/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/safe028_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 11:47:58,041 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-10 11:47:58,079 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 11:47:58,100 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-10 11:47:58,101 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-10 11:47:58,101 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-10 11:47:58,101 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-10 11:47:58,102 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-10 11:47:58,102 INFO L153 SettingsManager]: * Use SBE=true [2023-11-10 11:47:58,102 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-10 11:47:58,103 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-10 11:47:58,103 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-10 11:47:58,103 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-10 11:47:58,103 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-10 11:47:58,104 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-10 11:47:58,104 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-10 11:47:58,104 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-10 11:47:58,108 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-10 11:47:58,108 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-10 11:47:58,108 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-10 11:47:58,111 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-10 11:47:58,112 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-10 11:47:58,112 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-10 11:47:58,113 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-10 11:47:58,113 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-10 11:47:58,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 11:47:58,113 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-10 11:47:58,114 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-10 11:47:58,114 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-10 11:47:58,114 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-10 11:47:58,115 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-10 11:47:58,115 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-10 11:47:58,115 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-10 11:47:58,115 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-10 11:47:58,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-10 11:47:58,305 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-10 11:47:58,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-10 11:47:58,307 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-10 11:47:58,307 INFO L274 PluginConnector]: CDTParser initialized [2023-11-10 11:47:58,308 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-10 11:47:59,234 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-10 11:47:59,459 INFO L384 CDTParser]: Found 1 translation units. [2023-11-10 11:47:59,460 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-10 11:47:59,474 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27729651d/97f4366955fd44e99aa357f1a42afde0/FLAG65adfc738 [2023-11-10 11:47:59,485 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27729651d/97f4366955fd44e99aa357f1a42afde0 [2023-11-10 11:47:59,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-10 11:47:59,487 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-10 11:47:59,488 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-10 11:47:59,488 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-10 11:47:59,494 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-10 11:47:59,494 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:47:59" (1/1) ... [2023-11-10 11:47:59,495 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e3ddb66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:59, skipping insertion in model container [2023-11-10 11:47:59,495 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:47:59" (1/1) ... [2023-11-10 11:47:59,536 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-10 11:47:59,638 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/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-10 11:47:59,788 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 11:47:59,798 INFO L202 MainTranslator]: Completed pre-run [2023-11-10 11:47:59,809 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/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-10 11:47:59,838 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 11:47:59,861 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-10 11:47:59,862 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-10 11:47:59,867 INFO L206 MainTranslator]: Completed translation [2023-11-10 11:47:59,867 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:59 WrapperNode [2023-11-10 11:47:59,867 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-10 11:47:59,868 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-10 11:47:59,868 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-10 11:47:59,868 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-10 11:47:59,873 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:59" (1/1) ... [2023-11-10 11:47:59,891 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:59" (1/1) ... [2023-11-10 11:47:59,904 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-11-10 11:47:59,904 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-10 11:47:59,905 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-10 11:47:59,905 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-10 11:47:59,905 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-10 11:47:59,910 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:59" (1/1) ... [2023-11-10 11:47:59,910 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:59" (1/1) ... [2023-11-10 11:47:59,912 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:59" (1/1) ... [2023-11-10 11:47:59,912 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:59" (1/1) ... [2023-11-10 11:47:59,916 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:59" (1/1) ... [2023-11-10 11:47:59,917 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:59" (1/1) ... [2023-11-10 11:47:59,918 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:59" (1/1) ... [2023-11-10 11:47:59,919 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:59" (1/1) ... [2023-11-10 11:47:59,921 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-10 11:47:59,921 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-10 11:47:59,922 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-10 11:47:59,922 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-10 11:47:59,933 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:59" (1/1) ... [2023-11-10 11:47:59,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 11:47:59,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 11:47:59,958 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 11:47:59,979 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 11:47:59,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-10 11:47:59,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-10 11:47:59,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-10 11:47:59,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-10 11:47:59,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-10 11:48:00,000 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-10 11:48:00,001 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-10 11:48:00,001 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-10 11:48:00,001 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-10 11:48:00,001 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-10 11:48:00,001 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-10 11:48:00,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-10 11:48:00,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-10 11:48:00,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-10 11:48:00,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-10 11:48:00,004 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 11:48:00,121 INFO L236 CfgBuilder]: Building ICFG [2023-11-10 11:48:00,122 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-10 11:48:00,287 INFO L277 CfgBuilder]: Performing block encoding [2023-11-10 11:48:00,294 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-10 11:48:00,295 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-10 11:48:00,297 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:48:00 BoogieIcfgContainer [2023-11-10 11:48:00,297 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-10 11:48:00,299 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-10 11:48:00,299 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-10 11:48:00,301 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-10 11:48:00,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 11:47:59" (1/3) ... [2023-11-10 11:48:00,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d2a1d64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:48:00, skipping insertion in model container [2023-11-10 11:48:00,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:59" (2/3) ... [2023-11-10 11:48:00,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d2a1d64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:48:00, skipping insertion in model container [2023-11-10 11:48:00,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:48:00" (3/3) ... [2023-11-10 11:48:00,303 INFO L112 eAbstractionObserver]: Analyzing ICFG safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-10 11:48:00,315 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-10 11:48:00,316 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-10 11:48:00,316 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-10 11:48:00,369 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-10 11:48:00,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 196 flow [2023-11-10 11:48:00,441 INFO L124 PetriNetUnfolderBase]: 2/89 cut-off events. [2023-11-10 11:48:00,441 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-10 11:48:00,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2023-11-10 11:48:00,452 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 196 flow [2023-11-10 11:48:00,455 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 74 transitions, 157 flow [2023-11-10 11:48:00,462 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 11:48:00,466 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;@5429a6db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 11:48:00,467 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-10 11:48:00,482 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 11:48:00,482 INFO L124 PetriNetUnfolderBase]: 1/73 cut-off events. [2023-11-10 11:48:00,482 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-10 11:48:00,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:00,483 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] [2023-11-10 11:48:00,483 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 1 more)] === [2023-11-10 11:48:00,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:00,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1627506857, now seen corresponding path program 1 times [2023-11-10 11:48:00,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:00,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395142566] [2023-11-10 11:48:00,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:00,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:01,086 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 11:48:01,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:01,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395142566] [2023-11-10 11:48:01,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395142566] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:01,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:01,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 11:48:01,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597661322] [2023-11-10 11:48:01,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:01,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 11:48:01,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:01,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 11:48:01,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-10 11:48:01,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2023-11-10 11:48:01,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 157 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 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 11:48:01,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:01,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2023-11-10 11:48:01,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:01,299 INFO L124 PetriNetUnfolderBase]: 3/89 cut-off events. [2023-11-10 11:48:01,300 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-10 11:48:01,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 89 events. 3/89 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 98 event pairs, 0 based on Foata normal form. 4/92 useless extension candidates. Maximal degree in co-relation 91. Up to 7 conditions per place. [2023-11-10 11:48:01,302 INFO L140 encePairwiseOnDemand]: 85/92 looper letters, 9 selfloop transitions, 2 changer transitions 11/83 dead transitions. [2023-11-10 11:48:01,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 83 transitions, 217 flow [2023-11-10 11:48:01,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-10 11:48:01,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-10 11:48:01,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 700 transitions. [2023-11-10 11:48:01,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8454106280193237 [2023-11-10 11:48:01,319 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 700 transitions. [2023-11-10 11:48:01,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 700 transitions. [2023-11-10 11:48:01,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:01,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 700 transitions. [2023-11-10 11:48:01,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.77777777777777) internal successors, (700), 9 states have internal predecessors, (700), 0 states have call successors, (0), 0 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 11:48:01,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 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 11:48:01,335 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 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 11:48:01,336 INFO L175 Difference]: Start difference. First operand has 83 places, 74 transitions, 157 flow. Second operand 9 states and 700 transitions. [2023-11-10 11:48:01,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 83 transitions, 217 flow [2023-11-10 11:48:01,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 83 transitions, 214 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-10 11:48:01,346 INFO L231 Difference]: Finished difference. Result has 95 places, 72 transitions, 170 flow [2023-11-10 11:48:01,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=170, PETRI_PLACES=95, PETRI_TRANSITIONS=72} [2023-11-10 11:48:01,350 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 12 predicate places. [2023-11-10 11:48:01,350 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 72 transitions, 170 flow [2023-11-10 11:48:01,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 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 11:48:01,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:01,351 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] [2023-11-10 11:48:01,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-10 11:48:01,353 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 1 more)] === [2023-11-10 11:48:01,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:01,354 INFO L85 PathProgramCache]: Analyzing trace with hash -330656424, now seen corresponding path program 1 times [2023-11-10 11:48:01,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:01,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669390168] [2023-11-10 11:48:01,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:01,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:01,575 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 11:48:01,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:01,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669390168] [2023-11-10 11:48:01,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669390168] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:01,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:01,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 11:48:01,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919618570] [2023-11-10 11:48:01,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:01,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 11:48:01,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:01,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 11:48:01,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-10 11:48:01,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 92 [2023-11-10 11:48:01,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 72 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 71.0) internal successors, (497), 7 states have internal predecessors, (497), 0 states have call successors, (0), 0 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 11:48:01,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:01,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 92 [2023-11-10 11:48:01,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:01,984 INFO L124 PetriNetUnfolderBase]: 115/387 cut-off events. [2023-11-10 11:48:01,985 INFO L125 PetriNetUnfolderBase]: For 93/142 co-relation queries the response was YES. [2023-11-10 11:48:01,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 729 conditions, 387 events. 115/387 cut-off events. For 93/142 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1858 event pairs, 8 based on Foata normal form. 10/387 useless extension candidates. Maximal degree in co-relation 689. Up to 79 conditions per place. [2023-11-10 11:48:01,988 INFO L140 encePairwiseOnDemand]: 81/92 looper letters, 21 selfloop transitions, 10 changer transitions 44/130 dead transitions. [2023-11-10 11:48:01,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 130 transitions, 491 flow [2023-11-10 11:48:01,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-10 11:48:01,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-10 11:48:01,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1252 transitions. [2023-11-10 11:48:01,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8005115089514067 [2023-11-10 11:48:01,993 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1252 transitions. [2023-11-10 11:48:01,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1252 transitions. [2023-11-10 11:48:01,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:01,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1252 transitions. [2023-11-10 11:48:01,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 73.6470588235294) internal successors, (1252), 17 states have internal predecessors, (1252), 0 states have call successors, (0), 0 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 11:48:01,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 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 11:48:01,999 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 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 11:48:01,999 INFO L175 Difference]: Start difference. First operand has 95 places, 72 transitions, 170 flow. Second operand 17 states and 1252 transitions. [2023-11-10 11:48:01,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 130 transitions, 491 flow [2023-11-10 11:48:02,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 130 transitions, 429 flow, removed 28 selfloop flow, removed 8 redundant places. [2023-11-10 11:48:02,005 INFO L231 Difference]: Finished difference. Result has 111 places, 78 transitions, 263 flow [2023-11-10 11:48:02,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=263, PETRI_PLACES=111, PETRI_TRANSITIONS=78} [2023-11-10 11:48:02,007 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 28 predicate places. [2023-11-10 11:48:02,007 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 78 transitions, 263 flow [2023-11-10 11:48:02,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.0) internal successors, (497), 7 states have internal predecessors, (497), 0 states have call successors, (0), 0 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 11:48:02,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:02,008 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] [2023-11-10 11:48:02,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-10 11:48:02,008 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 1 more)] === [2023-11-10 11:48:02,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:02,009 INFO L85 PathProgramCache]: Analyzing trace with hash -976404210, now seen corresponding path program 1 times [2023-11-10 11:48:02,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:02,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440022302] [2023-11-10 11:48:02,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:02,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:02,188 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 11:48:02,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:02,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440022302] [2023-11-10 11:48:02,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440022302] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:02,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:02,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-10 11:48:02,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696484965] [2023-11-10 11:48:02,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:02,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-10 11:48:02,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:02,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-10 11:48:02,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-10 11:48:02,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 92 [2023-11-10 11:48:02,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 78 transitions, 263 flow. Second operand has 8 states, 8 states have (on average 70.875) internal successors, (567), 8 states have internal predecessors, (567), 0 states have call successors, (0), 0 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 11:48:02,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:02,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 92 [2023-11-10 11:48:02,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:02,353 INFO L124 PetriNetUnfolderBase]: 63/258 cut-off events. [2023-11-10 11:48:02,354 INFO L125 PetriNetUnfolderBase]: For 1526/1750 co-relation queries the response was YES. [2023-11-10 11:48:02,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1013 conditions, 258 events. 63/258 cut-off events. For 1526/1750 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1065 event pairs, 13 based on Foata normal form. 6/254 useless extension candidates. Maximal degree in co-relation 961. Up to 65 conditions per place. [2023-11-10 11:48:02,358 INFO L140 encePairwiseOnDemand]: 84/92 looper letters, 16 selfloop transitions, 4 changer transitions 31/106 dead transitions. [2023-11-10 11:48:02,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 106 transitions, 732 flow [2023-11-10 11:48:02,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-10 11:48:02,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-10 11:48:02,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 738 transitions. [2023-11-10 11:48:02,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8021739130434783 [2023-11-10 11:48:02,360 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 738 transitions. [2023-11-10 11:48:02,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 738 transitions. [2023-11-10 11:48:02,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:02,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 738 transitions. [2023-11-10 11:48:02,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 73.8) internal successors, (738), 10 states have internal predecessors, (738), 0 states have call successors, (0), 0 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 11:48:02,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 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 11:48:02,364 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 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 11:48:02,364 INFO L175 Difference]: Start difference. First operand has 111 places, 78 transitions, 263 flow. Second operand 10 states and 738 transitions. [2023-11-10 11:48:02,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 106 transitions, 732 flow [2023-11-10 11:48:02,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 106 transitions, 573 flow, removed 75 selfloop flow, removed 10 redundant places. [2023-11-10 11:48:02,371 INFO L231 Difference]: Finished difference. Result has 106 places, 72 transitions, 224 flow [2023-11-10 11:48:02,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=224, PETRI_PLACES=106, PETRI_TRANSITIONS=72} [2023-11-10 11:48:02,375 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 23 predicate places. [2023-11-10 11:48:02,376 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 72 transitions, 224 flow [2023-11-10 11:48:02,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 70.875) internal successors, (567), 8 states have internal predecessors, (567), 0 states have call successors, (0), 0 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 11:48:02,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:02,376 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] [2023-11-10 11:48:02,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-10 11:48:02,377 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 1 more)] === [2023-11-10 11:48:02,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:02,377 INFO L85 PathProgramCache]: Analyzing trace with hash 623615961, now seen corresponding path program 1 times [2023-11-10 11:48:02,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:02,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183597236] [2023-11-10 11:48:02,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:02,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:02,494 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 11:48:02,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:02,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183597236] [2023-11-10 11:48:02,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183597236] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:02,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:02,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 11:48:02,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132141284] [2023-11-10 11:48:02,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:02,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 11:48:02,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:02,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 11:48:02,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-10 11:48:02,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 92 [2023-11-10 11:48:02,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 72 transitions, 224 flow. Second operand has 6 states, 6 states have (on average 75.0) internal successors, (450), 6 states have internal predecessors, (450), 0 states have call successors, (0), 0 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 11:48:02,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:02,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 92 [2023-11-10 11:48:02,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:02,597 INFO L124 PetriNetUnfolderBase]: 182/505 cut-off events. [2023-11-10 11:48:02,597 INFO L125 PetriNetUnfolderBase]: For 631/669 co-relation queries the response was YES. [2023-11-10 11:48:02,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1222 conditions, 505 events. 182/505 cut-off events. For 631/669 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2897 event pairs, 37 based on Foata normal form. 10/487 useless extension candidates. Maximal degree in co-relation 1172. Up to 141 conditions per place. [2023-11-10 11:48:02,601 INFO L140 encePairwiseOnDemand]: 83/92 looper letters, 24 selfloop transitions, 14 changer transitions 4/99 dead transitions. [2023-11-10 11:48:02,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 99 transitions, 366 flow [2023-11-10 11:48:02,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-10 11:48:02,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-10 11:48:02,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 701 transitions. [2023-11-10 11:48:02,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8466183574879227 [2023-11-10 11:48:02,603 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 701 transitions. [2023-11-10 11:48:02,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 701 transitions. [2023-11-10 11:48:02,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:02,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 701 transitions. [2023-11-10 11:48:02,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.88888888888889) internal successors, (701), 9 states have internal predecessors, (701), 0 states have call successors, (0), 0 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 11:48:02,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 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 11:48:02,606 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 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 11:48:02,606 INFO L175 Difference]: Start difference. First operand has 106 places, 72 transitions, 224 flow. Second operand 9 states and 701 transitions. [2023-11-10 11:48:02,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 99 transitions, 366 flow [2023-11-10 11:48:02,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 99 transitions, 326 flow, removed 12 selfloop flow, removed 14 redundant places. [2023-11-10 11:48:02,611 INFO L231 Difference]: Finished difference. Result has 98 places, 84 transitions, 284 flow [2023-11-10 11:48:02,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=284, PETRI_PLACES=98, PETRI_TRANSITIONS=84} [2023-11-10 11:48:02,613 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 15 predicate places. [2023-11-10 11:48:02,613 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 84 transitions, 284 flow [2023-11-10 11:48:02,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.0) internal successors, (450), 6 states have internal predecessors, (450), 0 states have call successors, (0), 0 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 11:48:02,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:02,613 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] [2023-11-10 11:48:02,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-10 11:48:02,614 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 1 more)] === [2023-11-10 11:48:02,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:02,616 INFO L85 PathProgramCache]: Analyzing trace with hash 282914326, now seen corresponding path program 1 times [2023-11-10 11:48:02,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:02,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315679175] [2023-11-10 11:48:02,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:02,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:02,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:02,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:48:02,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:02,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315679175] [2023-11-10 11:48:02,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315679175] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:02,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:02,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 11:48:02,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186726757] [2023-11-10 11:48:02,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:02,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 11:48:02,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:02,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 11:48:02,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-10 11:48:02,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 92 [2023-11-10 11:48:02,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 84 transitions, 284 flow. Second operand has 7 states, 7 states have (on average 74.85714285714286) internal successors, (524), 7 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 11:48:02,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:02,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 92 [2023-11-10 11:48:02,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:02,873 INFO L124 PetriNetUnfolderBase]: 129/400 cut-off events. [2023-11-10 11:48:02,873 INFO L125 PetriNetUnfolderBase]: For 812/1003 co-relation queries the response was YES. [2023-11-10 11:48:02,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1257 conditions, 400 events. 129/400 cut-off events. For 812/1003 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2220 event pairs, 9 based on Foata normal form. 31/417 useless extension candidates. Maximal degree in co-relation 1214. Up to 136 conditions per place. [2023-11-10 11:48:02,877 INFO L140 encePairwiseOnDemand]: 83/92 looper letters, 23 selfloop transitions, 27 changer transitions 8/115 dead transitions. [2023-11-10 11:48:02,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 115 transitions, 593 flow [2023-11-10 11:48:02,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-10 11:48:02,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-10 11:48:02,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 932 transitions. [2023-11-10 11:48:02,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8442028985507246 [2023-11-10 11:48:02,882 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 932 transitions. [2023-11-10 11:48:02,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 932 transitions. [2023-11-10 11:48:02,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:02,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 932 transitions. [2023-11-10 11:48:02,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 77.66666666666667) internal successors, (932), 12 states have internal predecessors, (932), 0 states have call successors, (0), 0 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 11:48:02,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 92.0) internal successors, (1196), 13 states have internal predecessors, (1196), 0 states have call successors, (0), 0 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 11:48:02,888 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 92.0) internal successors, (1196), 13 states have internal predecessors, (1196), 0 states have call successors, (0), 0 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 11:48:02,888 INFO L175 Difference]: Start difference. First operand has 98 places, 84 transitions, 284 flow. Second operand 12 states and 932 transitions. [2023-11-10 11:48:02,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 115 transitions, 593 flow [2023-11-10 11:48:02,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 115 transitions, 591 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-10 11:48:02,891 INFO L231 Difference]: Finished difference. Result has 113 places, 100 transitions, 495 flow [2023-11-10 11:48:02,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=495, PETRI_PLACES=113, PETRI_TRANSITIONS=100} [2023-11-10 11:48:02,893 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 30 predicate places. [2023-11-10 11:48:02,893 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 100 transitions, 495 flow [2023-11-10 11:48:02,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.85714285714286) internal successors, (524), 7 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 11:48:02,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:02,893 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] [2023-11-10 11:48:02,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-10 11:48:02,894 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 1 more)] === [2023-11-10 11:48:02,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:02,895 INFO L85 PathProgramCache]: Analyzing trace with hash -554986657, now seen corresponding path program 1 times [2023-11-10 11:48:02,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:02,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985426777] [2023-11-10 11:48:02,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:02,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:02,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:03,028 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 11:48:03,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:03,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985426777] [2023-11-10 11:48:03,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985426777] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:03,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:03,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-10 11:48:03,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290326711] [2023-11-10 11:48:03,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:03,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-10 11:48:03,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:03,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-10 11:48:03,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-10 11:48:03,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 92 [2023-11-10 11:48:03,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 100 transitions, 495 flow. Second operand has 8 states, 8 states have (on average 74.75) internal successors, (598), 8 states have internal predecessors, (598), 0 states have call successors, (0), 0 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 11:48:03,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:03,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 92 [2023-11-10 11:48:03,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:03,195 INFO L124 PetriNetUnfolderBase]: 86/334 cut-off events. [2023-11-10 11:48:03,195 INFO L125 PetriNetUnfolderBase]: For 1260/1573 co-relation queries the response was YES. [2023-11-10 11:48:03,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1279 conditions, 334 events. 86/334 cut-off events. For 1260/1573 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1843 event pairs, 1 based on Foata normal form. 42/363 useless extension candidates. Maximal degree in co-relation 1229. Up to 102 conditions per place. [2023-11-10 11:48:03,198 INFO L140 encePairwiseOnDemand]: 83/92 looper letters, 18 selfloop transitions, 32 changer transitions 15/122 dead transitions. [2023-11-10 11:48:03,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 122 transitions, 775 flow [2023-11-10 11:48:03,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-10 11:48:03,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-10 11:48:03,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1150 transitions. [2023-11-10 11:48:03,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2023-11-10 11:48:03,200 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1150 transitions. [2023-11-10 11:48:03,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1150 transitions. [2023-11-10 11:48:03,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:03,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1150 transitions. [2023-11-10 11:48:03,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 76.66666666666667) internal successors, (1150), 15 states have internal predecessors, (1150), 0 states have call successors, (0), 0 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 11:48:03,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 92.0) internal successors, (1472), 16 states have internal predecessors, (1472), 0 states have call successors, (0), 0 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 11:48:03,206 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 92.0) internal successors, (1472), 16 states have internal predecessors, (1472), 0 states have call successors, (0), 0 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 11:48:03,206 INFO L175 Difference]: Start difference. First operand has 113 places, 100 transitions, 495 flow. Second operand 15 states and 1150 transitions. [2023-11-10 11:48:03,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 122 transitions, 775 flow [2023-11-10 11:48:03,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 122 transitions, 695 flow, removed 32 selfloop flow, removed 5 redundant places. [2023-11-10 11:48:03,213 INFO L231 Difference]: Finished difference. Result has 128 places, 101 transitions, 523 flow [2023-11-10 11:48:03,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=523, PETRI_PLACES=128, PETRI_TRANSITIONS=101} [2023-11-10 11:48:03,216 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 45 predicate places. [2023-11-10 11:48:03,216 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 101 transitions, 523 flow [2023-11-10 11:48:03,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 74.75) internal successors, (598), 8 states have internal predecessors, (598), 0 states have call successors, (0), 0 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 11:48:03,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:03,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:48:03,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-10 11:48:03,217 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 1 more)] === [2023-11-10 11:48:03,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:03,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1556144856, now seen corresponding path program 1 times [2023-11-10 11:48:03,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:03,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451142010] [2023-11-10 11:48:03,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:03,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:03,329 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 11:48:03,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:03,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451142010] [2023-11-10 11:48:03,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451142010] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:03,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:03,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 11:48:03,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596181078] [2023-11-10 11:48:03,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:03,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 11:48:03,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:03,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 11:48:03,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-10 11:48:03,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 92 [2023-11-10 11:48:03,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 101 transitions, 523 flow. Second operand has 7 states, 7 states have (on average 71.42857142857143) internal successors, (500), 7 states have internal predecessors, (500), 0 states have call successors, (0), 0 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 11:48:03,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:03,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 92 [2023-11-10 11:48:03,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:03,451 INFO L124 PetriNetUnfolderBase]: 107/531 cut-off events. [2023-11-10 11:48:03,451 INFO L125 PetriNetUnfolderBase]: For 1467/1509 co-relation queries the response was YES. [2023-11-10 11:48:03,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1732 conditions, 531 events. 107/531 cut-off events. For 1467/1509 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3767 event pairs, 2 based on Foata normal form. 1/512 useless extension candidates. Maximal degree in co-relation 1673. Up to 77 conditions per place. [2023-11-10 11:48:03,455 INFO L140 encePairwiseOnDemand]: 82/92 looper letters, 16 selfloop transitions, 6 changer transitions 4/110 dead transitions. [2023-11-10 11:48:03,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 110 transitions, 614 flow [2023-11-10 11:48:03,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-10 11:48:03,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-10 11:48:03,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 579 transitions. [2023-11-10 11:48:03,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7866847826086957 [2023-11-10 11:48:03,457 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 579 transitions. [2023-11-10 11:48:03,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 579 transitions. [2023-11-10 11:48:03,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:03,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 579 transitions. [2023-11-10 11:48:03,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 72.375) internal successors, (579), 8 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:03,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 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 11:48:03,460 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 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 11:48:03,460 INFO L175 Difference]: Start difference. First operand has 128 places, 101 transitions, 523 flow. Second operand 8 states and 579 transitions. [2023-11-10 11:48:03,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 110 transitions, 614 flow [2023-11-10 11:48:03,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 110 transitions, 493 flow, removed 27 selfloop flow, removed 18 redundant places. [2023-11-10 11:48:03,469 INFO L231 Difference]: Finished difference. Result has 120 places, 104 transitions, 458 flow [2023-11-10 11:48:03,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=458, PETRI_PLACES=120, PETRI_TRANSITIONS=104} [2023-11-10 11:48:03,470 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 37 predicate places. [2023-11-10 11:48:03,470 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 104 transitions, 458 flow [2023-11-10 11:48:03,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.42857142857143) internal successors, (500), 7 states have internal predecessors, (500), 0 states have call successors, (0), 0 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 11:48:03,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:03,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:48:03,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-10 11:48:03,471 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 1 more)] === [2023-11-10 11:48:03,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:03,471 INFO L85 PathProgramCache]: Analyzing trace with hash -158121950, now seen corresponding path program 2 times [2023-11-10 11:48:03,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:03,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226973358] [2023-11-10 11:48:03,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:03,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:03,614 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 11:48:03,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:03,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226973358] [2023-11-10 11:48:03,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226973358] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:03,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:03,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 11:48:03,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979349572] [2023-11-10 11:48:03,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:03,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 11:48:03,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:03,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 11:48:03,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-10 11:48:03,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 92 [2023-11-10 11:48:03,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 104 transitions, 458 flow. Second operand has 7 states, 7 states have (on average 71.42857142857143) internal successors, (500), 7 states have internal predecessors, (500), 0 states have call successors, (0), 0 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 11:48:03,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:03,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 92 [2023-11-10 11:48:03,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:03,743 INFO L124 PetriNetUnfolderBase]: 114/546 cut-off events. [2023-11-10 11:48:03,743 INFO L125 PetriNetUnfolderBase]: For 713/726 co-relation queries the response was YES. [2023-11-10 11:48:03,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1450 conditions, 546 events. 114/546 cut-off events. For 713/726 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4089 event pairs, 0 based on Foata normal form. 1/520 useless extension candidates. Maximal degree in co-relation 1430. Up to 70 conditions per place. [2023-11-10 11:48:03,746 INFO L140 encePairwiseOnDemand]: 83/92 looper letters, 0 selfloop transitions, 0 changer transitions 107/107 dead transitions. [2023-11-10 11:48:03,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 107 transitions, 527 flow [2023-11-10 11:48:03,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-10 11:48:03,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-10 11:48:03,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 574 transitions. [2023-11-10 11:48:03,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.779891304347826 [2023-11-10 11:48:03,747 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 574 transitions. [2023-11-10 11:48:03,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 574 transitions. [2023-11-10 11:48:03,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:03,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 574 transitions. [2023-11-10 11:48:03,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 71.75) internal successors, (574), 8 states have internal predecessors, (574), 0 states have call successors, (0), 0 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 11:48:03,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 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 11:48:03,750 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 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 11:48:03,750 INFO L175 Difference]: Start difference. First operand has 120 places, 104 transitions, 458 flow. Second operand 8 states and 574 transitions. [2023-11-10 11:48:03,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 107 transitions, 527 flow [2023-11-10 11:48:03,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 107 transitions, 516 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-10 11:48:03,756 INFO L231 Difference]: Finished difference. Result has 118 places, 0 transitions, 0 flow [2023-11-10 11:48:03,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=118, PETRI_TRANSITIONS=0} [2023-11-10 11:48:03,758 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 35 predicate places. [2023-11-10 11:48:03,758 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 0 transitions, 0 flow [2023-11-10 11:48:03,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.42857142857143) internal successors, (500), 7 states have internal predecessors, (500), 0 states have call successors, (0), 0 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 11:48:03,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-10 11:48:03,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-10 11:48:03,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-10 11:48:03,761 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-10 11:48:03,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-10 11:48:03,761 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2023-11-10 11:48:03,763 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-10 11:48:03,763 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-10 11:48:03,773 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 11:48:03 BasicIcfg [2023-11-10 11:48:03,773 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-10 11:48:03,773 INFO L158 Benchmark]: Toolchain (without parser) took 4285.92ms. Allocated memory was 265.3MB in the beginning and 318.8MB in the end (delta: 53.5MB). Free memory was 229.9MB in the beginning and 257.7MB in the end (delta: -27.7MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2023-11-10 11:48:03,773 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 215.0MB. Free memory is still 169.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-10 11:48:03,774 INFO L158 Benchmark]: CACSL2BoogieTranslator took 379.03ms. Allocated memory is still 265.3MB. Free memory was 229.5MB in the beginning and 209.5MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-10 11:48:03,774 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.69ms. Allocated memory is still 265.3MB. Free memory was 209.5MB in the beginning and 207.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-10 11:48:03,776 INFO L158 Benchmark]: Boogie Preprocessor took 16.17ms. Allocated memory is still 265.3MB. Free memory was 207.4MB in the beginning and 205.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-10 11:48:03,776 INFO L158 Benchmark]: RCFGBuilder took 375.85ms. Allocated memory is still 265.3MB. Free memory was 205.8MB in the beginning and 192.2MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-11-10 11:48:03,777 INFO L158 Benchmark]: TraceAbstraction took 3474.04ms. Allocated memory was 265.3MB in the beginning and 318.8MB in the end (delta: 53.5MB). Free memory was 191.2MB in the beginning and 257.7MB in the end (delta: -66.5MB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-10 11:48:03,778 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 215.0MB. Free memory is still 169.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 379.03ms. Allocated memory is still 265.3MB. Free memory was 229.5MB in the beginning and 209.5MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.69ms. Allocated memory is still 265.3MB. Free memory was 209.5MB in the beginning and 207.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.17ms. Allocated memory is still 265.3MB. Free memory was 207.4MB in the beginning and 205.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 375.85ms. Allocated memory is still 265.3MB. Free memory was 205.8MB in the beginning and 192.2MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 3474.04ms. Allocated memory was 265.3MB in the beginning and 318.8MB in the end (delta: 53.5MB). Free memory was 191.2MB in the beginning and 257.7MB in the end (delta: -66.5MB). There was no memory consumed. 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 7 procedures, 118 locations, 4 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: 3.4s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 320 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 320 mSDsluCounter, 377 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 292 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 489 IncrementalHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 85 mSDtfsCounter, 489 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=523occurred in iteration=6, InterpolantAutomatonStates: 88, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 462 NumberOfCodeBlocks, 462 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 454 ConstructedInterpolants, 0 QuantifiedInterpolants, 1552 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 11:48:03,796 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...