/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/weaver/popl20-mult-equiv.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 16:26:05,458 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 16:26:05,505 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 16:26:05,520 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 16:26:05,520 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 16:26:05,521 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 16:26:05,521 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 16:26:05,521 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 16:26:05,522 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 16:26:05,522 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 16:26:05,522 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 16:26:05,522 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 16:26:05,523 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 16:26:05,523 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 16:26:05,523 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 16:26:05,523 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 16:26:05,523 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 16:26:05,524 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 16:26:05,524 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 16:26:05,524 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 16:26:05,524 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 16:26:05,525 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 16:26:05,525 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 16:26:05,525 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 16:26:05,531 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 16:26:05,531 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:26:05,531 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 16:26:05,531 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 16:26:05,532 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 16:26:05,532 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 16:26:05,532 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 16:26:05,532 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 16:26:05,533 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 16:26:05,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 16:26:05,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 16:26:05,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 16:26:05,714 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 16:26:05,715 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 16:26:05,716 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c [2023-11-17 16:26:06,765 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 16:26:06,892 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 16:26:06,893 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c [2023-11-17 16:26:06,898 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0c561ea7/cfabb3acb0944dc598b8056105d4d5d3/FLAG1c9f26870 [2023-11-17 16:26:06,908 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0c561ea7/cfabb3acb0944dc598b8056105d4d5d3 [2023-11-17 16:26:06,910 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 16:26:06,912 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 16:26:06,913 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 16:26:06,913 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 16:26:06,916 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 16:26:06,916 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:26:06" (1/1) ... [2023-11-17 16:26:06,917 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6134f1d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:26:06, skipping insertion in model container [2023-11-17 16:26:06,917 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:26:06" (1/1) ... [2023-11-17 16:26:06,934 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 16:26:07,048 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c[2630,2643] [2023-11-17 16:26:07,051 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:26:07,057 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 16:26:07,070 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c[2630,2643] [2023-11-17 16:26:07,071 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:26:07,075 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:26:07,076 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:26:07,080 INFO L206 MainTranslator]: Completed translation [2023-11-17 16:26:07,080 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:26:07 WrapperNode [2023-11-17 16:26:07,081 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 16:26:07,081 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 16:26:07,081 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 16:26:07,081 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 16:26:07,086 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:26:07" (1/1) ... [2023-11-17 16:26:07,090 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:26:07" (1/1) ... [2023-11-17 16:26:07,101 INFO L138 Inliner]: procedures = 22, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2023-11-17 16:26:07,102 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 16:26:07,102 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 16:26:07,102 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 16:26:07,102 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 16:26:07,110 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:26:07" (1/1) ... [2023-11-17 16:26:07,110 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:26:07" (1/1) ... [2023-11-17 16:26:07,112 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:26:07" (1/1) ... [2023-11-17 16:26:07,112 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:26:07" (1/1) ... [2023-11-17 16:26:07,116 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:26:07" (1/1) ... [2023-11-17 16:26:07,118 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:26:07" (1/1) ... [2023-11-17 16:26:07,119 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:26:07" (1/1) ... [2023-11-17 16:26:07,120 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:26:07" (1/1) ... [2023-11-17 16:26:07,121 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 16:26:07,122 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 16:26:07,122 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 16:26:07,122 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 16:26:07,122 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:26:07" (1/1) ... [2023-11-17 16:26:07,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:26:07,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:26:07,143 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 16:26:07,147 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 16:26:07,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 16:26:07,167 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 16:26:07,167 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 16:26:07,167 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 16:26:07,167 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 16:26:07,167 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 16:26:07,167 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 16:26:07,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 16:26:07,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 16:26:07,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 16:26:07,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 16:26:07,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 16:26:07,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 16:26:07,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 16:26:07,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 16:26:07,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 16:26:07,169 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 16:26:07,235 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 16:26:07,236 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 16:26:07,370 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 16:26:07,419 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 16:26:07,420 INFO L307 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-17 16:26:07,421 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:26:07 BoogieIcfgContainer [2023-11-17 16:26:07,421 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 16:26:07,422 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 16:26:07,422 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 16:26:07,424 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 16:26:07,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 04:26:06" (1/3) ... [2023-11-17 16:26:07,425 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9fc6030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:26:07, skipping insertion in model container [2023-11-17 16:26:07,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:26:07" (2/3) ... [2023-11-17 16:26:07,425 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9fc6030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:26:07, skipping insertion in model container [2023-11-17 16:26:07,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:26:07" (3/3) ... [2023-11-17 16:26:07,426 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-mult-equiv.wvr.c [2023-11-17 16:26:07,437 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 16:26:07,437 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 16:26:07,437 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 16:26:07,482 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-17 16:26:07,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 98 transitions, 217 flow [2023-11-17 16:26:07,542 INFO L124 PetriNetUnfolderBase]: 7/95 cut-off events. [2023-11-17 16:26:07,542 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 16:26:07,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 95 events. 7/95 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-11-17 16:26:07,546 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 98 transitions, 217 flow [2023-11-17 16:26:07,548 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 84 transitions, 186 flow [2023-11-17 16:26:07,551 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 16:26:07,558 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 84 transitions, 186 flow [2023-11-17 16:26:07,560 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 84 transitions, 186 flow [2023-11-17 16:26:07,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 84 transitions, 186 flow [2023-11-17 16:26:07,606 INFO L124 PetriNetUnfolderBase]: 7/84 cut-off events. [2023-11-17 16:26:07,606 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 16:26:07,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 84 events. 7/84 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-11-17 16:26:07,607 INFO L119 LiptonReduction]: Number of co-enabled transitions 1026 [2023-11-17 16:26:09,407 INFO L134 LiptonReduction]: Checked pairs total: 1424 [2023-11-17 16:26:09,407 INFO L136 LiptonReduction]: Total number of compositions: 66 [2023-11-17 16:26:09,418 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 16:26:09,422 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;@494d274b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 16:26:09,423 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 16:26:09,427 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 16:26:09,427 INFO L124 PetriNetUnfolderBase]: 3/23 cut-off events. [2023-11-17 16:26:09,427 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 16:26:09,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:26:09,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:26:09,428 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:26:09,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:26:09,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1976262320, now seen corresponding path program 1 times [2023-11-17 16:26:09,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:26:09,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49254826] [2023-11-17 16:26:09,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:26:09,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:26:09,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:26:09,809 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 16:26:09,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:26:09,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49254826] [2023-11-17 16:26:09,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49254826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:26:09,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:26:09,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 16:26:09,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688016980] [2023-11-17 16:26:09,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:26:09,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 16:26:09,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:26:09,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 16:26:09,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 16:26:09,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 164 [2023-11-17 16:26:09,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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 16:26:09,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:26:09,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 164 [2023-11-17 16:26:09,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:26:09,974 INFO L124 PetriNetUnfolderBase]: 509/755 cut-off events. [2023-11-17 16:26:09,974 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2023-11-17 16:26:09,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1535 conditions, 755 events. 509/755 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2772 event pairs, 95 based on Foata normal form. 1/522 useless extension candidates. Maximal degree in co-relation 1230. Up to 531 conditions per place. [2023-11-17 16:26:09,983 INFO L140 encePairwiseOnDemand]: 159/164 looper letters, 34 selfloop transitions, 4 changer transitions 1/42 dead transitions. [2023-11-17 16:26:09,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 42 transitions, 195 flow [2023-11-17 16:26:09,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 16:26:09,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 16:26:09,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2023-11-17 16:26:10,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5752032520325203 [2023-11-17 16:26:10,003 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2023-11-17 16:26:10,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2023-11-17 16:26:10,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:26:10,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2023-11-17 16:26:10,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 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 16:26:10,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 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 16:26:10,016 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 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 16:26:10,017 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 66 flow. Second operand 3 states and 283 transitions. [2023-11-17 16:26:10,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 42 transitions, 195 flow [2023-11-17 16:26:10,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 42 transitions, 173 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-17 16:26:10,023 INFO L231 Difference]: Finished difference. Result has 28 places, 27 transitions, 80 flow [2023-11-17 16:26:10,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=28, PETRI_TRANSITIONS=27} [2023-11-17 16:26:10,027 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -3 predicate places. [2023-11-17 16:26:10,027 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 27 transitions, 80 flow [2023-11-17 16:26:10,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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 16:26:10,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:26:10,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:26:10,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 16:26:10,029 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:26:10,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:26:10,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1504693125, now seen corresponding path program 1 times [2023-11-17 16:26:10,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:26:10,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835018423] [2023-11-17 16:26:10,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:26:10,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:26:10,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:26:10,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:26:10,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:26:10,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835018423] [2023-11-17 16:26:10,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835018423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:26:10,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:26:10,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:26:10,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378064801] [2023-11-17 16:26:10,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:26:10,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:26:10,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:26:10,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:26:10,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-17 16:26:10,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 164 [2023-11-17 16:26:10,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 27 transitions, 80 flow. Second operand has 6 states, 6 states have (on average 75.16666666666667) internal successors, (451), 6 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 16:26:10,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:26:10,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 164 [2023-11-17 16:26:10,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:26:10,591 INFO L124 PetriNetUnfolderBase]: 675/995 cut-off events. [2023-11-17 16:26:10,591 INFO L125 PetriNetUnfolderBase]: For 201/206 co-relation queries the response was YES. [2023-11-17 16:26:10,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2335 conditions, 995 events. 675/995 cut-off events. For 201/206 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3907 event pairs, 73 based on Foata normal form. 49/1038 useless extension candidates. Maximal degree in co-relation 483. Up to 401 conditions per place. [2023-11-17 16:26:10,598 INFO L140 encePairwiseOnDemand]: 157/164 looper letters, 75 selfloop transitions, 20 changer transitions 0/96 dead transitions. [2023-11-17 16:26:10,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 96 transitions, 461 flow [2023-11-17 16:26:10,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 16:26:10,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 16:26:10,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 663 transitions. [2023-11-17 16:26:10,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053353658536586 [2023-11-17 16:26:10,601 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 663 transitions. [2023-11-17 16:26:10,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 663 transitions. [2023-11-17 16:26:10,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:26:10,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 663 transitions. [2023-11-17 16:26:10,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 82.875) internal successors, (663), 8 states have internal predecessors, (663), 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 16:26:10,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 164.0) internal successors, (1476), 9 states have internal predecessors, (1476), 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 16:26:10,606 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 164.0) internal successors, (1476), 9 states have internal predecessors, (1476), 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 16:26:10,606 INFO L175 Difference]: Start difference. First operand has 28 places, 27 transitions, 80 flow. Second operand 8 states and 663 transitions. [2023-11-17 16:26:10,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 96 transitions, 461 flow [2023-11-17 16:26:10,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 96 transitions, 451 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 16:26:10,609 INFO L231 Difference]: Finished difference. Result has 39 places, 47 transitions, 233 flow [2023-11-17 16:26:10,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=233, PETRI_PLACES=39, PETRI_TRANSITIONS=47} [2023-11-17 16:26:10,610 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 8 predicate places. [2023-11-17 16:26:10,610 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 47 transitions, 233 flow [2023-11-17 16:26:10,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.16666666666667) internal successors, (451), 6 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 16:26:10,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:26:10,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:26:10,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 16:26:10,613 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:26:10,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:26:10,620 INFO L85 PathProgramCache]: Analyzing trace with hash 5200741, now seen corresponding path program 2 times [2023-11-17 16:26:10,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:26:10,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920246601] [2023-11-17 16:26:10,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:26:10,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:26:10,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:26:10,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:26:10,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:26:10,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920246601] [2023-11-17 16:26:10,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920246601] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:26:10,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:26:10,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:26:10,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819204164] [2023-11-17 16:26:10,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:26:10,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:26:10,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:26:10,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:26:10,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:26:10,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 164 [2023-11-17 16:26:10,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 47 transitions, 233 flow. Second operand has 5 states, 5 states have (on average 75.8) internal successors, (379), 5 states have internal predecessors, (379), 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 16:26:10,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:26:10,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 164 [2023-11-17 16:26:10,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:26:10,913 INFO L124 PetriNetUnfolderBase]: 797/1183 cut-off events. [2023-11-17 16:26:10,914 INFO L125 PetriNetUnfolderBase]: For 1100/1134 co-relation queries the response was YES. [2023-11-17 16:26:10,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3608 conditions, 1183 events. 797/1183 cut-off events. For 1100/1134 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4739 event pairs, 151 based on Foata normal form. 36/1202 useless extension candidates. Maximal degree in co-relation 3359. Up to 741 conditions per place. [2023-11-17 16:26:10,920 INFO L140 encePairwiseOnDemand]: 157/164 looper letters, 70 selfloop transitions, 23 changer transitions 3/97 dead transitions. [2023-11-17 16:26:10,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 97 transitions, 619 flow [2023-11-17 16:26:10,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:26:10,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:26:10,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 506 transitions. [2023-11-17 16:26:10,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142276422764228 [2023-11-17 16:26:10,922 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 506 transitions. [2023-11-17 16:26:10,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 506 transitions. [2023-11-17 16:26:10,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:26:10,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 506 transitions. [2023-11-17 16:26:10,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 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 16:26:10,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 164.0) internal successors, (1148), 7 states have internal predecessors, (1148), 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 16:26:10,925 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 164.0) internal successors, (1148), 7 states have internal predecessors, (1148), 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 16:26:10,925 INFO L175 Difference]: Start difference. First operand has 39 places, 47 transitions, 233 flow. Second operand 6 states and 506 transitions. [2023-11-17 16:26:10,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 97 transitions, 619 flow [2023-11-17 16:26:10,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 97 transitions, 619 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 16:26:10,929 INFO L231 Difference]: Finished difference. Result has 47 places, 55 transitions, 362 flow [2023-11-17 16:26:10,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=362, PETRI_PLACES=47, PETRI_TRANSITIONS=55} [2023-11-17 16:26:10,929 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 16 predicate places. [2023-11-17 16:26:10,930 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 55 transitions, 362 flow [2023-11-17 16:26:10,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.8) internal successors, (379), 5 states have internal predecessors, (379), 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 16:26:10,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:26:10,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:26:10,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 16:26:10,930 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:26:10,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:26:10,931 INFO L85 PathProgramCache]: Analyzing trace with hash 530556991, now seen corresponding path program 3 times [2023-11-17 16:26:10,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:26:10,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786544767] [2023-11-17 16:26:10,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:26:10,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:26:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:26:11,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:26:11,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:26:11,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786544767] [2023-11-17 16:26:11,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786544767] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:26:11,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:26:11,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:26:11,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34432179] [2023-11-17 16:26:11,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:26:11,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:26:11,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:26:11,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:26:11,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-17 16:26:11,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 164 [2023-11-17 16:26:11,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 55 transitions, 362 flow. Second operand has 6 states, 6 states have (on average 75.16666666666667) internal successors, (451), 6 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 16:26:11,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:26:11,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 164 [2023-11-17 16:26:11,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:26:11,337 INFO L124 PetriNetUnfolderBase]: 1136/1658 cut-off events. [2023-11-17 16:26:11,337 INFO L125 PetriNetUnfolderBase]: For 2111/2136 co-relation queries the response was YES. [2023-11-17 16:26:11,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5488 conditions, 1658 events. 1136/1658 cut-off events. For 2111/2136 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 7160 event pairs, 135 based on Foata normal form. 35/1687 useless extension candidates. Maximal degree in co-relation 4676. Up to 634 conditions per place. [2023-11-17 16:26:11,347 INFO L140 encePairwiseOnDemand]: 157/164 looper letters, 88 selfloop transitions, 33 changer transitions 3/125 dead transitions. [2023-11-17 16:26:11,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 125 transitions, 877 flow [2023-11-17 16:26:11,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:26:11,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:26:11,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 600 transitions. [2023-11-17 16:26:11,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5226480836236934 [2023-11-17 16:26:11,349 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 600 transitions. [2023-11-17 16:26:11,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 600 transitions. [2023-11-17 16:26:11,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:26:11,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 600 transitions. [2023-11-17 16:26:11,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.71428571428571) internal successors, (600), 7 states have internal predecessors, (600), 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 16:26:11,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 164.0) internal successors, (1312), 8 states have internal predecessors, (1312), 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 16:26:11,353 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 164.0) internal successors, (1312), 8 states have internal predecessors, (1312), 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 16:26:11,353 INFO L175 Difference]: Start difference. First operand has 47 places, 55 transitions, 362 flow. Second operand 7 states and 600 transitions. [2023-11-17 16:26:11,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 125 transitions, 877 flow [2023-11-17 16:26:11,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 125 transitions, 849 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-17 16:26:11,363 INFO L231 Difference]: Finished difference. Result has 55 places, 64 transitions, 531 flow [2023-11-17 16:26:11,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=531, PETRI_PLACES=55, PETRI_TRANSITIONS=64} [2023-11-17 16:26:11,365 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2023-11-17 16:26:11,365 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 64 transitions, 531 flow [2023-11-17 16:26:11,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.16666666666667) internal successors, (451), 6 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 16:26:11,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:26:11,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:26:11,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 16:26:11,365 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:26:11,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:26:11,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1570880461, now seen corresponding path program 1 times [2023-11-17 16:26:11,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:26:11,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159717983] [2023-11-17 16:26:11,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:26:11,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:26:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:26:11,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:26:11,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:26:11,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159717983] [2023-11-17 16:26:11,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159717983] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:26:11,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:26:11,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:26:11,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112049245] [2023-11-17 16:26:11,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:26:11,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:26:11,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:26:11,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:26:11,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 16:26:11,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 164 [2023-11-17 16:26:11,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 64 transitions, 531 flow. Second operand has 6 states, 6 states have (on average 73.33333333333333) internal successors, (440), 6 states have internal predecessors, (440), 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 16:26:11,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:26:11,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 164 [2023-11-17 16:26:11,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:26:11,930 INFO L124 PetriNetUnfolderBase]: 1113/1684 cut-off events. [2023-11-17 16:26:11,930 INFO L125 PetriNetUnfolderBase]: For 3758/3774 co-relation queries the response was YES. [2023-11-17 16:26:11,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6368 conditions, 1684 events. 1113/1684 cut-off events. For 3758/3774 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 7369 event pairs, 73 based on Foata normal form. 94/1776 useless extension candidates. Maximal degree in co-relation 5370. Up to 879 conditions per place. [2023-11-17 16:26:11,942 INFO L140 encePairwiseOnDemand]: 157/164 looper letters, 97 selfloop transitions, 22 changer transitions 3/123 dead transitions. [2023-11-17 16:26:11,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 123 transitions, 1047 flow [2023-11-17 16:26:11,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:26:11,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:26:11,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 573 transitions. [2023-11-17 16:26:11,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4991289198606272 [2023-11-17 16:26:11,944 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 573 transitions. [2023-11-17 16:26:11,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 573 transitions. [2023-11-17 16:26:11,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:26:11,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 573 transitions. [2023-11-17 16:26:11,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 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 16:26:11,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 164.0) internal successors, (1312), 8 states have internal predecessors, (1312), 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 16:26:11,947 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 164.0) internal successors, (1312), 8 states have internal predecessors, (1312), 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 16:26:11,947 INFO L175 Difference]: Start difference. First operand has 55 places, 64 transitions, 531 flow. Second operand 7 states and 573 transitions. [2023-11-17 16:26:11,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 123 transitions, 1047 flow [2023-11-17 16:26:11,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 123 transitions, 1036 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 16:26:11,959 INFO L231 Difference]: Finished difference. Result has 63 places, 74 transitions, 688 flow [2023-11-17 16:26:11,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=688, PETRI_PLACES=63, PETRI_TRANSITIONS=74} [2023-11-17 16:26:11,960 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2023-11-17 16:26:11,961 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 74 transitions, 688 flow [2023-11-17 16:26:11,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.33333333333333) internal successors, (440), 6 states have internal predecessors, (440), 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 16:26:11,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:26:11,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:26:11,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 16:26:11,961 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:26:11,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:26:11,962 INFO L85 PathProgramCache]: Analyzing trace with hash 475976740, now seen corresponding path program 1 times [2023-11-17 16:26:11,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:26:11,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641457891] [2023-11-17 16:26:11,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:26:11,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:26:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:26:12,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:26:12,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:26:12,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641457891] [2023-11-17 16:26:12,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641457891] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:26:12,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:26:12,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:26:12,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612709286] [2023-11-17 16:26:12,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:26:12,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:26:12,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:26:12,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:26:12,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:26:12,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 164 [2023-11-17 16:26:12,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 74 transitions, 688 flow. Second operand has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 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 16:26:12,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:26:12,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 164 [2023-11-17 16:26:12,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:26:12,415 INFO L124 PetriNetUnfolderBase]: 1339/2083 cut-off events. [2023-11-17 16:26:12,416 INFO L125 PetriNetUnfolderBase]: For 7271/7293 co-relation queries the response was YES. [2023-11-17 16:26:12,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8478 conditions, 2083 events. 1339/2083 cut-off events. For 7271/7293 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 10158 event pairs, 433 based on Foata normal form. 44/2116 useless extension candidates. Maximal degree in co-relation 7434. Up to 1179 conditions per place. [2023-11-17 16:26:12,429 INFO L140 encePairwiseOnDemand]: 157/164 looper letters, 81 selfloop transitions, 38 changer transitions 2/122 dead transitions. [2023-11-17 16:26:12,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 122 transitions, 1157 flow [2023-11-17 16:26:12,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:26:12,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:26:12,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 436 transitions. [2023-11-17 16:26:12,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5317073170731708 [2023-11-17 16:26:12,431 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 436 transitions. [2023-11-17 16:26:12,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 436 transitions. [2023-11-17 16:26:12,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:26:12,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 436 transitions. [2023-11-17 16:26:12,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.2) internal successors, (436), 5 states have internal predecessors, (436), 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 16:26:12,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 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 16:26:12,433 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 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 16:26:12,433 INFO L175 Difference]: Start difference. First operand has 63 places, 74 transitions, 688 flow. Second operand 5 states and 436 transitions. [2023-11-17 16:26:12,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 122 transitions, 1157 flow [2023-11-17 16:26:12,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 122 transitions, 1097 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-11-17 16:26:12,445 INFO L231 Difference]: Finished difference. Result has 67 places, 79 transitions, 808 flow [2023-11-17 16:26:12,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=808, PETRI_PLACES=67, PETRI_TRANSITIONS=79} [2023-11-17 16:26:12,446 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 36 predicate places. [2023-11-17 16:26:12,446 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 79 transitions, 808 flow [2023-11-17 16:26:12,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 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 16:26:12,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:26:12,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:26:12,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 16:26:12,447 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:26:12,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:26:12,447 INFO L85 PathProgramCache]: Analyzing trace with hash 510317406, now seen corresponding path program 2 times [2023-11-17 16:26:12,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:26:12,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924362423] [2023-11-17 16:26:12,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:26:12,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:26:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:26:12,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:26:12,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:26:12,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924362423] [2023-11-17 16:26:12,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924362423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:26:12,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:26:12,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:26:12,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692795965] [2023-11-17 16:26:12,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:26:12,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:26:12,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:26:12,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:26:12,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:26:12,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 164 [2023-11-17 16:26:12,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 79 transitions, 808 flow. Second operand has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 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 16:26:12,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:26:12,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 164 [2023-11-17 16:26:12,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:26:12,888 INFO L124 PetriNetUnfolderBase]: 1629/2567 cut-off events. [2023-11-17 16:26:12,888 INFO L125 PetriNetUnfolderBase]: For 12422/12459 co-relation queries the response was YES. [2023-11-17 16:26:12,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11784 conditions, 2567 events. 1629/2567 cut-off events. For 12422/12459 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 13341 event pairs, 481 based on Foata normal form. 43/2599 useless extension candidates. Maximal degree in co-relation 10470. Up to 1445 conditions per place. [2023-11-17 16:26:12,904 INFO L140 encePairwiseOnDemand]: 156/164 looper letters, 91 selfloop transitions, 74 changer transitions 5/171 dead transitions. [2023-11-17 16:26:12,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 171 transitions, 1991 flow [2023-11-17 16:26:12,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:26:12,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:26:12,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 518 transitions. [2023-11-17 16:26:12,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5264227642276422 [2023-11-17 16:26:12,906 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 518 transitions. [2023-11-17 16:26:12,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 518 transitions. [2023-11-17 16:26:12,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:26:12,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 518 transitions. [2023-11-17 16:26:12,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 86.33333333333333) internal successors, (518), 6 states have internal predecessors, (518), 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 16:26:12,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 164.0) internal successors, (1148), 7 states have internal predecessors, (1148), 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 16:26:12,908 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 164.0) internal successors, (1148), 7 states have internal predecessors, (1148), 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 16:26:12,908 INFO L175 Difference]: Start difference. First operand has 67 places, 79 transitions, 808 flow. Second operand 6 states and 518 transitions. [2023-11-17 16:26:12,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 171 transitions, 1991 flow [2023-11-17 16:26:12,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 171 transitions, 1903 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-17 16:26:12,935 INFO L231 Difference]: Finished difference. Result has 74 places, 117 transitions, 1500 flow [2023-11-17 16:26:12,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1500, PETRI_PLACES=74, PETRI_TRANSITIONS=117} [2023-11-17 16:26:12,935 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 43 predicate places. [2023-11-17 16:26:12,936 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 117 transitions, 1500 flow [2023-11-17 16:26:12,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 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 16:26:12,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:26:12,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:26:12,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 16:26:12,936 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:26:12,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:26:12,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1747922147, now seen corresponding path program 2 times [2023-11-17 16:26:12,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:26:12,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578741247] [2023-11-17 16:26:12,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:26:12,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:26:12,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:26:13,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:26:13,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:26:13,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578741247] [2023-11-17 16:26:13,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578741247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:26:13,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:26:13,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:26:13,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017868473] [2023-11-17 16:26:13,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:26:13,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:26:13,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:26:13,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:26:13,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:26:13,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 164 [2023-11-17 16:26:13,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 117 transitions, 1500 flow. Second operand has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 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 16:26:13,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:26:13,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 164 [2023-11-17 16:26:13,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:26:13,352 INFO L124 PetriNetUnfolderBase]: 1642/2599 cut-off events. [2023-11-17 16:26:13,352 INFO L125 PetriNetUnfolderBase]: For 13309/13346 co-relation queries the response was YES. [2023-11-17 16:26:13,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12994 conditions, 2599 events. 1642/2599 cut-off events. For 13309/13346 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 13219 event pairs, 451 based on Foata normal form. 39/2632 useless extension candidates. Maximal degree in co-relation 10919. Up to 2271 conditions per place. [2023-11-17 16:26:13,404 INFO L140 encePairwiseOnDemand]: 157/164 looper letters, 123 selfloop transitions, 26 changer transitions 3/153 dead transitions. [2023-11-17 16:26:13,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 153 transitions, 1992 flow [2023-11-17 16:26:13,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:26:13,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:26:13,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 424 transitions. [2023-11-17 16:26:13,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170731707317073 [2023-11-17 16:26:13,406 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 424 transitions. [2023-11-17 16:26:13,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 424 transitions. [2023-11-17 16:26:13,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:26:13,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 424 transitions. [2023-11-17 16:26:13,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 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 16:26:13,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 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 16:26:13,409 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 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 16:26:13,409 INFO L175 Difference]: Start difference. First operand has 74 places, 117 transitions, 1500 flow. Second operand 5 states and 424 transitions. [2023-11-17 16:26:13,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 153 transitions, 1992 flow [2023-11-17 16:26:13,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 153 transitions, 1984 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-11-17 16:26:13,446 INFO L231 Difference]: Finished difference. Result has 80 places, 121 transitions, 1636 flow [2023-11-17 16:26:13,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=1492, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1636, PETRI_PLACES=80, PETRI_TRANSITIONS=121} [2023-11-17 16:26:13,448 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 49 predicate places. [2023-11-17 16:26:13,448 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 121 transitions, 1636 flow [2023-11-17 16:26:13,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 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 16:26:13,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:26:13,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:26:13,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 16:26:13,449 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:26:13,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:26:13,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1322145658, now seen corresponding path program 3 times [2023-11-17 16:26:13,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:26:13,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587168976] [2023-11-17 16:26:13,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:26:13,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:26:13,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:26:13,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:26:13,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:26:13,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587168976] [2023-11-17 16:26:13,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587168976] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:26:13,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:26:13,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:26:13,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143478445] [2023-11-17 16:26:13,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:26:13,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:26:13,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:26:13,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:26:13,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:26:13,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 164 [2023-11-17 16:26:13,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 121 transitions, 1636 flow. Second operand has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 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 16:26:13,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:26:13,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 164 [2023-11-17 16:26:13,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:26:14,036 INFO L124 PetriNetUnfolderBase]: 2065/3238 cut-off events. [2023-11-17 16:26:14,037 INFO L125 PetriNetUnfolderBase]: For 17071/17116 co-relation queries the response was YES. [2023-11-17 16:26:14,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16366 conditions, 3238 events. 2065/3238 cut-off events. For 17071/17116 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 17489 event pairs, 525 based on Foata normal form. 73/3303 useless extension candidates. Maximal degree in co-relation 13764. Up to 1239 conditions per place. [2023-11-17 16:26:14,054 INFO L140 encePairwiseOnDemand]: 157/164 looper letters, 94 selfloop transitions, 79 changer transitions 6/180 dead transitions. [2023-11-17 16:26:14,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 180 transitions, 2419 flow [2023-11-17 16:26:14,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:26:14,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:26:14,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 441 transitions. [2023-11-17 16:26:14,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5378048780487805 [2023-11-17 16:26:14,056 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 441 transitions. [2023-11-17 16:26:14,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 441 transitions. [2023-11-17 16:26:14,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:26:14,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 441 transitions. [2023-11-17 16:26:14,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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 16:26:14,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 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 16:26:14,058 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 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 16:26:14,058 INFO L175 Difference]: Start difference. First operand has 80 places, 121 transitions, 1636 flow. Second operand 5 states and 441 transitions. [2023-11-17 16:26:14,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 180 transitions, 2419 flow [2023-11-17 16:26:14,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 180 transitions, 2368 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-11-17 16:26:14,107 INFO L231 Difference]: Finished difference. Result has 83 places, 126 transitions, 1856 flow [2023-11-17 16:26:14,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=1596, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1856, PETRI_PLACES=83, PETRI_TRANSITIONS=126} [2023-11-17 16:26:14,108 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 52 predicate places. [2023-11-17 16:26:14,108 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 126 transitions, 1856 flow [2023-11-17 16:26:14,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 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 16:26:14,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:26:14,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:26:14,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 16:26:14,110 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:26:14,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:26:14,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1440222638, now seen corresponding path program 4 times [2023-11-17 16:26:14,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:26:14,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105574694] [2023-11-17 16:26:14,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:26:14,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:26:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:26:14,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:26:14,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:26:14,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105574694] [2023-11-17 16:26:14,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105574694] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:26:14,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:26:14,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:26:14,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229956293] [2023-11-17 16:26:14,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:26:14,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:26:14,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:26:14,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:26:14,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:26:14,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 164 [2023-11-17 16:26:14,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 126 transitions, 1856 flow. Second operand has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 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 16:26:14,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:26:14,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 164 [2023-11-17 16:26:14,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:26:14,671 INFO L124 PetriNetUnfolderBase]: 2420/3752 cut-off events. [2023-11-17 16:26:14,671 INFO L125 PetriNetUnfolderBase]: For 26469/26475 co-relation queries the response was YES. [2023-11-17 16:26:14,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19945 conditions, 3752 events. 2420/3752 cut-off events. For 26469/26475 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 20554 event pairs, 434 based on Foata normal form. 32/3769 useless extension candidates. Maximal degree in co-relation 18441. Up to 1624 conditions per place. [2023-11-17 16:26:14,695 INFO L140 encePairwiseOnDemand]: 156/164 looper letters, 132 selfloop transitions, 102 changer transitions 19/254 dead transitions. [2023-11-17 16:26:14,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 254 transitions, 3798 flow [2023-11-17 16:26:14,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:26:14,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:26:14,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 519 transitions. [2023-11-17 16:26:14,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5274390243902439 [2023-11-17 16:26:14,697 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 519 transitions. [2023-11-17 16:26:14,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 519 transitions. [2023-11-17 16:26:14,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:26:14,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 519 transitions. [2023-11-17 16:26:14,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 86.5) internal successors, (519), 6 states have internal predecessors, (519), 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 16:26:14,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 164.0) internal successors, (1148), 7 states have internal predecessors, (1148), 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 16:26:14,700 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 164.0) internal successors, (1148), 7 states have internal predecessors, (1148), 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 16:26:14,700 INFO L175 Difference]: Start difference. First operand has 83 places, 126 transitions, 1856 flow. Second operand 6 states and 519 transitions. [2023-11-17 16:26:14,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 254 transitions, 3798 flow [2023-11-17 16:26:14,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 254 transitions, 3738 flow, removed 24 selfloop flow, removed 1 redundant places. [2023-11-17 16:26:14,773 INFO L231 Difference]: Finished difference. Result has 90 places, 173 transitions, 3002 flow [2023-11-17 16:26:14,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=1824, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3002, PETRI_PLACES=90, PETRI_TRANSITIONS=173} [2023-11-17 16:26:14,775 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 59 predicate places. [2023-11-17 16:26:14,775 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 173 transitions, 3002 flow [2023-11-17 16:26:14,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 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 16:26:14,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:26:14,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:26:14,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 16:26:14,775 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:26:14,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:26:14,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1226825491, now seen corresponding path program 3 times [2023-11-17 16:26:14,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:26:14,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578925250] [2023-11-17 16:26:14,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:26:14,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:26:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:26:14,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:26:14,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:26:14,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578925250] [2023-11-17 16:26:14,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578925250] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:26:14,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:26:14,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:26:14,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081635559] [2023-11-17 16:26:14,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:26:14,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:26:14,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:26:14,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:26:14,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:26:14,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 164 [2023-11-17 16:26:14,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 173 transitions, 3002 flow. Second operand has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 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 16:26:14,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:26:14,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 164 [2023-11-17 16:26:14,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:26:15,302 INFO L124 PetriNetUnfolderBase]: 2206/3371 cut-off events. [2023-11-17 16:26:15,303 INFO L125 PetriNetUnfolderBase]: For 28590/28709 co-relation queries the response was YES. [2023-11-17 16:26:15,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19877 conditions, 3371 events. 2206/3371 cut-off events. For 28590/28709 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 17123 event pairs, 541 based on Foata normal form. 82/3441 useless extension candidates. Maximal degree in co-relation 17654. Up to 3018 conditions per place. [2023-11-17 16:26:15,322 INFO L140 encePairwiseOnDemand]: 158/164 looper letters, 189 selfloop transitions, 19 changer transitions 8/217 dead transitions. [2023-11-17 16:26:15,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 217 transitions, 3710 flow [2023-11-17 16:26:15,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:26:15,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:26:15,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 421 transitions. [2023-11-17 16:26:15,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5134146341463415 [2023-11-17 16:26:15,323 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 421 transitions. [2023-11-17 16:26:15,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 421 transitions. [2023-11-17 16:26:15,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:26:15,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 421 transitions. [2023-11-17 16:26:15,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 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 16:26:15,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 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 16:26:15,326 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 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 16:26:15,326 INFO L175 Difference]: Start difference. First operand has 90 places, 173 transitions, 3002 flow. Second operand 5 states and 421 transitions. [2023-11-17 16:26:15,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 217 transitions, 3710 flow [2023-11-17 16:26:15,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 217 transitions, 3510 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-11-17 16:26:15,388 INFO L231 Difference]: Finished difference. Result has 93 places, 169 transitions, 2774 flow [2023-11-17 16:26:15,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=2705, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2774, PETRI_PLACES=93, PETRI_TRANSITIONS=169} [2023-11-17 16:26:15,389 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2023-11-17 16:26:15,389 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 169 transitions, 2774 flow [2023-11-17 16:26:15,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 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 16:26:15,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:26:15,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:26:15,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 16:26:15,389 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:26:15,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:26:15,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1176641778, now seen corresponding path program 5 times [2023-11-17 16:26:15,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:26:15,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560555123] [2023-11-17 16:26:15,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:26:15,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:26:15,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:26:15,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:26:15,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:26:15,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560555123] [2023-11-17 16:26:15,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560555123] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:26:15,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594410637] [2023-11-17 16:26:15,535 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:26:15,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:26:15,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:26:15,538 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:26:15,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 16:26:15,631 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:26:15,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:26:15,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-17 16:26:15,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:26:15,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:26:15,788 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:26:15,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:26:15,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594410637] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:26:15,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:26:15,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 11 [2023-11-17 16:26:15,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522091464] [2023-11-17 16:26:15,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:26:15,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 16:26:15,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:26:15,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 16:26:15,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-17 16:26:15,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 164 [2023-11-17 16:26:15,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 169 transitions, 2774 flow. Second operand has 11 states, 11 states have (on average 72.45454545454545) internal successors, (797), 11 states have internal predecessors, (797), 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 16:26:15,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:26:15,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 164 [2023-11-17 16:26:15,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:26:16,965 INFO L124 PetriNetUnfolderBase]: 2925/4386 cut-off events. [2023-11-17 16:26:16,965 INFO L125 PetriNetUnfolderBase]: For 34666/34694 co-relation queries the response was YES. [2023-11-17 16:26:16,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25525 conditions, 4386 events. 2925/4386 cut-off events. For 34666/34694 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 22735 event pairs, 79 based on Foata normal form. 75/4457 useless extension candidates. Maximal degree in co-relation 24475. Up to 1515 conditions per place. [2023-11-17 16:26:16,996 INFO L140 encePairwiseOnDemand]: 153/164 looper letters, 189 selfloop transitions, 180 changer transitions 17/387 dead transitions. [2023-11-17 16:26:16,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 387 transitions, 5484 flow [2023-11-17 16:26:16,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-17 16:26:16,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-17 16:26:16,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1534 transitions. [2023-11-17 16:26:16,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4676829268292683 [2023-11-17 16:26:16,999 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1534 transitions. [2023-11-17 16:26:16,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1534 transitions. [2023-11-17 16:26:17,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:26:17,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1534 transitions. [2023-11-17 16:26:17,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 76.7) internal successors, (1534), 20 states have internal predecessors, (1534), 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 16:26:17,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 164.0) internal successors, (3444), 21 states have internal predecessors, (3444), 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 16:26:17,006 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 164.0) internal successors, (3444), 21 states have internal predecessors, (3444), 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 16:26:17,006 INFO L175 Difference]: Start difference. First operand has 93 places, 169 transitions, 2774 flow. Second operand 20 states and 1534 transitions. [2023-11-17 16:26:17,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 387 transitions, 5484 flow [2023-11-17 16:26:17,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 387 transitions, 5391 flow, removed 35 selfloop flow, removed 3 redundant places. [2023-11-17 16:26:17,178 INFO L231 Difference]: Finished difference. Result has 119 places, 245 transitions, 4382 flow [2023-11-17 16:26:17,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=2623, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4382, PETRI_PLACES=119, PETRI_TRANSITIONS=245} [2023-11-17 16:26:17,179 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 88 predicate places. [2023-11-17 16:26:17,179 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 245 transitions, 4382 flow [2023-11-17 16:26:17,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 72.45454545454545) internal successors, (797), 11 states have internal predecessors, (797), 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 16:26:17,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:26:17,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:26:17,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-17 16:26:17,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-17 16:26:17,384 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:26:17,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:26:17,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1700605722, now seen corresponding path program 1 times [2023-11-17 16:26:17,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:26:17,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94317514] [2023-11-17 16:26:17,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:26:17,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:26:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:26:17,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:26:17,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:26:17,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94317514] [2023-11-17 16:26:17,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94317514] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:26:17,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319697470] [2023-11-17 16:26:17,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:26:17,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:26:17,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:26:17,553 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:26:17,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 16:26:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:26:17,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 16:26:17,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:26:17,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:26:17,785 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:26:18,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:26:18,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319697470] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:26:18,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:26:18,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2023-11-17 16:26:18,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628690895] [2023-11-17 16:26:18,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:26:18,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 16:26:18,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:26:18,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 16:26:18,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-17 16:26:18,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 164 [2023-11-17 16:26:18,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 245 transitions, 4382 flow. Second operand has 10 states, 10 states have (on average 74.5) internal successors, (745), 10 states have internal predecessors, (745), 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 16:26:18,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:26:18,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 164 [2023-11-17 16:26:18,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:26:19,068 INFO L124 PetriNetUnfolderBase]: 4071/6419 cut-off events. [2023-11-17 16:26:19,068 INFO L125 PetriNetUnfolderBase]: For 70175/70338 co-relation queries the response was YES. [2023-11-17 16:26:19,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42331 conditions, 6419 events. 4071/6419 cut-off events. For 70175/70338 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 38293 event pairs, 211 based on Foata normal form. 66/6481 useless extension candidates. Maximal degree in co-relation 40163. Up to 3861 conditions per place. [2023-11-17 16:26:19,187 INFO L140 encePairwiseOnDemand]: 158/164 looper letters, 421 selfloop transitions, 126 changer transitions 6/554 dead transitions. [2023-11-17 16:26:19,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 554 transitions, 10202 flow [2023-11-17 16:26:19,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 16:26:19,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 16:26:19,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 658 transitions. [2023-11-17 16:26:19,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015243902439024 [2023-11-17 16:26:19,189 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 658 transitions. [2023-11-17 16:26:19,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 658 transitions. [2023-11-17 16:26:19,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:26:19,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 658 transitions. [2023-11-17 16:26:19,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 82.25) internal successors, (658), 8 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:26:19,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 164.0) internal successors, (1476), 9 states have internal predecessors, (1476), 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 16:26:19,192 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 164.0) internal successors, (1476), 9 states have internal predecessors, (1476), 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 16:26:19,192 INFO L175 Difference]: Start difference. First operand has 119 places, 245 transitions, 4382 flow. Second operand 8 states and 658 transitions. [2023-11-17 16:26:19,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 554 transitions, 10202 flow [2023-11-17 16:26:19,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 554 transitions, 9916 flow, removed 120 selfloop flow, removed 6 redundant places. [2023-11-17 16:26:19,417 INFO L231 Difference]: Finished difference. Result has 117 places, 328 transitions, 5931 flow [2023-11-17 16:26:19,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=4182, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5931, PETRI_PLACES=117, PETRI_TRANSITIONS=328} [2023-11-17 16:26:19,418 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 86 predicate places. [2023-11-17 16:26:19,418 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 328 transitions, 5931 flow [2023-11-17 16:26:19,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 74.5) internal successors, (745), 10 states have internal predecessors, (745), 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 16:26:19,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:26:19,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:26:19,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-17 16:26:19,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-17 16:26:19,619 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:26:19,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:26:19,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1071570426, now seen corresponding path program 2 times [2023-11-17 16:26:19,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:26:19,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214082524] [2023-11-17 16:26:19,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:26:19,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:26:19,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:26:19,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:26:19,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:26:19,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214082524] [2023-11-17 16:26:19,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214082524] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:26:19,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437976302] [2023-11-17 16:26:19,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:26:19,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:26:19,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:26:19,822 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:26:19,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 16:26:19,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:26:19,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:26:19,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 16:26:19,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:26:19,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:26:19,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:26:20,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:26:20,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437976302] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:26:20,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:26:20,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2023-11-17 16:26:20,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775928545] [2023-11-17 16:26:20,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:26:20,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 16:26:20,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:26:20,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 16:26:20,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-17 16:26:20,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 164 [2023-11-17 16:26:20,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 328 transitions, 5931 flow. Second operand has 10 states, 10 states have (on average 74.3) internal successors, (743), 10 states have internal predecessors, (743), 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 16:26:20,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:26:20,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 164 [2023-11-17 16:26:20,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:26:21,502 INFO L124 PetriNetUnfolderBase]: 4721/7465 cut-off events. [2023-11-17 16:26:21,502 INFO L125 PetriNetUnfolderBase]: For 85647/85882 co-relation queries the response was YES. [2023-11-17 16:26:21,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50748 conditions, 7465 events. 4721/7465 cut-off events. For 85647/85882 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 46347 event pairs, 371 based on Foata normal form. 72/7531 useless extension candidates. Maximal degree in co-relation 47521. Up to 5402 conditions per place. [2023-11-17 16:26:21,553 INFO L140 encePairwiseOnDemand]: 158/164 looper letters, 402 selfloop transitions, 151 changer transitions 7/561 dead transitions. [2023-11-17 16:26:21,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 561 transitions, 10918 flow [2023-11-17 16:26:21,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 16:26:21,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 16:26:21,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 643 transitions. [2023-11-17 16:26:21,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49009146341463417 [2023-11-17 16:26:21,555 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 643 transitions. [2023-11-17 16:26:21,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 643 transitions. [2023-11-17 16:26:21,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:26:21,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 643 transitions. [2023-11-17 16:26:21,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 80.375) internal successors, (643), 8 states have internal predecessors, (643), 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 16:26:21,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 164.0) internal successors, (1476), 9 states have internal predecessors, (1476), 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 16:26:21,557 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 164.0) internal successors, (1476), 9 states have internal predecessors, (1476), 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 16:26:21,558 INFO L175 Difference]: Start difference. First operand has 117 places, 328 transitions, 5931 flow. Second operand 8 states and 643 transitions. [2023-11-17 16:26:21,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 561 transitions, 10918 flow [2023-11-17 16:26:21,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 561 transitions, 10579 flow, removed 145 selfloop flow, removed 3 redundant places. [2023-11-17 16:26:21,892 INFO L231 Difference]: Finished difference. Result has 124 places, 403 transitions, 7660 flow [2023-11-17 16:26:21,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=5664, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7660, PETRI_PLACES=124, PETRI_TRANSITIONS=403} [2023-11-17 16:26:21,892 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 93 predicate places. [2023-11-17 16:26:21,893 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 403 transitions, 7660 flow [2023-11-17 16:26:21,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 74.3) internal successors, (743), 10 states have internal predecessors, (743), 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 16:26:21,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:26:21,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:26:21,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-17 16:26:22,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:26:22,097 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:26:22,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:26:22,098 INFO L85 PathProgramCache]: Analyzing trace with hash -805207809, now seen corresponding path program 1 times [2023-11-17 16:26:22,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:26:22,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636212021] [2023-11-17 16:26:22,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:26:22,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:26:22,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:26:22,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:26:22,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:26:22,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636212021] [2023-11-17 16:26:22,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636212021] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:26:22,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710103577] [2023-11-17 16:26:22,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:26:22,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:26:22,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:26:22,237 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:26:22,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 16:26:22,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:26:22,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-17 16:26:22,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:26:22,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:26:22,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:26:22,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:26:22,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710103577] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:26:22,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:26:22,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2023-11-17 16:26:22,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982287194] [2023-11-17 16:26:22,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:26:22,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 16:26:22,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:26:22,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 16:26:22,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2023-11-17 16:26:22,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 164 [2023-11-17 16:26:22,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 403 transitions, 7660 flow. Second operand has 20 states, 20 states have (on average 72.5) internal successors, (1450), 20 states have internal predecessors, (1450), 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 16:26:22,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:26:22,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 164 [2023-11-17 16:26:22,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:26:26,681 INFO L124 PetriNetUnfolderBase]: 8523/13090 cut-off events. [2023-11-17 16:26:26,681 INFO L125 PetriNetUnfolderBase]: For 154370/154378 co-relation queries the response was YES. [2023-11-17 16:26:26,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89714 conditions, 13090 events. 8523/13090 cut-off events. For 154370/154378 co-relation queries the response was YES. Maximal size of possible extension queue 819. Compared 84553 event pairs, 158 based on Foata normal form. 714/13803 useless extension candidates. Maximal degree in co-relation 87143. Up to 3986 conditions per place. [2023-11-17 16:26:26,764 INFO L140 encePairwiseOnDemand]: 153/164 looper letters, 756 selfloop transitions, 604 changer transitions 0/1361 dead transitions. [2023-11-17 16:26:26,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 1361 transitions, 22988 flow [2023-11-17 16:26:26,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-17 16:26:26,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-11-17 16:26:26,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 4052 transitions. [2023-11-17 16:26:26,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4844571975131516 [2023-11-17 16:26:26,770 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 4052 transitions. [2023-11-17 16:26:26,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 4052 transitions. [2023-11-17 16:26:26,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:26:26,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 4052 transitions. [2023-11-17 16:26:26,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 79.45098039215686) internal successors, (4052), 51 states have internal predecessors, (4052), 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 16:26:26,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 164.0) internal successors, (8528), 52 states have internal predecessors, (8528), 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 16:26:26,784 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 164.0) internal successors, (8528), 52 states have internal predecessors, (8528), 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 16:26:26,784 INFO L175 Difference]: Start difference. First operand has 124 places, 403 transitions, 7660 flow. Second operand 51 states and 4052 transitions. [2023-11-17 16:26:26,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 1361 transitions, 22988 flow [2023-11-17 16:26:27,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 1361 transitions, 22729 flow, removed 121 selfloop flow, removed 1 redundant places. [2023-11-17 16:26:27,592 INFO L231 Difference]: Finished difference. Result has 204 places, 936 transitions, 18685 flow [2023-11-17 16:26:27,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=7527, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=18685, PETRI_PLACES=204, PETRI_TRANSITIONS=936} [2023-11-17 16:26:27,593 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 173 predicate places. [2023-11-17 16:26:27,593 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 936 transitions, 18685 flow [2023-11-17 16:26:27,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 72.5) internal successors, (1450), 20 states have internal predecessors, (1450), 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 16:26:27,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:26:27,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:26:27,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 16:26:27,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-17 16:26:27,798 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:26:27,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:26:27,798 INFO L85 PathProgramCache]: Analyzing trace with hash 987374383, now seen corresponding path program 2 times [2023-11-17 16:26:27,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:26:27,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189580790] [2023-11-17 16:26:27,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:26:27,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:26:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:26:28,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:26:28,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:26:28,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189580790] [2023-11-17 16:26:28,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189580790] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:26:28,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827497711] [2023-11-17 16:26:28,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:26:28,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:26:28,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:26:28,007 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:26:28,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-17 16:26:28,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:26:28,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:26:28,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-17 16:26:28,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:26:28,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:26:28,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:26:28,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:26:28,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827497711] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:26:28,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:26:28,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 18 [2023-11-17 16:26:28,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342589315] [2023-11-17 16:26:28,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:26:28,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-17 16:26:28,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:26:28,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-17 16:26:28,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2023-11-17 16:26:28,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 164 [2023-11-17 16:26:28,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 936 transitions, 18685 flow. Second operand has 19 states, 19 states have (on average 72.52631578947368) internal successors, (1378), 19 states have internal predecessors, (1378), 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 16:26:28,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:26:28,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 164 [2023-11-17 16:26:28,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:26:37,676 INFO L124 PetriNetUnfolderBase]: 17040/26735 cut-off events. [2023-11-17 16:26:37,676 INFO L125 PetriNetUnfolderBase]: For 540741/540756 co-relation queries the response was YES. [2023-11-17 16:26:37,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229258 conditions, 26735 events. 17040/26735 cut-off events. For 540741/540756 co-relation queries the response was YES. Maximal size of possible extension queue 1527. Compared 196429 event pairs, 195 based on Foata normal form. 639/27372 useless extension candidates. Maximal degree in co-relation 227199. Up to 6281 conditions per place. [2023-11-17 16:26:37,959 INFO L140 encePairwiseOnDemand]: 153/164 looper letters, 1191 selfloop transitions, 2019 changer transitions 0/3211 dead transitions. [2023-11-17 16:26:37,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 3211 transitions, 67816 flow [2023-11-17 16:26:37,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-11-17 16:26:37,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2023-11-17 16:26:37,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 4970 transitions. [2023-11-17 16:26:37,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4887883556254917 [2023-11-17 16:26:37,966 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 4970 transitions. [2023-11-17 16:26:37,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 4970 transitions. [2023-11-17 16:26:37,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:26:37,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 4970 transitions. [2023-11-17 16:26:37,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 80.16129032258064) internal successors, (4970), 62 states have internal predecessors, (4970), 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 16:26:37,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 164.0) internal successors, (10332), 63 states have internal predecessors, (10332), 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 16:26:37,983 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 164.0) internal successors, (10332), 63 states have internal predecessors, (10332), 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 16:26:37,984 INFO L175 Difference]: Start difference. First operand has 204 places, 936 transitions, 18685 flow. Second operand 62 states and 4970 transitions. [2023-11-17 16:26:37,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 3211 transitions, 67816 flow [2023-11-17 16:26:45,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 3211 transitions, 64816 flow, removed 1454 selfloop flow, removed 7 redundant places. [2023-11-17 16:26:46,004 INFO L231 Difference]: Finished difference. Result has 303 places, 2499 transitions, 56618 flow [2023-11-17 16:26:46,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=17037, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=936, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=661, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=56618, PETRI_PLACES=303, PETRI_TRANSITIONS=2499} [2023-11-17 16:26:46,005 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 272 predicate places. [2023-11-17 16:26:46,005 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 2499 transitions, 56618 flow [2023-11-17 16:26:46,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 72.52631578947368) internal successors, (1378), 19 states have internal predecessors, (1378), 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 16:26:46,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:26:46,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:26:46,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-17 16:26:46,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-17 16:26:46,207 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:26:46,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:26:46,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1695962885, now seen corresponding path program 3 times [2023-11-17 16:26:46,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:26:46,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685633218] [2023-11-17 16:26:46,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:26:46,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:26:46,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:26:46,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:26:46,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:26:46,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685633218] [2023-11-17 16:26:46,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685633218] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:26:46,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581377708] [2023-11-17 16:26:46,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:26:46,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:26:46,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:26:46,353 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:26:46,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-17 16:26:46,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 16:26:46,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:26:46,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-17 16:26:46,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:26:46,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:26:46,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:26:46,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:26:46,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581377708] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:26:46,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:26:46,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 9] total 15 [2023-11-17 16:26:46,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301246899] [2023-11-17 16:26:46,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:26:46,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 16:26:46,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:26:46,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 16:26:46,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-11-17 16:26:46,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 164 [2023-11-17 16:26:46,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 2499 transitions, 56618 flow. Second operand has 16 states, 16 states have (on average 72.5) internal successors, (1160), 16 states have internal predecessors, (1160), 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 16:26:46,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:26:46,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 164 [2023-11-17 16:26:46,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:27:02,900 INFO L124 PetriNetUnfolderBase]: 19347/30778 cut-off events. [2023-11-17 16:27:02,901 INFO L125 PetriNetUnfolderBase]: For 923817/923828 co-relation queries the response was YES. [2023-11-17 16:27:03,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299787 conditions, 30778 events. 19347/30778 cut-off events. For 923817/923828 co-relation queries the response was YES. Maximal size of possible extension queue 1642. Compared 232456 event pairs, 296 based on Foata normal form. 360/31136 useless extension candidates. Maximal degree in co-relation 297594. Up to 6801 conditions per place. [2023-11-17 16:27:03,479 INFO L140 encePairwiseOnDemand]: 152/164 looper letters, 1384 selfloop transitions, 2454 changer transitions 6/3845 dead transitions. [2023-11-17 16:27:03,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 3845 transitions, 92339 flow [2023-11-17 16:27:03,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-17 16:27:03,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2023-11-17 16:27:03,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 4235 transitions. [2023-11-17 16:27:03,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4872296364473079 [2023-11-17 16:27:03,484 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 4235 transitions. [2023-11-17 16:27:03,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 4235 transitions. [2023-11-17 16:27:03,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:27:03,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 4235 transitions. [2023-11-17 16:27:03,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 79.90566037735849) internal successors, (4235), 53 states have internal predecessors, (4235), 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 16:27:03,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 164.0) internal successors, (8856), 54 states have internal predecessors, (8856), 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 16:27:03,504 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 164.0) internal successors, (8856), 54 states have internal predecessors, (8856), 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 16:27:03,504 INFO L175 Difference]: Start difference. First operand has 303 places, 2499 transitions, 56618 flow. Second operand 53 states and 4235 transitions. [2023-11-17 16:27:03,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 3845 transitions, 92339 flow [2023-11-17 16:27:36,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 3845 transitions, 85356 flow, removed 3460 selfloop flow, removed 1 redundant places. [2023-11-17 16:27:37,043 INFO L231 Difference]: Finished difference. Result has 397 places, 3367 transitions, 80562 flow [2023-11-17 16:27:37,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=50966, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1616, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=650, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=80562, PETRI_PLACES=397, PETRI_TRANSITIONS=3367} [2023-11-17 16:27:37,045 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 366 predicate places. [2023-11-17 16:27:37,045 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 3367 transitions, 80562 flow [2023-11-17 16:27:37,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 72.5) internal successors, (1160), 16 states have internal predecessors, (1160), 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 16:27:37,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:27:37,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:27:37,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-17 16:27:37,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-17 16:27:37,250 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:27:37,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:27:37,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1851111363, now seen corresponding path program 4 times [2023-11-17 16:27:37,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:27:37,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424146655] [2023-11-17 16:27:37,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:27:37,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:27:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:27:37,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:37,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:27:37,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424146655] [2023-11-17 16:27:37,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424146655] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:27:37,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067604547] [2023-11-17 16:27:37,364 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:27:37,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:27:37,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:27:37,365 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:27:37,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-17 16:27:37,434 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:27:37,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:27:37,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-17 16:27:37,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:27:37,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:37,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:27:37,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:27:37,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067604547] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:27:37,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:27:37,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 9] total 16 [2023-11-17 16:27:37,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293930940] [2023-11-17 16:27:37,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:27:37,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 16:27:37,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:27:37,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 16:27:37,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-11-17 16:27:37,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 164 [2023-11-17 16:27:37,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 3367 transitions, 80562 flow. Second operand has 17 states, 17 states have (on average 72.3529411764706) internal successors, (1230), 17 states have internal predecessors, (1230), 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 16:27:37,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:27:37,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 164 [2023-11-17 16:27:37,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:28:28,942 INFO L124 PetriNetUnfolderBase]: 43228/68129 cut-off events. [2023-11-17 16:28:28,943 INFO L125 PetriNetUnfolderBase]: For 2521456/2521467 co-relation queries the response was YES. [2023-11-17 16:28:30,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 721069 conditions, 68129 events. 43228/68129 cut-off events. For 2521456/2521467 co-relation queries the response was YES. Maximal size of possible extension queue 3676. Compared 565501 event pairs, 585 based on Foata normal form. 1784/69911 useless extension candidates. Maximal degree in co-relation 719458. Up to 14065 conditions per place. [2023-11-17 16:28:30,984 INFO L140 encePairwiseOnDemand]: 153/164 looper letters, 2026 selfloop transitions, 7179 changer transitions 2/9208 dead transitions. [2023-11-17 16:28:30,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 9208 transitions, 242473 flow [2023-11-17 16:28:30,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2023-11-17 16:28:30,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2023-11-17 16:28:30,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 8187 transitions. [2023-11-17 16:28:30,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48941893830703015 [2023-11-17 16:28:30,992 INFO L72 ComplementDD]: Start complementDD. Operand 102 states and 8187 transitions. [2023-11-17 16:28:30,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 102 states and 8187 transitions. [2023-11-17 16:28:30,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:28:30,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 102 states and 8187 transitions. [2023-11-17 16:28:31,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 103 states, 102 states have (on average 80.26470588235294) internal successors, (8187), 102 states have internal predecessors, (8187), 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 16:28:31,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 103 states, 103 states have (on average 164.0) internal successors, (16892), 103 states have internal predecessors, (16892), 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 16:28:31,014 INFO L81 ComplementDD]: Finished complementDD. Result has 103 states, 103 states have (on average 164.0) internal successors, (16892), 103 states have internal predecessors, (16892), 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 16:28:31,014 INFO L175 Difference]: Start difference. First operand has 397 places, 3367 transitions, 80562 flow. Second operand 102 states and 8187 transitions. [2023-11-17 16:28:31,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 9208 transitions, 242473 flow [2023-11-17 16:31:32,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 9208 transitions, 231336 flow, removed 3967 selfloop flow, removed 6 redundant places. [2023-11-17 16:31:32,829 INFO L231 Difference]: Finished difference. Result has 555 places, 8150 transitions, 221051 flow [2023-11-17 16:31:32,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=75201, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2784, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=102, PETRI_FLOW=221051, PETRI_PLACES=555, PETRI_TRANSITIONS=8150} [2023-11-17 16:31:32,832 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 524 predicate places. [2023-11-17 16:31:32,832 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 8150 transitions, 221051 flow [2023-11-17 16:31:32,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 72.3529411764706) internal successors, (1230), 17 states have internal predecessors, (1230), 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 16:31:32,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:31:32,833 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:31:32,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-17 16:31:33,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:31:33,037 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:31:33,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:31:33,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1472290461, now seen corresponding path program 3 times [2023-11-17 16:31:33,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:31:33,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174487837] [2023-11-17 16:31:33,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:31:33,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:31:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:31:33,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:31:33,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:31:33,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174487837] [2023-11-17 16:31:33,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174487837] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:31:33,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650527888] [2023-11-17 16:31:33,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:31:33,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:31:33,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:31:33,229 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:31:33,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-17 16:31:33,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 16:31:33,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:31:33,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-17 16:31:33,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:31:33,453 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:31:33,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:31:33,730 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:31:33,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650527888] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:31:33,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:31:33,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-17 16:31:33,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551786943] [2023-11-17 16:31:33,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:31:33,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 16:31:33,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:31:33,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 16:31:33,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-11-17 16:31:33,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 164 [2023-11-17 16:31:33,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 8150 transitions, 221051 flow. Second operand has 16 states, 16 states have (on average 75.25) internal successors, (1204), 16 states have internal predecessors, (1204), 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 16:31:33,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:31:33,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 164 [2023-11-17 16:31:33,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:34:30,662 INFO L124 PetriNetUnfolderBase]: 52981/84075 cut-off events. [2023-11-17 16:34:30,663 INFO L125 PetriNetUnfolderBase]: For 4814651/4814666 co-relation queries the response was YES. [2023-11-17 16:34:33,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1010324 conditions, 84075 events. 52981/84075 cut-off events. For 4814651/4814666 co-relation queries the response was YES. Maximal size of possible extension queue 4561. Compared 724132 event pairs, 1239 based on Foata normal form. 1667/85739 useless extension candidates. Maximal degree in co-relation 1008241. Up to 26770 conditions per place. [2023-11-17 16:34:34,389 INFO L140 encePairwiseOnDemand]: 156/164 looper letters, 5483 selfloop transitions, 6340 changer transitions 111/11935 dead transitions. [2023-11-17 16:34:34,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 11935 transitions, 342427 flow [2023-11-17 16:34:34,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-17 16:34:34,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-17 16:34:34,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2150 transitions. [2023-11-17 16:34:34,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5042213883677298 [2023-11-17 16:34:34,392 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2150 transitions. [2023-11-17 16:34:34,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2150 transitions. [2023-11-17 16:34:34,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:34:34,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2150 transitions. [2023-11-17 16:34:34,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 82.6923076923077) internal successors, (2150), 26 states have internal predecessors, (2150), 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 16:34:34,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 164.0) internal successors, (4428), 27 states have internal predecessors, (4428), 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 16:34:34,398 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 164.0) internal successors, (4428), 27 states have internal predecessors, (4428), 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 16:34:34,398 INFO L175 Difference]: Start difference. First operand has 555 places, 8150 transitions, 221051 flow. Second operand 26 states and 2150 transitions. [2023-11-17 16:34:34,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 11935 transitions, 342427 flow Received shutdown request... [2023-11-17 16:34:37,033 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 16:34:37,037 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 16:34:37,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-17 16:34:37,039 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 16:34:37,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:34:37,234 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-11-17 16:34:37,236 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 16:34:37,236 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 16:34:37,236 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 16:34:37,236 INFO L445 BasicCegarLoop]: Path program histogram: [5, 4, 3, 3, 3, 1] [2023-11-17 16:34:37,238 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 16:34:37,239 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 16:34:37,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 04:34:37 BasicIcfg [2023-11-17 16:34:37,240 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 16:34:37,241 INFO L158 Benchmark]: Toolchain (without parser) took 510328.81ms. Allocated memory was 182.5MB in the beginning and 4.4GB in the end (delta: 4.2GB). Free memory was 139.1MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 5.0GB. Max. memory is 8.0GB. [2023-11-17 16:34:37,241 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 182.5MB. Free memory was 140.1MB in the beginning and 140.0MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 16:34:37,241 INFO L158 Benchmark]: CACSL2BoogieTranslator took 168.10ms. Allocated memory is still 182.5MB. Free memory was 139.1MB in the beginning and 127.6MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-11-17 16:34:37,241 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.34ms. Allocated memory is still 182.5MB. Free memory was 127.6MB in the beginning and 125.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 16:34:37,241 INFO L158 Benchmark]: Boogie Preprocessor took 19.13ms. Allocated memory is still 182.5MB. Free memory was 125.9MB in the beginning and 124.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 16:34:37,241 INFO L158 Benchmark]: RCFGBuilder took 299.18ms. Allocated memory is still 182.5MB. Free memory was 124.5MB in the beginning and 106.6MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-11-17 16:34:37,242 INFO L158 Benchmark]: TraceAbstraction took 509818.06ms. Allocated memory was 182.5MB in the beginning and 4.4GB in the end (delta: 4.2GB). Free memory was 106.0MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 5.0GB. Max. memory is 8.0GB. [2023-11-17 16:34:37,242 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 182.5MB. Free memory was 140.1MB in the beginning and 140.0MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 168.10ms. Allocated memory is still 182.5MB. Free memory was 139.1MB in the beginning and 127.6MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.34ms. Allocated memory is still 182.5MB. Free memory was 127.6MB in the beginning and 125.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.13ms. Allocated memory is still 182.5MB. Free memory was 125.9MB in the beginning and 124.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 299.18ms. Allocated memory is still 182.5MB. Free memory was 124.5MB in the beginning and 106.6MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 509818.06ms. Allocated memory was 182.5MB in the beginning and 4.4GB in the end (delta: 4.2GB). Free memory was 106.0MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 5.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 87 PlacesBefore, 31 PlacesAfterwards, 84 TransitionsBefore, 24 TransitionsAfterwards, 1026 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 6 ConcurrentYvCompositions, 4 ChoiceCompositions, 66 TotalNumberOfCompositions, 1424 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1160, independent: 1134, independent conditional: 0, independent unconditional: 1134, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 666, independent: 660, independent conditional: 0, independent unconditional: 660, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 666, independent: 660, independent conditional: 0, independent unconditional: 660, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 33, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1160, independent: 474, independent conditional: 0, independent unconditional: 474, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 666, unknown conditional: 0, unknown unconditional: 666] , Statistics on independence cache: Total cache size (in pairs): 81, Positive cache size: 77, Positive conditional cache size: 0, Positive unconditional cache size: 77, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 117 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 509.7s, OverallIterations: 19, TraceHistogramMax: 2, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 498.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2576 SdHoareTripleChecker+Valid, 8.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2576 mSDsluCounter, 80 SdHoareTripleChecker+Invalid, 7.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 471 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10703 IncrementalHoareTripleChecker+Invalid, 11174 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 471 mSolverCounterUnsat, 43 mSDtfsCounter, 10703 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 702 GetRequests, 297 SyntacticMatches, 7 SemanticMatches, 398 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8094 ImplicationChecksByTransitivity, 7.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=221051occurred in iteration=18, InterpolantAutomatonStates: 367, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.1s InterpolantComputationTime, 578 NumberOfCodeBlocks, 578 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 719 ConstructedInterpolants, 0 QuantifiedInterpolants, 8452 SizeOfPredicates, 38 NumberOfNonLiveVariables, 1384 ConjunctsInSsa, 106 ConjunctsInUnsatCore, 35 InterpolantComputations, 11 PerfectInterpolantSequences, 22/61 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown