/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.fix-rcfgbuilder-lbe-0ccecc1-m [2023-11-10 12:25:48,029 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-10 12:25:48,267 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 [2023-11-10 12:25:48,286 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-10 12:25:48,286 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-10 12:25:48,287 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-10 12:25:48,287 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-10 12:25:48,287 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-10 12:25:48,288 INFO L153 SettingsManager]: * Use SBE=true [2023-11-10 12:25:48,291 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-10 12:25:48,291 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-10 12:25:48,291 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-10 12:25:48,291 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-10 12:25:48,291 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-10 12:25:48,291 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-10 12:25:48,292 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-10 12:25:48,292 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-10 12:25:48,292 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-10 12:25:48,292 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-10 12:25:48,292 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-10 12:25:48,292 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-10 12:25:48,293 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-10 12:25:48,293 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-10 12:25:48,293 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-10 12:25:48,293 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-10 12:25:48,293 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 12:25:48,293 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-10 12:25:48,294 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-10 12:25:48,294 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-10 12:25:48,294 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-10 12:25:48,294 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-10 12:25:48,294 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-10 12:25:48,294 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-10 12:25:48,294 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-10 12:25:48,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-10 12:25:48,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-10 12:25:48,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-10 12:25:48,478 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-10 12:25:48,478 INFO L274 PluginConnector]: CDTParser initialized [2023-11-10 12:25:48,479 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c [2023-11-10 12:25:49,597 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-10 12:25:49,760 INFO L384 CDTParser]: Found 1 translation units. [2023-11-10 12:25:49,760 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c [2023-11-10 12:25:49,766 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2722cfc1e/08dd874e6d454fc6bdfd9feec51ea192/FLAG99a350f52 [2023-11-10 12:25:49,776 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2722cfc1e/08dd874e6d454fc6bdfd9feec51ea192 [2023-11-10 12:25:49,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-10 12:25:49,780 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-10 12:25:49,781 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-10 12:25:49,781 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-10 12:25:49,784 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-10 12:25:49,785 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:25:49" (1/1) ... [2023-11-10 12:25:49,785 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53240532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:25:49, skipping insertion in model container [2023-11-10 12:25:49,785 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:25:49" (1/1) ... [2023-11-10 12:25:49,803 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-10 12:25:49,924 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-threaded-sum-2.wvr.c[2476,2489] [2023-11-10 12:25:49,930 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 12:25:49,943 INFO L202 MainTranslator]: Completed pre-run [2023-11-10 12:25:49,957 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-threaded-sum-2.wvr.c[2476,2489] [2023-11-10 12:25:49,958 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 12:25:49,965 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-10 12:25:49,965 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-10 12:25:49,972 INFO L206 MainTranslator]: Completed translation [2023-11-10 12:25:49,973 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:25:49 WrapperNode [2023-11-10 12:25:49,973 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-10 12:25:49,974 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-10 12:25:49,974 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-10 12:25:49,974 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-10 12:25:49,979 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:25:49" (1/1) ... [2023-11-10 12:25:49,985 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:25:49" (1/1) ... [2023-11-10 12:25:49,998 INFO L138 Inliner]: procedures = 21, calls = 34, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 60 [2023-11-10 12:25:49,999 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-10 12:25:49,999 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-10 12:25:49,999 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-10 12:25:50,000 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-10 12:25:50,007 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:25:49" (1/1) ... [2023-11-10 12:25:50,007 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:25:49" (1/1) ... [2023-11-10 12:25:50,009 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:25:49" (1/1) ... [2023-11-10 12:25:50,009 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:25:49" (1/1) ... [2023-11-10 12:25:50,017 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:25:49" (1/1) ... [2023-11-10 12:25:50,020 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:25:49" (1/1) ... [2023-11-10 12:25:50,021 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:25:49" (1/1) ... [2023-11-10 12:25:50,022 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:25:49" (1/1) ... [2023-11-10 12:25:50,024 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-10 12:25:50,025 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-10 12:25:50,025 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-10 12:25:50,025 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-10 12:25:50,025 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:25:49" (1/1) ... [2023-11-10 12:25:50,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 12:25:50,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:25:50,052 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) [2023-11-10 12:25:50,060 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 [2023-11-10 12:25:50,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-10 12:25:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-10 12:25:50,083 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-10 12:25:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-10 12:25:50,083 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-10 12:25:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-10 12:25:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-10 12:25:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-10 12:25:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-10 12:25:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-10 12:25:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-10 12:25:50,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-10 12:25:50,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-10 12:25:50,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-10 12:25:50,085 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-10 12:25:50,153 INFO L236 CfgBuilder]: Building ICFG [2023-11-10 12:25:50,155 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-10 12:25:50,290 INFO L277 CfgBuilder]: Performing block encoding [2023-11-10 12:25:50,328 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-10 12:25:50,328 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-10 12:25:50,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:25:50 BoogieIcfgContainer [2023-11-10 12:25:50,331 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-10 12:25:50,332 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-10 12:25:50,332 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-10 12:25:50,335 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-10 12:25:50,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 12:25:49" (1/3) ... [2023-11-10 12:25:50,336 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a783d03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:25:50, skipping insertion in model container [2023-11-10 12:25:50,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:25:49" (2/3) ... [2023-11-10 12:25:50,336 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a783d03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:25:50, skipping insertion in model container [2023-11-10 12:25:50,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:25:50" (3/3) ... [2023-11-10 12:25:50,337 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-threaded-sum-2.wvr.c [2023-11-10 12:25:50,350 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-10 12:25:50,350 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-10 12:25:50,350 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-10 12:25:50,397 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-10 12:25:50,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 86 transitions, 186 flow [2023-11-10 12:25:50,487 INFO L124 PetriNetUnfolderBase]: 6/84 cut-off events. [2023-11-10 12:25:50,488 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-10 12:25:50,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 84 events. 6/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 41 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-11-10 12:25:50,493 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 86 transitions, 186 flow [2023-11-10 12:25:50,496 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 75 transitions, 162 flow [2023-11-10 12:25:50,508 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 12:25:50,514 INFO L357 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=false, 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;@4bd966c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 12:25:50,514 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-10 12:25:50,534 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 12:25:50,534 INFO L124 PetriNetUnfolderBase]: 6/74 cut-off events. [2023-11-10 12:25:50,534 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-10 12:25:50,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:25:50,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:25:50,536 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:25:50,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:25:50,540 INFO L85 PathProgramCache]: Analyzing trace with hash -273082592, now seen corresponding path program 1 times [2023-11-10 12:25:50,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:25:50,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545021042] [2023-11-10 12:25:50,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:25:50,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:25:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:25:51,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:25:51,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:25:51,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545021042] [2023-11-10 12:25:51,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545021042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:25:51,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:25:51,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 12:25:51,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488193650] [2023-11-10 12:25:51,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:25:51,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 12:25:51,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:25:51,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 12:25:51,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-10 12:25:51,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 86 [2023-11-10 12:25:51,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 75 transitions, 162 flow. Second operand has 6 states, 6 states have (on average 52.166666666666664) internal successors, (313), 6 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:25:51,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:25:51,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 86 [2023-11-10 12:25:51,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:25:51,478 INFO L124 PetriNetUnfolderBase]: 37/157 cut-off events. [2023-11-10 12:25:51,478 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-11-10 12:25:51,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 157 events. 37/157 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 419 event pairs, 9 based on Foata normal form. 13/154 useless extension candidates. Maximal degree in co-relation 149. Up to 71 conditions per place. [2023-11-10 12:25:51,482 INFO L140 encePairwiseOnDemand]: 74/86 looper letters, 34 selfloop transitions, 7 changer transitions 2/81 dead transitions. [2023-11-10 12:25:51,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 81 transitions, 269 flow [2023-11-10 12:25:51,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-10 12:25:51,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-10 12:25:51,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 387 transitions. [2023-11-10 12:25:51,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2023-11-10 12:25:51,494 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 387 transitions. [2023-11-10 12:25:51,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 387 transitions. [2023-11-10 12:25:51,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:25:51,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 387 transitions. [2023-11-10 12:25:51,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 55.285714285714285) internal successors, (387), 7 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:25:51,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 86.0) internal successors, (688), 8 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:25:51,504 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 86.0) internal successors, (688), 8 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:25:51,505 INFO L175 Difference]: Start difference. First operand has 76 places, 75 transitions, 162 flow. Second operand 7 states and 387 transitions. [2023-11-10 12:25:51,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 81 transitions, 269 flow [2023-11-10 12:25:51,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 81 transitions, 255 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-10 12:25:51,510 INFO L231 Difference]: Finished difference. Result has 80 places, 73 transitions, 178 flow [2023-11-10 12:25:51,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=178, PETRI_PLACES=80, PETRI_TRANSITIONS=73} [2023-11-10 12:25:51,514 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 4 predicate places. [2023-11-10 12:25:51,514 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 73 transitions, 178 flow [2023-11-10 12:25:51,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.166666666666664) internal successors, (313), 6 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:25:51,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:25:51,515 INFO L208 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] [2023-11-10 12:25:51,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-10 12:25:51,515 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:25:51,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:25:51,516 INFO L85 PathProgramCache]: Analyzing trace with hash -296694407, now seen corresponding path program 1 times [2023-11-10 12:25:51,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:25:51,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410159707] [2023-11-10 12:25:51,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:25:51,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:25:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:25:51,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-10 12:25:51,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:25:51,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410159707] [2023-11-10 12:25:51,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410159707] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:25:51,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:25:51,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 12:25:51,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047689184] [2023-11-10 12:25:51,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:25:51,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 12:25:51,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:25:51,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 12:25:51,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-10 12:25:51,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 86 [2023-11-10 12:25:51,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 73 transitions, 178 flow. Second operand has 6 states, 6 states have (on average 55.0) internal successors, (330), 6 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:25:51,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:25:51,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 86 [2023-11-10 12:25:51,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:25:51,922 INFO L124 PetriNetUnfolderBase]: 51/182 cut-off events. [2023-11-10 12:25:51,922 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-11-10 12:25:51,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 182 events. 51/182 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 568 event pairs, 6 based on Foata normal form. 3/176 useless extension candidates. Maximal degree in co-relation 180. Up to 55 conditions per place. [2023-11-10 12:25:51,925 INFO L140 encePairwiseOnDemand]: 79/86 looper letters, 41 selfloop transitions, 7 changer transitions 0/89 dead transitions. [2023-11-10 12:25:51,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 89 transitions, 317 flow [2023-11-10 12:25:51,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-10 12:25:51,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-10 12:25:51,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 402 transitions. [2023-11-10 12:25:51,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6677740863787376 [2023-11-10 12:25:51,929 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 402 transitions. [2023-11-10 12:25:51,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 402 transitions. [2023-11-10 12:25:51,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:25:51,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 402 transitions. [2023-11-10 12:25:51,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 57.42857142857143) internal successors, (402), 7 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:25:51,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 86.0) internal successors, (688), 8 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:25:51,933 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 86.0) internal successors, (688), 8 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:25:51,934 INFO L175 Difference]: Start difference. First operand has 80 places, 73 transitions, 178 flow. Second operand 7 states and 402 transitions. [2023-11-10 12:25:51,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 89 transitions, 317 flow [2023-11-10 12:25:51,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 89 transitions, 313 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-10 12:25:51,938 INFO L231 Difference]: Finished difference. Result has 83 places, 75 transitions, 203 flow [2023-11-10 12:25:51,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=203, PETRI_PLACES=83, PETRI_TRANSITIONS=75} [2023-11-10 12:25:51,941 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 7 predicate places. [2023-11-10 12:25:51,941 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 75 transitions, 203 flow [2023-11-10 12:25:51,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 55.0) internal successors, (330), 6 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:25:51,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:25:51,942 INFO L208 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] [2023-11-10 12:25:51,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-10 12:25:51,942 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:25:51,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:25:51,944 INFO L85 PathProgramCache]: Analyzing trace with hash -129127959, now seen corresponding path program 1 times [2023-11-10 12:25:51,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:25:51,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490627625] [2023-11-10 12:25:51,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:25:51,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:25:51,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:25:52,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:25:52,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:25:52,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490627625] [2023-11-10 12:25:52,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490627625] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:25:52,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421682353] [2023-11-10 12:25:52,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:25:52,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:25:52,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:25:52,231 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) [2023-11-10 12:25:52,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-10 12:25:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:25:52,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-10 12:25:52,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:25:52,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-10 12:25:52,572 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-10 12:25:52,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421682353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:25:52,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-10 12:25:52,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2023-11-10 12:25:52,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017383422] [2023-11-10 12:25:52,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:25:52,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 12:25:52,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:25:52,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 12:25:52,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-10 12:25:52,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2023-11-10 12:25:52,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 75 transitions, 203 flow. Second operand has 7 states, 7 states have (on average 50.285714285714285) internal successors, (352), 7 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:25:52,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:25:52,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2023-11-10 12:25:52,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:25:52,849 INFO L124 PetriNetUnfolderBase]: 86/250 cut-off events. [2023-11-10 12:25:52,849 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2023-11-10 12:25:52,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 590 conditions, 250 events. 86/250 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 792 event pairs, 11 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 287. Up to 106 conditions per place. [2023-11-10 12:25:52,855 INFO L140 encePairwiseOnDemand]: 73/86 looper letters, 49 selfloop transitions, 18 changer transitions 0/103 dead transitions. [2023-11-10 12:25:52,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 103 transitions, 432 flow [2023-11-10 12:25:52,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-10 12:25:52,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-10 12:25:52,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 621 transitions. [2023-11-10 12:25:52,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6017441860465116 [2023-11-10 12:25:52,857 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 621 transitions. [2023-11-10 12:25:52,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 621 transitions. [2023-11-10 12:25:52,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:25:52,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 621 transitions. [2023-11-10 12:25:52,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 51.75) internal successors, (621), 12 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:25:52,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 86.0) internal successors, (1118), 13 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:25:52,862 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 86.0) internal successors, (1118), 13 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:25:52,862 INFO L175 Difference]: Start difference. First operand has 83 places, 75 transitions, 203 flow. Second operand 12 states and 621 transitions. [2023-11-10 12:25:52,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 103 transitions, 432 flow [2023-11-10 12:25:52,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 103 transitions, 421 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-10 12:25:52,866 INFO L231 Difference]: Finished difference. Result has 96 places, 84 transitions, 316 flow [2023-11-10 12:25:52,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=316, PETRI_PLACES=96, PETRI_TRANSITIONS=84} [2023-11-10 12:25:52,867 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 20 predicate places. [2023-11-10 12:25:52,868 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 84 transitions, 316 flow [2023-11-10 12:25:52,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 50.285714285714285) internal successors, (352), 7 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:25:52,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:25:52,868 INFO L208 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] [2023-11-10 12:25:52,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-10 12:25:53,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:25:53,075 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:25:53,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:25:53,076 INFO L85 PathProgramCache]: Analyzing trace with hash 2348597, now seen corresponding path program 2 times [2023-11-10 12:25:53,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:25:53,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874796860] [2023-11-10 12:25:53,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:25:53,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:25:53,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:25:53,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:25:53,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:25:53,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874796860] [2023-11-10 12:25:53,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874796860] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:25:53,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088843059] [2023-11-10 12:25:53,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-10 12:25:53,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:25:53,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:25:53,403 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) [2023-11-10 12:25:53,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-10 12:25:53,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-10 12:25:53,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:25:53,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-10 12:25:53,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:25:53,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:25:53,657 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-10 12:25:53,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088843059] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:25:53,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-10 12:25:53,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2023-11-10 12:25:53,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965709589] [2023-11-10 12:25:53,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:25:53,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-10 12:25:53,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:25:53,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-10 12:25:53,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-10 12:25:53,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2023-11-10 12:25:53,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 84 transitions, 316 flow. Second operand has 8 states, 8 states have (on average 49.75) internal successors, (398), 8 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:25:53,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:25:53,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2023-11-10 12:25:53,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:25:53,866 INFO L124 PetriNetUnfolderBase]: 104/288 cut-off events. [2023-11-10 12:25:53,867 INFO L125 PetriNetUnfolderBase]: For 391/391 co-relation queries the response was YES. [2023-11-10 12:25:53,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 826 conditions, 288 events. 104/288 cut-off events. For 391/391 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1002 event pairs, 33 based on Foata normal form. 6/288 useless extension candidates. Maximal degree in co-relation 536. Up to 106 conditions per place. [2023-11-10 12:25:53,870 INFO L140 encePairwiseOnDemand]: 73/86 looper letters, 57 selfloop transitions, 19 changer transitions 0/112 dead transitions. [2023-11-10 12:25:53,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 112 transitions, 558 flow [2023-11-10 12:25:53,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-10 12:25:53,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-10 12:25:53,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 671 transitions. [2023-11-10 12:25:53,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6001788908765653 [2023-11-10 12:25:53,872 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 671 transitions. [2023-11-10 12:25:53,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 671 transitions. [2023-11-10 12:25:53,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:25:53,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 671 transitions. [2023-11-10 12:25:53,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 51.61538461538461) internal successors, (671), 13 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:25:53,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 86.0) internal successors, (1204), 14 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:25:53,875 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 86.0) internal successors, (1204), 14 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:25:53,876 INFO L175 Difference]: Start difference. First operand has 96 places, 84 transitions, 316 flow. Second operand 13 states and 671 transitions. [2023-11-10 12:25:53,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 112 transitions, 558 flow [2023-11-10 12:25:53,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 112 transitions, 544 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-10 12:25:53,882 INFO L231 Difference]: Finished difference. Result has 104 places, 85 transitions, 351 flow [2023-11-10 12:25:53,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=351, PETRI_PLACES=104, PETRI_TRANSITIONS=85} [2023-11-10 12:25:53,884 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 28 predicate places. [2023-11-10 12:25:53,884 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 85 transitions, 351 flow [2023-11-10 12:25:53,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 49.75) internal successors, (398), 8 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:25:53,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:25:53,885 INFO L208 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] [2023-11-10 12:25:53,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-10 12:25:54,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-10 12:25:54,092 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:25:54,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:25:54,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1484627107, now seen corresponding path program 3 times [2023-11-10 12:25:54,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:25:54,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531737883] [2023-11-10 12:25:54,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:25:54,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:25:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:25:54,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:25:54,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:25:54,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531737883] [2023-11-10 12:25:54,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531737883] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:25:54,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:25:54,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-10 12:25:54,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024786129] [2023-11-10 12:25:54,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:25:54,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-10 12:25:54,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:25:54,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-10 12:25:54,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-10 12:25:54,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 86 [2023-11-10 12:25:54,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 85 transitions, 351 flow. Second operand has 5 states, 5 states have (on average 65.2) internal successors, (326), 5 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:25:54,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:25:54,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 86 [2023-11-10 12:25:54,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:25:54,344 INFO L124 PetriNetUnfolderBase]: 155/398 cut-off events. [2023-11-10 12:25:54,344 INFO L125 PetriNetUnfolderBase]: For 685/685 co-relation queries the response was YES. [2023-11-10 12:25:54,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1233 conditions, 398 events. 155/398 cut-off events. For 685/685 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1655 event pairs, 17 based on Foata normal form. 7/399 useless extension candidates. Maximal degree in co-relation 1075. Up to 70 conditions per place. [2023-11-10 12:25:54,347 INFO L140 encePairwiseOnDemand]: 79/86 looper letters, 50 selfloop transitions, 28 changer transitions 0/128 dead transitions. [2023-11-10 12:25:54,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 128 transitions, 779 flow [2023-11-10 12:25:54,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-10 12:25:54,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-10 12:25:54,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 482 transitions. [2023-11-10 12:25:54,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8006644518272426 [2023-11-10 12:25:54,349 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 482 transitions. [2023-11-10 12:25:54,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 482 transitions. [2023-11-10 12:25:54,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:25:54,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 482 transitions. [2023-11-10 12:25:54,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 68.85714285714286) internal successors, (482), 7 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:25:54,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 86.0) internal successors, (688), 8 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:25:54,351 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 86.0) internal successors, (688), 8 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:25:54,351 INFO L175 Difference]: Start difference. First operand has 104 places, 85 transitions, 351 flow. Second operand 7 states and 482 transitions. [2023-11-10 12:25:54,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 128 transitions, 779 flow [2023-11-10 12:25:54,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 128 transitions, 721 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-11-10 12:25:54,356 INFO L231 Difference]: Finished difference. Result has 103 places, 102 transitions, 535 flow [2023-11-10 12:25:54,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=535, PETRI_PLACES=103, PETRI_TRANSITIONS=102} [2023-11-10 12:25:54,358 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 27 predicate places. [2023-11-10 12:25:54,358 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 102 transitions, 535 flow [2023-11-10 12:25:54,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.2) internal successors, (326), 5 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:25:54,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:25:54,359 INFO L208 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] [2023-11-10 12:25:54,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-10 12:25:54,359 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:25:54,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:25:54,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1437563515, now seen corresponding path program 4 times [2023-11-10 12:25:54,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:25:54,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420153674] [2023-11-10 12:25:54,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:25:54,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:25:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:25:55,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:25:55,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:25:55,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420153674] [2023-11-10 12:25:55,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420153674] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:25:55,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321234468] [2023-11-10 12:25:55,013 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-10 12:25:55,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:25:55,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:25:55,031 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) [2023-11-10 12:25:55,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-10 12:25:55,106 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-10 12:25:55,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:25:55,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-10 12:25:55,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:25:55,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:25:55,697 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:25:56,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:25:56,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321234468] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-10 12:25:56,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-10 12:25:56,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15, 15] total 33 [2023-11-10 12:25:56,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787048742] [2023-11-10 12:25:56,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:25:56,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-10 12:25:56,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:25:56,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-10 12:25:56,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=827, Unknown=0, NotChecked=0, Total=1056 [2023-11-10 12:25:56,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 86 [2023-11-10 12:25:56,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 102 transitions, 535 flow. Second operand has 14 states, 14 states have (on average 45.357142857142854) internal successors, (635), 14 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:25:56,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:25:56,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 86 [2023-11-10 12:25:56,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:25:57,476 INFO L124 PetriNetUnfolderBase]: 482/1278 cut-off events. [2023-11-10 12:25:57,476 INFO L125 PetriNetUnfolderBase]: For 3787/3787 co-relation queries the response was YES. [2023-11-10 12:25:57,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4504 conditions, 1278 events. 482/1278 cut-off events. For 3787/3787 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8155 event pairs, 32 based on Foata normal form. 2/1271 useless extension candidates. Maximal degree in co-relation 2750. Up to 221 conditions per place. [2023-11-10 12:25:57,487 INFO L140 encePairwiseOnDemand]: 70/86 looper letters, 213 selfloop transitions, 107 changer transitions 30/383 dead transitions. [2023-11-10 12:25:57,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 383 transitions, 3307 flow [2023-11-10 12:25:57,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-10 12:25:57,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-11-10 12:25:57,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1812 transitions. [2023-11-10 12:25:57,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694531741043369 [2023-11-10 12:25:57,492 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1812 transitions. [2023-11-10 12:25:57,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1812 transitions. [2023-11-10 12:25:57,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:25:57,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1812 transitions. [2023-11-10 12:25:57,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 48.972972972972975) internal successors, (1812), 37 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:25:57,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 86.0) internal successors, (3268), 38 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:25:57,502 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 86.0) internal successors, (3268), 38 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:25:57,502 INFO L175 Difference]: Start difference. First operand has 103 places, 102 transitions, 535 flow. Second operand 37 states and 1812 transitions. [2023-11-10 12:25:57,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 383 transitions, 3307 flow [2023-11-10 12:25:57,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 383 transitions, 3279 flow, removed 14 selfloop flow, removed 0 redundant places. [2023-11-10 12:25:57,514 INFO L231 Difference]: Finished difference. Result has 161 places, 202 transitions, 1675 flow [2023-11-10 12:25:57,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1675, PETRI_PLACES=161, PETRI_TRANSITIONS=202} [2023-11-10 12:25:57,515 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 85 predicate places. [2023-11-10 12:25:57,515 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 202 transitions, 1675 flow [2023-11-10 12:25:57,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 45.357142857142854) internal successors, (635), 14 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:25:57,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:25:57,515 INFO L208 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] [2023-11-10 12:25:57,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-10 12:25:57,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:25:57,720 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:25:57,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:25:57,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1372429200, now seen corresponding path program 1 times [2023-11-10 12:25:57,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:25:57,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796920219] [2023-11-10 12:25:57,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:25:57,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:25:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:25:58,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:25:58,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:25:58,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796920219] [2023-11-10 12:25:58,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796920219] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:25:58,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137091181] [2023-11-10 12:25:58,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:25:58,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:25:58,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:25:58,326 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) [2023-11-10 12:25:58,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-10 12:25:58,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:25:58,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-10 12:25:58,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:25:59,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:25:59,129 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:26:00,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:26:00,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137091181] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:26:00,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:26:00,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 16] total 36 [2023-11-10 12:26:00,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421584750] [2023-11-10 12:26:00,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:26:00,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-10 12:26:00,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:26:00,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-10 12:26:00,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1025, Unknown=0, NotChecked=0, Total=1260 [2023-11-10 12:26:00,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 86 [2023-11-10 12:26:00,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 202 transitions, 1675 flow. Second operand has 36 states, 36 states have (on average 47.25) internal successors, (1701), 36 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:26:00,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:26:00,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 86 [2023-11-10 12:26:00,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:26:07,182 INFO L124 PetriNetUnfolderBase]: 895/2611 cut-off events. [2023-11-10 12:26:07,182 INFO L125 PetriNetUnfolderBase]: For 15680/15745 co-relation queries the response was YES. [2023-11-10 12:26:07,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11458 conditions, 2611 events. 895/2611 cut-off events. For 15680/15745 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 20934 event pairs, 9 based on Foata normal form. 30/2637 useless extension candidates. Maximal degree in co-relation 11344. Up to 422 conditions per place. [2023-11-10 12:26:07,204 INFO L140 encePairwiseOnDemand]: 66/86 looper letters, 304 selfloop transitions, 275 changer transitions 121/747 dead transitions. [2023-11-10 12:26:07,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 747 transitions, 8192 flow [2023-11-10 12:26:07,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-11-10 12:26:07,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2023-11-10 12:26:07,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 4837 transitions. [2023-11-10 12:26:07,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5681230913789054 [2023-11-10 12:26:07,213 INFO L72 ComplementDD]: Start complementDD. Operand 99 states and 4837 transitions. [2023-11-10 12:26:07,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 4837 transitions. [2023-11-10 12:26:07,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:26:07,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 99 states and 4837 transitions. [2023-11-10 12:26:07,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 100 states, 99 states have (on average 48.85858585858586) internal successors, (4837), 99 states have internal predecessors, (4837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:26:07,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 100 states, 100 states have (on average 86.0) internal successors, (8600), 100 states have internal predecessors, (8600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:26:07,234 INFO L81 ComplementDD]: Finished complementDD. Result has 100 states, 100 states have (on average 86.0) internal successors, (8600), 100 states have internal predecessors, (8600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:26:07,235 INFO L175 Difference]: Start difference. First operand has 161 places, 202 transitions, 1675 flow. Second operand 99 states and 4837 transitions. [2023-11-10 12:26:07,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 747 transitions, 8192 flow [2023-11-10 12:26:07,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 747 transitions, 7716 flow, removed 227 selfloop flow, removed 10 redundant places. [2023-11-10 12:26:07,284 INFO L231 Difference]: Finished difference. Result has 301 places, 437 transitions, 5170 flow [2023-11-10 12:26:07,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1543, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=5170, PETRI_PLACES=301, PETRI_TRANSITIONS=437} [2023-11-10 12:26:07,285 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 225 predicate places. [2023-11-10 12:26:07,285 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 437 transitions, 5170 flow [2023-11-10 12:26:07,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 47.25) internal successors, (1701), 36 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:26:07,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:26:07,286 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-11-10 12:26:07,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-10 12:26:07,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:26:07,491 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:26:07,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:26:07,492 INFO L85 PathProgramCache]: Analyzing trace with hash 471507121, now seen corresponding path program 2 times [2023-11-10 12:26:07,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:26:07,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862588226] [2023-11-10 12:26:07,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:26:07,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:26:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:26:08,791 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:26:08,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:26:08,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862588226] [2023-11-10 12:26:08,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862588226] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:26:08,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143228344] [2023-11-10 12:26:08,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-10 12:26:08,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:26:08,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:26:08,796 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) [2023-11-10 12:26:08,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-10 12:26:08,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-10 12:26:08,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:26:08,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-10 12:26:08,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:26:09,539 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:26:09,540 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:26:12,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:26:12,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143228344] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:26:12,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:26:12,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 17] total 36 [2023-11-10 12:26:12,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302177146] [2023-11-10 12:26:12,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:26:12,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-10 12:26:12,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:26:12,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-10 12:26:12,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1050, Unknown=0, NotChecked=0, Total=1260 [2023-11-10 12:26:12,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 86 [2023-11-10 12:26:12,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 437 transitions, 5170 flow. Second operand has 36 states, 36 states have (on average 45.55555555555556) internal successors, (1640), 36 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:26:12,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:26:12,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 86 [2023-11-10 12:26:12,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:26:25,121 INFO L124 PetriNetUnfolderBase]: 1844/4702 cut-off events. [2023-11-10 12:26:25,121 INFO L125 PetriNetUnfolderBase]: For 43003/43003 co-relation queries the response was YES. [2023-11-10 12:26:25,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24815 conditions, 4702 events. 1844/4702 cut-off events. For 43003/43003 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 39869 event pairs, 81 based on Foata normal form. 9/4701 useless extension candidates. Maximal degree in co-relation 24599. Up to 1066 conditions per place. [2023-11-10 12:26:25,179 INFO L140 encePairwiseOnDemand]: 63/86 looper letters, 594 selfloop transitions, 517 changer transitions 73/1217 dead transitions. [2023-11-10 12:26:25,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 1217 transitions, 16967 flow [2023-11-10 12:26:25,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2023-11-10 12:26:25,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2023-11-10 12:26:25,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 5187 transitions. [2023-11-10 12:26:25,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5483086680761099 [2023-11-10 12:26:25,185 INFO L72 ComplementDD]: Start complementDD. Operand 110 states and 5187 transitions. [2023-11-10 12:26:25,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 110 states and 5187 transitions. [2023-11-10 12:26:25,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:26:25,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 110 states and 5187 transitions. [2023-11-10 12:26:25,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 111 states, 110 states have (on average 47.154545454545456) internal successors, (5187), 110 states have internal predecessors, (5187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:26:25,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 111 states, 111 states have (on average 86.0) internal successors, (9546), 111 states have internal predecessors, (9546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:26:25,246 INFO L81 ComplementDD]: Finished complementDD. Result has 111 states, 111 states have (on average 86.0) internal successors, (9546), 111 states have internal predecessors, (9546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:26:25,246 INFO L175 Difference]: Start difference. First operand has 301 places, 437 transitions, 5170 flow. Second operand 110 states and 5187 transitions. [2023-11-10 12:26:25,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 1217 transitions, 16967 flow [2023-11-10 12:26:25,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 1217 transitions, 15194 flow, removed 864 selfloop flow, removed 51 redundant places. [2023-11-10 12:26:25,474 INFO L231 Difference]: Finished difference. Result has 375 places, 837 transitions, 11622 flow [2023-11-10 12:26:25,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=4661, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=110, PETRI_FLOW=11622, PETRI_PLACES=375, PETRI_TRANSITIONS=837} [2023-11-10 12:26:25,475 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 299 predicate places. [2023-11-10 12:26:25,475 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 837 transitions, 11622 flow [2023-11-10 12:26:25,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 45.55555555555556) internal successors, (1640), 36 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:26:25,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:26:25,476 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-11-10 12:26:25,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-10 12:26:25,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:26:25,680 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:26:25,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:26:25,680 INFO L85 PathProgramCache]: Analyzing trace with hash -950698881, now seen corresponding path program 3 times [2023-11-10 12:26:25,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:26:25,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471041623] [2023-11-10 12:26:25,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:26:25,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:26:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:26:27,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:26:27,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:26:27,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471041623] [2023-11-10 12:26:27,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471041623] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:26:27,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890047564] [2023-11-10 12:26:27,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-10 12:26:27,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:26:27,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:26:27,681 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) [2023-11-10 12:26:27,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-10 12:26:27,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-10 12:26:27,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:26:27,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-10 12:26:27,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:26:28,889 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:26:28,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:26:33,216 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:26:33,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890047564] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:26:33,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:26:33,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 38 [2023-11-10 12:26:33,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191297260] [2023-11-10 12:26:33,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:26:33,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-10 12:26:33,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:26:33,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-10 12:26:33,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1164, Unknown=0, NotChecked=0, Total=1406 [2023-11-10 12:26:33,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 86 [2023-11-10 12:26:33,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 837 transitions, 11622 flow. Second operand has 38 states, 38 states have (on average 45.421052631578945) internal successors, (1726), 38 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:26:33,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:26:33,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 86 [2023-11-10 12:26:33,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:26:50,170 INFO L124 PetriNetUnfolderBase]: 2320/5894 cut-off events. [2023-11-10 12:26:50,170 INFO L125 PetriNetUnfolderBase]: For 62466/62466 co-relation queries the response was YES. [2023-11-10 12:26:50,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35306 conditions, 5894 events. 2320/5894 cut-off events. For 62466/62466 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 52456 event pairs, 95 based on Foata normal form. 10/5896 useless extension candidates. Maximal degree in co-relation 35153. Up to 1849 conditions per place. [2023-11-10 12:26:50,239 INFO L140 encePairwiseOnDemand]: 63/86 looper letters, 687 selfloop transitions, 626 changer transitions 71/1417 dead transitions. [2023-11-10 12:26:50,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 1417 transitions, 22035 flow [2023-11-10 12:26:50,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-11-10 12:26:50,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2023-11-10 12:26:50,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 4179 transitions. [2023-11-10 12:26:50,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5459890253462242 [2023-11-10 12:26:50,247 INFO L72 ComplementDD]: Start complementDD. Operand 89 states and 4179 transitions. [2023-11-10 12:26:50,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 4179 transitions. [2023-11-10 12:26:50,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:26:50,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 89 states and 4179 transitions. [2023-11-10 12:26:50,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 90 states, 89 states have (on average 46.95505617977528) internal successors, (4179), 89 states have internal predecessors, (4179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:26:50,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 90 states, 90 states have (on average 86.0) internal successors, (7740), 90 states have internal predecessors, (7740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:26:50,281 INFO L81 ComplementDD]: Finished complementDD. Result has 90 states, 90 states have (on average 86.0) internal successors, (7740), 90 states have internal predecessors, (7740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:26:50,281 INFO L175 Difference]: Start difference. First operand has 375 places, 837 transitions, 11622 flow. Second operand 89 states and 4179 transitions. [2023-11-10 12:26:50,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 1417 transitions, 22035 flow [2023-11-10 12:26:50,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 1417 transitions, 20894 flow, removed 505 selfloop flow, removed 35 redundant places. [2023-11-10 12:26:50,794 INFO L231 Difference]: Finished difference. Result has 452 places, 1131 transitions, 17349 flow [2023-11-10 12:26:50,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=10816, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=837, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=377, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=89, PETRI_FLOW=17349, PETRI_PLACES=452, PETRI_TRANSITIONS=1131} [2023-11-10 12:26:50,796 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 376 predicate places. [2023-11-10 12:26:50,796 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 1131 transitions, 17349 flow [2023-11-10 12:26:50,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 45.421052631578945) internal successors, (1726), 38 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:26:50,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:26:50,797 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-11-10 12:26:50,802 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-10 12:26:51,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:26:51,003 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:26:51,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:26:51,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1032273853, now seen corresponding path program 5 times [2023-11-10 12:26:51,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:26:51,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56734882] [2023-11-10 12:26:51,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:26:51,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:26:51,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:26:51,678 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-10 12:26:51,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:26:51,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56734882] [2023-11-10 12:26:51,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56734882] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:26:51,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183924106] [2023-11-10 12:26:51,679 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-10 12:26:51,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:26:51,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:26:51,680 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) [2023-11-10 12:26:51,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-10 12:26:51,786 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-10 12:26:51,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:26:51,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-10 12:26:51,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:26:52,293 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:26:52,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:26:52,794 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:26:52,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183924106] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:26:52,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:26:52,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 16] total 37 [2023-11-10 12:26:52,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474803653] [2023-11-10 12:26:52,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:26:52,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-10 12:26:52,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:26:52,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-10 12:26:52,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1103, Unknown=0, NotChecked=0, Total=1332 [2023-11-10 12:26:52,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 86 [2023-11-10 12:26:52,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 1131 transitions, 17349 flow. Second operand has 37 states, 37 states have (on average 45.4054054054054) internal successors, (1680), 37 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:26:52,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:26:52,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 86 [2023-11-10 12:26:52,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:27:07,112 INFO L124 PetriNetUnfolderBase]: 3185/8014 cut-off events. [2023-11-10 12:27:07,112 INFO L125 PetriNetUnfolderBase]: For 127662/127662 co-relation queries the response was YES. [2023-11-10 12:27:07,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54333 conditions, 8014 events. 3185/8014 cut-off events. For 127662/127662 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 74259 event pairs, 81 based on Foata normal form. 14/8023 useless extension candidates. Maximal degree in co-relation 54146. Up to 1300 conditions per place. [2023-11-10 12:27:07,217 INFO L140 encePairwiseOnDemand]: 66/86 looper letters, 623 selfloop transitions, 1281 changer transitions 86/2023 dead transitions. [2023-11-10 12:27:07,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 2023 transitions, 34139 flow [2023-11-10 12:27:07,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2023-11-10 12:27:07,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2023-11-10 12:27:07,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 5672 transitions. [2023-11-10 12:27:07,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5450701518354796 [2023-11-10 12:27:07,223 INFO L72 ComplementDD]: Start complementDD. Operand 121 states and 5672 transitions. [2023-11-10 12:27:07,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 121 states and 5672 transitions. [2023-11-10 12:27:07,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:27:07,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 121 states and 5672 transitions. [2023-11-10 12:27:07,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 122 states, 121 states have (on average 46.87603305785124) internal successors, (5672), 121 states have internal predecessors, (5672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:27:07,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 122 states, 122 states have (on average 86.0) internal successors, (10492), 122 states have internal predecessors, (10492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:27:07,241 INFO L81 ComplementDD]: Finished complementDD. Result has 122 states, 122 states have (on average 86.0) internal successors, (10492), 122 states have internal predecessors, (10492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:27:07,241 INFO L175 Difference]: Start difference. First operand has 452 places, 1131 transitions, 17349 flow. Second operand 121 states and 5672 transitions. [2023-11-10 12:27:07,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 555 places, 2023 transitions, 34139 flow [2023-11-10 12:27:08,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 2023 transitions, 32781 flow, removed 539 selfloop flow, removed 49 redundant places. [2023-11-10 12:27:08,479 INFO L231 Difference]: Finished difference. Result has 577 places, 1630 transitions, 29313 flow [2023-11-10 12:27:08,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=16527, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=811, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=121, PETRI_FLOW=29313, PETRI_PLACES=577, PETRI_TRANSITIONS=1630} [2023-11-10 12:27:08,480 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 501 predicate places. [2023-11-10 12:27:08,481 INFO L495 AbstractCegarLoop]: Abstraction has has 577 places, 1630 transitions, 29313 flow [2023-11-10 12:27:08,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 45.4054054054054) internal successors, (1680), 37 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:27:08,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:27:08,481 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-11-10 12:27:08,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-10 12:27:08,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:27:08,686 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:27:08,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:27:08,686 INFO L85 PathProgramCache]: Analyzing trace with hash 81498238, now seen corresponding path program 4 times [2023-11-10 12:27:08,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:27:08,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326832469] [2023-11-10 12:27:08,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:27:08,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:27:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:27:11,124 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:27:11,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:27:11,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326832469] [2023-11-10 12:27:11,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326832469] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:27:11,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444782113] [2023-11-10 12:27:11,124 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-10 12:27:11,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:27:11,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:27:11,126 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) [2023-11-10 12:27:11,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-10 12:27:11,285 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-10 12:27:11,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:27:11,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-10 12:27:11,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:27:12,376 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:27:12,376 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:27:16,023 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:27:16,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444782113] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:27:16,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:27:16,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18, 18] total 38 [2023-11-10 12:27:16,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388382782] [2023-11-10 12:27:16,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:27:16,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-10 12:27:16,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:27:16,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-10 12:27:16,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=1167, Unknown=0, NotChecked=0, Total=1406 [2023-11-10 12:27:16,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 86 [2023-11-10 12:27:16,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 1630 transitions, 29313 flow. Second operand has 38 states, 38 states have (on average 47.526315789473685) internal successors, (1806), 38 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:27:16,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:27:16,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 86 [2023-11-10 12:27:16,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:27:42,279 INFO L124 PetriNetUnfolderBase]: 3233/8720 cut-off events. [2023-11-10 12:27:42,279 INFO L125 PetriNetUnfolderBase]: For 255159/255302 co-relation queries the response was YES. [2023-11-10 12:27:42,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77453 conditions, 8720 events. 3233/8720 cut-off events. For 255159/255302 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 85198 event pairs, 37 based on Foata normal form. 77/8793 useless extension candidates. Maximal degree in co-relation 77149. Up to 2424 conditions per place. [2023-11-10 12:27:42,440 INFO L140 encePairwiseOnDemand]: 65/86 looper letters, 1073 selfloop transitions, 866 changer transitions 94/2255 dead transitions. [2023-11-10 12:27:42,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 650 places, 2255 transitions, 45021 flow [2023-11-10 12:27:42,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2023-11-10 12:27:42,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2023-11-10 12:27:42,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 4490 transitions. [2023-11-10 12:27:42,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5674924165824065 [2023-11-10 12:27:42,445 INFO L72 ComplementDD]: Start complementDD. Operand 92 states and 4490 transitions. [2023-11-10 12:27:42,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 92 states and 4490 transitions. [2023-11-10 12:27:42,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:27:42,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 92 states and 4490 transitions. [2023-11-10 12:27:42,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 93 states, 92 states have (on average 48.80434782608695) internal successors, (4490), 92 states have internal predecessors, (4490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:27:42,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 93 states, 93 states have (on average 86.0) internal successors, (7998), 93 states have internal predecessors, (7998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:27:42,456 INFO L81 ComplementDD]: Finished complementDD. Result has 93 states, 93 states have (on average 86.0) internal successors, (7998), 93 states have internal predecessors, (7998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:27:42,456 INFO L175 Difference]: Start difference. First operand has 577 places, 1630 transitions, 29313 flow. Second operand 92 states and 4490 transitions. [2023-11-10 12:27:42,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 650 places, 2255 transitions, 45021 flow [2023-11-10 12:27:45,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 2255 transitions, 42434 flow, removed 1143 selfloop flow, removed 39 redundant places. [2023-11-10 12:27:45,149 INFO L231 Difference]: Finished difference. Result has 655 places, 1915 transitions, 36883 flow [2023-11-10 12:27:45,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=27717, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=606, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=904, PETRI_DIFFERENCE_SUBTRAHEND_STATES=92, PETRI_FLOW=36883, PETRI_PLACES=655, PETRI_TRANSITIONS=1915} [2023-11-10 12:27:45,152 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 579 predicate places. [2023-11-10 12:27:45,152 INFO L495 AbstractCegarLoop]: Abstraction has has 655 places, 1915 transitions, 36883 flow [2023-11-10 12:27:45,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 47.526315789473685) internal successors, (1806), 38 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:27:45,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:27:45,152 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-11-10 12:27:45,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-10 12:27:45,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-10 12:27:45,357 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:27:45,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:27:45,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1098130048, now seen corresponding path program 5 times [2023-11-10 12:27:45,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:27:45,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712799492] [2023-11-10 12:27:45,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:27:45,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:27:45,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:27:46,971 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:27:46,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:27:46,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712799492] [2023-11-10 12:27:46,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712799492] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:27:46,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635202837] [2023-11-10 12:27:46,971 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-10 12:27:46,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:27:46,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:27:46,972 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) [2023-11-10 12:27:46,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-10 12:27:47,084 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-10 12:27:47,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:27:47,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-10 12:27:47,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:27:48,386 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:27:48,387 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:27:51,109 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:27:51,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635202837] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:27:51,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:27:51,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22, 20] total 48 [2023-11-10 12:27:51,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859278595] [2023-11-10 12:27:51,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:27:51,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-10 12:27:51,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:27:51,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-10 12:27:51,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=1886, Unknown=0, NotChecked=0, Total=2256 [2023-11-10 12:27:51,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 86 [2023-11-10 12:27:51,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 655 places, 1915 transitions, 36883 flow. Second operand has 48 states, 48 states have (on average 44.958333333333336) internal successors, (2158), 48 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:27:51,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:27:51,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 86 [2023-11-10 12:27:51,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:28:48,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-10 12:29:36,166 INFO L124 PetriNetUnfolderBase]: 4830/12033 cut-off events. [2023-11-10 12:29:36,166 INFO L125 PetriNetUnfolderBase]: For 361210/361220 co-relation queries the response was YES. [2023-11-10 12:29:36,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114555 conditions, 12033 events. 4830/12033 cut-off events. For 361210/361220 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 118257 event pairs, 56 based on Foata normal form. 23/12052 useless extension candidates. Maximal degree in co-relation 114151. Up to 2920 conditions per place. [2023-11-10 12:29:36,399 INFO L140 encePairwiseOnDemand]: 66/86 looper letters, 1346 selfloop transitions, 2285 changer transitions 137/3801 dead transitions. [2023-11-10 12:29:36,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 833 places, 3801 transitions, 83168 flow [2023-11-10 12:29:36,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2023-11-10 12:29:36,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2023-11-10 12:29:36,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 9746 transitions. [2023-11-10 12:29:36,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5396456256921374 [2023-11-10 12:29:36,406 INFO L72 ComplementDD]: Start complementDD. Operand 210 states and 9746 transitions. [2023-11-10 12:29:36,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 210 states and 9746 transitions. [2023-11-10 12:29:36,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:29:36,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 210 states and 9746 transitions. [2023-11-10 12:29:36,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 211 states, 210 states have (on average 46.40952380952381) internal successors, (9746), 210 states have internal predecessors, (9746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:29:36,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 211 states, 211 states have (on average 86.0) internal successors, (18146), 211 states have internal predecessors, (18146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:29:36,446 INFO L81 ComplementDD]: Finished complementDD. Result has 211 states, 211 states have (on average 86.0) internal successors, (18146), 211 states have internal predecessors, (18146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:29:36,446 INFO L175 Difference]: Start difference. First operand has 655 places, 1915 transitions, 36883 flow. Second operand 210 states and 9746 transitions. [2023-11-10 12:29:36,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 833 places, 3801 transitions, 83168 flow [2023-11-10 12:29:41,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 779 places, 3801 transitions, 79947 flow, removed 1432 selfloop flow, removed 54 redundant places. [2023-11-10 12:29:41,079 INFO L231 Difference]: Finished difference. Result has 872 places, 3213 transitions, 70965 flow [2023-11-10 12:29:41,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=35773, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1915, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1065, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=675, PETRI_DIFFERENCE_SUBTRAHEND_STATES=210, PETRI_FLOW=70965, PETRI_PLACES=872, PETRI_TRANSITIONS=3213} [2023-11-10 12:29:41,082 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 796 predicate places. [2023-11-10 12:29:41,082 INFO L495 AbstractCegarLoop]: Abstraction has has 872 places, 3213 transitions, 70965 flow [2023-11-10 12:29:41,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 44.958333333333336) internal successors, (2158), 48 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:29:41,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:29:41,083 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-11-10 12:29:41,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-10 12:29:41,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:29:41,288 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:29:41,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:29:41,289 INFO L85 PathProgramCache]: Analyzing trace with hash 904282582, now seen corresponding path program 6 times [2023-11-10 12:29:41,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:29:41,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036775055] [2023-11-10 12:29:41,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:29:41,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:29:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:29:42,421 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:29:42,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:29:42,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036775055] [2023-11-10 12:29:42,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036775055] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:29:42,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361376950] [2023-11-10 12:29:42,422 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-10 12:29:42,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:29:42,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:29:42,547 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:29:42,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-10 12:29:42,789 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-11-10 12:29:42,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:29:42,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-10 12:29:42,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:29:44,290 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:29:44,291 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:29:46,377 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:29:46,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361376950] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:29:46,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:29:46,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 19] total 47 [2023-11-10 12:29:46,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868170435] [2023-11-10 12:29:46,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:29:46,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-11-10 12:29:46,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:29:46,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-11-10 12:29:46,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=1858, Unknown=0, NotChecked=0, Total=2162 [2023-11-10 12:29:46,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 86 [2023-11-10 12:29:46,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 872 places, 3213 transitions, 70965 flow. Second operand has 47 states, 47 states have (on average 44.95744680851064) internal successors, (2113), 47 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:29:46,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:29:46,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 86 [2023-11-10 12:29:46,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:31:21,514 INFO L124 PetriNetUnfolderBase]: 6548/16246 cut-off events. [2023-11-10 12:31:21,514 INFO L125 PetriNetUnfolderBase]: For 616585/616595 co-relation queries the response was YES. [2023-11-10 12:31:21,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178389 conditions, 16246 events. 6548/16246 cut-off events. For 616585/616595 co-relation queries the response was YES. Maximal size of possible extension queue 871. Compared 167686 event pairs, 55 based on Foata normal form. 26/16267 useless extension candidates. Maximal degree in co-relation 178035. Up to 3756 conditions per place. [2023-11-10 12:31:21,874 INFO L140 encePairwiseOnDemand]: 66/86 looper letters, 1903 selfloop transitions, 3898 changer transitions 120/5954 dead transitions. [2023-11-10 12:31:21,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1059 places, 5954 transitions, 148486 flow [2023-11-10 12:31:21,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 236 states. [2023-11-10 12:31:21,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2023-11-10 12:31:21,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 10961 transitions. [2023-11-10 12:31:21,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5400571541190382 [2023-11-10 12:31:21,882 INFO L72 ComplementDD]: Start complementDD. Operand 236 states and 10961 transitions. [2023-11-10 12:31:21,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 236 states and 10961 transitions. [2023-11-10 12:31:21,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:31:21,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 236 states and 10961 transitions. [2023-11-10 12:31:21,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 237 states, 236 states have (on average 46.44491525423729) internal successors, (10961), 236 states have internal predecessors, (10961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:31:21,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 237 states, 237 states have (on average 86.0) internal successors, (20382), 237 states have internal predecessors, (20382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:31:21,909 INFO L81 ComplementDD]: Finished complementDD. Result has 237 states, 237 states have (on average 86.0) internal successors, (20382), 237 states have internal predecessors, (20382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:31:21,909 INFO L175 Difference]: Start difference. First operand has 872 places, 3213 transitions, 70965 flow. Second operand 236 states and 10961 transitions. [2023-11-10 12:31:21,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1059 places, 5954 transitions, 148486 flow [2023-11-10 12:31:35,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 993 places, 5954 transitions, 138940 flow, removed 4567 selfloop flow, removed 66 redundant places. [2023-11-10 12:31:35,991 INFO L231 Difference]: Finished difference. Result has 1087 places, 5361 transitions, 131707 flow [2023-11-10 12:31:35,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=67456, PETRI_DIFFERENCE_MINUEND_PLACES=758, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2010, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=866, PETRI_DIFFERENCE_SUBTRAHEND_STATES=236, PETRI_FLOW=131707, PETRI_PLACES=1087, PETRI_TRANSITIONS=5361} [2023-11-10 12:31:35,995 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 1011 predicate places. [2023-11-10 12:31:35,995 INFO L495 AbstractCegarLoop]: Abstraction has has 1087 places, 5361 transitions, 131707 flow [2023-11-10 12:31:35,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 44.95744680851064) internal successors, (2113), 47 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:31:35,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:31:35,996 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-11-10 12:31:36,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-10 12:31:36,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-10 12:31:36,201 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:31:36,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:31:36,201 INFO L85 PathProgramCache]: Analyzing trace with hash -721548426, now seen corresponding path program 7 times [2023-11-10 12:31:36,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:31:36,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647218501] [2023-11-10 12:31:36,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:31:36,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:31:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:31:37,473 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:31:37,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:31:37,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647218501] [2023-11-10 12:31:37,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647218501] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:31:37,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157053352] [2023-11-10 12:31:37,474 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-10 12:31:37,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:31:37,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:31:37,475 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:31:37,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-10 12:31:37,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:31:37,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-10 12:31:37,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:31:38,995 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:31:38,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:31:42,713 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:31:42,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157053352] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:31:42,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:31:42,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 19] total 47 [2023-11-10 12:31:42,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635136143] [2023-11-10 12:31:42,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:31:42,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-11-10 12:31:42,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:31:42,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-11-10 12:31:42,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=1833, Unknown=0, NotChecked=0, Total=2162 [2023-11-10 12:31:42,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 86 [2023-11-10 12:31:42,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1087 places, 5361 transitions, 131707 flow. Second operand has 47 states, 47 states have (on average 45.170212765957444) internal successors, (2123), 47 states have internal predecessors, (2123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:31:42,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:31:42,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 86 [2023-11-10 12:31:42,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:31:45,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-10 12:31:47,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-10 12:31:52,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-10 12:32:56,708 WARN L293 SmtUtils]: Spent 12.03s on a formula simplification. DAG size of input: 130 DAG size of output: 79 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-10 12:33:08,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-10 12:33:46,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-10 12:33:51,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-10 12:34:03,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2023-11-10 12:34:50,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2023-11-10 12:34:50,359 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-10 12:34:50,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-10 12:34:50,367 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-10 12:34:50,367 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 [2023-11-10 12:34:50,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-10 12:34:50,560 WARN L619 AbstractCegarLoop]: Verification canceled: while PredicateComparison was comparing new predicate (quantifier-free) to 186 known predicates. [2023-11-10 12:34:50,561 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-10 12:34:50,561 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-10 12:34:50,561 INFO L445 BasicCegarLoop]: Path program histogram: [7, 5, 1, 1] [2023-11-10 12:34:50,564 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-10 12:34:50,564 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-10 12:34:50,566 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 12:34:50 BasicIcfg [2023-11-10 12:34:50,566 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-10 12:34:50,566 INFO L158 Benchmark]: Toolchain (without parser) took 540786.49ms. Allocated memory was 277.9MB in the beginning and 2.0GB in the end (delta: 1.7GB). Free memory was 229.7MB in the beginning and 491.6MB in the end (delta: -261.9MB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-11-10 12:34:50,566 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 199.2MB. Free memory is still 154.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-10 12:34:50,566 INFO L158 Benchmark]: CACSL2BoogieTranslator took 192.25ms. Allocated memory is still 277.9MB. Free memory was 229.7MB in the beginning and 218.7MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-11-10 12:34:50,567 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.12ms. Allocated memory is still 277.9MB. Free memory was 218.2MB in the beginning and 217.0MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-10 12:34:50,567 INFO L158 Benchmark]: Boogie Preprocessor took 24.55ms. Allocated memory is still 277.9MB. Free memory was 217.0MB in the beginning and 215.6MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-10 12:34:50,567 INFO L158 Benchmark]: RCFGBuilder took 306.20ms. Allocated memory is still 277.9MB. Free memory was 215.6MB in the beginning and 199.3MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-11-10 12:34:50,567 INFO L158 Benchmark]: TraceAbstraction took 540233.71ms. Allocated memory was 277.9MB in the beginning and 2.0GB in the end (delta: 1.7GB). Free memory was 198.8MB in the beginning and 491.6MB in the end (delta: -292.8MB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-11-10 12:34:50,568 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 199.2MB. Free memory is still 154.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 192.25ms. Allocated memory is still 277.9MB. Free memory was 229.7MB in the beginning and 218.7MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.12ms. Allocated memory is still 277.9MB. Free memory was 218.2MB in the beginning and 217.0MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.55ms. Allocated memory is still 277.9MB. Free memory was 217.0MB in the beginning and 215.6MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 306.20ms. Allocated memory is still 277.9MB. Free memory was 215.6MB in the beginning and 199.3MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 540233.71ms. Allocated memory was 277.9MB in the beginning and 2.0GB in the end (delta: 1.7GB). Free memory was 198.8MB in the beginning and 491.6MB in the end (delta: -292.8MB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 186 known predicates. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 186 known predicates. - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 186 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 98 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 540.1s, OverallIterations: 14, TraceHistogramMax: 3, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 492.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 5 mSolverCounterUnknown, 5301 SdHoareTripleChecker+Valid, 66.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5301 mSDsluCounter, 4698 SdHoareTripleChecker+Invalid, 62.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4317 mSDsCounter, 1193 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19807 IncrementalHoareTripleChecker+Invalid, 21005 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1193 mSolverCounterUnsat, 381 mSDtfsCounter, 19807 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2626 GetRequests, 1237 SyntacticMatches, 10 SemanticMatches, 1378 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88390 ImplicationChecksByTransitivity, 361.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=131707occurred in iteration=13, InterpolantAutomatonStates: 1040, 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: 0.1s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 43.3s InterpolantComputationTime, 1763 NumberOfCodeBlocks, 1763 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 2382 ConstructedInterpolants, 0 QuantifiedInterpolants, 44325 SizeOfPredicates, 139 NumberOfNonLiveVariables, 1765 ConjunctsInSsa, 284 ConjunctsInUnsatCore, 34 InterpolantComputations, 6 PerfectInterpolantSequences, 14/252 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