1400694 event pairs, 4458 based on Foata normal form. 3822/107321 useless extension candidates. Maximal degree in co-relation 103765. Up to 45439 conditions per place. [2023-11-29 22:01:41,934 INFO L140 encePairwiseOnDemand]: 222/279 looper letters, 4549 selfloop transitions, 679 changer transitions 4265/9641 dead transitions. [2023-11-29 22:01:41,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 774 places, 9641 transitions, 217695 flow [2023-11-29 22:01:41,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-11-29 22:01:41,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2023-11-29 22:01:41,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 17176 transitions. [2023-11-29 22:01:41,948 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5807804152295936 [2023-11-29 22:01:41,948 INFO L72 ComplementDD]: Start complementDD. Operand 106 states and 17176 transitions. [2023-11-29 22:01:41,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 17176 transitions. [2023-11-29 22:01:41,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:01:41,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 106 states and 17176 transitions. [2023-11-29 22:01:41,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 107 states, 106 states have (on average 162.03773584905662) internal successors, (17176), 106 states have internal predecessors, (17176), 0 states have call successors, (0), 0 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 22:01:41,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 107 states, 107 states have (on average 279.0) internal successors, (29853), 107 states have internal predecessors, (29853), 0 states have call successors, (0), 0 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 22:01:41,997 INFO L81 ComplementDD]: Finished complementDD. Result has 107 states, 107 states have (on average 279.0) internal successors, (29853), 107 states have internal predecessors, (29853), 0 states have call successors, (0), 0 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 22:01:41,998 INFO L307 CegarLoopForPetriNet]: 253 programPoint places, 521 predicate places. [2023-11-29 22:01:41,998 INFO L500 AbstractCegarLoop]: Abstraction has has 774 places, 9641 transitions, 217695 flow [2023-11-29 22:01:41,999 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 159.60655737704917) internal successors, (9736), 61 states have internal predecessors, (9736), 0 states have call successors, (0), 0 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 22:01:41,999 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:01:41,999 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:01:42,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 22:01:42,205 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 22:01:42,205 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:01:42,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:01:42,206 INFO L85 PathProgramCache]: Analyzing trace with hash 660868132, now seen corresponding path program 7 times [2023-11-29 22:01:42,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:01:42,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142155676] [2023-11-29 22:01:42,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:01:42,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:01:42,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:01:43,678 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 22:01:43,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:01:43,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142155676] [2023-11-29 22:01:43,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142155676] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:01:43,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693235183] [2023-11-29 22:01:43,679 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 22:01:43,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:01:43,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:01:43,680 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 22:01:43,688 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 22:01:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:01:43,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 22:01:43,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:01:43,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 22:01:43,886 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-29 22:01:43,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-11-29 22:01:44,037 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-11-29 22:01:44,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2023-11-29 22:01:44,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-29 22:01:44,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-29 22:01:45,320 INFO L349 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2023-11-29 22:01:45,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 13 [2023-11-29 22:01:45,349 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 22:01:45,349 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:01:45,794 INFO L349 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2023-11-29 22:01:45,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 312 treesize of output 280 [2023-11-29 22:01:45,803 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 22:01:45,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 80 [2023-11-29 22:01:45,809 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-29 22:01:45,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 67 [2023-11-29 22:01:47,629 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 22:01:47,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693235183] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:01:47,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:01:47,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 65 [2023-11-29 22:01:47,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584779513] [2023-11-29 22:01:47,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:01:47,631 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-11-29 22:01:47,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:01:47,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-11-29 22:01:47,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=3889, Unknown=1, NotChecked=0, Total=4160 [2023-11-29 22:01:47,636 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 279 [2023-11-29 22:01:47,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 774 places, 9641 transitions, 217695 flow. Second operand has 65 states, 65 states have (on average 155.56923076923076) internal successors, (10112), 65 states have internal predecessors, (10112), 0 states have call successors, (0), 0 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 22:01:47,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:01:47,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 279 [2023-11-29 22:01:47,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:04:17,854 INFO L124 PetriNetUnfolderBase]: 47350/114067 cut-off events. [2023-11-29 22:04:17,855 INFO L125 PetriNetUnfolderBase]: For 1558763/1658753 co-relation queries the response was YES. [2023-11-29 22:04:18,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 853453 conditions, 114067 events. 47350/114067 cut-off events. For 1558763/1658753 co-relation queries the response was YES. Maximal size of possible extension queue 2445. Compared 1403674 event pairs, 4337 based on Foata normal form. 2871/107175 useless extension candidates. Maximal degree in co-relation 115123. Up to 45953 conditions per place. [2023-11-29 22:04:18,886 INFO L140 encePairwiseOnDemand]: 223/279 looper letters, 4530 selfloop transitions, 747 changer transitions 4293/9715 dead transitions. [2023-11-29 22:04:18,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 878 places, 9715 transitions, 238907 flow [2023-11-29 22:04:18,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2023-11-29 22:04:18,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2023-11-29 22:04:18,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 17219 transitions. [2023-11-29 22:04:18,899 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5662095952122588 [2023-11-29 22:04:18,899 INFO L72 ComplementDD]: Start complementDD. Operand 109 states and 17219 transitions. [2023-11-29 22:04:18,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 109 states and 17219 transitions. [2023-11-29 22:04:18,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:04:18,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 109 states and 17219 transitions. [2023-11-29 22:04:18,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 110 states, 109 states have (on average 157.9724770642202) internal successors, (17219), 109 states have internal predecessors, (17219), 0 states have call successors, (0), 0 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 22:04:18,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 110 states, 110 states have (on average 279.0) internal successors, (30690), 110 states have internal predecessors, (30690), 0 states have call successors, (0), 0 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 22:04:18,947 INFO L81 ComplementDD]: Finished complementDD. Result has 110 states, 110 states have (on average 279.0) internal successors, (30690), 110 states have internal predecessors, (30690), 0 states have call successors, (0), 0 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 22:04:18,948 INFO L307 CegarLoopForPetriNet]: 253 programPoint places, 625 predicate places. [2023-11-29 22:04:18,948 INFO L500 AbstractCegarLoop]: Abstraction has has 878 places, 9715 transitions, 238907 flow [2023-11-29 22:04:18,950 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 155.56923076923076) internal successors, (10112), 65 states have internal predecessors, (10112), 0 states have call successors, (0), 0 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 22:04:18,950 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:04:18,950 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:04:18,960 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 22:04:19,157 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:04:19,157 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:04:19,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:04:19,158 INFO L85 PathProgramCache]: Analyzing trace with hash 128214370, now seen corresponding path program 1 times [2023-11-29 22:04:19,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:04:19,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324328536] [2023-11-29 22:04:19,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:04:19,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:04:19,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:04:19,516 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 22:04:19,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:04:19,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324328536] [2023-11-29 22:04:19,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324328536] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:04:19,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976197963] [2023-11-29 22:04:19,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:04:19,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:04:19,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:04:19,520 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 22:04:19,524 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 22:04:19,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:04:19,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 22:04:19,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:04:19,962 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 22:04:19,963 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:04:20,341 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 22:04:20,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976197963] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:04:20,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:04:20,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 23 [2023-11-29 22:04:20,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686261674] [2023-11-29 22:04:20,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:04:20,342 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 22:04:20,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:04:20,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 22:04:20,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2023-11-29 22:04:20,344 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 279 [2023-11-29 22:04:20,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 878 places, 9715 transitions, 238907 flow. Second operand has 23 states, 23 states have (on average 200.08695652173913) internal successors, (4602), 23 states have internal predecessors, (4602), 0 states have call successors, (0), 0 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 22:04:20,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:04:20,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 279 [2023-11-29 22:04:20,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:05:47,991 INFO L124 PetriNetUnfolderBase]: 35867/89607 cut-off events. [2023-11-29 22:05:47,991 INFO L125 PetriNetUnfolderBase]: For 1520263/1606529 co-relation queries the response was YES. [2023-11-29 22:05:48,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 697876 conditions, 89607 events. 35867/89607 cut-off events. For 1520263/1606529 co-relation queries the response was YES. Maximal size of possible extension queue 1981. Compared 1086875 event pairs, 3943 based on Foata normal form. 1662/83598 useless extension candidates. Maximal degree in co-relation 122126. Up to 35526 conditions per place. [2023-11-29 22:05:48,798 INFO L140 encePairwiseOnDemand]: 258/279 looper letters, 2272 selfloop transitions, 94 changer transitions 4933/8341 dead transitions. [2023-11-29 22:05:48,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 893 places, 8341 transitions, 220771 flow [2023-11-29 22:05:48,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 22:05:48,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-29 22:05:48,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4830 transitions. [2023-11-29 22:05:48,801 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7213261648745519 [2023-11-29 22:05:48,801 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4830 transitions. [2023-11-29 22:05:48,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4830 transitions. [2023-11-29 22:05:48,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:05:48,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4830 transitions. [2023-11-29 22:05:48,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 201.25) internal successors, (4830), 24 states have internal predecessors, (4830), 0 states have call successors, (0), 0 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 22:05:48,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 279.0) internal successors, (6975), 25 states have internal predecessors, (6975), 0 states have call successors, (0), 0 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 22:05:48,811 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 279.0) internal successors, (6975), 25 states have internal predecessors, (6975), 0 states have call successors, (0), 0 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 22:05:48,811 INFO L307 CegarLoopForPetriNet]: 253 programPoint places, 640 predicate places. [2023-11-29 22:05:48,812 INFO L500 AbstractCegarLoop]: Abstraction has has 893 places, 8341 transitions, 220771 flow [2023-11-29 22:05:48,812 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 200.08695652173913) internal successors, (4602), 23 states have internal predecessors, (4602), 0 states have call successors, (0), 0 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 22:05:48,812 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:05:48,812 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:48,822 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 22:05:49,019 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:05:49,020 INFO L425 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:05:49,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:05:49,020 INFO L85 PathProgramCache]: Analyzing trace with hash -48422945, now seen corresponding path program 8 times [2023-11-29 22:05:49,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:05:49,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570419433] [2023-11-29 22:05:49,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:05:49,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:05:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:05:51,683 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 22:05:51,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:05:51,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570419433] [2023-11-29 22:05:51,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570419433] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:05:51,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317620235] [2023-11-29 22:05:51,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 22:05:51,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:05:51,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:05:51,685 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 22:05:51,688 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 22:05:51,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 22:05:51,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:05:51,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-29 22:05:51,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:05:52,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 22:05:52,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2023-11-29 22:05:52,971 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 27 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 22:05:52,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:05:53,398 INFO L349 Elim1Store]: treesize reduction 11, result has 42.1 percent of original size [2023-11-29 22:05:53,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 59 [2023-11-29 22:05:53,407 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-29 22:05:53,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-11-29 22:05:54,530 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 22:05:54,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317620235] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:05:54,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:05:54,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 23] total 64 [2023-11-29 22:05:54,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487252831] [2023-11-29 22:05:54,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:05:54,531 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-11-29 22:05:54,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:05:54,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-11-29 22:05:54,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=3648, Unknown=0, NotChecked=0, Total=4032 [2023-11-29 22:05:54,537 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 279 [2023-11-29 22:05:54,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 893 places, 8341 transitions, 220771 flow. Second operand has 64 states, 64 states have (on average 156.78125) internal successors, (10034), 64 states have internal predecessors, (10034), 0 states have call successors, (0), 0 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 22:05:54,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:05:54,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 279 [2023-11-29 22:05:54,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:09:03,441 INFO L124 PetriNetUnfolderBase]: 64395/156123 cut-off events. [2023-11-29 22:09:03,441 INFO L125 PetriNetUnfolderBase]: For 3030213/3204219 co-relation queries the response was YES. [2023-11-29 22:09:04,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1338702 conditions, 156123 events. 64395/156123 cut-off events. For 3030213/3204219 co-relation queries the response was YES. Maximal size of possible extension queue 3037. Compared 1985068 event pairs, 6742 based on Foata normal form. 6346/149719 useless extension candidates. Maximal degree in co-relation 118563. Up to 63826 conditions per place. [2023-11-29 22:09:05,119 INFO L140 encePairwiseOnDemand]: 223/279 looper letters, 5231 selfloop transitions, 1136 changer transitions 7479/13991 dead transitions. [2023-11-29 22:09:05,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1045 places, 13991 transitions, 396380 flow [2023-11-29 22:09:05,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2023-11-29 22:09:05,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2023-11-29 22:09:05,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 24560 transitions. [2023-11-29 22:09:05,133 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5679269279685513 [2023-11-29 22:09:05,133 INFO L72 ComplementDD]: Start complementDD. Operand 155 states and 24560 transitions. [2023-11-29 22:09:05,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 155 states and 24560 transitions. [2023-11-29 22:09:05,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:09:05,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 155 states and 24560 transitions. [2023-11-29 22:09:05,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 156 states, 155 states have (on average 158.4516129032258) internal successors, (24560), 155 states have internal predecessors, (24560), 0 states have call successors, (0), 0 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 22:09:05,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 156 states, 156 states have (on average 279.0) internal successors, (43524), 156 states have internal predecessors, (43524), 0 states have call successors, (0), 0 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 22:09:05,202 INFO L81 ComplementDD]: Finished complementDD. Result has 156 states, 156 states have (on average 279.0) internal successors, (43524), 156 states have internal predecessors, (43524), 0 states have call successors, (0), 0 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 22:09:05,203 INFO L307 CegarLoopForPetriNet]: 253 programPoint places, 792 predicate places. [2023-11-29 22:09:05,203 INFO L500 AbstractCegarLoop]: Abstraction has has 1045 places, 13991 transitions, 396380 flow [2023-11-29 22:09:05,204 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 156.78125) internal successors, (10034), 64 states have internal predecessors, (10034), 0 states have call successors, (0), 0 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 22:09:05,204 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:09:05,205 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:09:05,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 22:09:05,410 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,SelfDestructingSolverStorable14 [2023-11-29 22:09:05,411 INFO L425 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:09:05,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:09:05,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1741171085, now seen corresponding path program 9 times [2023-11-29 22:09:05,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:09:05,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808725967] [2023-11-29 22:09:05,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:09:05,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:09:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:09:07,568 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 22:09:07,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:09:07,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808725967] [2023-11-29 22:09:07,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808725967] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:09:07,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810844044] [2023-11-29 22:09:07,569 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 22:09:07,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:09:07,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:09:07,570 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 22:09:07,571 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 22:09:07,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 22:09:07,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:09:07,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 22:09:07,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:09:08,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 22:09:08,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-29 22:09:08,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 22:09:08,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-29 22:09:08,673 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-29 22:09:08,673 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 22:09:08,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810844044] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:09:08,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 22:09:08,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [25] total 36 [2023-11-29 22:09:08,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662163237] [2023-11-29 22:09:08,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:09:08,674 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 22:09:08,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:09:08,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 22:09:08,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1163, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 22:09:08,676 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 279 [2023-11-29 22:09:08,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1045 places, 13991 transitions, 396380 flow. Second operand has 14 states, 14 states have (on average 194.71428571428572) internal successors, (2726), 14 states have internal predecessors, (2726), 0 states have call successors, (0), 0 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 22:09:08,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:09:08,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 279 [2023-11-29 22:09:08,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-11-29 22:11:04,634 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-29 22:11:04,635 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 22:11:04,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 22:11:04,786 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-29 22:11:04,792 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 22:11:04,987 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,SelfDestructingSolverStorable15 [2023-11-29 22:11:04,987 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (14states, 190/279 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 423434 conditions, 49806 events (16419/49805 cut-off events. For 997532/1069302 co-relation queries the response was YES. Maximal size of possible extension queue 2385. Compared 662905 event pairs, 2451 based on Foata normal form. 807/48800 useless extension candidates. Maximal degree in co-relation 69572. Up to 17270 conditions per place.). [2023-11-29 22:11:04,989 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-29 22:11:04,989 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-29 22:11:04,989 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-29 22:11:04,989 INFO L457 BasicCegarLoop]: Path program histogram: [9, 2, 1, 1, 1, 1, 1] [2023-11-29 22:11:04,992 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 22:11:04,992 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 22:11:04,995 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:11:04 BasicIcfg [2023-11-29 22:11:04,995 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 22:11:04,996 INFO L158 Benchmark]: Toolchain (without parser) took 767290.41ms. Allocated memory was 360.7MB in the beginning and 7.6GB in the end (delta: 7.3GB). Free memory was 302.8MB in the beginning and 2.8GB in the end (delta: -2.5GB). Peak memory consumption was 5.7GB. Max. memory is 16.0GB. [2023-11-29 22:11:04,996 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 360.7MB. Free memory is still 304.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-29 22:11:04,996 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.10ms. Allocated memory is still 360.7MB. Free memory was 302.6MB in the beginning and 289.8MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-11-29 22:11:04,999 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.39ms. Allocated memory is still 360.7MB. Free memory was 289.8MB in the beginning and 287.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 22:11:05,000 INFO L158 Benchmark]: Boogie Preprocessor took 66.64ms. Allocated memory is still 360.7MB. Free memory was 287.2MB in the beginning and 284.9MB in the end (delta: 2.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-11-29 22:11:05,000 INFO L158 Benchmark]: RCFGBuilder took 705.63ms. Allocated memory was 360.7MB in the beginning and 549.5MB in the end (delta: 188.7MB). Free memory was 284.9MB in the beginning and 485.9MB in the end (delta: -201.1MB). Peak memory consumption was 31.9MB. Max. memory is 16.0GB. [2023-11-29 22:11:05,000 INFO L158 Benchmark]: TraceAbstraction took 766211.24ms. Allocated memory was 549.5MB in the beginning and 7.6GB in the end (delta: 7.1GB). Free memory was 484.9MB in the beginning and 2.8GB in the end (delta: -2.3GB). Peak memory consumption was 5.7GB. Max. memory is 16.0GB. [2023-11-29 22:11:05,001 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 360.7MB. Free memory is still 304.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 235.10ms. Allocated memory is still 360.7MB. Free memory was 302.6MB in the beginning and 289.8MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 65.39ms. Allocated memory is still 360.7MB. Free memory was 289.8MB in the beginning and 287.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 66.64ms. Allocated memory is still 360.7MB. Free memory was 287.2MB in the beginning and 284.9MB in the end (delta: 2.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * RCFGBuilder took 705.63ms. Allocated memory was 360.7MB in the beginning and 549.5MB in the end (delta: 188.7MB). Free memory was 284.9MB in the beginning and 485.9MB in the end (delta: -201.1MB). Peak memory consumption was 31.9MB. Max. memory is 16.0GB. * TraceAbstraction took 766211.24ms. Allocated memory was 549.5MB in the beginning and 7.6GB in the end (delta: 7.1GB). Free memory was 484.9MB in the beginning and 2.8GB in the end (delta: -2.3GB). Peak memory consumption was 5.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 150]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (14states, 190/279 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 423434 conditions, 49806 events (16419/49805 cut-off events. For 997532/1069302 co-relation queries the response was YES. Maximal size of possible extension queue 2385. Compared 662905 event pairs, 2451 based on Foata normal form. 807/48800 useless extension candidates. Maximal degree in co-relation 69572. Up to 17270 conditions per place.). - TimeoutResultAtElement [Line: 143]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (14states, 190/279 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 423434 conditions, 49806 events (16419/49805 cut-off events. For 997532/1069302 co-relation queries the response was YES. Maximal size of possible extension queue 2385. Compared 662905 event pairs, 2451 based on Foata normal form. 807/48800 useless extension candidates. Maximal degree in co-relation 69572. Up to 17270 conditions per place.). - TimeoutResultAtElement [Line: 142]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (14states, 190/279 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 423434 conditions, 49806 events (16419/49805 cut-off events. For 997532/1069302 co-relation queries the response was YES. Maximal size of possible extension queue 2385. Compared 662905 event pairs, 2451 based on Foata normal form. 807/48800 useless extension candidates. Maximal degree in co-relation 69572. Up to 17270 conditions per place.). - TimeoutResultAtElement [Line: 144]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (14states, 190/279 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 423434 conditions, 49806 events (16419/49805 cut-off events. For 997532/1069302 co-relation queries the response was YES. Maximal size of possible extension queue 2385. Compared 662905 event pairs, 2451 based on Foata normal form. 807/48800 useless extension candidates. Maximal degree in co-relation 69572. Up to 17270 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 298 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 766.1s, OverallIterations: 16, TraceHistogramMax: 3, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 725.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15431 SdHoareTripleChecker+Valid, 13.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15431 mSDsluCounter, 9251 SdHoareTripleChecker+Invalid, 11.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8601 mSDsCounter, 1345 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22584 IncrementalHoareTripleChecker+Invalid, 23929 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1345 mSolverCounterUnsat, 650 mSDtfsCounter, 22584 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5188 GetRequests, 3985 SyntacticMatches, 4 SemanticMatches, 1199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64382 ImplicationChecksByTransitivity, 48.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=396380occurred in iteration=15, InterpolantAutomatonStates: 823, 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: 0.4s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 35.4s InterpolantComputationTime, 5999 NumberOfCodeBlocks, 5975 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 7947 ConstructedInterpolants, 169 QuantifiedInterpolants, 69733 SizeOfPredicates, 167 NumberOfNonLiveVariables, 5035 ConjunctsInSsa, 276 ConjunctsInUnsatCore, 33 InterpolantComputations, 8 PerfectInterpolantSequences, 142/421 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