/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.fix-rcfgbuilder-lbe-0ccecc1-m [2023-11-10 11:47:56,615 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-10 11:47:56,692 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-10 11:47:56,725 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-10 11:47:56,726 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-10 11:47:56,726 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-10 11:47:56,727 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-10 11:47:56,727 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-10 11:47:56,727 INFO L153 SettingsManager]: * Use SBE=true [2023-11-10 11:47:56,731 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-10 11:47:56,731 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-10 11:47:56,731 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-10 11:47:56,732 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-10 11:47:56,733 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-10 11:47:56,733 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-10 11:47:56,733 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-10 11:47:56,734 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-10 11:47:56,734 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-10 11:47:56,734 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-10 11:47:56,734 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-10 11:47:56,734 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-10 11:47:56,735 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-10 11:47:56,735 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-10 11:47:56,735 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-10 11:47:56,736 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-10 11:47:56,737 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 11:47:56,737 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-10 11:47:56,737 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-10 11:47:56,737 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-10 11:47:56,737 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-10 11:47:56,738 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-10 11:47:56,738 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-10 11:47:56,739 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-10 11:47:56,739 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-10 11:47:56,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-10 11:47:56,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-10 11:47:56,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-10 11:47:56,988 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-10 11:47:56,989 INFO L274 PluginConnector]: CDTParser initialized [2023-11-10 11:47:56,990 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-10 11:47:58,229 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-10 11:47:58,475 INFO L384 CDTParser]: Found 1 translation units. [2023-11-10 11:47:58,475 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-10 11:47:58,492 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5463765a/8def053818994607a4a08f5e2acfd46f/FLAGfe5ed6327 [2023-11-10 11:47:58,503 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5463765a/8def053818994607a4a08f5e2acfd46f [2023-11-10 11:47:58,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-10 11:47:58,506 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-10 11:47:58,507 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-10 11:47:58,507 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-10 11:47:58,511 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-10 11:47:58,512 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:47:58" (1/1) ... [2023-11-10 11:47:58,512 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57a31166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:58, skipping insertion in model container [2023-11-10 11:47:58,513 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:47:58" (1/1) ... [2023-11-10 11:47:58,556 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-10 11:47:58,688 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-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-10 11:47:58,805 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 11:47:58,817 INFO L202 MainTranslator]: Completed pre-run [2023-11-10 11:47:58,829 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-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-10 11:47:58,863 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 11:47:58,895 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-10 11:47:58,896 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-10 11:47:58,902 INFO L206 MainTranslator]: Completed translation [2023-11-10 11:47:58,903 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:58 WrapperNode [2023-11-10 11:47:58,903 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-10 11:47:58,904 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-10 11:47:58,904 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-10 11:47:58,904 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-10 11:47:58,911 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:58" (1/1) ... [2023-11-10 11:47:58,942 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:58" (1/1) ... [2023-11-10 11:47:58,966 INFO L138 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2023-11-10 11:47:58,966 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-10 11:47:58,967 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-10 11:47:58,968 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-10 11:47:58,968 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-10 11:47:58,976 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:58" (1/1) ... [2023-11-10 11:47:58,976 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:58" (1/1) ... [2023-11-10 11:47:58,993 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:58" (1/1) ... [2023-11-10 11:47:58,993 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:58" (1/1) ... [2023-11-10 11:47:58,998 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:58" (1/1) ... [2023-11-10 11:47:58,999 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:58" (1/1) ... [2023-11-10 11:47:59,000 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:58" (1/1) ... [2023-11-10 11:47:59,001 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:58" (1/1) ... [2023-11-10 11:47:59,004 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-10 11:47:59,004 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-10 11:47:59,004 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-10 11:47:59,004 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-10 11:47:59,005 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:58" (1/1) ... [2023-11-10 11:47:59,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 11:47:59,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 11:47:59,050 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-10 11:47:59,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-10 11:47:59,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-10 11:47:59,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-10 11:47:59,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-10 11:47:59,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-10 11:47:59,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-10 11:47:59,090 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-10 11:47:59,090 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-10 11:47:59,091 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-10 11:47:59,091 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-10 11:47:59,091 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-10 11:47:59,091 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-10 11:47:59,091 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-10 11:47:59,091 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-10 11:47:59,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-10 11:47:59,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-10 11:47:59,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-10 11:47:59,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-10 11:47:59,094 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-10 11:47:59,246 INFO L236 CfgBuilder]: Building ICFG [2023-11-10 11:47:59,248 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-10 11:47:59,385 INFO L277 CfgBuilder]: Performing block encoding [2023-11-10 11:47:59,393 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-10 11:47:59,393 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-10 11:47:59,396 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:47:59 BoogieIcfgContainer [2023-11-10 11:47:59,397 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-10 11:47:59,399 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-10 11:47:59,399 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-10 11:47:59,401 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-10 11:47:59,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 11:47:58" (1/3) ... [2023-11-10 11:47:59,402 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@efa92e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:47:59, skipping insertion in model container [2023-11-10 11:47:59,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:58" (2/3) ... [2023-11-10 11:47:59,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@efa92e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:47:59, skipping insertion in model container [2023-11-10 11:47:59,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:47:59" (3/3) ... [2023-11-10 11:47:59,404 INFO L112 eAbstractionObserver]: Analyzing ICFG safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-10 11:47:59,418 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-10 11:47:59,419 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-10 11:47:59,419 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-10 11:47:59,493 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-10 11:47:59,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 108 transitions, 232 flow [2023-11-10 11:47:59,576 INFO L124 PetriNetUnfolderBase]: 2/104 cut-off events. [2023-11-10 11:47:59,576 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-10 11:47:59,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 104 events. 2/104 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 58 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2023-11-10 11:47:59,581 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 108 transitions, 232 flow [2023-11-10 11:47:59,586 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 87 transitions, 186 flow [2023-11-10 11:47:59,603 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 11:47:59,608 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3f0fa65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 11:47:59,608 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-10 11:47:59,647 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 11:47:59,647 INFO L124 PetriNetUnfolderBase]: 1/86 cut-off events. [2023-11-10 11:47:59,647 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-10 11:47:59,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:47:59,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:47:59,649 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 11:47:59,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:47:59,654 INFO L85 PathProgramCache]: Analyzing trace with hash -36225358, now seen corresponding path program 1 times [2023-11-10 11:47:59,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:47:59,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897631033] [2023-11-10 11:47:59,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:47:59,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:47:59,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:00,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:48:00,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:00,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897631033] [2023-11-10 11:48:00,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897631033] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:00,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:00,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 11:48:00,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140211798] [2023-11-10 11:48:00,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:00,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 11:48:00,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:00,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 11:48:00,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-10 11:48:00,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 108 [2023-11-10 11:48:00,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 87 transitions, 186 flow. Second operand has 7 states, 7 states have (on average 86.0) internal successors, (602), 7 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:00,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:00,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 108 [2023-11-10 11:48:00,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:00,781 INFO L124 PetriNetUnfolderBase]: 97/321 cut-off events. [2023-11-10 11:48:00,782 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-10 11:48:00,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 551 conditions, 321 events. 97/321 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1242 event pairs, 17 based on Foata normal form. 11/315 useless extension candidates. Maximal degree in co-relation 515. Up to 100 conditions per place. [2023-11-10 11:48:00,788 INFO L140 encePairwiseOnDemand]: 101/108 looper letters, 21 selfloop transitions, 2 changer transitions 25/116 dead transitions. [2023-11-10 11:48:00,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 116 transitions, 349 flow [2023-11-10 11:48:00,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-10 11:48:00,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-10 11:48:00,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 808 transitions. [2023-11-10 11:48:00,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.831275720164609 [2023-11-10 11:48:00,804 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 808 transitions. [2023-11-10 11:48:00,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 808 transitions. [2023-11-10 11:48:00,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:00,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 808 transitions. [2023-11-10 11:48:00,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 89.77777777777777) internal successors, (808), 9 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:00,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 108.0) internal successors, (1080), 10 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:00,825 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 108.0) internal successors, (1080), 10 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:00,826 INFO L175 Difference]: Start difference. First operand has 99 places, 87 transitions, 186 flow. Second operand 9 states and 808 transitions. [2023-11-10 11:48:00,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 116 transitions, 349 flow [2023-11-10 11:48:00,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 116 transitions, 342 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-10 11:48:00,835 INFO L231 Difference]: Finished difference. Result has 110 places, 86 transitions, 200 flow [2023-11-10 11:48:00,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=200, PETRI_PLACES=110, PETRI_TRANSITIONS=86} [2023-11-10 11:48:00,842 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 11 predicate places. [2023-11-10 11:48:00,842 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 86 transitions, 200 flow [2023-11-10 11:48:00,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 86.0) internal successors, (602), 7 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:00,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:00,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:48:00,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-10 11:48:00,845 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 11:48:00,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:00,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1851731413, now seen corresponding path program 1 times [2023-11-10 11:48:00,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:00,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219239264] [2023-11-10 11:48:00,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:00,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:01,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:48:01,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:01,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219239264] [2023-11-10 11:48:01,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219239264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:01,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:01,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 11:48:01,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212842677] [2023-11-10 11:48:01,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:01,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 11:48:01,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:01,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 11:48:01,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-10 11:48:01,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 108 [2023-11-10 11:48:01,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 86 transitions, 200 flow. Second operand has 7 states, 7 states have (on average 88.85714285714286) internal successors, (622), 7 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:01,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:01,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 108 [2023-11-10 11:48:01,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:01,353 INFO L124 PetriNetUnfolderBase]: 31/200 cut-off events. [2023-11-10 11:48:01,354 INFO L125 PetriNetUnfolderBase]: For 35/59 co-relation queries the response was YES. [2023-11-10 11:48:01,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 200 events. 31/200 cut-off events. For 35/59 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 642 event pairs, 7 based on Foata normal form. 4/194 useless extension candidates. Maximal degree in co-relation 335. Up to 20 conditions per place. [2023-11-10 11:48:01,358 INFO L140 encePairwiseOnDemand]: 100/108 looper letters, 13 selfloop transitions, 4 changer transitions 18/106 dead transitions. [2023-11-10 11:48:01,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 106 transitions, 333 flow [2023-11-10 11:48:01,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-10 11:48:01,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-10 11:48:01,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 907 transitions. [2023-11-10 11:48:01,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8398148148148148 [2023-11-10 11:48:01,362 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 907 transitions. [2023-11-10 11:48:01,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 907 transitions. [2023-11-10 11:48:01,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:01,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 907 transitions. [2023-11-10 11:48:01,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 90.7) internal successors, (907), 10 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:01,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 108.0) internal successors, (1188), 11 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:01,369 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 108.0) internal successors, (1188), 11 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:01,369 INFO L175 Difference]: Start difference. First operand has 110 places, 86 transitions, 200 flow. Second operand 10 states and 907 transitions. [2023-11-10 11:48:01,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 106 transitions, 333 flow [2023-11-10 11:48:01,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 106 transitions, 299 flow, removed 14 selfloop flow, removed 8 redundant places. [2023-11-10 11:48:01,375 INFO L231 Difference]: Finished difference. Result has 113 places, 86 transitions, 214 flow [2023-11-10 11:48:01,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=214, PETRI_PLACES=113, PETRI_TRANSITIONS=86} [2023-11-10 11:48:01,376 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 14 predicate places. [2023-11-10 11:48:01,376 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 86 transitions, 214 flow [2023-11-10 11:48:01,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.85714285714286) internal successors, (622), 7 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:01,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:01,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:48:01,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-10 11:48:01,377 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 11:48:01,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:01,378 INFO L85 PathProgramCache]: Analyzing trace with hash 2830964, now seen corresponding path program 1 times [2023-11-10 11:48:01,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:01,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083844587] [2023-11-10 11:48:01,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:01,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:01,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:01,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:48:01,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:01,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083844587] [2023-11-10 11:48:01,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083844587] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:01,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:01,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 11:48:01,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199071461] [2023-11-10 11:48:01,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:01,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 11:48:01,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:01,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 11:48:01,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-10 11:48:01,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 108 [2023-11-10 11:48:01,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 86 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 91.83333333333333) internal successors, (551), 6 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:01,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:01,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 108 [2023-11-10 11:48:01,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:01,752 INFO L124 PetriNetUnfolderBase]: 4/137 cut-off events. [2023-11-10 11:48:01,752 INFO L125 PetriNetUnfolderBase]: For 33/35 co-relation queries the response was YES. [2023-11-10 11:48:01,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 137 events. 4/137 cut-off events. For 33/35 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 284 event pairs, 0 based on Foata normal form. 2/137 useless extension candidates. Maximal degree in co-relation 200. Up to 9 conditions per place. [2023-11-10 11:48:01,753 INFO L140 encePairwiseOnDemand]: 102/108 looper letters, 11 selfloop transitions, 2 changer transitions 10/97 dead transitions. [2023-11-10 11:48:01,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 97 transitions, 306 flow [2023-11-10 11:48:01,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-10 11:48:01,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-10 11:48:01,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 835 transitions. [2023-11-10 11:48:01,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8590534979423868 [2023-11-10 11:48:01,756 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 835 transitions. [2023-11-10 11:48:01,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 835 transitions. [2023-11-10 11:48:01,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:01,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 835 transitions. [2023-11-10 11:48:01,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 92.77777777777777) internal successors, (835), 9 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:01,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 108.0) internal successors, (1080), 10 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:01,762 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 108.0) internal successors, (1080), 10 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:01,762 INFO L175 Difference]: Start difference. First operand has 113 places, 86 transitions, 214 flow. Second operand 9 states and 835 transitions. [2023-11-10 11:48:01,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 97 transitions, 306 flow [2023-11-10 11:48:01,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 97 transitions, 260 flow, removed 18 selfloop flow, removed 10 redundant places. [2023-11-10 11:48:01,767 INFO L231 Difference]: Finished difference. Result has 112 places, 86 transitions, 208 flow [2023-11-10 11:48:01,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=208, PETRI_PLACES=112, PETRI_TRANSITIONS=86} [2023-11-10 11:48:01,769 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 13 predicate places. [2023-11-10 11:48:01,769 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 86 transitions, 208 flow [2023-11-10 11:48:01,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.83333333333333) internal successors, (551), 6 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:01,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:01,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:48:01,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-10 11:48:01,770 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 11:48:01,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:01,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1317578283, now seen corresponding path program 1 times [2023-11-10 11:48:01,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:01,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046979522] [2023-11-10 11:48:01,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:01,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:02,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:48:02,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:02,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046979522] [2023-11-10 11:48:02,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046979522] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:02,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:02,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-10 11:48:02,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367987111] [2023-11-10 11:48:02,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:02,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-10 11:48:02,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:02,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-10 11:48:02,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-10 11:48:02,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 108 [2023-11-10 11:48:02,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 86 transitions, 208 flow. Second operand has 8 states, 8 states have (on average 84.125) internal successors, (673), 8 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:02,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:02,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 108 [2023-11-10 11:48:02,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:02,231 INFO L124 PetriNetUnfolderBase]: 94/369 cut-off events. [2023-11-10 11:48:02,231 INFO L125 PetriNetUnfolderBase]: For 100/124 co-relation queries the response was YES. [2023-11-10 11:48:02,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 699 conditions, 369 events. 94/369 cut-off events. For 100/124 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1636 event pairs, 29 based on Foata normal form. 8/359 useless extension candidates. Maximal degree in co-relation 660. Up to 56 conditions per place. [2023-11-10 11:48:02,233 INFO L140 encePairwiseOnDemand]: 98/108 looper letters, 21 selfloop transitions, 6 changer transitions 26/119 dead transitions. [2023-11-10 11:48:02,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 119 transitions, 417 flow [2023-11-10 11:48:02,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-10 11:48:02,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-10 11:48:02,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 957 transitions. [2023-11-10 11:48:02,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8055555555555556 [2023-11-10 11:48:02,236 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 957 transitions. [2023-11-10 11:48:02,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 957 transitions. [2023-11-10 11:48:02,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:02,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 957 transitions. [2023-11-10 11:48:02,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 87.0) internal successors, (957), 11 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:02,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 108.0) internal successors, (1296), 12 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:02,242 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 108.0) internal successors, (1296), 12 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:02,242 INFO L175 Difference]: Start difference. First operand has 112 places, 86 transitions, 208 flow. Second operand 11 states and 957 transitions. [2023-11-10 11:48:02,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 119 transitions, 417 flow [2023-11-10 11:48:02,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 119 transitions, 383 flow, removed 14 selfloop flow, removed 8 redundant places. [2023-11-10 11:48:02,247 INFO L231 Difference]: Finished difference. Result has 116 places, 86 transitions, 226 flow [2023-11-10 11:48:02,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=226, PETRI_PLACES=116, PETRI_TRANSITIONS=86} [2023-11-10 11:48:02,249 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 17 predicate places. [2023-11-10 11:48:02,249 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 86 transitions, 226 flow [2023-11-10 11:48:02,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 84.125) internal successors, (673), 8 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:02,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:02,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:48:02,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-10 11:48:02,250 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 11:48:02,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:02,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1245735282, now seen corresponding path program 1 times [2023-11-10 11:48:02,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:02,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722906699] [2023-11-10 11:48:02,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:02,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:02,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:02,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:48:02,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:02,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722906699] [2023-11-10 11:48:02,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722906699] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:02,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:02,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 11:48:02,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691242255] [2023-11-10 11:48:02,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:02,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 11:48:02,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:02,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 11:48:02,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-10 11:48:02,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 108 [2023-11-10 11:48:02,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 86 transitions, 226 flow. Second operand has 6 states, 6 states have (on average 89.16666666666667) internal successors, (535), 6 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:02,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:02,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 108 [2023-11-10 11:48:02,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:02,641 INFO L124 PetriNetUnfolderBase]: 391/872 cut-off events. [2023-11-10 11:48:02,641 INFO L125 PetriNetUnfolderBase]: For 145/148 co-relation queries the response was YES. [2023-11-10 11:48:02,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1685 conditions, 872 events. 391/872 cut-off events. For 145/148 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5453 event pairs, 13 based on Foata normal form. 0/849 useless extension candidates. Maximal degree in co-relation 1639. Up to 302 conditions per place. [2023-11-10 11:48:02,649 INFO L140 encePairwiseOnDemand]: 97/108 looper letters, 20 selfloop transitions, 7 changer transitions 30/125 dead transitions. [2023-11-10 11:48:02,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 125 transitions, 422 flow [2023-11-10 11:48:02,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-10 11:48:02,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-10 11:48:02,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 929 transitions. [2023-11-10 11:48:02,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8601851851851852 [2023-11-10 11:48:02,657 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 929 transitions. [2023-11-10 11:48:02,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 929 transitions. [2023-11-10 11:48:02,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:02,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 929 transitions. [2023-11-10 11:48:02,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 92.9) internal successors, (929), 10 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:02,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 108.0) internal successors, (1188), 11 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:02,663 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 108.0) internal successors, (1188), 11 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:02,663 INFO L175 Difference]: Start difference. First operand has 116 places, 86 transitions, 226 flow. Second operand 10 states and 929 transitions. [2023-11-10 11:48:02,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 125 transitions, 422 flow [2023-11-10 11:48:02,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 125 transitions, 392 flow, removed 8 selfloop flow, removed 11 redundant places. [2023-11-10 11:48:02,670 INFO L231 Difference]: Finished difference. Result has 114 places, 89 transitions, 262 flow [2023-11-10 11:48:02,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=262, PETRI_PLACES=114, PETRI_TRANSITIONS=89} [2023-11-10 11:48:02,672 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 15 predicate places. [2023-11-10 11:48:02,672 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 89 transitions, 262 flow [2023-11-10 11:48:02,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.16666666666667) internal successors, (535), 6 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:02,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:02,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:48:02,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-10 11:48:02,673 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 11:48:02,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:02,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1760052043, now seen corresponding path program 1 times [2023-11-10 11:48:02,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:02,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701948425] [2023-11-10 11:48:02,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:02,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:02,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:48:02,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:02,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701948425] [2023-11-10 11:48:02,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701948425] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:02,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:02,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 11:48:02,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154218349] [2023-11-10 11:48:02,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:02,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 11:48:02,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:02,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 11:48:02,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-10 11:48:02,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 108 [2023-11-10 11:48:02,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 89 transitions, 262 flow. Second operand has 7 states, 7 states have (on average 89.0) internal successors, (623), 7 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:02,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:02,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 108 [2023-11-10 11:48:02,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:03,044 INFO L124 PetriNetUnfolderBase]: 235/601 cut-off events. [2023-11-10 11:48:03,045 INFO L125 PetriNetUnfolderBase]: For 1119/1163 co-relation queries the response was YES. [2023-11-10 11:48:03,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1990 conditions, 601 events. 235/601 cut-off events. For 1119/1163 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3310 event pairs, 2 based on Foata normal form. 17/614 useless extension candidates. Maximal degree in co-relation 1948. Up to 288 conditions per place. [2023-11-10 11:48:03,050 INFO L140 encePairwiseOnDemand]: 98/108 looper letters, 21 selfloop transitions, 11 changer transitions 23/123 dead transitions. [2023-11-10 11:48:03,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 123 transitions, 609 flow [2023-11-10 11:48:03,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-10 11:48:03,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-10 11:48:03,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 927 transitions. [2023-11-10 11:48:03,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8583333333333333 [2023-11-10 11:48:03,053 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 927 transitions. [2023-11-10 11:48:03,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 927 transitions. [2023-11-10 11:48:03,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:03,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 927 transitions. [2023-11-10 11:48:03,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 92.7) internal successors, (927), 10 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:03,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 108.0) internal successors, (1188), 11 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:03,060 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 108.0) internal successors, (1188), 11 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:03,060 INFO L175 Difference]: Start difference. First operand has 114 places, 89 transitions, 262 flow. Second operand 10 states and 927 transitions. [2023-11-10 11:48:03,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 123 transitions, 609 flow [2023-11-10 11:48:03,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 123 transitions, 584 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-11-10 11:48:03,065 INFO L231 Difference]: Finished difference. Result has 118 places, 93 transitions, 350 flow [2023-11-10 11:48:03,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=350, PETRI_PLACES=118, PETRI_TRANSITIONS=93} [2023-11-10 11:48:03,067 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 19 predicate places. [2023-11-10 11:48:03,067 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 93 transitions, 350 flow [2023-11-10 11:48:03,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.0) internal successors, (623), 7 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:03,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:03,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:48:03,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-10 11:48:03,068 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 11:48:03,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:03,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1580467096, now seen corresponding path program 1 times [2023-11-10 11:48:03,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:03,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594855802] [2023-11-10 11:48:03,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:03,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:03,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:48:03,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:03,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594855802] [2023-11-10 11:48:03,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594855802] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:03,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:03,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-10 11:48:03,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559596816] [2023-11-10 11:48:03,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:03,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-10 11:48:03,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:03,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-10 11:48:03,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-10 11:48:03,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 108 [2023-11-10 11:48:03,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 93 transitions, 350 flow. Second operand has 8 states, 8 states have (on average 88.875) internal successors, (711), 8 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:03,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:03,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 108 [2023-11-10 11:48:03,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:03,411 INFO L124 PetriNetUnfolderBase]: 109/363 cut-off events. [2023-11-10 11:48:03,411 INFO L125 PetriNetUnfolderBase]: For 1791/1837 co-relation queries the response was YES. [2023-11-10 11:48:03,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1500 conditions, 363 events. 109/363 cut-off events. For 1791/1837 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1578 event pairs, 0 based on Foata normal form. 17/379 useless extension candidates. Maximal degree in co-relation 1454. Up to 146 conditions per place. [2023-11-10 11:48:03,415 INFO L140 encePairwiseOnDemand]: 98/108 looper letters, 21 selfloop transitions, 15 changer transitions 23/127 dead transitions. [2023-11-10 11:48:03,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 127 transitions, 858 flow [2023-11-10 11:48:03,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-10 11:48:03,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-10 11:48:03,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1018 transitions. [2023-11-10 11:48:03,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8569023569023569 [2023-11-10 11:48:03,419 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1018 transitions. [2023-11-10 11:48:03,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1018 transitions. [2023-11-10 11:48:03,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:03,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1018 transitions. [2023-11-10 11:48:03,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 92.54545454545455) internal successors, (1018), 11 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:03,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 108.0) internal successors, (1296), 12 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:03,424 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 108.0) internal successors, (1296), 12 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:03,425 INFO L175 Difference]: Start difference. First operand has 118 places, 93 transitions, 350 flow. Second operand 11 states and 1018 transitions. [2023-11-10 11:48:03,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 127 transitions, 858 flow [2023-11-10 11:48:03,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 127 transitions, 678 flow, removed 79 selfloop flow, removed 9 redundant places. [2023-11-10 11:48:03,431 INFO L231 Difference]: Finished difference. Result has 121 places, 97 transitions, 400 flow [2023-11-10 11:48:03,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=400, PETRI_PLACES=121, PETRI_TRANSITIONS=97} [2023-11-10 11:48:03,432 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 22 predicate places. [2023-11-10 11:48:03,433 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 97 transitions, 400 flow [2023-11-10 11:48:03,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 88.875) internal successors, (711), 8 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:03,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:03,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:48:03,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-10 11:48:03,434 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 11:48:03,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:03,434 INFO L85 PathProgramCache]: Analyzing trace with hash 705855786, now seen corresponding path program 1 times [2023-11-10 11:48:03,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:03,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705266146] [2023-11-10 11:48:03,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:03,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:03,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:48:03,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:03,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705266146] [2023-11-10 11:48:03,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705266146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:03,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:03,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-10 11:48:03,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216703131] [2023-11-10 11:48:03,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:03,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-10 11:48:03,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:03,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-10 11:48:03,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-10 11:48:03,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 108 [2023-11-10 11:48:03,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 97 transitions, 400 flow. Second operand has 9 states, 9 states have (on average 88.77777777777777) internal successors, (799), 9 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:03,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:03,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 108 [2023-11-10 11:48:03,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:03,786 INFO L124 PetriNetUnfolderBase]: 37/203 cut-off events. [2023-11-10 11:48:03,787 INFO L125 PetriNetUnfolderBase]: For 701/719 co-relation queries the response was YES. [2023-11-10 11:48:03,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 667 conditions, 203 events. 37/203 cut-off events. For 701/719 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 630 event pairs, 0 based on Foata normal form. 13/215 useless extension candidates. Maximal degree in co-relation 634. Up to 53 conditions per place. [2023-11-10 11:48:03,789 INFO L140 encePairwiseOnDemand]: 98/108 looper letters, 13 selfloop transitions, 19 changer transitions 15/115 dead transitions. [2023-11-10 11:48:03,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 115 transitions, 680 flow [2023-11-10 11:48:03,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-10 11:48:03,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-10 11:48:03,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1093 transitions. [2023-11-10 11:48:03,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8433641975308642 [2023-11-10 11:48:03,793 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1093 transitions. [2023-11-10 11:48:03,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1093 transitions. [2023-11-10 11:48:03,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:03,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1093 transitions. [2023-11-10 11:48:03,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 91.08333333333333) internal successors, (1093), 12 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:03,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 108.0) internal successors, (1404), 13 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:03,801 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 108.0) internal successors, (1404), 13 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:03,801 INFO L175 Difference]: Start difference. First operand has 121 places, 97 transitions, 400 flow. Second operand 12 states and 1093 transitions. [2023-11-10 11:48:03,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 115 transitions, 680 flow [2023-11-10 11:48:03,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 115 transitions, 540 flow, removed 53 selfloop flow, removed 12 redundant places. [2023-11-10 11:48:03,807 INFO L231 Difference]: Finished difference. Result has 122 places, 97 transitions, 370 flow [2023-11-10 11:48:03,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=370, PETRI_PLACES=122, PETRI_TRANSITIONS=97} [2023-11-10 11:48:03,807 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 23 predicate places. [2023-11-10 11:48:03,808 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 97 transitions, 370 flow [2023-11-10 11:48:03,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 88.77777777777777) internal successors, (799), 9 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:03,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:03,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:48:03,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-10 11:48:03,809 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 11:48:03,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:03,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1150312895, now seen corresponding path program 1 times [2023-11-10 11:48:03,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:03,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618731910] [2023-11-10 11:48:03,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:03,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:03,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:48:03,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:03,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618731910] [2023-11-10 11:48:03,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618731910] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:03,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:03,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 11:48:03,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962876553] [2023-11-10 11:48:03,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:03,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 11:48:03,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:03,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 11:48:03,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-10 11:48:03,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 108 [2023-11-10 11:48:03,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 97 transitions, 370 flow. Second operand has 7 states, 7 states have (on average 89.14285714285714) internal successors, (624), 7 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:03,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:03,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 108 [2023-11-10 11:48:03,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:04,071 INFO L124 PetriNetUnfolderBase]: 43/263 cut-off events. [2023-11-10 11:48:04,071 INFO L125 PetriNetUnfolderBase]: For 275/304 co-relation queries the response was YES. [2023-11-10 11:48:04,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 615 conditions, 263 events. 43/263 cut-off events. For 275/304 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 963 event pairs, 1 based on Foata normal form. 1/253 useless extension candidates. Maximal degree in co-relation 568. Up to 41 conditions per place. [2023-11-10 11:48:04,074 INFO L140 encePairwiseOnDemand]: 102/108 looper letters, 14 selfloop transitions, 1 changer transitions 8/105 dead transitions. [2023-11-10 11:48:04,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 105 transitions, 437 flow [2023-11-10 11:48:04,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-10 11:48:04,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-10 11:48:04,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 633 transitions. [2023-11-10 11:48:04,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8373015873015873 [2023-11-10 11:48:04,076 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 633 transitions. [2023-11-10 11:48:04,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 633 transitions. [2023-11-10 11:48:04,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:04,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 633 transitions. [2023-11-10 11:48:04,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.42857142857143) internal successors, (633), 7 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:04,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 108.0) internal successors, (864), 8 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:04,080 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 108.0) internal successors, (864), 8 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:04,080 INFO L175 Difference]: Start difference. First operand has 122 places, 97 transitions, 370 flow. Second operand 7 states and 633 transitions. [2023-11-10 11:48:04,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 105 transitions, 437 flow [2023-11-10 11:48:04,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 105 transitions, 311 flow, removed 31 selfloop flow, removed 17 redundant places. [2023-11-10 11:48:04,084 INFO L231 Difference]: Finished difference. Result has 112 places, 97 transitions, 257 flow [2023-11-10 11:48:04,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=257, PETRI_PLACES=112, PETRI_TRANSITIONS=97} [2023-11-10 11:48:04,085 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 13 predicate places. [2023-11-10 11:48:04,085 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 97 transitions, 257 flow [2023-11-10 11:48:04,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.14285714285714) internal successors, (624), 7 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:04,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:04,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:48:04,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-10 11:48:04,086 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 11:48:04,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:04,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1878719071, now seen corresponding path program 2 times [2023-11-10 11:48:04,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:04,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117776746] [2023-11-10 11:48:04,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:04,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:04,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:04,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:48:04,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:04,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117776746] [2023-11-10 11:48:04,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117776746] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:04,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:04,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 11:48:04,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79321546] [2023-11-10 11:48:04,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:04,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 11:48:04,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:04,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 11:48:04,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-10 11:48:04,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 108 [2023-11-10 11:48:04,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 97 transitions, 257 flow. Second operand has 7 states, 7 states have (on average 89.14285714285714) internal successors, (624), 7 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:04,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:04,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 108 [2023-11-10 11:48:04,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:04,334 INFO L124 PetriNetUnfolderBase]: 34/218 cut-off events. [2023-11-10 11:48:04,334 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-10 11:48:04,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 218 events. 34/218 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 832 event pairs, 1 based on Foata normal form. 1/210 useless extension candidates. Maximal degree in co-relation 328. Up to 30 conditions per place. [2023-11-10 11:48:04,335 INFO L140 encePairwiseOnDemand]: 102/108 looper letters, 0 selfloop transitions, 0 changer transitions 97/97 dead transitions. [2023-11-10 11:48:04,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 97 transitions, 288 flow [2023-11-10 11:48:04,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-10 11:48:04,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-10 11:48:04,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 626 transitions. [2023-11-10 11:48:04,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.828042328042328 [2023-11-10 11:48:04,337 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 626 transitions. [2023-11-10 11:48:04,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 626 transitions. [2023-11-10 11:48:04,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:04,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 626 transitions. [2023-11-10 11:48:04,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.42857142857143) internal successors, (626), 7 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:04,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 108.0) internal successors, (864), 8 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:04,341 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 108.0) internal successors, (864), 8 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:04,341 INFO L175 Difference]: Start difference. First operand has 112 places, 97 transitions, 257 flow. Second operand 7 states and 626 transitions. [2023-11-10 11:48:04,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 97 transitions, 288 flow [2023-11-10 11:48:04,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 97 transitions, 281 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-10 11:48:04,342 INFO L231 Difference]: Finished difference. Result has 108 places, 0 transitions, 0 flow [2023-11-10 11:48:04,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=108, PETRI_TRANSITIONS=0} [2023-11-10 11:48:04,344 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 9 predicate places. [2023-11-10 11:48:04,344 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 0 transitions, 0 flow [2023-11-10 11:48:04,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.14285714285714) internal successors, (624), 7 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:04,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-11-10 11:48:04,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-11-10 11:48:04,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-10 11:48:04,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-11-10 11:48:04,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-11-10 11:48:04,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-10 11:48:04,350 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:48:04,353 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-10 11:48:04,353 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-10 11:48:04,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 11:48:04 BasicIcfg [2023-11-10 11:48:04,357 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-10 11:48:04,357 INFO L158 Benchmark]: Toolchain (without parser) took 5851.27ms. Allocated memory was 220.2MB in the beginning and 351.3MB in the end (delta: 131.1MB). Free memory was 171.9MB in the beginning and 312.3MB in the end (delta: -140.4MB). Peak memory consumption was 189.8MB. Max. memory is 8.0GB. [2023-11-10 11:48:04,357 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 220.2MB. Free memory is still 172.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-10 11:48:04,358 INFO L158 Benchmark]: CACSL2BoogieTranslator took 395.89ms. Allocated memory is still 220.2MB. Free memory was 171.9MB in the beginning and 151.3MB in the end (delta: 20.6MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-10 11:48:04,358 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.57ms. Allocated memory is still 220.2MB. Free memory was 151.3MB in the beginning and 149.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-10 11:48:04,358 INFO L158 Benchmark]: Boogie Preprocessor took 36.67ms. Allocated memory is still 220.2MB. Free memory was 149.2MB in the beginning and 147.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-10 11:48:04,358 INFO L158 Benchmark]: RCFGBuilder took 392.45ms. Allocated memory is still 220.2MB. Free memory was 147.8MB in the beginning and 133.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-11-10 11:48:04,360 INFO L158 Benchmark]: TraceAbstraction took 4958.38ms. Allocated memory was 220.2MB in the beginning and 351.3MB in the end (delta: 131.1MB). Free memory was 132.4MB in the beginning and 312.3MB in the end (delta: -179.8MB). Peak memory consumption was 151.0MB. Max. memory is 8.0GB. [2023-11-10 11:48:04,361 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 220.2MB. Free memory is still 172.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 395.89ms. Allocated memory is still 220.2MB. Free memory was 171.9MB in the beginning and 151.3MB in the end (delta: 20.6MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 62.57ms. Allocated memory is still 220.2MB. Free memory was 151.3MB in the beginning and 149.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.67ms. Allocated memory is still 220.2MB. Free memory was 149.2MB in the beginning and 147.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 392.45ms. Allocated memory is still 220.2MB. Free memory was 147.8MB in the beginning and 133.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 4958.38ms. Allocated memory was 220.2MB in the beginning and 351.3MB in the end (delta: 131.1MB). Free memory was 132.4MB in the beginning and 312.3MB in the end (delta: -179.8MB). Peak memory consumption was 151.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 141 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.8s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 395 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 395 mSDsluCounter, 430 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 334 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 701 IncrementalHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 96 mSDtfsCounter, 701 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=400occurred in iteration=7, InterpolantAutomatonStates: 96, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 683 NumberOfCodeBlocks, 683 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 673 ConstructedInterpolants, 0 QuantifiedInterpolants, 2535 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-10 11:48:04,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...