/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/weaver/bench-exp2x9.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 15:06:04,547 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 15:06:04,627 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-12-09 15:06:04,654 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 15:06:04,655 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 15:06:04,655 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 15:06:04,662 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 15:06:04,663 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 15:06:04,663 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 15:06:04,665 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 15:06:04,665 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 15:06:04,665 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 15:06:04,665 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 15:06:04,666 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 15:06:04,666 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 15:06:04,666 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 15:06:04,666 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 15:06:04,667 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 15:06:04,667 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 15:06:04,667 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 15:06:04,667 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 15:06:04,672 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 15:06:04,672 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 15:06:04,672 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 15:06:04,673 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 15:06:04,673 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:06:04,673 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 15:06:04,673 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 15:06:04,673 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 15:06:04,674 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 15:06:04,674 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 15:06:04,675 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 15:06:04,675 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 15:06:04,675 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 15:06:04,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 15:06:04,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 15:06:04,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 15:06:04,948 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 15:06:04,948 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 15:06:04,949 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp2x9.wvr.c [2023-12-09 15:06:06,152 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 15:06:06,352 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 15:06:06,352 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x9.wvr.c [2023-12-09 15:06:06,359 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20278fbc5/614d4f1c88584d10af28a1754c13dd5d/FLAG1d62ef4d6 [2023-12-09 15:06:06,371 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20278fbc5/614d4f1c88584d10af28a1754c13dd5d [2023-12-09 15:06:06,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 15:06:06,375 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 15:06:06,376 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 15:06:06,376 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 15:06:06,380 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 15:06:06,381 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:06:06" (1/1) ... [2023-12-09 15:06:06,382 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1be8fef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:06:06, skipping insertion in model container [2023-12-09 15:06:06,382 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:06:06" (1/1) ... [2023-12-09 15:06:06,404 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 15:06:06,546 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/bench-exp2x9.wvr.c[2721,2734] [2023-12-09 15:06:06,551 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:06:06,560 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 15:06:06,582 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/bench-exp2x9.wvr.c[2721,2734] [2023-12-09 15:06:06,584 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:06:06,599 INFO L206 MainTranslator]: Completed translation [2023-12-09 15:06:06,600 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:06:06 WrapperNode [2023-12-09 15:06:06,600 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 15:06:06,601 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 15:06:06,601 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 15:06:06,601 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 15:06:06,608 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:06:06" (1/1) ... [2023-12-09 15:06:06,615 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:06:06" (1/1) ... [2023-12-09 15:06:06,634 INFO L138 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2023-12-09 15:06:06,634 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 15:06:06,635 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 15:06:06,635 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 15:06:06,635 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 15:06:06,643 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:06:06" (1/1) ... [2023-12-09 15:06:06,644 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:06:06" (1/1) ... [2023-12-09 15:06:06,647 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:06:06" (1/1) ... [2023-12-09 15:06:06,647 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:06:06" (1/1) ... [2023-12-09 15:06:06,653 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:06:06" (1/1) ... [2023-12-09 15:06:06,657 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:06:06" (1/1) ... [2023-12-09 15:06:06,659 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:06:06" (1/1) ... [2023-12-09 15:06:06,660 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:06:06" (1/1) ... [2023-12-09 15:06:06,662 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 15:06:06,663 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 15:06:06,663 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 15:06:06,663 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 15:06:06,664 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:06:06" (1/1) ... [2023-12-09 15:06:06,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:06:06,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:06:06,696 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-09 15:06:06,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-09 15:06:06,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 15:06:06,727 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-09 15:06:06,727 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-09 15:06:06,728 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-09 15:06:06,728 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-09 15:06:06,728 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-12-09 15:06:06,728 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-12-09 15:06:06,728 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-12-09 15:06:06,728 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-12-09 15:06:06,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 15:06:06,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 15:06:06,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 15:06:06,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 15:06:06,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 15:06:06,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 15:06:06,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 15:06:06,730 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-09 15:06:06,812 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 15:06:06,814 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 15:06:07,064 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 15:06:07,079 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 15:06:07,079 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-09 15:06:07,080 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:06:07 BoogieIcfgContainer [2023-12-09 15:06:07,080 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 15:06:07,082 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 15:06:07,082 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 15:06:07,085 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 15:06:07,085 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:06:06" (1/3) ... [2023-12-09 15:06:07,086 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31abb20f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:06:07, skipping insertion in model container [2023-12-09 15:06:07,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:06:06" (2/3) ... [2023-12-09 15:06:07,102 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31abb20f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:06:07, skipping insertion in model container [2023-12-09 15:06:07,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:06:07" (3/3) ... [2023-12-09 15:06:07,108 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp2x9.wvr.c [2023-12-09 15:06:07,122 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 15:06:07,122 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 15:06:07,122 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 15:06:07,213 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-12-09 15:06:07,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 154 transitions, 336 flow [2023-12-09 15:06:07,320 INFO L124 PetriNetUnfolderBase]: 10/150 cut-off events. [2023-12-09 15:06:07,321 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-12-09 15:06:07,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 150 events. 10/150 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 143 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 106. Up to 2 conditions per place. [2023-12-09 15:06:07,333 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 154 transitions, 336 flow [2023-12-09 15:06:07,337 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 140 places, 137 transitions, 298 flow [2023-12-09 15:06:07,348 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:06:07,354 INFO L362 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2ac521f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:06:07,355 INFO L363 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-12-09 15:06:07,396 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:06:07,397 INFO L124 PetriNetUnfolderBase]: 10/136 cut-off events. [2023-12-09 15:06:07,397 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-12-09 15:06:07,397 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:06:07,398 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:06:07,398 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 15:06:07,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:06:07,403 INFO L85 PathProgramCache]: Analyzing trace with hash -2123700521, now seen corresponding path program 1 times [2023-12-09 15:06:07,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:06:07,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372567866] [2023-12-09 15:06:07,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:06:07,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:06:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:06:08,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:06:08,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:06:08,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372567866] [2023-12-09 15:06:08,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372567866] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:06:08,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:06:08,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 15:06:08,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296550398] [2023-12-09 15:06:08,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:06:08,648 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:06:08,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:06:08,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:06:08,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-09 15:06:08,692 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 154 [2023-12-09 15:06:08,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 137 transitions, 298 flow. Second operand has 7 states, 7 states have (on average 85.57142857142857) internal successors, (599), 7 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:06:08,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:06:08,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 154 [2023-12-09 15:06:08,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:06:14,676 INFO L124 PetriNetUnfolderBase]: 41491/54304 cut-off events. [2023-12-09 15:06:14,676 INFO L125 PetriNetUnfolderBase]: For 4600/4600 co-relation queries the response was YES. [2023-12-09 15:06:14,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111649 conditions, 54304 events. 41491/54304 cut-off events. For 4600/4600 co-relation queries the response was YES. Maximal size of possible extension queue 1816. Compared 313785 event pairs, 19158 based on Foata normal form. 3/44799 useless extension candidates. Maximal degree in co-relation 110558. Up to 53451 conditions per place. [2023-12-09 15:06:15,374 INFO L140 encePairwiseOnDemand]: 136/154 looper letters, 75 selfloop transitions, 7 changer transitions 7/154 dead transitions. [2023-12-09 15:06:15,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 154 transitions, 531 flow [2023-12-09 15:06:15,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-09 15:06:15,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-09 15:06:15,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 830 transitions. [2023-12-09 15:06:15,397 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5988455988455988 [2023-12-09 15:06:15,398 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 830 transitions. [2023-12-09 15:06:15,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 830 transitions. [2023-12-09 15:06:15,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:06:15,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 830 transitions. [2023-12-09 15:06:15,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 92.22222222222223) internal successors, (830), 9 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:06:15,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 154.0) internal successors, (1540), 10 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:06:15,428 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 154.0) internal successors, (1540), 10 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:06:15,432 INFO L308 CegarLoopForPetriNet]: 140 programPoint places, 8 predicate places. [2023-12-09 15:06:15,433 INFO L500 AbstractCegarLoop]: Abstraction has has 148 places, 154 transitions, 531 flow [2023-12-09 15:06:15,433 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.57142857142857) internal successors, (599), 7 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:06:15,433 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:06:15,434 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:06:15,434 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 15:06:15,435 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 15:06:15,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:06:15,437 INFO L85 PathProgramCache]: Analyzing trace with hash -981447876, now seen corresponding path program 1 times [2023-12-09 15:06:15,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:06:15,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738734647] [2023-12-09 15:06:15,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:06:15,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:06:15,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:06:15,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:06:15,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:06:15,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738734647] [2023-12-09 15:06:15,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738734647] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:06:15,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:06:15,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 15:06:15,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824146713] [2023-12-09 15:06:15,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:06:15,900 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 15:06:15,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:06:15,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 15:06:15,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-09 15:06:15,903 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 154 [2023-12-09 15:06:15,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 154 transitions, 531 flow. Second operand has 6 states, 6 states have (on average 86.0) internal successors, (516), 6 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:06:15,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:06:15,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 154 [2023-12-09 15:06:15,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:06:20,743 INFO L124 PetriNetUnfolderBase]: 41394/55001 cut-off events. [2023-12-09 15:06:20,743 INFO L125 PetriNetUnfolderBase]: For 5156/9164 co-relation queries the response was YES. [2023-12-09 15:06:20,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166009 conditions, 55001 events. 41394/55001 cut-off events. For 5156/9164 co-relation queries the response was YES. Maximal size of possible extension queue 1871. Compared 328352 event pairs, 26218 based on Foata normal form. 26/45435 useless extension candidates. Maximal degree in co-relation 150120. Up to 53366 conditions per place. [2023-12-09 15:06:21,372 INFO L140 encePairwiseOnDemand]: 142/154 looper letters, 85 selfloop transitions, 11 changer transitions 7/166 dead transitions. [2023-12-09 15:06:21,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 166 transitions, 797 flow [2023-12-09 15:06:21,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-09 15:06:21,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-12-09 15:06:21,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 658 transitions. [2023-12-09 15:06:21,375 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6103896103896104 [2023-12-09 15:06:21,375 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 658 transitions. [2023-12-09 15:06:21,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 658 transitions. [2023-12-09 15:06:21,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:06:21,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 658 transitions. [2023-12-09 15:06:21,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 94.0) internal successors, (658), 7 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:06:21,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 154.0) internal successors, (1232), 8 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:06:21,380 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 154.0) internal successors, (1232), 8 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:06:21,381 INFO L308 CegarLoopForPetriNet]: 140 programPoint places, 14 predicate places. [2023-12-09 15:06:21,381 INFO L500 AbstractCegarLoop]: Abstraction has has 154 places, 166 transitions, 797 flow [2023-12-09 15:06:21,382 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.0) internal successors, (516), 6 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:06:21,382 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:06:21,382 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:06:21,382 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 15:06:21,382 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 15:06:21,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:06:21,383 INFO L85 PathProgramCache]: Analyzing trace with hash -622590588, now seen corresponding path program 2 times [2023-12-09 15:06:21,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:06:21,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529560196] [2023-12-09 15:06:21,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:06:21,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:06:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:06:21,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:06:21,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:06:21,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529560196] [2023-12-09 15:06:21,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529560196] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:06:21,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473890145] [2023-12-09 15:06:21,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:06:21,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:06:21,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:06:21,751 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:06:21,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-09 15:06:21,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:06:21,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:06:21,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-09 15:06:21,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:06:22,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:06:22,304 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:06:22,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:06:22,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473890145] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:06:22,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:06:22,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2023-12-09 15:06:22,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566220722] [2023-12-09 15:06:22,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:06:22,519 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-09 15:06:22,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:06:22,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-09 15:06:22,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-12-09 15:06:22,522 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 154 [2023-12-09 15:06:22,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 166 transitions, 797 flow. Second operand has 14 states, 14 states have (on average 84.21428571428571) internal successors, (1179), 14 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:06:22,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:06:22,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 154 [2023-12-09 15:06:22,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:06:29,359 INFO L124 PetriNetUnfolderBase]: 50277/70062 cut-off events. [2023-12-09 15:06:29,360 INFO L125 PetriNetUnfolderBase]: For 13484/25466 co-relation queries the response was YES. [2023-12-09 15:06:29,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274132 conditions, 70062 events. 50277/70062 cut-off events. For 13484/25466 co-relation queries the response was YES. Maximal size of possible extension queue 2303. Compared 473077 event pairs, 23727 based on Foata normal form. 35/59507 useless extension candidates. Maximal degree in co-relation 239582. Up to 66011 conditions per place. [2023-12-09 15:06:30,211 INFO L140 encePairwiseOnDemand]: 134/154 looper letters, 239 selfloop transitions, 30 changer transitions 9/341 dead transitions. [2023-12-09 15:06:30,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 341 transitions, 2469 flow [2023-12-09 15:06:30,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-09 15:06:30,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-12-09 15:06:30,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1862 transitions. [2023-12-09 15:06:30,216 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6045454545454545 [2023-12-09 15:06:30,216 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1862 transitions. [2023-12-09 15:06:30,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1862 transitions. [2023-12-09 15:06:30,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:06:30,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1862 transitions. [2023-12-09 15:06:30,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 93.1) internal successors, (1862), 20 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:06:30,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 154.0) internal successors, (3234), 21 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:06:30,230 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 154.0) internal successors, (3234), 21 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:06:30,231 INFO L308 CegarLoopForPetriNet]: 140 programPoint places, 33 predicate places. [2023-12-09 15:06:30,231 INFO L500 AbstractCegarLoop]: Abstraction has has 173 places, 341 transitions, 2469 flow [2023-12-09 15:06:30,232 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 84.21428571428571) internal successors, (1179), 14 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:06:30,232 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:06:30,233 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:06:30,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-09 15:06:30,438 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:06:30,439 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 15:06:30,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:06:30,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1280155206, now seen corresponding path program 3 times [2023-12-09 15:06:30,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:06:30,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908543131] [2023-12-09 15:06:30,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:06:30,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:06:30,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:06:30,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:06:30,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:06:30,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908543131] [2023-12-09 15:06:30,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908543131] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:06:30,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:06:30,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 15:06:30,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370285857] [2023-12-09 15:06:30,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:06:30,808 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 15:06:30,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:06:30,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 15:06:30,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-09 15:06:30,812 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 154 [2023-12-09 15:06:30,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 341 transitions, 2469 flow. Second operand has 6 states, 6 states have (on average 86.0) internal successors, (516), 6 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:06:30,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:06:30,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 154 [2023-12-09 15:06:30,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:06:37,964 INFO L124 PetriNetUnfolderBase]: 50276/71606 cut-off events. [2023-12-09 15:06:37,965 INFO L125 PetriNetUnfolderBase]: For 17019/30273 co-relation queries the response was YES. [2023-12-09 15:06:38,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 341995 conditions, 71606 events. 50276/71606 cut-off events. For 17019/30273 co-relation queries the response was YES. Maximal size of possible extension queue 2362. Compared 520091 event pairs, 7752 based on Foata normal form. 33/61275 useless extension candidates. Maximal degree in co-relation 335532. Up to 66081 conditions per place. [2023-12-09 15:06:38,654 INFO L140 encePairwiseOnDemand]: 142/154 looper letters, 266 selfloop transitions, 13 changer transitions 9/351 dead transitions. [2023-12-09 15:06:38,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 351 transitions, 3131 flow [2023-12-09 15:06:38,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-09 15:06:38,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-12-09 15:06:38,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 657 transitions. [2023-12-09 15:06:38,658 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6094619666048238 [2023-12-09 15:06:38,658 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 657 transitions. [2023-12-09 15:06:38,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 657 transitions. [2023-12-09 15:06:38,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:06:38,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 657 transitions. [2023-12-09 15:06:38,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 93.85714285714286) internal successors, (657), 7 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:06:38,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 154.0) internal successors, (1232), 8 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:06:38,662 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 154.0) internal successors, (1232), 8 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:06:38,665 INFO L308 CegarLoopForPetriNet]: 140 programPoint places, 39 predicate places. [2023-12-09 15:06:38,665 INFO L500 AbstractCegarLoop]: Abstraction has has 179 places, 351 transitions, 3131 flow [2023-12-09 15:06:38,665 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.0) internal successors, (516), 6 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:06:38,665 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:06:38,665 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:06:38,666 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 15:06:38,666 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 15:06:38,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:06:38,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1141064580, now seen corresponding path program 1 times [2023-12-09 15:06:38,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:06:38,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392010939] [2023-12-09 15:06:38,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:06:38,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:06:38,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:06:39,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:06:39,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:06:39,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392010939] [2023-12-09 15:06:39,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392010939] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:06:39,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14654761] [2023-12-09 15:06:39,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:06:39,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:06:39,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:06:39,090 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:06:39,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-09 15:06:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:06:39,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-09 15:06:39,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:06:39,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:06:39,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:06:39,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:06:39,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14654761] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:06:39,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:06:39,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2023-12-09 15:06:39,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051703107] [2023-12-09 15:06:39,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:06:39,742 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-09 15:06:39,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:06:39,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-09 15:06:39,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-12-09 15:06:39,745 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 154 [2023-12-09 15:06:39,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 351 transitions, 3131 flow. Second operand has 14 states, 14 states have (on average 84.71428571428571) internal successors, (1186), 14 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:06:39,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:06:39,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 154 [2023-12-09 15:06:39,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:06:49,323 INFO L124 PetriNetUnfolderBase]: 58796/85562 cut-off events. [2023-12-09 15:06:49,323 INFO L125 PetriNetUnfolderBase]: For 22652/45567 co-relation queries the response was YES. [2023-12-09 15:06:49,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 486019 conditions, 85562 events. 58796/85562 cut-off events. For 22652/45567 co-relation queries the response was YES. Maximal size of possible extension queue 2864. Compared 638369 event pairs, 1422 based on Foata normal form. 75/74912 useless extension candidates. Maximal degree in co-relation 426916. Up to 78643 conditions per place. [2023-12-09 15:06:50,493 INFO L140 encePairwiseOnDemand]: 134/154 looper letters, 786 selfloop transitions, 96 changer transitions 13/958 dead transitions. [2023-12-09 15:06:50,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 958 transitions, 11243 flow [2023-12-09 15:06:50,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-09 15:06:50,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-12-09 15:06:50,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1864 transitions. [2023-12-09 15:06:50,501 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6051948051948052 [2023-12-09 15:06:50,501 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1864 transitions. [2023-12-09 15:06:50,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1864 transitions. [2023-12-09 15:06:50,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:06:50,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1864 transitions. [2023-12-09 15:06:50,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 93.2) internal successors, (1864), 20 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:06:50,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 154.0) internal successors, (3234), 21 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:06:50,512 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 154.0) internal successors, (3234), 21 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:06:50,513 INFO L308 CegarLoopForPetriNet]: 140 programPoint places, 58 predicate places. [2023-12-09 15:06:50,513 INFO L500 AbstractCegarLoop]: Abstraction has has 198 places, 958 transitions, 11243 flow [2023-12-09 15:06:50,513 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 84.71428571428571) internal successors, (1186), 14 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:06:50,513 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:06:50,514 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:06:50,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-09 15:06:50,718 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:06:50,719 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 15:06:50,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:06:50,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1338194734, now seen corresponding path program 2 times [2023-12-09 15:06:50,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:06:50,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845529227] [2023-12-09 15:06:50,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:06:50,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:06:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:06:51,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:06:51,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:06:51,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845529227] [2023-12-09 15:06:51,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845529227] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:06:51,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:06:51,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 15:06:51,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783172621] [2023-12-09 15:06:51,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:06:51,037 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 15:06:51,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:06:51,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 15:06:51,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-09 15:06:51,038 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 154 [2023-12-09 15:06:51,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 958 transitions, 11243 flow. Second operand has 6 states, 6 states have (on average 86.0) internal successors, (516), 6 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:06:51,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:06:51,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 154 [2023-12-09 15:06:51,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:07:03,355 INFO L124 PetriNetUnfolderBase]: 58436/84193 cut-off events. [2023-12-09 15:07:03,355 INFO L125 PetriNetUnfolderBase]: For 19441/31768 co-relation queries the response was YES. [2023-12-09 15:07:03,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 559850 conditions, 84193 events. 58436/84193 cut-off events. For 19441/31768 co-relation queries the response was YES. Maximal size of possible extension queue 2816. Compared 618048 event pairs, 558 based on Foata normal form. 57/73877 useless extension candidates. Maximal degree in co-relation 493531. Up to 78076 conditions per place. [2023-12-09 15:07:04,327 INFO L140 encePairwiseOnDemand]: 142/154 looper letters, 857 selfloop transitions, 19 changer transitions 23/962 dead transitions. [2023-12-09 15:07:04,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 962 transitions, 13095 flow [2023-12-09 15:07:04,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-09 15:07:04,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-12-09 15:07:04,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 657 transitions. [2023-12-09 15:07:04,329 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6094619666048238 [2023-12-09 15:07:04,329 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 657 transitions. [2023-12-09 15:07:04,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 657 transitions. [2023-12-09 15:07:04,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:07:04,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 657 transitions. [2023-12-09 15:07:04,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 93.85714285714286) internal successors, (657), 7 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:07:04,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 154.0) internal successors, (1232), 8 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:07:04,333 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 154.0) internal successors, (1232), 8 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:07:04,334 INFO L308 CegarLoopForPetriNet]: 140 programPoint places, 64 predicate places. [2023-12-09 15:07:04,334 INFO L500 AbstractCegarLoop]: Abstraction has has 204 places, 962 transitions, 13095 flow [2023-12-09 15:07:04,334 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.0) internal successors, (516), 6 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:07:04,334 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:07:04,335 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:07:04,335 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-09 15:07:04,335 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 15:07:04,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:07:04,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1052387266, now seen corresponding path program 1 times [2023-12-09 15:07:04,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:07:04,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502090823] [2023-12-09 15:07:04,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:07:04,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:07:04,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:07:04,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:07:04,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:07:04,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502090823] [2023-12-09 15:07:04,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502090823] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:07:04,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:07:04,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 15:07:04,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799896116] [2023-12-09 15:07:04,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:07:04,765 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:07:04,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:07:04,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:07:04,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-09 15:07:04,767 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 154 [2023-12-09 15:07:04,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 962 transitions, 13095 flow. Second operand has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:07:04,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:07:04,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 154 [2023-12-09 15:07:04,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:07:20,552 INFO L124 PetriNetUnfolderBase]: 61950/89609 cut-off events. [2023-12-09 15:07:20,553 INFO L125 PetriNetUnfolderBase]: For 30700/80106 co-relation queries the response was YES. [2023-12-09 15:07:21,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 676874 conditions, 89609 events. 61950/89609 cut-off events. For 30700/80106 co-relation queries the response was YES. Maximal size of possible extension queue 3008. Compared 663863 event pairs, 1486 based on Foata normal form. 178/78988 useless extension candidates. Maximal degree in co-relation 597650. Up to 82810 conditions per place. [2023-12-09 15:07:21,985 INFO L140 encePairwiseOnDemand]: 143/154 looper letters, 1126 selfloop transitions, 78 changer transitions 23/1290 dead transitions. [2023-12-09 15:07:21,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 1290 transitions, 20258 flow [2023-12-09 15:07:21,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 15:07:21,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 15:07:21,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 766 transitions. [2023-12-09 15:07:21,987 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6217532467532467 [2023-12-09 15:07:21,987 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 766 transitions. [2023-12-09 15:07:21,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 766 transitions. [2023-12-09 15:07:21,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:07:21,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 766 transitions. [2023-12-09 15:07:21,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 95.75) internal successors, (766), 8 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:07:21,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 154.0) internal successors, (1386), 9 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:07:21,991 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 154.0) internal successors, (1386), 9 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:07:21,992 INFO L308 CegarLoopForPetriNet]: 140 programPoint places, 71 predicate places. [2023-12-09 15:07:21,992 INFO L500 AbstractCegarLoop]: Abstraction has has 211 places, 1290 transitions, 20258 flow [2023-12-09 15:07:21,992 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:07:21,992 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:07:21,992 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:07:21,992 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-09 15:07:21,992 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 15:07:21,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:07:21,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1533916554, now seen corresponding path program 1 times [2023-12-09 15:07:21,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:07:21,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931238900] [2023-12-09 15:07:21,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:07:21,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:07:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:07:22,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:07:22,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:07:22,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931238900] [2023-12-09 15:07:22,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931238900] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:07:22,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:07:22,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 15:07:22,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310952940] [2023-12-09 15:07:22,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:07:22,267 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:07:22,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:07:22,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:07:22,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-09 15:07:22,270 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 154 [2023-12-09 15:07:22,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 1290 transitions, 20258 flow. Second operand has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:07:22,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:07:22,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 154 [2023-12-09 15:07:22,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:07:40,488 INFO L124 PetriNetUnfolderBase]: 65192/93953 cut-off events. [2023-12-09 15:07:40,488 INFO L125 PetriNetUnfolderBase]: For 29305/53694 co-relation queries the response was YES. [2023-12-09 15:07:40,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 799848 conditions, 93953 events. 65192/93953 cut-off events. For 29305/53694 co-relation queries the response was YES. Maximal size of possible extension queue 2988. Compared 691533 event pairs, 1034 based on Foata normal form. 100/83362 useless extension candidates. Maximal degree in co-relation 710909. Up to 87232 conditions per place. [2023-12-09 15:07:42,267 INFO L140 encePairwiseOnDemand]: 143/154 looper letters, 1520 selfloop transitions, 111 changer transitions 23/1717 dead transitions. [2023-12-09 15:07:42,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 1717 transitions, 30464 flow [2023-12-09 15:07:42,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 15:07:42,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 15:07:42,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 766 transitions. [2023-12-09 15:07:42,269 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6217532467532467 [2023-12-09 15:07:42,269 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 766 transitions. [2023-12-09 15:07:42,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 766 transitions. [2023-12-09 15:07:42,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:07:42,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 766 transitions. [2023-12-09 15:07:42,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 95.75) internal successors, (766), 8 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:07:42,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 154.0) internal successors, (1386), 9 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:07:42,274 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 154.0) internal successors, (1386), 9 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:07:42,274 INFO L308 CegarLoopForPetriNet]: 140 programPoint places, 78 predicate places. [2023-12-09 15:07:42,274 INFO L500 AbstractCegarLoop]: Abstraction has has 218 places, 1717 transitions, 30464 flow [2023-12-09 15:07:42,275 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:07:42,275 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:07:42,275 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:07:42,275 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-09 15:07:42,275 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 15:07:42,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:07:42,276 INFO L85 PathProgramCache]: Analyzing trace with hash 2026020641, now seen corresponding path program 1 times [2023-12-09 15:07:42,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:07:42,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075940080] [2023-12-09 15:07:42,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:07:42,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:07:42,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:07:52,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:07:52,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:07:52,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075940080] [2023-12-09 15:07:52,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075940080] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:07:52,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030413720] [2023-12-09 15:07:52,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:07:52,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:07:52,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:07:52,020 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:07:52,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-09 15:07:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:07:52,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-09 15:07:52,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-09 15:10:01,576 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-09 15:10:01,576 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 [2023-12-09 15:10:02,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-09 15:10:02,782 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2023-12-09 15:10:02,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 [2023-12-09 15:10:02,789 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-12-09 15:10:02,790 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-09 15:10:02,790 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 114 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while executing Executor. [2023-12-09 15:10:02,791 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-12-09 15:10:02,791 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-12-09 15:10:02,791 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-12-09 15:10:02,791 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-12-09 15:10:02,792 INFO L457 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1] [2023-12-09 15:10:02,795 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 15:10:02,795 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 15:10:02,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:10:02 BasicIcfg [2023-12-09 15:10:02,799 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 15:10:02,799 INFO L158 Benchmark]: Toolchain (without parser) took 236424.22ms. Allocated memory was 349.2MB in the beginning and 8.0GB in the end (delta: 7.6GB). Free memory was 288.6MB in the beginning and 5.0GB in the end (delta: -4.8GB). Peak memory consumption was 2.9GB. Max. memory is 8.0GB. [2023-12-09 15:10:02,800 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 210.8MB. Free memory is still 160.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 15:10:02,800 INFO L158 Benchmark]: CACSL2BoogieTranslator took 224.15ms. Allocated memory is still 349.2MB. Free memory was 288.3MB in the beginning and 276.5MB in the end (delta: 11.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-09 15:10:02,800 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.18ms. Allocated memory is still 349.2MB. Free memory was 276.5MB in the beginning and 274.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 15:10:02,800 INFO L158 Benchmark]: Boogie Preprocessor took 27.45ms. Allocated memory is still 349.2MB. Free memory was 274.7MB in the beginning and 273.4MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-09 15:10:02,801 INFO L158 Benchmark]: RCFGBuilder took 417.52ms. Allocated memory is still 349.2MB. Free memory was 273.2MB in the beginning and 256.1MB in the end (delta: 17.1MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-09 15:10:02,801 INFO L158 Benchmark]: TraceAbstraction took 235716.99ms. Allocated memory was 349.2MB in the beginning and 8.0GB in the end (delta: 7.6GB). Free memory was 255.5MB in the beginning and 5.0GB in the end (delta: -4.8GB). Peak memory consumption was 2.8GB. Max. memory is 8.0GB. [2023-12-09 15:10:02,802 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 210.8MB. Free memory is still 160.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 224.15ms. Allocated memory is still 349.2MB. Free memory was 288.3MB in the beginning and 276.5MB in the end (delta: 11.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.18ms. Allocated memory is still 349.2MB. Free memory was 276.5MB in the beginning and 274.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.45ms. Allocated memory is still 349.2MB. Free memory was 274.7MB in the beginning and 273.4MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 417.52ms. Allocated memory is still 349.2MB. Free memory was 273.2MB in the beginning and 256.1MB in the end (delta: 17.1MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 235716.99ms. Allocated memory was 349.2MB in the beginning and 8.0GB in the end (delta: 7.6GB). Free memory was 255.5MB in the beginning and 5.0GB in the end (delta: -4.8GB). Peak memory consumption was 2.8GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 116]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 114 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 114 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 114 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 114 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - TimeoutResultAtElement [Line: 106]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 114 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 197 locations, 5 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: 235.5s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 89.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1105 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1105 mSDsluCounter, 1043 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 641 mSDsCounter, 62 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2379 IncrementalHoareTripleChecker+Invalid, 2441 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 62 mSolverCounterUnsat, 402 mSDtfsCounter, 2379 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 502 GetRequests, 416 SyntacticMatches, 2 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30464occurred in iteration=8, InterpolantAutomatonStates: 86, 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, 0.5s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 1042 NumberOfCodeBlocks, 1042 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1240 ConstructedInterpolants, 0 QuantifiedInterpolants, 17337 SizeOfPredicates, 20 NumberOfNonLiveVariables, 586 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 5/11 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