/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/pthread/stack_longest-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 14:47:15,730 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 14:47:15,767 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-12-09 14:47:15,785 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 14:47:15,786 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 14:47:15,786 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 14:47:15,787 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 14:47:15,787 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 14:47:15,787 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 14:47:15,788 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 14:47:15,788 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 14:47:15,788 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 14:47:15,788 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 14:47:15,789 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 14:47:15,789 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 14:47:15,789 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 14:47:15,790 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 14:47:15,790 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 14:47:15,790 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 14:47:15,791 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 14:47:15,791 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 14:47:15,794 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 14:47:15,794 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 14:47:15,795 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 14:47:15,797 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 14:47:15,798 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:47:15,798 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 14:47:15,798 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 14:47:15,799 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 14:47:15,799 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 14:47:15,799 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 14:47:15,800 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 14:47:15,800 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 14:47:15,800 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 14:47:16,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 14:47:16,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 14:47:16,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 14:47:16,020 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 14:47:16,020 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 14:47:16,021 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longest-2.i [2023-12-09 14:47:16,998 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 14:47:17,197 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 14:47:17,198 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-2.i [2023-12-09 14:47:17,214 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/039b824e6/55f6a46687da4eb8920722c88ce04ad4/FLAG5f48f804b [2023-12-09 14:47:17,228 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/039b824e6/55f6a46687da4eb8920722c88ce04ad4 [2023-12-09 14:47:17,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 14:47:17,232 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 14:47:17,236 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 14:47:17,236 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 14:47:17,239 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 14:47:17,240 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:47:17" (1/1) ... [2023-12-09 14:47:17,241 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fa3b08e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:17, skipping insertion in model container [2023-12-09 14:47:17,242 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:47:17" (1/1) ... [2023-12-09 14:47:17,288 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 14:47:17,534 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-2.i[41530,41543] [2023-12-09 14:47:17,556 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:47:17,567 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 14:47:17,604 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-2.i[41530,41543] [2023-12-09 14:47:17,610 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:47:17,645 INFO L206 MainTranslator]: Completed translation [2023-12-09 14:47:17,646 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:17 WrapperNode [2023-12-09 14:47:17,646 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 14:47:17,647 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 14:47:17,647 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 14:47:17,647 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 14:47:17,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:17" (1/1) ... [2023-12-09 14:47:17,662 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:17" (1/1) ... [2023-12-09 14:47:17,679 INFO L138 Inliner]: procedures = 278, calls = 40, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 154 [2023-12-09 14:47:17,680 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 14:47:17,680 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 14:47:17,680 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 14:47:17,680 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 14:47:17,686 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:17" (1/1) ... [2023-12-09 14:47:17,686 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:17" (1/1) ... [2023-12-09 14:47:17,688 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:17" (1/1) ... [2023-12-09 14:47:17,689 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:17" (1/1) ... [2023-12-09 14:47:17,707 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:17" (1/1) ... [2023-12-09 14:47:17,709 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:17" (1/1) ... [2023-12-09 14:47:17,710 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:17" (1/1) ... [2023-12-09 14:47:17,711 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:17" (1/1) ... [2023-12-09 14:47:17,714 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 14:47:17,714 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 14:47:17,714 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 14:47:17,714 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 14:47:17,715 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:17" (1/1) ... [2023-12-09 14:47:17,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:47:17,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:47:17,744 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-09 14:47:17,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-09 14:47:17,777 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-12-09 14:47:17,777 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-12-09 14:47:17,777 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-12-09 14:47:17,778 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-12-09 14:47:17,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 14:47:17,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 14:47:17,779 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-12-09 14:47:17,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 14:47:17,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 14:47:17,779 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-12-09 14:47:17,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 14:47:17,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 14:47:17,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 14:47:17,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 14:47:17,780 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-09 14:47:17,911 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 14:47:17,913 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 14:47:18,070 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 14:47:18,087 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 14:47:18,087 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-09 14:47:18,088 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:47:18 BoogieIcfgContainer [2023-12-09 14:47:18,089 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 14:47:18,090 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 14:47:18,090 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 14:47:18,092 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 14:47:18,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:47:17" (1/3) ... [2023-12-09 14:47:18,093 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d7ccd0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:47:18, skipping insertion in model container [2023-12-09 14:47:18,093 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:17" (2/3) ... [2023-12-09 14:47:18,093 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d7ccd0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:47:18, skipping insertion in model container [2023-12-09 14:47:18,093 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:47:18" (3/3) ... [2023-12-09 14:47:18,094 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longest-2.i [2023-12-09 14:47:18,106 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 14:47:18,106 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-09 14:47:18,106 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 14:47:18,195 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-09 14:47:18,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 161 transitions, 336 flow [2023-12-09 14:47:18,316 INFO L124 PetriNetUnfolderBase]: 10/159 cut-off events. [2023-12-09 14:47:18,317 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 14:47:18,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 159 events. 10/159 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 383 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 121. Up to 3 conditions per place. [2023-12-09 14:47:18,327 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 161 transitions, 336 flow [2023-12-09 14:47:18,336 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 149 transitions, 307 flow [2023-12-09 14:47:18,351 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:47:18,356 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;@5e49a1b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:47:18,356 INFO L363 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-12-09 14:47:18,395 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:47:18,395 INFO L124 PetriNetUnfolderBase]: 5/120 cut-off events. [2023-12-09 14:47:18,396 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-12-09 14:47:18,396 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:18,396 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] [2023-12-09 14:47:18,397 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:47:18,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:18,401 INFO L85 PathProgramCache]: Analyzing trace with hash 660455964, now seen corresponding path program 1 times [2023-12-09 14:47:18,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:18,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382694926] [2023-12-09 14:47:18,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:18,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:18,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:18,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:18,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382694926] [2023-12-09 14:47:18,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382694926] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:47:18,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:47:18,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-09 14:47:18,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949602806] [2023-12-09 14:47:18,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:47:18,746 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 14:47:18,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:18,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 14:47:18,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 14:47:18,768 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 161 [2023-12-09 14:47:18,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 149 transitions, 307 flow. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:18,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:18,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 161 [2023-12-09 14:47:18,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:18,968 INFO L124 PetriNetUnfolderBase]: 152/997 cut-off events. [2023-12-09 14:47:18,968 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2023-12-09 14:47:18,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1312 conditions, 997 events. 152/997 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 5321 event pairs, 54 based on Foata normal form. 96/1007 useless extension candidates. Maximal degree in co-relation 1145. Up to 181 conditions per place. [2023-12-09 14:47:18,979 INFO L140 encePairwiseOnDemand]: 151/161 looper letters, 28 selfloop transitions, 3 changer transitions 0/151 dead transitions. [2023-12-09 14:47:18,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 151 transitions, 379 flow [2023-12-09 14:47:18,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 14:47:18,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 14:47:18,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2023-12-09 14:47:18,994 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9151138716356108 [2023-12-09 14:47:18,995 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2023-12-09 14:47:18,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2023-12-09 14:47:18,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:19,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2023-12-09 14:47:19,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:19,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:19,008 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:19,011 INFO L308 CegarLoopForPetriNet]: 146 programPoint places, -2 predicate places. [2023-12-09 14:47:19,011 INFO L500 AbstractCegarLoop]: Abstraction has has 144 places, 151 transitions, 379 flow [2023-12-09 14:47:19,012 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:19,012 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:19,012 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] [2023-12-09 14:47:19,012 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 14:47:19,013 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:47:19,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:19,013 INFO L85 PathProgramCache]: Analyzing trace with hash 671292220, now seen corresponding path program 1 times [2023-12-09 14:47:19,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:19,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128848514] [2023-12-09 14:47:19,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:19,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:19,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:19,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:19,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128848514] [2023-12-09 14:47:19,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128848514] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:47:19,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:47:19,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-09 14:47:19,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847942119] [2023-12-09 14:47:19,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:47:19,117 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-09 14:47:19,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:19,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-09 14:47:19,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-09 14:47:19,118 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 161 [2023-12-09 14:47:19,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 151 transitions, 379 flow. Second operand has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:19,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:19,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 161 [2023-12-09 14:47:19,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:19,328 INFO L124 PetriNetUnfolderBase]: 297/1541 cut-off events. [2023-12-09 14:47:19,328 INFO L125 PetriNetUnfolderBase]: For 404/438 co-relation queries the response was YES. [2023-12-09 14:47:19,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2478 conditions, 1541 events. 297/1541 cut-off events. For 404/438 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 9736 event pairs, 86 based on Foata normal form. 5/1412 useless extension candidates. Maximal degree in co-relation 2155. Up to 310 conditions per place. [2023-12-09 14:47:19,339 INFO L140 encePairwiseOnDemand]: 156/161 looper letters, 39 selfloop transitions, 4 changer transitions 0/172 dead transitions. [2023-12-09 14:47:19,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 172 transitions, 551 flow [2023-12-09 14:47:19,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-09 14:47:19,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-12-09 14:47:19,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 579 transitions. [2023-12-09 14:47:19,341 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8990683229813664 [2023-12-09 14:47:19,341 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 579 transitions. [2023-12-09 14:47:19,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 579 transitions. [2023-12-09 14:47:19,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:19,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 579 transitions. [2023-12-09 14:47:19,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 144.75) internal successors, (579), 4 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:19,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 161.0) internal successors, (805), 5 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:19,345 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 161.0) internal successors, (805), 5 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:19,345 INFO L308 CegarLoopForPetriNet]: 146 programPoint places, 1 predicate places. [2023-12-09 14:47:19,345 INFO L500 AbstractCegarLoop]: Abstraction has has 147 places, 172 transitions, 551 flow [2023-12-09 14:47:19,346 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:19,346 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:19,346 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] [2023-12-09 14:47:19,346 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 14:47:19,347 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:47:19,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:19,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1386531267, now seen corresponding path program 1 times [2023-12-09 14:47:19,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:19,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260667238] [2023-12-09 14:47:19,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:19,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:19,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:19,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:19,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260667238] [2023-12-09 14:47:19,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260667238] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:47:19,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:47:19,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-09 14:47:19,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610519612] [2023-12-09 14:47:19,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:47:19,500 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 14:47:19,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:19,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 14:47:19,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 14:47:19,502 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 161 [2023-12-09 14:47:19,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 172 transitions, 551 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:19,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:19,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 161 [2023-12-09 14:47:19,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:19,606 INFO L124 PetriNetUnfolderBase]: 71/670 cut-off events. [2023-12-09 14:47:19,607 INFO L125 PetriNetUnfolderBase]: For 552/560 co-relation queries the response was YES. [2023-12-09 14:47:19,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1155 conditions, 670 events. 71/670 cut-off events. For 552/560 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3286 event pairs, 1 based on Foata normal form. 46/674 useless extension candidates. Maximal degree in co-relation 818. Up to 103 conditions per place. [2023-12-09 14:47:19,610 INFO L140 encePairwiseOnDemand]: 157/161 looper letters, 22 selfloop transitions, 14 changer transitions 1/173 dead transitions. [2023-12-09 14:47:19,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 173 transitions, 652 flow [2023-12-09 14:47:19,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 14:47:19,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 14:47:19,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 435 transitions. [2023-12-09 14:47:19,612 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9006211180124224 [2023-12-09 14:47:19,612 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 435 transitions. [2023-12-09 14:47:19,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 435 transitions. [2023-12-09 14:47:19,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:19,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 435 transitions. [2023-12-09 14:47:19,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:19,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:19,614 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:19,615 INFO L308 CegarLoopForPetriNet]: 146 programPoint places, 3 predicate places. [2023-12-09 14:47:19,615 INFO L500 AbstractCegarLoop]: Abstraction has has 149 places, 173 transitions, 652 flow [2023-12-09 14:47:19,615 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:19,615 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:19,616 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] [2023-12-09 14:47:19,616 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 14:47:19,616 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:47:19,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:19,617 INFO L85 PathProgramCache]: Analyzing trace with hash 187243038, now seen corresponding path program 1 times [2023-12-09 14:47:19,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:19,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12972512] [2023-12-09 14:47:19,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:19,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:19,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:19,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:19,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12972512] [2023-12-09 14:47:19,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12972512] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:47:19,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:47:19,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-09 14:47:19,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361193986] [2023-12-09 14:47:19,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:47:19,702 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 14:47:19,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:19,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 14:47:19,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 14:47:19,703 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 161 [2023-12-09 14:47:19,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 173 transitions, 652 flow. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:19,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:19,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 161 [2023-12-09 14:47:19,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:19,798 INFO L124 PetriNetUnfolderBase]: 68/658 cut-off events. [2023-12-09 14:47:19,798 INFO L125 PetriNetUnfolderBase]: For 618/630 co-relation queries the response was YES. [2023-12-09 14:47:19,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1293 conditions, 658 events. 68/658 cut-off events. For 618/630 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2896 event pairs, 7 based on Foata normal form. 0/621 useless extension candidates. Maximal degree in co-relation 957. Up to 128 conditions per place. [2023-12-09 14:47:19,802 INFO L140 encePairwiseOnDemand]: 155/161 looper letters, 50 selfloop transitions, 4 changer transitions 0/177 dead transitions. [2023-12-09 14:47:19,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 177 transitions, 790 flow [2023-12-09 14:47:19,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 14:47:19,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 14:47:19,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2023-12-09 14:47:19,803 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8923395445134575 [2023-12-09 14:47:19,803 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2023-12-09 14:47:19,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2023-12-09 14:47:19,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:19,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2023-12-09 14:47:19,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:19,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:19,806 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:19,807 INFO L308 CegarLoopForPetriNet]: 146 programPoint places, 3 predicate places. [2023-12-09 14:47:19,807 INFO L500 AbstractCegarLoop]: Abstraction has has 149 places, 177 transitions, 790 flow [2023-12-09 14:47:19,808 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:19,808 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:19,808 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:47:19,808 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 14:47:19,808 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:47:19,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:19,809 INFO L85 PathProgramCache]: Analyzing trace with hash -919895656, now seen corresponding path program 1 times [2023-12-09 14:47:19,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:19,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392897048] [2023-12-09 14:47:19,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:19,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:19,936 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:19,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:19,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392897048] [2023-12-09 14:47:19,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392897048] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:47:19,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118873806] [2023-12-09 14:47:19,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:19,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:19,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:47:19,942 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 14:47:19,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-09 14:47:20,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:20,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-09 14:47:20,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:47:20,185 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:20,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:47:20,284 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:20,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118873806] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:47:20,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:47:20,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-12-09 14:47:20,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045603738] [2023-12-09 14:47:20,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:47:20,286 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-09 14:47:20,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:20,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-09 14:47:20,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-09 14:47:20,289 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 161 [2023-12-09 14:47:20,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 177 transitions, 790 flow. Second operand has 10 states, 10 states have (on average 133.4) internal successors, (1334), 10 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:20,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:20,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 161 [2023-12-09 14:47:20,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:20,545 INFO L124 PetriNetUnfolderBase]: 130/1137 cut-off events. [2023-12-09 14:47:20,545 INFO L125 PetriNetUnfolderBase]: For 1722/1752 co-relation queries the response was YES. [2023-12-09 14:47:20,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2656 conditions, 1137 events. 130/1137 cut-off events. For 1722/1752 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 5786 event pairs, 4 based on Foata normal form. 0/1077 useless extension candidates. Maximal degree in co-relation 2013. Up to 261 conditions per place. [2023-12-09 14:47:20,552 INFO L140 encePairwiseOnDemand]: 153/161 looper letters, 103 selfloop transitions, 16 changer transitions 4/243 dead transitions. [2023-12-09 14:47:20,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 243 transitions, 1598 flow [2023-12-09 14:47:20,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-09 14:47:20,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-12-09 14:47:20,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1646 transitions. [2023-12-09 14:47:20,555 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8519668737060041 [2023-12-09 14:47:20,555 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1646 transitions. [2023-12-09 14:47:20,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1646 transitions. [2023-12-09 14:47:20,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:20,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1646 transitions. [2023-12-09 14:47:20,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 137.16666666666666) internal successors, (1646), 12 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:20,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 161.0) internal successors, (2093), 13 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:20,563 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 161.0) internal successors, (2093), 13 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:20,565 INFO L308 CegarLoopForPetriNet]: 146 programPoint places, 14 predicate places. [2023-12-09 14:47:20,566 INFO L500 AbstractCegarLoop]: Abstraction has has 160 places, 243 transitions, 1598 flow [2023-12-09 14:47:20,569 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 133.4) internal successors, (1334), 10 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:20,569 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:20,570 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] [2023-12-09 14:47:20,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-09 14:47:20,776 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:20,776 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:47:20,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:20,777 INFO L85 PathProgramCache]: Analyzing trace with hash 516095470, now seen corresponding path program 1 times [2023-12-09 14:47:20,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:20,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983572846] [2023-12-09 14:47:20,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:20,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:21,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:21,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:21,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983572846] [2023-12-09 14:47:21,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983572846] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:47:21,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:47:21,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-12-09 14:47:21,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94438261] [2023-12-09 14:47:21,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:47:21,840 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-09 14:47:21,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:21,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-09 14:47:21,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2023-12-09 14:47:21,843 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 161 [2023-12-09 14:47:21,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 243 transitions, 1598 flow. Second operand has 22 states, 22 states have (on average 87.5) internal successors, (1925), 22 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:21,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:21,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 161 [2023-12-09 14:47:21,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:23,690 INFO L124 PetriNetUnfolderBase]: 1162/4589 cut-off events. [2023-12-09 14:47:23,690 INFO L125 PetriNetUnfolderBase]: For 9919/10101 co-relation queries the response was YES. [2023-12-09 14:47:23,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12204 conditions, 4589 events. 1162/4589 cut-off events. For 9919/10101 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 35458 event pairs, 225 based on Foata normal form. 4/4364 useless extension candidates. Maximal degree in co-relation 9105. Up to 1280 conditions per place. [2023-12-09 14:47:23,726 INFO L140 encePairwiseOnDemand]: 137/161 looper letters, 261 selfloop transitions, 27 changer transitions 51/462 dead transitions. [2023-12-09 14:47:23,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 462 transitions, 3919 flow [2023-12-09 14:47:23,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-09 14:47:23,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-12-09 14:47:23,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2342 transitions. [2023-12-09 14:47:23,730 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5818633540372671 [2023-12-09 14:47:23,730 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2342 transitions. [2023-12-09 14:47:23,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2342 transitions. [2023-12-09 14:47:23,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:23,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2342 transitions. [2023-12-09 14:47:23,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 93.68) internal successors, (2342), 25 states have internal predecessors, (2342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:23,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 161.0) internal successors, (4186), 26 states have internal predecessors, (4186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:23,739 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 161.0) internal successors, (4186), 26 states have internal predecessors, (4186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:23,740 INFO L308 CegarLoopForPetriNet]: 146 programPoint places, 38 predicate places. [2023-12-09 14:47:23,740 INFO L500 AbstractCegarLoop]: Abstraction has has 184 places, 462 transitions, 3919 flow [2023-12-09 14:47:23,740 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 87.5) internal successors, (1925), 22 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:23,740 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:23,741 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] [2023-12-09 14:47:23,741 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-09 14:47:23,741 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:47:23,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:23,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1950483508, now seen corresponding path program 2 times [2023-12-09 14:47:23,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:23,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643831245] [2023-12-09 14:47:23,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:23,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:24,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:24,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:24,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643831245] [2023-12-09 14:47:24,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643831245] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:47:24,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:47:24,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-12-09 14:47:24,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791655744] [2023-12-09 14:47:24,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:47:24,605 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-09 14:47:24,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:24,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-09 14:47:24,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2023-12-09 14:47:24,607 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 161 [2023-12-09 14:47:24,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 462 transitions, 3919 flow. Second operand has 22 states, 22 states have (on average 87.5) internal successors, (1925), 22 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:24,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:24,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 161 [2023-12-09 14:47:24,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:26,689 INFO L124 PetriNetUnfolderBase]: 1577/6277 cut-off events. [2023-12-09 14:47:26,690 INFO L125 PetriNetUnfolderBase]: For 15631/16000 co-relation queries the response was YES. [2023-12-09 14:47:26,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19943 conditions, 6277 events. 1577/6277 cut-off events. For 15631/16000 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 52490 event pairs, 139 based on Foata normal form. 5/5962 useless extension candidates. Maximal degree in co-relation 14432. Up to 2208 conditions per place. [2023-12-09 14:47:26,741 INFO L140 encePairwiseOnDemand]: 138/161 looper letters, 373 selfloop transitions, 40 changer transitions 103/639 dead transitions. [2023-12-09 14:47:26,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 639 transitions, 6695 flow [2023-12-09 14:47:26,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-09 14:47:26,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-12-09 14:47:26,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2342 transitions. [2023-12-09 14:47:26,752 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5818633540372671 [2023-12-09 14:47:26,752 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2342 transitions. [2023-12-09 14:47:26,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2342 transitions. [2023-12-09 14:47:26,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:26,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2342 transitions. [2023-12-09 14:47:26,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 93.68) internal successors, (2342), 25 states have internal predecessors, (2342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:26,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 161.0) internal successors, (4186), 26 states have internal predecessors, (4186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:26,767 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 161.0) internal successors, (4186), 26 states have internal predecessors, (4186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:26,767 INFO L308 CegarLoopForPetriNet]: 146 programPoint places, 62 predicate places. [2023-12-09 14:47:26,767 INFO L500 AbstractCegarLoop]: Abstraction has has 208 places, 639 transitions, 6695 flow [2023-12-09 14:47:26,769 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 87.5) internal successors, (1925), 22 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:26,769 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:26,769 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:47:26,770 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-09 14:47:26,770 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:47:26,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:26,770 INFO L85 PathProgramCache]: Analyzing trace with hash 245326480, now seen corresponding path program 1 times [2023-12-09 14:47:26,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:26,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281113479] [2023-12-09 14:47:26,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:26,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:26,933 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:26,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:26,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281113479] [2023-12-09 14:47:26,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281113479] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:47:26,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152765756] [2023-12-09 14:47:26,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:26,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:26,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:47:26,935 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 14:47:26,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-09 14:47:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:27,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-09 14:47:27,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:47:27,163 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-09 14:47:27,163 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:47:27,271 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-09 14:47:27,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152765756] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:47:27,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:47:27,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2023-12-09 14:47:27,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540771685] [2023-12-09 14:47:27,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:47:27,272 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-09 14:47:27,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:27,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-09 14:47:27,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-12-09 14:47:27,274 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 161 [2023-12-09 14:47:27,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 639 transitions, 6695 flow. Second operand has 12 states, 12 states have (on average 131.58333333333334) internal successors, (1579), 12 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:27,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:27,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 161 [2023-12-09 14:47:27,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:28,312 INFO L124 PetriNetUnfolderBase]: 1538/6174 cut-off events. [2023-12-09 14:47:28,313 INFO L125 PetriNetUnfolderBase]: For 20710/21204 co-relation queries the response was YES. [2023-12-09 14:47:28,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21168 conditions, 6174 events. 1538/6174 cut-off events. For 20710/21204 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 50301 event pairs, 162 based on Foata normal form. 13/5887 useless extension candidates. Maximal degree in co-relation 15435. Up to 2353 conditions per place. [2023-12-09 14:47:28,360 INFO L140 encePairwiseOnDemand]: 150/161 looper letters, 254 selfloop transitions, 41 changer transitions 65/648 dead transitions. [2023-12-09 14:47:28,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 648 transitions, 7347 flow [2023-12-09 14:47:28,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-09 14:47:28,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-12-09 14:47:28,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2378 transitions. [2023-12-09 14:47:28,364 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8205659075224293 [2023-12-09 14:47:28,364 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2378 transitions. [2023-12-09 14:47:28,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2378 transitions. [2023-12-09 14:47:28,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:28,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2378 transitions. [2023-12-09 14:47:28,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 132.11111111111111) internal successors, (2378), 18 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:28,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 161.0) internal successors, (3059), 19 states have internal predecessors, (3059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:28,373 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 161.0) internal successors, (3059), 19 states have internal predecessors, (3059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:28,375 INFO L308 CegarLoopForPetriNet]: 146 programPoint places, 77 predicate places. [2023-12-09 14:47:28,375 INFO L500 AbstractCegarLoop]: Abstraction has has 223 places, 648 transitions, 7347 flow [2023-12-09 14:47:28,375 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 131.58333333333334) internal successors, (1579), 12 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:28,375 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:28,375 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:47:28,384 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 14:47:28,579 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-09 14:47:28,580 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:47:28,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:28,580 INFO L85 PathProgramCache]: Analyzing trace with hash -673798463, now seen corresponding path program 1 times [2023-12-09 14:47:28,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:28,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656275380] [2023-12-09 14:47:28,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:28,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:28,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:29,599 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-09 14:47:29,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:29,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656275380] [2023-12-09 14:47:29,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656275380] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:47:29,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:47:29,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-12-09 14:47:29,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345395621] [2023-12-09 14:47:29,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:47:29,600 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-09 14:47:29,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:29,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-09 14:47:29,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2023-12-09 14:47:29,602 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 161 [2023-12-09 14:47:29,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 648 transitions, 7347 flow. Second operand has 23 states, 23 states have (on average 78.04347826086956) internal successors, (1795), 23 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:29,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:29,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 161 [2023-12-09 14:47:29,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:34,598 INFO L124 PetriNetUnfolderBase]: 2917/9441 cut-off events. [2023-12-09 14:47:34,598 INFO L125 PetriNetUnfolderBase]: For 38307/39023 co-relation queries the response was YES. [2023-12-09 14:47:34,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39793 conditions, 9441 events. 2917/9441 cut-off events. For 38307/39023 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 81787 event pairs, 170 based on Foata normal form. 0/9017 useless extension candidates. Maximal degree in co-relation 29687. Up to 4187 conditions per place. [2023-12-09 14:47:34,654 INFO L140 encePairwiseOnDemand]: 125/161 looper letters, 849 selfloop transitions, 257 changer transitions 141/1312 dead transitions. [2023-12-09 14:47:34,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 1312 transitions, 17922 flow [2023-12-09 14:47:34,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-12-09 14:47:34,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2023-12-09 14:47:34,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 5313 transitions. [2023-12-09 14:47:34,662 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4925373134328358 [2023-12-09 14:47:34,662 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 5313 transitions. [2023-12-09 14:47:34,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 5313 transitions. [2023-12-09 14:47:34,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:34,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 5313 transitions. [2023-12-09 14:47:34,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 79.29850746268657) internal successors, (5313), 67 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:34,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 161.0) internal successors, (10948), 68 states have internal predecessors, (10948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:34,695 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 161.0) internal successors, (10948), 68 states have internal predecessors, (10948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:34,695 INFO L308 CegarLoopForPetriNet]: 146 programPoint places, 143 predicate places. [2023-12-09 14:47:34,696 INFO L500 AbstractCegarLoop]: Abstraction has has 289 places, 1312 transitions, 17922 flow [2023-12-09 14:47:34,696 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 78.04347826086956) internal successors, (1795), 23 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:34,696 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:34,696 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:47:34,696 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-09 14:47:34,697 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:47:34,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:34,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1916245789, now seen corresponding path program 2 times [2023-12-09 14:47:34,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:34,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13522213] [2023-12-09 14:47:34,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:34,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:35,792 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-09 14:47:35,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:35,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13522213] [2023-12-09 14:47:35,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13522213] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:47:35,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419488306] [2023-12-09 14:47:35,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 14:47:35,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:35,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:47:35,793 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 14:47:35,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-09 14:47:35,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-09 14:47:35,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 14:47:35,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 63 conjunts are in the unsatisfiable core [2023-12-09 14:47:35,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:47:35,974 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-12-09 14:47:35,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-12-09 14:47:35,991 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-09 14:47:35,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-09 14:47:36,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-12-09 14:47:36,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 24 [2023-12-09 14:47:37,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 10 [2023-12-09 14:47:37,204 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-09 14:47:37,204 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:47:37,874 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 14:47:37,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-12-09 14:47:37,885 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 14:47:37,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 52 [2023-12-09 14:47:37,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2023-12-09 14:47:38,632 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-09 14:47:38,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419488306] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:47:38,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:47:38,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 73 [2023-12-09 14:47:38,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084005501] [2023-12-09 14:47:38,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:47:38,634 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2023-12-09 14:47:38,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:38,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2023-12-09 14:47:38,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=4976, Unknown=13, NotChecked=0, Total=5256 [2023-12-09 14:47:38,639 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 161 [2023-12-09 14:47:38,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 1312 transitions, 17922 flow. Second operand has 73 states, 73 states have (on average 64.94520547945206) internal successors, (4741), 73 states have internal predecessors, (4741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:38,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:38,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 161 [2023-12-09 14:47:38,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:49,903 INFO L124 PetriNetUnfolderBase]: 3421/11085 cut-off events. [2023-12-09 14:47:49,904 INFO L125 PetriNetUnfolderBase]: For 50325/51285 co-relation queries the response was YES. [2023-12-09 14:47:49,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54896 conditions, 11085 events. 3421/11085 cut-off events. For 50325/51285 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 99271 event pairs, 100 based on Foata normal form. 10/10600 useless extension candidates. Maximal degree in co-relation 40651. Up to 5159 conditions per place. [2023-12-09 14:47:49,969 INFO L140 encePairwiseOnDemand]: 120/161 looper letters, 1118 selfloop transitions, 365 changer transitions 165/1705 dead transitions. [2023-12-09 14:47:49,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 1705 transitions, 26184 flow [2023-12-09 14:47:49,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-12-09 14:47:49,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2023-12-09 14:47:49,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 5763 transitions. [2023-12-09 14:47:49,976 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.40676171654432525 [2023-12-09 14:47:49,976 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 5763 transitions. [2023-12-09 14:47:49,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 5763 transitions. [2023-12-09 14:47:49,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:49,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 5763 transitions. [2023-12-09 14:47:49,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 65.48863636363636) internal successors, (5763), 88 states have internal predecessors, (5763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:50,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 161.0) internal successors, (14329), 89 states have internal predecessors, (14329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:50,003 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 161.0) internal successors, (14329), 89 states have internal predecessors, (14329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:50,003 INFO L308 CegarLoopForPetriNet]: 146 programPoint places, 230 predicate places. [2023-12-09 14:47:50,004 INFO L500 AbstractCegarLoop]: Abstraction has has 376 places, 1705 transitions, 26184 flow [2023-12-09 14:47:50,005 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 64.94520547945206) internal successors, (4741), 73 states have internal predecessors, (4741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:50,005 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:50,005 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:47:50,015 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 14:47:50,209 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:50,209 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:47:50,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:50,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1211568189, now seen corresponding path program 1 times [2023-12-09 14:47:50,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:50,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598751331] [2023-12-09 14:47:50,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:50,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:52,048 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:52,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:52,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598751331] [2023-12-09 14:47:52,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598751331] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:47:52,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621955635] [2023-12-09 14:47:52,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:52,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:52,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:47:52,049 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 14:47:52,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-09 14:47:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:52,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 73 conjunts are in the unsatisfiable core [2023-12-09 14:47:52,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:47:52,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-12-09 14:47:53,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 14:47:53,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 19 [2023-12-09 14:47:53,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 10 [2023-12-09 14:47:53,913 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 7 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:53,914 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:47:55,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2023-12-09 14:47:55,894 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 7 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:55,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621955635] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:47:55,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:47:55,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 30, 29] total 93 [2023-12-09 14:47:55,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666323016] [2023-12-09 14:47:55,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:47:55,895 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2023-12-09 14:47:55,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:55,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2023-12-09 14:47:55,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=8179, Unknown=0, NotChecked=0, Total=8556 [2023-12-09 14:47:55,903 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 161 [2023-12-09 14:47:55,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 1705 transitions, 26184 flow. Second operand has 93 states, 93 states have (on average 77.86021505376344) internal successors, (7241), 93 states have internal predecessors, (7241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:55,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:55,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 161 [2023-12-09 14:47:55,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:48:58,934 INFO L124 PetriNetUnfolderBase]: 8505/27758 cut-off events. [2023-12-09 14:48:58,934 INFO L125 PetriNetUnfolderBase]: For 138422/141112 co-relation queries the response was YES. [2023-12-09 14:48:59,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157225 conditions, 27758 events. 8505/27758 cut-off events. For 138422/141112 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 292187 event pairs, 187 based on Foata normal form. 10/26523 useless extension candidates. Maximal degree in co-relation 113716. Up to 14618 conditions per place. [2023-12-09 14:48:59,172 INFO L140 encePairwiseOnDemand]: 117/161 looper letters, 3243 selfloop transitions, 1487 changer transitions 601/5396 dead transitions. [2023-12-09 14:48:59,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 930 places, 5396 transitions, 87892 flow [2023-12-09 14:48:59,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 555 states. [2023-12-09 14:48:59,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 555 states. [2023-12-09 14:48:59,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 43315 transitions. [2023-12-09 14:48:59,210 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.48475183257791954 [2023-12-09 14:48:59,210 INFO L72 ComplementDD]: Start complementDD. Operand 555 states and 43315 transitions. [2023-12-09 14:48:59,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 555 states and 43315 transitions. [2023-12-09 14:48:59,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:48:59,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 555 states and 43315 transitions. [2023-12-09 14:48:59,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 556 states, 555 states have (on average 78.04504504504504) internal successors, (43315), 555 states have internal predecessors, (43315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:48:59,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 556 states, 556 states have (on average 161.0) internal successors, (89516), 556 states have internal predecessors, (89516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:48:59,478 INFO L81 ComplementDD]: Finished complementDD. Result has 556 states, 556 states have (on average 161.0) internal successors, (89516), 556 states have internal predecessors, (89516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:48:59,478 INFO L308 CegarLoopForPetriNet]: 146 programPoint places, 784 predicate places. [2023-12-09 14:48:59,479 INFO L500 AbstractCegarLoop]: Abstraction has has 930 places, 5396 transitions, 87892 flow [2023-12-09 14:48:59,480 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 77.86021505376344) internal successors, (7241), 93 states have internal predecessors, (7241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:48:59,480 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:48:59,480 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:48:59,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-09 14:48:59,685 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:48:59,685 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:48:59,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:48:59,686 INFO L85 PathProgramCache]: Analyzing trace with hash 560186549, now seen corresponding path program 2 times [2023-12-09 14:48:59,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:48:59,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622323963] [2023-12-09 14:48:59,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:48:59,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:48:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:49:01,499 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:49:01,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:49:01,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622323963] [2023-12-09 14:49:01,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622323963] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:49:01,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498859688] [2023-12-09 14:49:01,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 14:49:01,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:49:01,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:49:01,503 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 14:49:01,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-09 14:49:01,655 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 14:49:01,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 14:49:01,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 85 conjunts are in the unsatisfiable core [2023-12-09 14:49:01,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:49:01,728 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-12-09 14:49:01,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-12-09 14:49:01,735 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-09 14:49:01,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-09 14:49:02,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-12-09 14:49:02,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 24 [2023-12-09 14:49:02,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 14:49:02,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 19 [2023-12-09 14:49:03,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 10 [2023-12-09 14:49:03,535 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:49:03,535 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:49:07,152 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 14:49:07,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-12-09 14:49:07,159 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 14:49:07,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 52 [2023-12-09 14:49:07,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2023-12-09 14:49:07,958 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:49:07,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498859688] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:49:07,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:49:07,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 33] total 98 [2023-12-09 14:49:07,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856102318] [2023-12-09 14:49:07,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:49:07,959 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2023-12-09 14:49:07,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:49:07,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2023-12-09 14:49:07,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=9119, Unknown=8, NotChecked=0, Total=9506 [2023-12-09 14:49:07,964 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 161 [2023-12-09 14:49:07,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 930 places, 5396 transitions, 87892 flow. Second operand has 98 states, 98 states have (on average 64.84693877551021) internal successors, (6355), 98 states have internal predecessors, (6355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:49:07,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:49:07,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 161 [2023-12-09 14:49:07,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:50:07,973 INFO L124 PetriNetUnfolderBase]: 12200/40131 cut-off events. [2023-12-09 14:50:07,973 INFO L125 PetriNetUnfolderBase]: For 223997/228257 co-relation queries the response was YES. [2023-12-09 14:50:08,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255236 conditions, 40131 events. 12200/40131 cut-off events. For 223997/228257 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 442550 event pairs, 243 based on Foata normal form. 18/38336 useless extension candidates. Maximal degree in co-relation 180429. Up to 21631 conditions per place. [2023-12-09 14:50:08,501 INFO L140 encePairwiseOnDemand]: 117/161 looper letters, 4543 selfloop transitions, 2466 changer transitions 829/7895 dead transitions. [2023-12-09 14:50:08,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1175 places, 7895 transitions, 144361 flow [2023-12-09 14:50:08,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 246 states. [2023-12-09 14:50:08,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2023-12-09 14:50:08,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 15953 transitions. [2023-12-09 14:50:08,514 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.40279250618593143 [2023-12-09 14:50:08,514 INFO L72 ComplementDD]: Start complementDD. Operand 246 states and 15953 transitions. [2023-12-09 14:50:08,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 246 states and 15953 transitions. [2023-12-09 14:50:08,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:50:08,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 246 states and 15953 transitions. [2023-12-09 14:50:08,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 247 states, 246 states have (on average 64.84959349593495) internal successors, (15953), 246 states have internal predecessors, (15953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:50:08,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 247 states, 247 states have (on average 161.0) internal successors, (39767), 247 states have internal predecessors, (39767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:50:08,577 INFO L81 ComplementDD]: Finished complementDD. Result has 247 states, 247 states have (on average 161.0) internal successors, (39767), 247 states have internal predecessors, (39767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:50:08,577 INFO L308 CegarLoopForPetriNet]: 146 programPoint places, 1029 predicate places. [2023-12-09 14:50:08,578 INFO L500 AbstractCegarLoop]: Abstraction has has 1175 places, 7895 transitions, 144361 flow [2023-12-09 14:50:08,579 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 64.84693877551021) internal successors, (6355), 98 states have internal predecessors, (6355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:50:08,579 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:50:08,579 INFO L233 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:50:08,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-09 14:50:08,786 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-09 14:50:08,789 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:50:08,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:50:08,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1470096200, now seen corresponding path program 2 times [2023-12-09 14:50:08,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:50:08,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753628656] [2023-12-09 14:50:08,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:50:08,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:50:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:50:08,931 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 15 proven. 177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:50:08,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:50:08,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753628656] [2023-12-09 14:50:08,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753628656] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:50:08,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15799750] [2023-12-09 14:50:08,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 14:50:08,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:50:08,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:50:08,933 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 14:50:08,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-09 14:50:09,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 14:50:09,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 14:50:09,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-09 14:50:09,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:50:09,193 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 15 proven. 177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:50:09,193 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:50:09,414 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 15 proven. 177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:50:09,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15799750] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:50:09,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:50:09,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-12-09 14:50:09,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985222085] [2023-12-09 14:50:09,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:50:09,415 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-09 14:50:09,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:50:09,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-09 14:50:09,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-12-09 14:50:09,420 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 161 [2023-12-09 14:50:09,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1175 places, 7895 transitions, 144361 flow. Second operand has 18 states, 18 states have (on average 133.88888888888889) internal successors, (2410), 18 states have internal predecessors, (2410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:50:09,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:50:09,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 161 [2023-12-09 14:50:09,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:51:02,295 INFO L124 PetriNetUnfolderBase]: 16408/55376 cut-off events. [2023-12-09 14:51:02,295 INFO L125 PetriNetUnfolderBase]: For 376136/383798 co-relation queries the response was YES. [2023-12-09 14:51:02,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357727 conditions, 55376 events. 16408/55376 cut-off events. For 376136/383798 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 622753 event pairs, 362 based on Foata normal form. 0/52755 useless extension candidates. Maximal degree in co-relation 261413. Up to 28842 conditions per place. [2023-12-09 14:51:02,869 INFO L140 encePairwiseOnDemand]: 154/161 looper letters, 4159 selfloop transitions, 676 changer transitions 829/9508 dead transitions. [2023-12-09 14:51:02,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1198 places, 9508 transitions, 192193 flow [2023-12-09 14:51:02,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-09 14:51:02,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-12-09 14:51:02,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3282 transitions. [2023-12-09 14:51:02,871 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8493788819875776 [2023-12-09 14:51:02,871 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3282 transitions. [2023-12-09 14:51:02,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3282 transitions. [2023-12-09 14:51:02,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:51:02,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3282 transitions. [2023-12-09 14:51:02,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 136.75) internal successors, (3282), 24 states have internal predecessors, (3282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:02,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 161.0) internal successors, (4025), 25 states have internal predecessors, (4025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:02,876 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 161.0) internal successors, (4025), 25 states have internal predecessors, (4025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:02,877 INFO L308 CegarLoopForPetriNet]: 146 programPoint places, 1052 predicate places. [2023-12-09 14:51:02,877 INFO L500 AbstractCegarLoop]: Abstraction has has 1198 places, 9508 transitions, 192193 flow [2023-12-09 14:51:02,877 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 133.88888888888889) internal successors, (2410), 18 states have internal predecessors, (2410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:02,877 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:51:02,877 INFO L233 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:51:02,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-09 14:51:03,081 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:51:03,082 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:51:03,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:51:03,082 INFO L85 PathProgramCache]: Analyzing trace with hash 684235251, now seen corresponding path program 3 times [2023-12-09 14:51:03,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:51:03,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971070247] [2023-12-09 14:51:03,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:03,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:51:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:51:03,234 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 87 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:51:03,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:51:03,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971070247] [2023-12-09 14:51:03,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971070247] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:51:03,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214109731] [2023-12-09 14:51:03,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 14:51:03,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:51:03,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:51:03,236 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 14:51:03,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-09 14:51:03,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-09 14:51:03,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 14:51:03,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 102 conjunts are in the unsatisfiable core [2023-12-09 14:51:03,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:51:03,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-12-09 14:51:03,505 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-12-09 14:51:03,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-12-09 14:51:03,541 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-09 14:51:03,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-09 14:51:03,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 10 [2023-12-09 14:51:04,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2023-12-09 14:51:04,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 41 [2023-12-09 14:51:05,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 56 [2023-12-09 14:51:05,017 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 14:51:05,018 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2023-12-09 14:51:05,019 WARN L561 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2023-12-09 14:51:10,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 164 treesize of output 140 [2023-12-09 14:51:10,106 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 14:51:10,107 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2023-12-09 14:51:10,119 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 14:51:10,120 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2023-12-09 14:51:11,293 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 24 proven. 81 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-09 14:51:11,293 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-09 14:51:23,455 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-09 14:51:23,456 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 14:51:23,912 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-12-09 14:51:23,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-09 14:51:24,113 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:51:24,114 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 214 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 74 known predicates. [2023-12-09 14:51:24,115 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 6 remaining) [2023-12-09 14:51:24,115 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-12-09 14:51:24,115 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-12-09 14:51:24,115 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-12-09 14:51:24,116 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-12-09 14:51:24,116 INFO L457 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-09 14:51:24,120 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 14:51:24,120 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 14:51:24,123 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 02:51:24 BasicIcfg [2023-12-09 14:51:24,123 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 14:51:24,124 INFO L158 Benchmark]: Toolchain (without parser) took 246891.81ms. Allocated memory was 185.6MB in the beginning and 2.8GB in the end (delta: 2.6GB). Free memory was 151.8MB in the beginning and 603.2MB in the end (delta: -451.5MB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. [2023-12-09 14:51:24,125 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 185.6MB. Free memory is still 142.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 14:51:24,125 INFO L158 Benchmark]: CACSL2BoogieTranslator took 410.12ms. Allocated memory is still 185.6MB. Free memory was 151.6MB in the beginning and 121.5MB in the end (delta: 30.2MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. [2023-12-09 14:51:24,128 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.36ms. Allocated memory is still 185.6MB. Free memory was 121.5MB in the beginning and 118.7MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-09 14:51:24,128 INFO L158 Benchmark]: Boogie Preprocessor took 33.36ms. Allocated memory is still 185.6MB. Free memory was 118.7MB in the beginning and 117.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-09 14:51:24,129 INFO L158 Benchmark]: RCFGBuilder took 374.50ms. Allocated memory is still 185.6MB. Free memory was 117.0MB in the beginning and 97.7MB in the end (delta: 19.3MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-09 14:51:24,129 INFO L158 Benchmark]: TraceAbstraction took 246033.51ms. Allocated memory was 185.6MB in the beginning and 2.8GB in the end (delta: 2.6GB). Free memory was 97.3MB in the beginning and 603.2MB in the end (delta: -505.9MB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. [2023-12-09 14:51:24,129 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 185.6MB. Free memory is still 142.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 410.12ms. Allocated memory is still 185.6MB. Free memory was 151.6MB in the beginning and 121.5MB in the end (delta: 30.2MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.36ms. Allocated memory is still 185.6MB. Free memory was 121.5MB in the beginning and 118.7MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.36ms. Allocated memory is still 185.6MB. Free memory was 118.7MB in the beginning and 117.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 374.50ms. Allocated memory is still 185.6MB. Free memory was 117.0MB in the beginning and 97.7MB in the end (delta: 19.3MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 246033.51ms. Allocated memory was 185.6MB in the beginning and 2.8GB in the end (delta: 2.6GB). Free memory was 97.3MB in the beginning and 603.2MB in the end (delta: -505.9MB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 941]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 214 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 74 known predicates. - TimeoutResultAtElement [Line: 1021]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 214 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 74 known predicates. - TimeoutResultAtElement [Line: 1022]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 214 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 74 known predicates. - TimeoutResultAtElement [Line: 941]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 214 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 74 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 256 locations, 6 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: 245.9s, OverallIterations: 14, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 200.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14139 SdHoareTripleChecker+Valid, 17.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14139 mSDsluCounter, 11953 SdHoareTripleChecker+Invalid, 14.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11449 mSDsCounter, 460 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35646 IncrementalHoareTripleChecker+Invalid, 36106 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 460 mSolverCounterUnsat, 504 mSDtfsCounter, 35646 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3217 GetRequests, 1851 SyntacticMatches, 4 SemanticMatches, 1362 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211662 ImplicationChecksByTransitivity, 85.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=192193occurred in iteration=13, InterpolantAutomatonStates: 1073, 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: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 21.9s InterpolantComputationTime, 2509 NumberOfCodeBlocks, 2468 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 3408 ConstructedInterpolants, 32 QuantifiedInterpolants, 35911 SizeOfPredicates, 125 NumberOfNonLiveVariables, 1977 ConjunctsInSsa, 239 ConjunctsInUnsatCore, 25 InterpolantComputations, 7 PerfectInterpolantSequences, 219/1246 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