/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:10:03,632 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:10:03,702 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-SemanticLbe.epf [2023-11-17 15:10:03,728 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:10:03,729 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:10:03,729 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:10:03,729 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:10:03,730 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:10:03,730 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:10:03,733 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:10:03,734 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:10:03,734 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:10:03,734 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:10:03,735 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:10:03,736 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:10:03,736 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:10:03,736 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:10:03,736 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:10:03,736 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:10:03,736 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:10:03,737 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:10:03,737 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:10:03,737 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:10:03,738 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:10:03,738 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:10:03,738 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:10:03,738 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:10:03,738 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:10:03,738 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:10:03,739 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:10:03,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:10:03,740 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:10:03,740 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:10:03,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:10:03,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:10:03,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:10:03,966 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:10:03,967 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:10:03,968 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs.i [2023-11-17 15:10:05,105 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:10:05,336 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:10:05,341 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs.i [2023-11-17 15:10:05,357 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5e2ebf27/aa83c0ec709647cdaa8436d8340f9e34/FLAGce031cf1a [2023-11-17 15:10:05,369 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5e2ebf27/aa83c0ec709647cdaa8436d8340f9e34 [2023-11-17 15:10:05,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:10:05,372 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:10:05,372 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:10:05,372 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:10:05,376 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:10:05,376 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:10:05" (1/1) ... [2023-11-17 15:10:05,377 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@513a6b14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:10:05, skipping insertion in model container [2023-11-17 15:10:05,377 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:10:05" (1/1) ... [2023-11-17 15:10:05,409 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:10:05,637 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-ext/35_double_lock_p3_vs.i[30553,30566] [2023-11-17 15:10:05,648 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:10:05,656 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:10:05,691 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-ext/35_double_lock_p3_vs.i[30553,30566] [2023-11-17 15:10:05,699 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:10:05,728 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:10:05,729 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:10:05 WrapperNode [2023-11-17 15:10:05,729 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:10:05,730 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:10:05,730 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:10:05,730 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:10:05,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:10:05" (1/1) ... [2023-11-17 15:10:05,758 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:10:05" (1/1) ... [2023-11-17 15:10:05,782 INFO L138 Inliner]: procedures = 172, calls = 27, calls flagged for inlining = 11, calls inlined = 15, statements flattened = 125 [2023-11-17 15:10:05,783 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:10:05,783 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:10:05,783 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:10:05,783 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:10:05,790 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:10:05" (1/1) ... [2023-11-17 15:10:05,790 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:10:05" (1/1) ... [2023-11-17 15:10:05,800 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:10:05" (1/1) ... [2023-11-17 15:10:05,801 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:10:05" (1/1) ... [2023-11-17 15:10:05,805 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:10:05" (1/1) ... [2023-11-17 15:10:05,807 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:10:05" (1/1) ... [2023-11-17 15:10:05,809 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:10:05" (1/1) ... [2023-11-17 15:10:05,810 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:10:05" (1/1) ... [2023-11-17 15:10:05,813 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:10:05,814 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:10:05,814 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:10:05,815 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:10:05,815 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:10:05" (1/1) ... [2023-11-17 15:10:05,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:10:05,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:10:05,856 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) [2023-11-17 15:10:05,891 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 [2023-11-17 15:10:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 15:10:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-11-17 15:10:05,896 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-11-17 15:10:05,897 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-17 15:10:05,897 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-17 15:10:05,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:10:05,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:10:05,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:10:05,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:10:05,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:10:05,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:10:05,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:10:05,914 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 15:10:06,005 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:10:06,008 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:10:06,224 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:10:06,393 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:10:06,394 INFO L307 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-17 15:10:06,395 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:10:06 BoogieIcfgContainer [2023-11-17 15:10:06,395 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:10:06,397 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:10:06,397 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:10:06,399 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:10:06,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:10:05" (1/3) ... [2023-11-17 15:10:06,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19fd77e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:10:06, skipping insertion in model container [2023-11-17 15:10:06,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:10:05" (2/3) ... [2023-11-17 15:10:06,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19fd77e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:10:06, skipping insertion in model container [2023-11-17 15:10:06,404 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:10:06" (3/3) ... [2023-11-17 15:10:06,405 INFO L112 eAbstractionObserver]: Analyzing ICFG 35_double_lock_p3_vs.i [2023-11-17 15:10:06,436 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:10:06,436 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 15:10:06,436 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:10:06,512 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 15:10:06,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 76 transitions, 160 flow [2023-11-17 15:10:06,574 INFO L124 PetriNetUnfolderBase]: 6/86 cut-off events. [2023-11-17 15:10:06,574 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:10:06,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 86 events. 6/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 128 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 70. Up to 4 conditions per place. [2023-11-17 15:10:06,579 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 76 transitions, 160 flow [2023-11-17 15:10:06,582 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 75 transitions, 157 flow [2023-11-17 15:10:06,585 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:10:06,612 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 75 transitions, 157 flow [2023-11-17 15:10:06,614 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 75 transitions, 157 flow [2023-11-17 15:10:06,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 75 transitions, 157 flow [2023-11-17 15:10:06,640 INFO L124 PetriNetUnfolderBase]: 6/86 cut-off events. [2023-11-17 15:10:06,640 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:10:06,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 86 events. 6/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 128 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 70. Up to 4 conditions per place. [2023-11-17 15:10:06,642 INFO L119 LiptonReduction]: Number of co-enabled transitions 1900 [2023-11-17 15:10:08,096 INFO L134 LiptonReduction]: Checked pairs total: 3338 [2023-11-17 15:10:08,097 INFO L136 LiptonReduction]: Total number of compositions: 60 [2023-11-17 15:10:08,109 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:10:08,114 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;@2a209622, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:10:08,114 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 15:10:08,117 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:10:08,118 INFO L124 PetriNetUnfolderBase]: 2/12 cut-off events. [2023-11-17 15:10:08,118 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:10:08,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:10:08,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-17 15:10:08,119 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:10:08,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:10:08,123 INFO L85 PathProgramCache]: Analyzing trace with hash 495330996, now seen corresponding path program 1 times [2023-11-17 15:10:08,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:10:08,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732704342] [2023-11-17 15:10:08,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:10:08,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:10:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:10:08,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:10:08,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:10:08,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732704342] [2023-11-17 15:10:08,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732704342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:10:08,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:10:08,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 15:10:08,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671444828] [2023-11-17 15:10:08,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:10:08,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:10:08,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:10:08,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:10:08,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:10:08,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 136 [2023-11-17 15:10:08,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 24 transitions, 55 flow. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:10:08,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:10:08,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 136 [2023-11-17 15:10:08,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:10:08,457 INFO L124 PetriNetUnfolderBase]: 232/398 cut-off events. [2023-11-17 15:10:08,458 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 15:10:08,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 797 conditions, 398 events. 232/398 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1409 event pairs, 66 based on Foata normal form. 0/365 useless extension candidates. Maximal degree in co-relation 787. Up to 278 conditions per place. [2023-11-17 15:10:08,461 INFO L140 encePairwiseOnDemand]: 130/136 looper letters, 22 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2023-11-17 15:10:08,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 26 transitions, 107 flow [2023-11-17 15:10:08,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:10:08,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:10:08,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 184 transitions. [2023-11-17 15:10:08,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45098039215686275 [2023-11-17 15:10:08,473 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 184 transitions. [2023-11-17 15:10:08,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 184 transitions. [2023-11-17 15:10:08,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:10:08,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 184 transitions. [2023-11-17 15:10:08,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:10:08,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:10:08,481 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:10:08,483 INFO L175 Difference]: Start difference. First operand has 27 places, 24 transitions, 55 flow. Second operand 3 states and 184 transitions. [2023-11-17 15:10:08,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 26 transitions, 107 flow [2023-11-17 15:10:08,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 26 transitions, 106 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:10:08,486 INFO L231 Difference]: Finished difference. Result has 27 places, 21 transitions, 56 flow [2023-11-17 15:10:08,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=27, PETRI_TRANSITIONS=21} [2023-11-17 15:10:08,490 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2023-11-17 15:10:08,491 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 21 transitions, 56 flow [2023-11-17 15:10:08,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:10:08,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:10:08,491 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-17 15:10:08,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:10:08,491 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:10:08,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:10:08,492 INFO L85 PathProgramCache]: Analyzing trace with hash -408285021, now seen corresponding path program 1 times [2023-11-17 15:10:08,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:10:08,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715139831] [2023-11-17 15:10:08,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:10:08,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:10:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 15:10:08,508 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-17 15:10:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 15:10:08,530 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-17 15:10:08,531 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-17 15:10:08,532 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-11-17 15:10:08,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-11-17 15:10:08,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 15:10:08,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-11-17 15:10:08,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:10:08,534 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-17 15:10:08,536 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-17 15:10:08,536 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-17 15:10:08,558 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 15:10:08,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 118 transitions, 256 flow [2023-11-17 15:10:08,572 INFO L124 PetriNetUnfolderBase]: 8/127 cut-off events. [2023-11-17 15:10:08,573 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 15:10:08,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 127 events. 8/127 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 247 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 134. Up to 6 conditions per place. [2023-11-17 15:10:08,574 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 118 transitions, 256 flow [2023-11-17 15:10:08,575 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 103 transitions, 219 flow [2023-11-17 15:10:08,575 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:10:08,575 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 103 transitions, 219 flow [2023-11-17 15:10:08,575 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 103 transitions, 219 flow [2023-11-17 15:10:08,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 103 transitions, 219 flow [2023-11-17 15:10:08,586 INFO L124 PetriNetUnfolderBase]: 8/127 cut-off events. [2023-11-17 15:10:08,586 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 15:10:08,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 127 events. 8/127 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 248 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 114. Up to 6 conditions per place. [2023-11-17 15:10:08,591 INFO L119 LiptonReduction]: Number of co-enabled transitions 4896 [2023-11-17 15:10:10,044 INFO L134 LiptonReduction]: Checked pairs total: 13316 [2023-11-17 15:10:10,044 INFO L136 LiptonReduction]: Total number of compositions: 73 [2023-11-17 15:10:10,046 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:10:10,046 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;@2a209622, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:10:10,047 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-17 15:10:10,048 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:10:10,048 INFO L124 PetriNetUnfolderBase]: 2/12 cut-off events. [2023-11-17 15:10:10,048 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:10:10,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:10:10,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-17 15:10:10,049 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 15:10:10,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:10:10,049 INFO L85 PathProgramCache]: Analyzing trace with hash 717240187, now seen corresponding path program 1 times [2023-11-17 15:10:10,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:10:10,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192275654] [2023-11-17 15:10:10,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:10:10,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:10:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:10:10,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:10:10,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:10:10,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192275654] [2023-11-17 15:10:10,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192275654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:10:10,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:10:10,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 15:10:10,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232350239] [2023-11-17 15:10:10,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:10:10,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:10:10,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:10:10,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:10:10,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:10:10,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 191 [2023-11-17 15:10:10,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:10:10,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:10:10,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 191 [2023-11-17 15:10:10,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:10:10,560 INFO L124 PetriNetUnfolderBase]: 4526/6451 cut-off events. [2023-11-17 15:10:10,561 INFO L125 PetriNetUnfolderBase]: For 212/212 co-relation queries the response was YES. [2023-11-17 15:10:10,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13062 conditions, 6451 events. 4526/6451 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 34298 event pairs, 1323 based on Foata normal form. 0/5796 useless extension candidates. Maximal degree in co-relation 13051. Up to 5903 conditions per place. [2023-11-17 15:10:10,593 INFO L140 encePairwiseOnDemand]: 184/191 looper letters, 46 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2023-11-17 15:10:10,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 53 transitions, 222 flow [2023-11-17 15:10:10,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:10:10,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:10:10,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 269 transitions. [2023-11-17 15:10:10,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4694589877835951 [2023-11-17 15:10:10,596 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 269 transitions. [2023-11-17 15:10:10,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 269 transitions. [2023-11-17 15:10:10,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:10:10,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 269 transitions. [2023-11-17 15:10:10,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:10:10,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:10:10,599 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:10:10,599 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 99 flow. Second operand 3 states and 269 transitions. [2023-11-17 15:10:10,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 53 transitions, 222 flow [2023-11-17 15:10:10,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 53 transitions, 221 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:10:10,601 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 111 flow [2023-11-17 15:10:10,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2023-11-17 15:10:10,602 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 0 predicate places. [2023-11-17 15:10:10,602 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 111 flow [2023-11-17 15:10:10,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:10:10,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:10:10,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:10:10,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 15:10:10,602 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 15:10:10,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:10:10,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1153553739, now seen corresponding path program 1 times [2023-11-17 15:10:10,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:10:10,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859180153] [2023-11-17 15:10:10,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:10:10,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:10:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:10:10,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:10:10,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:10:10,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859180153] [2023-11-17 15:10:10,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859180153] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:10:10,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:10:10,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:10:10,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795325680] [2023-11-17 15:10:10,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:10:10,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:10:10,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:10:10,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:10:10,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:10:10,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 191 [2023-11-17 15:10:10,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 111 flow. Second operand has 5 states, 5 states have (on average 70.0) internal successors, (350), 5 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:10:10,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:10:10,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 191 [2023-11-17 15:10:10,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:10:11,354 INFO L124 PetriNetUnfolderBase]: 5404/7701 cut-off events. [2023-11-17 15:10:11,355 INFO L125 PetriNetUnfolderBase]: For 818/818 co-relation queries the response was YES. [2023-11-17 15:10:11,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16374 conditions, 7701 events. 5404/7701 cut-off events. For 818/818 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 43351 event pairs, 1265 based on Foata normal form. 56/7456 useless extension candidates. Maximal degree in co-relation 16361. Up to 5835 conditions per place. [2023-11-17 15:10:11,400 INFO L140 encePairwiseOnDemand]: 181/191 looper letters, 95 selfloop transitions, 17 changer transitions 0/116 dead transitions. [2023-11-17 15:10:11,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 116 transitions, 514 flow [2023-11-17 15:10:11,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:10:11,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:10:11,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 590 transitions. [2023-11-17 15:10:11,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4412864622288706 [2023-11-17 15:10:11,403 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 590 transitions. [2023-11-17 15:10:11,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 590 transitions. [2023-11-17 15:10:11,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:10:11,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 590 transitions. [2023-11-17 15:10:11,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.28571428571429) internal successors, (590), 7 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:10:11,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 191.0) internal successors, (1528), 8 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:10:11,408 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 191.0) internal successors, (1528), 8 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:10:11,408 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 111 flow. Second operand 7 states and 590 transitions. [2023-11-17 15:10:11,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 116 transitions, 514 flow [2023-11-17 15:10:11,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 116 transitions, 510 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:10:11,411 INFO L231 Difference]: Finished difference. Result has 56 places, 56 transitions, 227 flow [2023-11-17 15:10:11,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=227, PETRI_PLACES=56, PETRI_TRANSITIONS=56} [2023-11-17 15:10:11,412 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 9 predicate places. [2023-11-17 15:10:11,412 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 56 transitions, 227 flow [2023-11-17 15:10:11,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.0) internal successors, (350), 5 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:10:11,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:10:11,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:10:11,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 15:10:11,413 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 15:10:11,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:10:11,413 INFO L85 PathProgramCache]: Analyzing trace with hash 463571084, now seen corresponding path program 1 times [2023-11-17 15:10:11,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:10:11,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633988966] [2023-11-17 15:10:11,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:10:11,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:10:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:10:11,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:10:11,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:10:11,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633988966] [2023-11-17 15:10:11,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633988966] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:10:11,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:10:11,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:10:11,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297784304] [2023-11-17 15:10:11,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:10:11,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:10:11,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:10:11,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:10:11,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 15:10:11,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 191 [2023-11-17 15:10:11,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 56 transitions, 227 flow. Second operand has 6 states, 6 states have (on average 69.0) internal successors, (414), 6 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:10:11,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:10:11,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 191 [2023-11-17 15:10:11,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:10:12,335 INFO L124 PetriNetUnfolderBase]: 6440/9217 cut-off events. [2023-11-17 15:10:12,336 INFO L125 PetriNetUnfolderBase]: For 4542/4542 co-relation queries the response was YES. [2023-11-17 15:10:12,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23027 conditions, 9217 events. 6440/9217 cut-off events. For 4542/4542 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 53916 event pairs, 1595 based on Foata normal form. 112/9024 useless extension candidates. Maximal degree in co-relation 23009. Up to 5369 conditions per place. [2023-11-17 15:10:12,388 INFO L140 encePairwiseOnDemand]: 180/191 looper letters, 118 selfloop transitions, 23 changer transitions 0/145 dead transitions. [2023-11-17 15:10:12,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 145 transitions, 761 flow [2023-11-17 15:10:12,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 15:10:12,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 15:10:12,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 677 transitions. [2023-11-17 15:10:12,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4430628272251309 [2023-11-17 15:10:12,391 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 677 transitions. [2023-11-17 15:10:12,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 677 transitions. [2023-11-17 15:10:12,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:10:12,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 677 transitions. [2023-11-17 15:10:12,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 84.625) internal successors, (677), 8 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:10:12,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 191.0) internal successors, (1719), 9 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:10:12,395 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 191.0) internal successors, (1719), 9 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:10:12,395 INFO L175 Difference]: Start difference. First operand has 56 places, 56 transitions, 227 flow. Second operand 8 states and 677 transitions. [2023-11-17 15:10:12,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 145 transitions, 761 flow [2023-11-17 15:10:12,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 145 transitions, 753 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-17 15:10:12,404 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 324 flow [2023-11-17 15:10:12,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=324, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2023-11-17 15:10:12,405 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 17 predicate places. [2023-11-17 15:10:12,405 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 324 flow [2023-11-17 15:10:12,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.0) internal successors, (414), 6 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:10:12,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:10:12,405 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-17 15:10:12,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 15:10:12,406 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 15:10:12,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:10:12,406 INFO L85 PathProgramCache]: Analyzing trace with hash -2048410484, now seen corresponding path program 1 times [2023-11-17 15:10:12,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:10:12,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120281030] [2023-11-17 15:10:12,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:10:12,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:10:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 15:10:12,415 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-17 15:10:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 15:10:12,424 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-17 15:10:12,425 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-17 15:10:12,425 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-17 15:10:12,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-17 15:10:12,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-17 15:10:12,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-11-17 15:10:12,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-11-17 15:10:12,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 15:10:12,426 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-17 15:10:12,426 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-17 15:10:12,426 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-17 15:10:12,452 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 15:10:12,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 160 transitions, 356 flow [2023-11-17 15:10:12,466 INFO L124 PetriNetUnfolderBase]: 10/168 cut-off events. [2023-11-17 15:10:12,467 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-17 15:10:12,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 168 events. 10/168 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 410 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 179. Up to 8 conditions per place. [2023-11-17 15:10:12,468 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 160 transitions, 356 flow [2023-11-17 15:10:12,469 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 131 transitions, 283 flow [2023-11-17 15:10:12,469 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:10:12,469 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 131 transitions, 283 flow [2023-11-17 15:10:12,469 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 131 transitions, 283 flow [2023-11-17 15:10:12,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 131 transitions, 283 flow [2023-11-17 15:10:12,480 INFO L124 PetriNetUnfolderBase]: 10/168 cut-off events. [2023-11-17 15:10:12,480 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-17 15:10:12,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 168 events. 10/168 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 410 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 159. Up to 8 conditions per place. [2023-11-17 15:10:12,485 INFO L119 LiptonReduction]: Number of co-enabled transitions 9404 [2023-11-17 15:10:14,249 INFO L134 LiptonReduction]: Checked pairs total: 27134 [2023-11-17 15:10:14,249 INFO L136 LiptonReduction]: Total number of compositions: 88 [2023-11-17 15:10:14,251 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:10:14,251 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;@2a209622, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:10:14,251 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-17 15:10:14,254 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:10:14,255 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-17 15:10:14,255 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:10:14,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:10:14,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-17 15:10:14,255 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 15:10:14,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:10:14,255 INFO L85 PathProgramCache]: Analyzing trace with hash 993495239, now seen corresponding path program 1 times [2023-11-17 15:10:14,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:10:14,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064977473] [2023-11-17 15:10:14,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:10:14,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:10:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:10:14,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:10:14,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:10:14,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064977473] [2023-11-17 15:10:14,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064977473] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:10:14,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:10:14,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 15:10:14,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55990587] [2023-11-17 15:10:14,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:10:14,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:10:14,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:10:14,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:10:14,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:10:14,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 248 [2023-11-17 15:10:14,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:10:14,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:10:14,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 248 [2023-11-17 15:10:14,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:10:20,631 INFO L124 PetriNetUnfolderBase]: 82862/107177 cut-off events. [2023-11-17 15:10:20,631 INFO L125 PetriNetUnfolderBase]: For 5522/5522 co-relation queries the response was YES. [2023-11-17 15:10:20,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217793 conditions, 107177 events. 82862/107177 cut-off events. For 5522/5522 co-relation queries the response was YES. Maximal size of possible extension queue 2968. Compared 632473 event pairs, 29321 based on Foata normal form. 0/96865 useless extension candidates. Maximal degree in co-relation 217781. Up to 104467 conditions per place. [2023-11-17 15:10:21,275 INFO L140 encePairwiseOnDemand]: 241/248 looper letters, 64 selfloop transitions, 4 changer transitions 0/72 dead transitions. [2023-11-17 15:10:21,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 72 transitions, 313 flow [2023-11-17 15:10:21,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:10:21,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:10:21,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2023-11-17 15:10:21,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4650537634408602 [2023-11-17 15:10:21,276 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 346 transitions. [2023-11-17 15:10:21,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 346 transitions. [2023-11-17 15:10:21,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:10:21,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 346 transitions. [2023-11-17 15:10:21,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:10:21,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:10:21,280 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:10:21,280 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 133 flow. Second operand 3 states and 346 transitions. [2023-11-17 15:10:21,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 72 transitions, 313 flow [2023-11-17 15:10:21,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 72 transitions, 308 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-17 15:10:21,284 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 152 flow [2023-11-17 15:10:21,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2023-11-17 15:10:21,285 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 0 predicate places. [2023-11-17 15:10:21,286 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 152 flow [2023-11-17 15:10:21,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:10:21,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:10:21,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:10:21,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 15:10:21,289 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 15:10:21,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:10:21,290 INFO L85 PathProgramCache]: Analyzing trace with hash -289670203, now seen corresponding path program 1 times [2023-11-17 15:10:21,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:10:21,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224845003] [2023-11-17 15:10:21,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:10:21,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:10:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:10:21,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:10:21,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:10:21,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224845003] [2023-11-17 15:10:21,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224845003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:10:21,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:10:21,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:10:21,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376260412] [2023-11-17 15:10:21,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:10:21,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:10:21,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:10:21,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:10:21,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:10:21,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 248 [2023-11-17 15:10:21,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 152 flow. Second operand has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 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) [2023-11-17 15:10:21,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:10:21,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 248 [2023-11-17 15:10:21,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:10:29,804 INFO L124 PetriNetUnfolderBase]: 105304/136311 cut-off events. [2023-11-17 15:10:29,804 INFO L125 PetriNetUnfolderBase]: For 15306/15306 co-relation queries the response was YES. [2023-11-17 15:10:30,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289523 conditions, 136311 events. 105304/136311 cut-off events. For 15306/15306 co-relation queries the response was YES. Maximal size of possible extension queue 4049. Compared 838544 event pairs, 30707 based on Foata normal form. 732/130686 useless extension candidates. Maximal degree in co-relation 289509. Up to 107547 conditions per place. [2023-11-17 15:10:30,561 INFO L140 encePairwiseOnDemand]: 234/248 looper letters, 155 selfloop transitions, 27 changer transitions 0/186 dead transitions. [2023-11-17 15:10:30,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 186 transitions, 841 flow [2023-11-17 15:10:30,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:10:30,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:10:30,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 800 transitions. [2023-11-17 15:10:30,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4608294930875576 [2023-11-17 15:10:30,565 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 800 transitions. [2023-11-17 15:10:30,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 800 transitions. [2023-11-17 15:10:30,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:10:30,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 800 transitions. [2023-11-17 15:10:30,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.28571428571429) internal successors, (800), 7 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:10:30,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 248.0) internal successors, (1984), 8 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:10:30,571 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 248.0) internal successors, (1984), 8 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:10:30,571 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 152 flow. Second operand 7 states and 800 transitions. [2023-11-17 15:10:30,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 186 transitions, 841 flow [2023-11-17 15:10:30,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 186 transitions, 835 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:10:30,591 INFO L231 Difference]: Finished difference. Result has 71 places, 80 transitions, 343 flow [2023-11-17 15:10:30,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=343, PETRI_PLACES=71, PETRI_TRANSITIONS=80} [2023-11-17 15:10:30,592 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 9 predicate places. [2023-11-17 15:10:30,592 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 80 transitions, 343 flow [2023-11-17 15:10:30,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 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) [2023-11-17 15:10:30,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:10:30,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:10:30,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 15:10:30,593 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 15:10:30,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:10:30,593 INFO L85 PathProgramCache]: Analyzing trace with hash 799841103, now seen corresponding path program 1 times [2023-11-17 15:10:30,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:10:30,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797994768] [2023-11-17 15:10:30,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:10:30,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:10:30,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:10:30,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:10:30,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:10:30,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797994768] [2023-11-17 15:10:30,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797994768] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:10:30,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:10:30,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 15:10:30,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647397274] [2023-11-17 15:10:30,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:10:30,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 15:10:30,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:10:30,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 15:10:30,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 15:10:30,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 248 [2023-11-17 15:10:30,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 80 transitions, 343 flow. Second operand has 7 states, 7 states have (on average 88.71428571428571) internal successors, (621), 7 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:10:30,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:10:30,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 248 [2023-11-17 15:10:30,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:10:43,022 INFO L124 PetriNetUnfolderBase]: 138528/179631 cut-off events. [2023-11-17 15:10:43,023 INFO L125 PetriNetUnfolderBase]: For 100698/100698 co-relation queries the response was YES. [2023-11-17 15:10:43,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461268 conditions, 179631 events. 138528/179631 cut-off events. For 100698/100698 co-relation queries the response was YES. Maximal size of possible extension queue 5553. Compared 1161987 event pairs, 27403 based on Foata normal form. 1464/173594 useless extension candidates. Maximal degree in co-relation 461249. Up to 108879 conditions per place. [2023-11-17 15:10:44,192 INFO L140 encePairwiseOnDemand]: 232/248 looper letters, 237 selfloop transitions, 47 changer transitions 0/288 dead transitions. [2023-11-17 15:10:44,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 288 transitions, 1555 flow [2023-11-17 15:10:44,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 15:10:44,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 15:10:44,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1156 transitions. [2023-11-17 15:10:44,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4661290322580645 [2023-11-17 15:10:44,196 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1156 transitions. [2023-11-17 15:10:44,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1156 transitions. [2023-11-17 15:10:44,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:10:44,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1156 transitions. [2023-11-17 15:10:44,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 115.6) internal successors, (1156), 10 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:10:44,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 248.0) internal successors, (2728), 11 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:10:44,201 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 248.0) internal successors, (2728), 11 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:10:44,201 INFO L175 Difference]: Start difference. First operand has 71 places, 80 transitions, 343 flow. Second operand 10 states and 1156 transitions. [2023-11-17 15:10:44,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 288 transitions, 1555 flow [2023-11-17 15:10:44,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 288 transitions, 1541 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-17 15:10:44,423 INFO L231 Difference]: Finished difference. Result has 82 places, 100 transitions, 618 flow [2023-11-17 15:10:44,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=618, PETRI_PLACES=82, PETRI_TRANSITIONS=100} [2023-11-17 15:10:44,424 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 20 predicate places. [2023-11-17 15:10:44,424 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 100 transitions, 618 flow [2023-11-17 15:10:44,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.71428571428571) internal successors, (621), 7 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:10:44,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:10:44,425 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:10:44,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 15:10:44,425 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 15:10:44,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:10:44,425 INFO L85 PathProgramCache]: Analyzing trace with hash 2051245519, now seen corresponding path program 1 times [2023-11-17 15:10:44,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:10:44,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292318251] [2023-11-17 15:10:44,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:10:44,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:10:44,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:10:44,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 15:10:44,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:10:44,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292318251] [2023-11-17 15:10:44,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292318251] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:10:44,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:10:44,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:10:44,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528744460] [2023-11-17 15:10:44,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:10:44,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:10:44,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:10:44,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:10:44,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:10:44,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 248 [2023-11-17 15:10:44,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 100 transitions, 618 flow. Second operand has 5 states, 5 states have (on average 90.2) internal successors, (451), 5 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:10:44,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:10:44,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 248 [2023-11-17 15:10:44,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:10:59,840 INFO L124 PetriNetUnfolderBase]: 160652/208487 cut-off events. [2023-11-17 15:10:59,840 INFO L125 PetriNetUnfolderBase]: For 324044/324044 co-relation queries the response was YES. [2023-11-17 15:11:00,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 641216 conditions, 208487 events. 160652/208487 cut-off events. For 324044/324044 co-relation queries the response was YES. Maximal size of possible extension queue 6696. Compared 1369445 event pairs, 41953 based on Foata normal form. 920/201355 useless extension candidates. Maximal degree in co-relation 641193. Up to 180157 conditions per place. [2023-11-17 15:11:01,957 INFO L140 encePairwiseOnDemand]: 235/248 looper letters, 196 selfloop transitions, 26 changer transitions 0/226 dead transitions. [2023-11-17 15:11:01,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 226 transitions, 1696 flow [2023-11-17 15:11:01,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:11:01,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:11:01,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 676 transitions. [2023-11-17 15:11:01,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4543010752688172 [2023-11-17 15:11:01,961 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 676 transitions. [2023-11-17 15:11:01,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 676 transitions. [2023-11-17 15:11:01,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:11:01,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 676 transitions. [2023-11-17 15:11:01,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 112.66666666666667) internal successors, (676), 6 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:11:01,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 248.0) internal successors, (1736), 7 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:11:01,979 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 248.0) internal successors, (1736), 7 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:11:01,979 INFO L175 Difference]: Start difference. First operand has 82 places, 100 transitions, 618 flow. Second operand 6 states and 676 transitions. [2023-11-17 15:11:01,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 226 transitions, 1696 flow [2023-11-17 15:11:03,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 226 transitions, 1504 flow, removed 60 selfloop flow, removed 5 redundant places. [2023-11-17 15:11:03,223 INFO L231 Difference]: Finished difference. Result has 85 places, 120 transitions, 767 flow [2023-11-17 15:11:03,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=767, PETRI_PLACES=85, PETRI_TRANSITIONS=120} [2023-11-17 15:11:03,224 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 23 predicate places. [2023-11-17 15:11:03,224 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 120 transitions, 767 flow [2023-11-17 15:11:03,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.2) internal successors, (451), 5 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:11:03,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:11:03,224 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:11:03,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 15:11:03,225 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 15:11:03,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:11:03,225 INFO L85 PathProgramCache]: Analyzing trace with hash -143119954, now seen corresponding path program 1 times [2023-11-17 15:11:03,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:11:03,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294876889] [2023-11-17 15:11:03,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:11:03,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:11:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:11:03,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 15:11:03,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:11:03,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294876889] [2023-11-17 15:11:03,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294876889] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:11:03,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:11:03,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 15:11:03,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82331811] [2023-11-17 15:11:03,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:11:03,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 15:11:03,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:11:03,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 15:11:03,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 15:11:03,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 248 [2023-11-17 15:11:03,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 120 transitions, 767 flow. Second operand has 7 states, 7 states have (on average 88.85714285714286) internal successors, (622), 7 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:11:03,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:11:03,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 248 [2023-11-17 15:11:03,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand