/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 --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -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 12:27:26,004 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 12:27:26,096 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 12:27:26,128 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 12:27:26,129 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 12:27:26,130 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 12:27:26,130 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 12:27:26,131 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 12:27:26,131 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 12:27:26,135 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 12:27:26,135 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 12:27:26,135 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 12:27:26,135 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 12:27:26,136 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 12:27:26,137 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 12:27:26,137 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 12:27:26,137 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 12:27:26,137 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 12:27:26,137 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 12:27:26,138 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 12:27:26,138 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 12:27:26,139 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 12:27:26,139 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 12:27:26,139 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 12:27:26,139 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 12:27:26,139 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:27:26,140 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 12:27:26,140 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 12:27:26,140 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 12:27:26,140 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 12:27:26,141 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 12:27:26,141 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 12:27:26,141 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 12:27:26,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 12:27:26,389 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 12:27:26,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 12:27:26,392 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 12:27:26,393 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 12:27:26,394 INFO L431 ainManager$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 12:27:27,569 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 12:27:27,751 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 12:27:27,752 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c [2023-11-17 12:27:27,760 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be40b200f/6e3514fa71fb4f6e8a4aab99c2873a0c/FLAGde07a9bf0 [2023-11-17 12:27:27,771 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be40b200f/6e3514fa71fb4f6e8a4aab99c2873a0c [2023-11-17 12:27:27,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 12:27:27,774 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 12:27:27,775 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 12:27:27,775 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 12:27:27,782 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 12:27:27,782 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:27:27" (1/1) ... [2023-11-17 12:27:27,784 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79d4069a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:27:27, skipping insertion in model container [2023-11-17 12:27:27,784 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:27:27" (1/1) ... [2023-11-17 12:27:27,808 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 12:27:27,976 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 12:27:27,982 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:27:27,990 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 12:27:28,014 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 12:27:28,017 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:27:28,023 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:27:28,024 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:27:28,029 INFO L206 MainTranslator]: Completed translation [2023-11-17 12:27:28,029 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:27:28 WrapperNode [2023-11-17 12:27:28,030 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 12:27:28,031 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 12:27:28,031 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 12:27:28,031 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 12:27:28,037 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:27:28" (1/1) ... [2023-11-17 12:27:28,043 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:27:28" (1/1) ... [2023-11-17 12:27:28,059 INFO L138 Inliner]: procedures = 22, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2023-11-17 12:27:28,060 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 12:27:28,060 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 12:27:28,061 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 12:27:28,061 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 12:27:28,068 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:27:28" (1/1) ... [2023-11-17 12:27:28,069 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:27:28" (1/1) ... [2023-11-17 12:27:28,071 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:27:28" (1/1) ... [2023-11-17 12:27:28,071 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:27:28" (1/1) ... [2023-11-17 12:27:28,082 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:27:28" (1/1) ... [2023-11-17 12:27:28,086 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:27:28" (1/1) ... [2023-11-17 12:27:28,087 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:27:28" (1/1) ... [2023-11-17 12:27:28,088 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:27:28" (1/1) ... [2023-11-17 12:27:28,090 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 12:27:28,091 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 12:27:28,091 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 12:27:28,092 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 12:27:28,092 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:27:28" (1/1) ... [2023-11-17 12:27:28,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:27:28,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:27:28,119 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 12:27:28,130 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 12:27:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 12:27:28,150 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 12:27:28,150 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 12:27:28,150 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 12:27:28,150 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 12:27:28,150 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 12:27:28,150 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 12:27:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 12:27:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 12:27:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 12:27:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 12:27:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 12:27:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 12:27:28,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 12:27:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 12:27:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 12:27:28,153 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 12:27:28,231 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 12:27:28,232 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 12:27:28,396 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 12:27:28,594 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 12:27:28,594 INFO L307 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-17 12:27:28,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:27:28 BoogieIcfgContainer [2023-11-17 12:27:28,596 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 12:27:28,598 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 12:27:28,598 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 12:27:28,601 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 12:27:28,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:27:27" (1/3) ... [2023-11-17 12:27:28,602 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f545f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:27:28, skipping insertion in model container [2023-11-17 12:27:28,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:27:28" (2/3) ... [2023-11-17 12:27:28,602 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f545f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:27:28, skipping insertion in model container [2023-11-17 12:27:28,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:27:28" (3/3) ... [2023-11-17 12:27:28,604 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-mult-equiv.wvr.c [2023-11-17 12:27:28,620 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 12:27:28,620 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 12:27:28,620 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 12:27:28,688 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-17 12:27:28,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 34 transitions, 89 flow [2023-11-17 12:27:28,755 INFO L124 PetriNetUnfolderBase]: 3/31 cut-off events. [2023-11-17 12:27:28,756 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 12:27:28,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 31 events. 3/31 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 44 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2023-11-17 12:27:28,760 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 34 transitions, 89 flow [2023-11-17 12:27:28,763 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 30 transitions, 78 flow [2023-11-17 12:27:28,766 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 12:27:28,779 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 30 transitions, 78 flow [2023-11-17 12:27:28,781 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 30 transitions, 78 flow [2023-11-17 12:27:28,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 30 transitions, 78 flow [2023-11-17 12:27:28,793 INFO L124 PetriNetUnfolderBase]: 3/30 cut-off events. [2023-11-17 12:27:28,793 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 12:27:28,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 30 events. 3/30 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 43 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2023-11-17 12:27:28,795 INFO L119 LiptonReduction]: Number of co-enabled transitions 328 [2023-11-17 12:27:29,276 INFO L134 LiptonReduction]: Checked pairs total: 350 [2023-11-17 12:27:29,277 INFO L136 LiptonReduction]: Total number of compositions: 6 [2023-11-17 12:27:29,303 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 12:27:29,309 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;@4f1a8802, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 12:27:29,309 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 12:27:29,321 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 12:27:29,321 INFO L124 PetriNetUnfolderBase]: 3/23 cut-off events. [2023-11-17 12:27:29,321 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 12:27:29,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:27:29,322 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 12:27:29,322 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 12:27:29,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:27:29,327 INFO L85 PathProgramCache]: Analyzing trace with hash -894833231, now seen corresponding path program 1 times [2023-11-17 12:27:29,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:27:29,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445265956] [2023-11-17 12:27:29,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:27:29,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:27:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:27:29,945 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 12:27:29,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:27:29,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445265956] [2023-11-17 12:27:29,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445265956] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:27:29,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:27:29,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 12:27:29,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729579056] [2023-11-17 12:27:29,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:27:29,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:27:29,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:27:29,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:27:29,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:27:29,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2023-11-17 12:27:29,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 12:27:29,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:27:29,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2023-11-17 12:27:29,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:27:30,192 INFO L124 PetriNetUnfolderBase]: 514/760 cut-off events. [2023-11-17 12:27:30,192 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2023-11-17 12:27:30,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1548 conditions, 760 events. 514/760 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2810 event pairs, 95 based on Foata normal form. 1/533 useless extension candidates. Maximal degree in co-relation 1238. Up to 536 conditions per place. [2023-11-17 12:27:30,204 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 34 selfloop transitions, 4 changer transitions 1/42 dead transitions. [2023-11-17 12:27:30,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 42 transitions, 195 flow [2023-11-17 12:27:30,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:27:30,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:27:30,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2023-11-17 12:27:30,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2023-11-17 12:27:30,218 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 82 transitions. [2023-11-17 12:27:30,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 82 transitions. [2023-11-17 12:27:30,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:27:30,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 82 transitions. [2023-11-17 12:27:30,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 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 12:27:30,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 12:27:30,231 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 12:27:30,233 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 66 flow. Second operand 3 states and 82 transitions. [2023-11-17 12:27:30,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 42 transitions, 195 flow [2023-11-17 12:27:30,239 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 12:27:30,241 INFO L231 Difference]: Finished difference. Result has 28 places, 27 transitions, 80 flow [2023-11-17 12:27:30,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, 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 12:27:30,248 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -3 predicate places. [2023-11-17 12:27:30,249 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 27 transitions, 80 flow [2023-11-17 12:27:30,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 12:27:30,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:27:30,249 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 12:27:30,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 12:27:30,250 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 12:27:30,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:27:30,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1406749067, now seen corresponding path program 1 times [2023-11-17 12:27:30,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:27:30,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59201061] [2023-11-17 12:27:30,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:27:30,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:27:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:27:30,494 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 12:27:30,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:27:30,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59201061] [2023-11-17 12:27:30,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59201061] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:27:30,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:27:30,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 12:27:30,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543107382] [2023-11-17 12:27:30,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:27:30,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 12:27:30,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:27:30,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 12:27:30,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-17 12:27:30,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2023-11-17 12:27:30,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 27 transitions, 80 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 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 12:27:30,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:27:30,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2023-11-17 12:27:30,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:27:30,774 INFO L124 PetriNetUnfolderBase]: 592/882 cut-off events. [2023-11-17 12:27:30,775 INFO L125 PetriNetUnfolderBase]: For 164/168 co-relation queries the response was YES. [2023-11-17 12:27:30,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2067 conditions, 882 events. 592/882 cut-off events. For 164/168 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3406 event pairs, 46 based on Foata normal form. 43/923 useless extension candidates. Maximal degree in co-relation 420. Up to 410 conditions per place. [2023-11-17 12:27:30,782 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 72 selfloop transitions, 12 changer transitions 0/85 dead transitions. [2023-11-17 12:27:30,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 85 transitions, 397 flow [2023-11-17 12:27:30,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 12:27:30,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 12:27:30,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2023-11-17 12:27:30,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-11-17 12:27:30,788 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 140 transitions. [2023-11-17 12:27:30,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 140 transitions. [2023-11-17 12:27:30,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:27:30,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 140 transitions. [2023-11-17 12:27:30,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 0 states have call successors, (0), 0 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 12:27:30,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 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 12:27:30,794 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 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 12:27:30,794 INFO L175 Difference]: Start difference. First operand has 28 places, 27 transitions, 80 flow. Second operand 7 states and 140 transitions. [2023-11-17 12:27:30,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 85 transitions, 397 flow [2023-11-17 12:27:30,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 85 transitions, 389 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:27:30,797 INFO L231 Difference]: Finished difference. Result has 37 places, 36 transitions, 156 flow [2023-11-17 12:27:30,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=156, PETRI_PLACES=37, PETRI_TRANSITIONS=36} [2023-11-17 12:27:30,799 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 6 predicate places. [2023-11-17 12:27:30,799 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 36 transitions, 156 flow [2023-11-17 12:27:30,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 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 12:27:30,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:27:30,800 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 12:27:30,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 12:27:30,804 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 12:27:30,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:27:30,808 INFO L85 PathProgramCache]: Analyzing trace with hash 504367241, now seen corresponding path program 2 times [2023-11-17 12:27:30,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:27:30,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616694344] [2023-11-17 12:27:30,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:27:30,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:27:30,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:27:31,053 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 12:27:31,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:27:31,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616694344] [2023-11-17 12:27:31,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616694344] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:27:31,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:27:31,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:27:31,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737073514] [2023-11-17 12:27:31,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:27:31,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:27:31,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:27:31,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:27:31,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:27:31,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2023-11-17 12:27:31,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 156 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 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 12:27:31,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:27:31,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2023-11-17 12:27:31,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:27:31,372 INFO L124 PetriNetUnfolderBase]: 1172/1742 cut-off events. [2023-11-17 12:27:31,372 INFO L125 PetriNetUnfolderBase]: For 1068/1088 co-relation queries the response was YES. [2023-11-17 12:27:31,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4930 conditions, 1742 events. 1172/1742 cut-off events. For 1068/1088 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 7712 event pairs, 139 based on Foata normal form. 40/1780 useless extension candidates. Maximal degree in co-relation 3358. Up to 659 conditions per place. [2023-11-17 12:27:31,386 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 96 selfloop transitions, 19 changer transitions 0/116 dead transitions. [2023-11-17 12:27:31,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 116 transitions, 648 flow [2023-11-17 12:27:31,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 12:27:31,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 12:27:31,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2023-11-17 12:27:31,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5642857142857143 [2023-11-17 12:27:31,388 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 158 transitions. [2023-11-17 12:27:31,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 158 transitions. [2023-11-17 12:27:31,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:27:31,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 158 transitions. [2023-11-17 12:27:31,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 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 12:27:31,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 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 12:27:31,420 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 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 12:27:31,420 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 156 flow. Second operand 7 states and 158 transitions. [2023-11-17 12:27:31,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 116 transitions, 648 flow [2023-11-17 12:27:31,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 116 transitions, 648 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 12:27:31,426 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 310 flow [2023-11-17 12:27:31,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=310, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2023-11-17 12:27:31,427 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2023-11-17 12:27:31,427 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 310 flow [2023-11-17 12:27:31,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 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 12:27:31,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:27:31,427 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 12:27:31,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 12:27:31,428 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 12:27:31,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:27:31,428 INFO L85 PathProgramCache]: Analyzing trace with hash 833943445, now seen corresponding path program 3 times [2023-11-17 12:27:31,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:27:31,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505787492] [2023-11-17 12:27:31,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:27:31,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:27:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:27:31,578 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 12:27:31,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:27:31,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505787492] [2023-11-17 12:27:31,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505787492] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:27:31,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:27:31,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:27:31,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866213349] [2023-11-17 12:27:31,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:27:31,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:27:31,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:27:31,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:27:31,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:27:31,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2023-11-17 12:27:31,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 310 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 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 12:27:31,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:27:31,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2023-11-17 12:27:31,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:27:31,873 INFO L124 PetriNetUnfolderBase]: 1146/1700 cut-off events. [2023-11-17 12:27:31,874 INFO L125 PetriNetUnfolderBase]: For 4146/4192 co-relation queries the response was YES. [2023-11-17 12:27:31,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6311 conditions, 1700 events. 1146/1700 cut-off events. For 4146/4192 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 7416 event pairs, 251 based on Foata normal form. 44/1737 useless extension candidates. Maximal degree in co-relation 4373. Up to 1200 conditions per place. [2023-11-17 12:27:31,890 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 63 selfloop transitions, 18 changer transitions 3/85 dead transitions. [2023-11-17 12:27:31,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 85 transitions, 639 flow [2023-11-17 12:27:31,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:27:31,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:27:31,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2023-11-17 12:27:31,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2023-11-17 12:27:31,893 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 115 transitions. [2023-11-17 12:27:31,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 115 transitions. [2023-11-17 12:27:31,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:27:31,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 115 transitions. [2023-11-17 12:27:31,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 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 12:27:31,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 40.0) internal successors, (280), 7 states have internal predecessors, (280), 0 states have call successors, (0), 0 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 12:27:31,897 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 40.0) internal successors, (280), 7 states have internal predecessors, (280), 0 states have call successors, (0), 0 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 12:27:31,897 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 310 flow. Second operand 6 states and 115 transitions. [2023-11-17 12:27:31,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 85 transitions, 639 flow [2023-11-17 12:27:31,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 85 transitions, 635 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-17 12:27:31,912 INFO L231 Difference]: Finished difference. Result has 55 places, 52 transitions, 389 flow [2023-11-17 12:27:31,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=389, PETRI_PLACES=55, PETRI_TRANSITIONS=52} [2023-11-17 12:27:31,913 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2023-11-17 12:27:31,914 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 52 transitions, 389 flow [2023-11-17 12:27:31,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 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 12:27:31,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:27:31,914 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 12:27:31,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 12:27:31,914 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 12:27:31,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:27:31,915 INFO L85 PathProgramCache]: Analyzing trace with hash -2053111047, now seen corresponding path program 1 times [2023-11-17 12:27:31,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:27:31,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751593706] [2023-11-17 12:27:31,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:27:31,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:27:31,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:27:32,138 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 12:27:32,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:27:32,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751593706] [2023-11-17 12:27:32,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751593706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:27:32,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:27:32,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 12:27:32,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802558008] [2023-11-17 12:27:32,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:27:32,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:27:32,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:27:32,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:27:32,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:27:32,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2023-11-17 12:27:32,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 52 transitions, 389 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 12:27:32,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:27:32,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2023-11-17 12:27:32,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:27:32,503 INFO L124 PetriNetUnfolderBase]: 1391/2129 cut-off events. [2023-11-17 12:27:32,503 INFO L125 PetriNetUnfolderBase]: For 6706/6735 co-relation queries the response was YES. [2023-11-17 12:27:32,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8176 conditions, 2129 events. 1391/2129 cut-off events. For 6706/6735 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 10490 event pairs, 470 based on Foata normal form. 54/2177 useless extension candidates. Maximal degree in co-relation 5903. Up to 1208 conditions per place. [2023-11-17 12:27:32,522 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 70 selfloop transitions, 25 changer transitions 0/96 dead transitions. [2023-11-17 12:27:32,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 96 transitions, 758 flow [2023-11-17 12:27:32,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:27:32,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:27:32,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2023-11-17 12:27:32,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53 [2023-11-17 12:27:32,525 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 106 transitions. [2023-11-17 12:27:32,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 106 transitions. [2023-11-17 12:27:32,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:27:32,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 106 transitions. [2023-11-17 12:27:32,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 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 12:27:32,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 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 12:27:32,527 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 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 12:27:32,527 INFO L175 Difference]: Start difference. First operand has 55 places, 52 transitions, 389 flow. Second operand 5 states and 106 transitions. [2023-11-17 12:27:32,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 96 transitions, 758 flow [2023-11-17 12:27:32,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 96 transitions, 731 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-17 12:27:32,543 INFO L231 Difference]: Finished difference. Result has 60 places, 58 transitions, 505 flow [2023-11-17 12:27:32,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=505, PETRI_PLACES=60, PETRI_TRANSITIONS=58} [2023-11-17 12:27:32,545 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 29 predicate places. [2023-11-17 12:27:32,546 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 58 transitions, 505 flow [2023-11-17 12:27:32,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 12:27:32,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:27:32,546 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 12:27:32,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 12:27:32,546 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 12:27:32,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:27:32,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1960242687, now seen corresponding path program 2 times [2023-11-17 12:27:32,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:27:32,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713193307] [2023-11-17 12:27:32,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:27:32,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:27:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:27:32,810 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 12:27:32,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:27:32,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713193307] [2023-11-17 12:27:32,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713193307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:27:32,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:27:32,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 12:27:32,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668689468] [2023-11-17 12:27:32,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:27:32,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:27:32,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:27:32,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:27:32,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:27:32,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2023-11-17 12:27:32,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 58 transitions, 505 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 12:27:32,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:27:32,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2023-11-17 12:27:32,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:27:33,272 INFO L124 PetriNetUnfolderBase]: 1845/2819 cut-off events. [2023-11-17 12:27:33,272 INFO L125 PetriNetUnfolderBase]: For 14831/14831 co-relation queries the response was YES. [2023-11-17 12:27:33,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12429 conditions, 2819 events. 1845/2819 cut-off events. For 14831/14831 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 14917 event pairs, 298 based on Foata normal form. 28/2847 useless extension candidates. Maximal degree in co-relation 11225. Up to 1136 conditions per place. [2023-11-17 12:27:33,300 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 107 selfloop transitions, 59 changer transitions 9/176 dead transitions. [2023-11-17 12:27:33,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 176 transitions, 1931 flow [2023-11-17 12:27:33,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:27:33,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:27:33,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 123 transitions. [2023-11-17 12:27:33,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2023-11-17 12:27:33,301 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 123 transitions. [2023-11-17 12:27:33,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 123 transitions. [2023-11-17 12:27:33,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:27:33,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 123 transitions. [2023-11-17 12:27:33,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 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 12:27:33,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 40.0) internal successors, (280), 7 states have internal predecessors, (280), 0 states have call successors, (0), 0 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 12:27:33,303 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 40.0) internal successors, (280), 7 states have internal predecessors, (280), 0 states have call successors, (0), 0 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 12:27:33,303 INFO L175 Difference]: Start difference. First operand has 60 places, 58 transitions, 505 flow. Second operand 6 states and 123 transitions. [2023-11-17 12:27:33,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 176 transitions, 1931 flow [2023-11-17 12:27:33,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 176 transitions, 1807 flow, removed 28 selfloop flow, removed 1 redundant places. [2023-11-17 12:27:33,334 INFO L231 Difference]: Finished difference. Result has 68 places, 109 transitions, 1308 flow [2023-11-17 12:27:33,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1308, PETRI_PLACES=68, PETRI_TRANSITIONS=109} [2023-11-17 12:27:33,335 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 37 predicate places. [2023-11-17 12:27:33,335 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 109 transitions, 1308 flow [2023-11-17 12:27:33,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 12:27:33,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:27:33,336 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 12:27:33,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 12:27:33,336 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 12:27:33,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:27:33,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1898028266, now seen corresponding path program 1 times [2023-11-17 12:27:33,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:27:33,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931202644] [2023-11-17 12:27:33,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:27:33,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:27:33,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:27:33,553 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 12:27:33,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:27:33,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931202644] [2023-11-17 12:27:33,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931202644] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:27:33,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:27:33,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:27:33,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488859719] [2023-11-17 12:27:33,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:27:33,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:27:33,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:27:33,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:27:33,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:27:33,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2023-11-17 12:27:33,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 109 transitions, 1308 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 12:27:33,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:27:33,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2023-11-17 12:27:33,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:27:34,039 INFO L124 PetriNetUnfolderBase]: 2179/3301 cut-off events. [2023-11-17 12:27:34,039 INFO L125 PetriNetUnfolderBase]: For 17133/17157 co-relation queries the response was YES. [2023-11-17 12:27:34,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16296 conditions, 3301 events. 2179/3301 cut-off events. For 17133/17157 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 16826 event pairs, 421 based on Foata normal form. 127/3426 useless extension candidates. Maximal degree in co-relation 13974. Up to 2562 conditions per place. [2023-11-17 12:27:34,069 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 142 selfloop transitions, 22 changer transitions 6/171 dead transitions. [2023-11-17 12:27:34,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 171 transitions, 2124 flow [2023-11-17 12:27:34,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:27:34,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:27:34,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2023-11-17 12:27:34,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.535 [2023-11-17 12:27:34,070 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 107 transitions. [2023-11-17 12:27:34,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 107 transitions. [2023-11-17 12:27:34,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:27:34,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 107 transitions. [2023-11-17 12:27:34,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 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 12:27:34,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 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 12:27:34,072 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 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 12:27:34,072 INFO L175 Difference]: Start difference. First operand has 68 places, 109 transitions, 1308 flow. Second operand 5 states and 107 transitions. [2023-11-17 12:27:34,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 171 transitions, 2124 flow [2023-11-17 12:27:34,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 171 transitions, 2124 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 12:27:34,122 INFO L231 Difference]: Finished difference. Result has 73 places, 111 transitions, 1385 flow [2023-11-17 12:27:34,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1308, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1385, PETRI_PLACES=73, PETRI_TRANSITIONS=111} [2023-11-17 12:27:34,123 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 42 predicate places. [2023-11-17 12:27:34,123 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 111 transitions, 1385 flow [2023-11-17 12:27:34,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 12:27:34,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:27:34,123 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 12:27:34,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 12:27:34,124 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 12:27:34,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:27:34,124 INFO L85 PathProgramCache]: Analyzing trace with hash -446594449, now seen corresponding path program 3 times [2023-11-17 12:27:34,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:27:34,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757952328] [2023-11-17 12:27:34,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:27:34,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:27:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:27:34,410 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 12:27:34,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:27:34,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757952328] [2023-11-17 12:27:34,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757952328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:27:34,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:27:34,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 12:27:34,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144559209] [2023-11-17 12:27:34,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:27:34,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:27:34,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:27:34,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:27:34,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:27:34,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2023-11-17 12:27:34,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 111 transitions, 1385 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 12:27:34,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:27:34,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2023-11-17 12:27:34,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:27:34,935 INFO L124 PetriNetUnfolderBase]: 2215/3380 cut-off events. [2023-11-17 12:27:34,935 INFO L125 PetriNetUnfolderBase]: For 21395/21423 co-relation queries the response was YES. [2023-11-17 12:27:34,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17469 conditions, 3380 events. 2215/3380 cut-off events. For 21395/21423 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 17939 event pairs, 612 based on Foata normal form. 50/3426 useless extension candidates. Maximal degree in co-relation 14373. Up to 1864 conditions per place. [2023-11-17 12:27:34,961 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 83 selfloop transitions, 73 changer transitions 5/162 dead transitions. [2023-11-17 12:27:34,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 162 transitions, 1981 flow [2023-11-17 12:27:34,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:27:34,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:27:34,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2023-11-17 12:27:34,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2023-11-17 12:27:34,963 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 110 transitions. [2023-11-17 12:27:34,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 110 transitions. [2023-11-17 12:27:34,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:27:34,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 110 transitions. [2023-11-17 12:27:34,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 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 12:27:34,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 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 12:27:34,964 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 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 12:27:34,964 INFO L175 Difference]: Start difference. First operand has 73 places, 111 transitions, 1385 flow. Second operand 5 states and 110 transitions. [2023-11-17 12:27:34,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 162 transitions, 1981 flow [2023-11-17 12:27:35,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 162 transitions, 1951 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 12:27:35,010 INFO L231 Difference]: Finished difference. Result has 78 places, 113 transitions, 1616 flow [2023-11-17 12:27:35,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1343, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1616, PETRI_PLACES=78, PETRI_TRANSITIONS=113} [2023-11-17 12:27:35,011 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 47 predicate places. [2023-11-17 12:27:35,011 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 113 transitions, 1616 flow [2023-11-17 12:27:35,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 12:27:35,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:27:35,011 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 12:27:35,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 12:27:35,012 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 12:27:35,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:27:35,012 INFO L85 PathProgramCache]: Analyzing trace with hash 731717181, now seen corresponding path program 4 times [2023-11-17 12:27:35,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:27:35,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219181059] [2023-11-17 12:27:35,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:27:35,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:27:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:27:35,256 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 12:27:35,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:27:35,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219181059] [2023-11-17 12:27:35,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219181059] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:27:35,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961129009] [2023-11-17 12:27:35,261 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 12:27:35,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:27:35,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:27:35,264 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 12:27:35,288 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 12:27:35,355 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 12:27:35,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:27:35,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-17 12:27:35,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:27:35,591 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 12:27:35,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:27:35,838 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 12:27:35,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961129009] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:27:35,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:27:35,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 11 [2023-11-17 12:27:35,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815658915] [2023-11-17 12:27:35,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:27:35,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 12:27:35,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:27:35,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 12:27:35,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-17 12:27:35,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2023-11-17 12:27:35,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 113 transitions, 1616 flow. Second operand has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 11 states have internal predecessors, (137), 0 states have call successors, (0), 0 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 12:27:35,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:27:35,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2023-11-17 12:27:35,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:27:37,699 INFO L124 PetriNetUnfolderBase]: 3969/6092 cut-off events. [2023-11-17 12:27:37,699 INFO L125 PetriNetUnfolderBase]: For 44380/44404 co-relation queries the response was YES. [2023-11-17 12:27:37,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33898 conditions, 6092 events. 3969/6092 cut-off events. For 44380/44404 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 34832 event pairs, 241 based on Foata normal form. 160/6250 useless extension candidates. Maximal degree in co-relation 28220. Up to 1962 conditions per place. [2023-11-17 12:27:37,823 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 221 selfloop transitions, 195 changer transitions 54/471 dead transitions. [2023-11-17 12:27:37,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 471 transitions, 5495 flow [2023-11-17 12:27:37,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-17 12:27:37,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-17 12:27:37,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 513 transitions. [2023-11-17 12:27:37,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4932692307692308 [2023-11-17 12:27:37,827 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 513 transitions. [2023-11-17 12:27:37,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 513 transitions. [2023-11-17 12:27:37,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:27:37,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 513 transitions. [2023-11-17 12:27:37,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 19.73076923076923) internal successors, (513), 26 states have internal predecessors, (513), 0 states have call successors, (0), 0 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 12:27:37,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 40.0) internal successors, (1080), 27 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:27:37,832 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 40.0) internal successors, (1080), 27 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:27:37,833 INFO L175 Difference]: Start difference. First operand has 78 places, 113 transitions, 1616 flow. Second operand 26 states and 513 transitions. [2023-11-17 12:27:37,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 471 transitions, 5495 flow [2023-11-17 12:27:38,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 471 transitions, 5338 flow, removed 13 selfloop flow, removed 1 redundant places. [2023-11-17 12:27:38,026 INFO L231 Difference]: Finished difference. Result has 116 places, 246 transitions, 3946 flow [2023-11-17 12:27:38,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1540, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3946, PETRI_PLACES=116, PETRI_TRANSITIONS=246} [2023-11-17 12:27:38,027 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 85 predicate places. [2023-11-17 12:27:38,027 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 246 transitions, 3946 flow [2023-11-17 12:27:38,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 11 states have internal predecessors, (137), 0 states have call successors, (0), 0 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 12:27:38,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:27:38,028 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, 1] [2023-11-17 12:27:38,040 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 12:27:38,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:27:38,234 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 12:27:38,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:27:38,234 INFO L85 PathProgramCache]: Analyzing trace with hash -915776931, now seen corresponding path program 5 times [2023-11-17 12:27:38,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:27:38,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903371124] [2023-11-17 12:27:38,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:27:38,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:27:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:27:38,444 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 12:27:38,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:27:38,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903371124] [2023-11-17 12:27:38,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903371124] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:27:38,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:27:38,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 12:27:38,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859743218] [2023-11-17 12:27:38,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:27:38,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:27:38,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:27:38,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:27:38,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:27:38,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2023-11-17 12:27:38,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 246 transitions, 3946 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 12:27:38,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:27:38,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2023-11-17 12:27:38,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:27:39,650 INFO L124 PetriNetUnfolderBase]: 4478/6795 cut-off events. [2023-11-17 12:27:39,651 INFO L125 PetriNetUnfolderBase]: For 71840/71842 co-relation queries the response was YES. [2023-11-17 12:27:39,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43481 conditions, 6795 events. 4478/6795 cut-off events. For 71840/71842 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 39797 event pairs, 738 based on Foata normal form. 134/6927 useless extension candidates. Maximal degree in co-relation 42950. Up to 2390 conditions per place. [2023-11-17 12:27:39,716 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 204 selfloop transitions, 190 changer transitions 5/400 dead transitions. [2023-11-17 12:27:39,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 400 transitions, 6714 flow [2023-11-17 12:27:39,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:27:39,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:27:39,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2023-11-17 12:27:39,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2023-11-17 12:27:39,718 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 124 transitions. [2023-11-17 12:27:39,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 124 transitions. [2023-11-17 12:27:39,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:27:39,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 124 transitions. [2023-11-17 12:27:39,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 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 12:27:39,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 40.0) internal successors, (280), 7 states have internal predecessors, (280), 0 states have call successors, (0), 0 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 12:27:39,719 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 40.0) internal successors, (280), 7 states have internal predecessors, (280), 0 states have call successors, (0), 0 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 12:27:39,719 INFO L175 Difference]: Start difference. First operand has 116 places, 246 transitions, 3946 flow. Second operand 6 states and 124 transitions. [2023-11-17 12:27:39,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 400 transitions, 6714 flow [2023-11-17 12:27:40,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 400 transitions, 5776 flow, removed 340 selfloop flow, removed 7 redundant places. [2023-11-17 12:27:40,101 INFO L231 Difference]: Finished difference. Result has 118 places, 304 transitions, 4808 flow [2023-11-17 12:27:40,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3293, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4808, PETRI_PLACES=118, PETRI_TRANSITIONS=304} [2023-11-17 12:27:40,102 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 87 predicate places. [2023-11-17 12:27:40,103 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 304 transitions, 4808 flow [2023-11-17 12:27:40,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 12:27:40,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:27:40,103 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 12:27:40,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 12:27:40,103 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 12:27:40,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:27:40,104 INFO L85 PathProgramCache]: Analyzing trace with hash -2128018787, now seen corresponding path program 6 times [2023-11-17 12:27:40,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:27:40,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290827406] [2023-11-17 12:27:40,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:27:40,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:27:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:27:40,256 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 12:27:40,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:27:40,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290827406] [2023-11-17 12:27:40,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290827406] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:27:40,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:27:40,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:27:40,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402932325] [2023-11-17 12:27:40,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:27:40,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:27:40,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:27:40,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:27:40,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:27:40,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2023-11-17 12:27:40,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 304 transitions, 4808 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 12:27:40,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:27:40,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2023-11-17 12:27:40,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:27:41,517 INFO L124 PetriNetUnfolderBase]: 4544/6875 cut-off events. [2023-11-17 12:27:41,518 INFO L125 PetriNetUnfolderBase]: For 69017/69041 co-relation queries the response was YES. [2023-11-17 12:27:41,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45015 conditions, 6875 events. 4544/6875 cut-off events. For 69017/69041 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 39510 event pairs, 668 based on Foata normal form. 26/6901 useless extension candidates. Maximal degree in co-relation 44510. Up to 6563 conditions per place. [2023-11-17 12:27:41,587 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 336 selfloop transitions, 22 changer transitions 3/362 dead transitions. [2023-11-17 12:27:41,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 362 transitions, 6083 flow [2023-11-17 12:27:41,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:27:41,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:27:41,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2023-11-17 12:27:41,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2023-11-17 12:27:41,589 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 114 transitions. [2023-11-17 12:27:41,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 114 transitions. [2023-11-17 12:27:41,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:27:41,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 114 transitions. [2023-11-17 12:27:41,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 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 12:27:41,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 40.0) internal successors, (280), 7 states have internal predecessors, (280), 0 states have call successors, (0), 0 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 12:27:41,590 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 40.0) internal successors, (280), 7 states have internal predecessors, (280), 0 states have call successors, (0), 0 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 12:27:41,591 INFO L175 Difference]: Start difference. First operand has 118 places, 304 transitions, 4808 flow. Second operand 6 states and 114 transitions. [2023-11-17 12:27:41,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 362 transitions, 6083 flow [2023-11-17 12:27:41,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 362 transitions, 6000 flow, removed 34 selfloop flow, removed 1 redundant places. [2023-11-17 12:27:41,974 INFO L231 Difference]: Finished difference. Result has 124 places, 312 transitions, 4882 flow [2023-11-17 12:27:41,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4734, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4882, PETRI_PLACES=124, PETRI_TRANSITIONS=312} [2023-11-17 12:27:41,975 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 93 predicate places. [2023-11-17 12:27:41,975 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 312 transitions, 4882 flow [2023-11-17 12:27:41,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 12:27:41,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:27:41,975 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 12:27:41,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 12:27:41,976 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 12:27:41,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:27:41,976 INFO L85 PathProgramCache]: Analyzing trace with hash 605917467, now seen corresponding path program 7 times [2023-11-17 12:27:41,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:27:41,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830695287] [2023-11-17 12:27:41,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:27:41,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:27:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:27:42,097 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 12:27:42,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:27:42,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830695287] [2023-11-17 12:27:42,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830695287] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:27:42,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:27:42,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:27:42,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990760657] [2023-11-17 12:27:42,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:27:42,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:27:42,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:27:42,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:27:42,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:27:42,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2023-11-17 12:27:42,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 312 transitions, 4882 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 12:27:42,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:27:42,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2023-11-17 12:27:42,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:27:43,176 INFO L124 PetriNetUnfolderBase]: 4466/6675 cut-off events. [2023-11-17 12:27:43,176 INFO L125 PetriNetUnfolderBase]: For 66964/67068 co-relation queries the response was YES. [2023-11-17 12:27:43,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44070 conditions, 6675 events. 4466/6675 cut-off events. For 66964/67068 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 37419 event pairs, 671 based on Foata normal form. 43/6718 useless extension candidates. Maximal degree in co-relation 43605. Up to 6596 conditions per place. [2023-11-17 12:27:43,237 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 291 selfloop transitions, 17 changer transitions 5/314 dead transitions. [2023-11-17 12:27:43,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 314 transitions, 5423 flow [2023-11-17 12:27:43,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:27:43,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:27:43,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2023-11-17 12:27:43,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2023-11-17 12:27:43,238 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 80 transitions. [2023-11-17 12:27:43,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 80 transitions. [2023-11-17 12:27:43,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:27:43,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 80 transitions. [2023-11-17 12:27:43,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 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 12:27:43,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 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 12:27:43,240 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 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 12:27:43,240 INFO L175 Difference]: Start difference. First operand has 124 places, 312 transitions, 4882 flow. Second operand 5 states and 80 transitions. [2023-11-17 12:27:43,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 314 transitions, 5423 flow [2023-11-17 12:27:43,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 314 transitions, 5267 flow, removed 63 selfloop flow, removed 4 redundant places. [2023-11-17 12:27:43,576 INFO L231 Difference]: Finished difference. Result has 124 places, 304 transitions, 4633 flow [2023-11-17 12:27:43,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4603, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4633, PETRI_PLACES=124, PETRI_TRANSITIONS=304} [2023-11-17 12:27:43,577 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 93 predicate places. [2023-11-17 12:27:43,577 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 304 transitions, 4633 flow [2023-11-17 12:27:43,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 12:27:43,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:27:43,578 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 12:27:43,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-17 12:27:43,578 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 12:27:43,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:27:43,578 INFO L85 PathProgramCache]: Analyzing trace with hash 860037750, now seen corresponding path program 1 times [2023-11-17 12:27:43,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:27:43,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140255969] [2023-11-17 12:27:43,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:27:43,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:27:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:27:43,844 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 12:27:43,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:27:43,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140255969] [2023-11-17 12:27:43,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140255969] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:27:43,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234284130] [2023-11-17 12:27:43,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:27:43,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:27:43,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:27:43,846 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 12:27:43,868 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 12:27:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:27:43,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 12:27:43,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:27:44,077 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 12:27:44,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:27:44,433 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 12:27:44,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234284130] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:27:44,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:27:44,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2023-11-17 12:27:44,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945466965] [2023-11-17 12:27:44,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:27:44,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 12:27:44,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:27:44,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 12:27:44,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-17 12:27:44,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2023-11-17 12:27:44,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 304 transitions, 4633 flow. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 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 12:27:44,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:27:44,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2023-11-17 12:27:44,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:27:46,364 INFO L124 PetriNetUnfolderBase]: 5820/9088 cut-off events. [2023-11-17 12:27:46,364 INFO L125 PetriNetUnfolderBase]: For 86413/86438 co-relation queries the response was YES. [2023-11-17 12:27:46,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59055 conditions, 9088 events. 5820/9088 cut-off events. For 86413/86438 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 57018 event pairs, 322 based on Foata normal form. 23/9111 useless extension candidates. Maximal degree in co-relation 58477. Up to 5611 conditions per place. [2023-11-17 12:27:46,431 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 479 selfloop transitions, 199 changer transitions 6/685 dead transitions. [2023-11-17 12:27:46,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 685 transitions, 11946 flow [2023-11-17 12:27:46,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 12:27:46,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 12:27:46,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 187 transitions. [2023-11-17 12:27:46,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5194444444444445 [2023-11-17 12:27:46,432 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 187 transitions. [2023-11-17 12:27:46,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 187 transitions. [2023-11-17 12:27:46,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:27:46,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 187 transitions. [2023-11-17 12:27:46,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 20.77777777777778) internal successors, (187), 9 states have internal predecessors, (187), 0 states have call successors, (0), 0 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 12:27:46,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 40.0) internal successors, (400), 10 states have internal predecessors, (400), 0 states have call successors, (0), 0 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 12:27:46,434 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 40.0) internal successors, (400), 10 states have internal predecessors, (400), 0 states have call successors, (0), 0 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 12:27:46,434 INFO L175 Difference]: Start difference. First operand has 124 places, 304 transitions, 4633 flow. Second operand 9 states and 187 transitions. [2023-11-17 12:27:46,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 685 transitions, 11946 flow [2023-11-17 12:27:46,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 685 transitions, 11750 flow, removed 81 selfloop flow, removed 4 redundant places. [2023-11-17 12:27:46,842 INFO L231 Difference]: Finished difference. Result has 130 places, 434 transitions, 7644 flow [2023-11-17 12:27:46,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4541, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7644, PETRI_PLACES=130, PETRI_TRANSITIONS=434} [2023-11-17 12:27:46,843 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 99 predicate places. [2023-11-17 12:27:46,843 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 434 transitions, 7644 flow [2023-11-17 12:27:46,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 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 12:27:46,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:27:46,843 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 12:27:46,849 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 12:27:47,048 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 12:27:47,049 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 12:27:47,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:27:47,049 INFO L85 PathProgramCache]: Analyzing trace with hash -967366114, now seen corresponding path program 2 times [2023-11-17 12:27:47,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:27:47,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853000195] [2023-11-17 12:27:47,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:27:47,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:27:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:27:47,355 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 12:27:47,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:27:47,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853000195] [2023-11-17 12:27:47,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853000195] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:27:47,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098102498] [2023-11-17 12:27:47,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 12:27:47,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:27:47,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:27:47,428 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 12:27:47,433 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 12:27:47,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 12:27:47,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:27:47,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 12:27:47,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:27:47,607 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 12:27:47,608 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:27:48,098 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 12:27:48,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098102498] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:27:48,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:27:48,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2023-11-17 12:27:48,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933317143] [2023-11-17 12:27:48,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:27:48,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 12:27:48,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:27:48,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 12:27:48,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-17 12:27:48,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2023-11-17 12:27:48,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 434 transitions, 7644 flow. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 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 12:27:48,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:27:48,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2023-11-17 12:27:48,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:27:50,123 INFO L124 PetriNetUnfolderBase]: 6515/10211 cut-off events. [2023-11-17 12:27:50,123 INFO L125 PetriNetUnfolderBase]: For 108565/108590 co-relation queries the response was YES. [2023-11-17 12:27:50,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69324 conditions, 10211 events. 6515/10211 cut-off events. For 108565/108590 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 66159 event pairs, 460 based on Foata normal form. 30/10241 useless extension candidates. Maximal degree in co-relation 68677. Up to 7470 conditions per place. [2023-11-17 12:27:50,189 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 468 selfloop transitions, 216 changer transitions 7/692 dead transitions. [2023-11-17 12:27:50,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 692 transitions, 13125 flow [2023-11-17 12:27:50,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 12:27:50,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 12:27:50,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2023-11-17 12:27:50,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2023-11-17 12:27:50,191 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 198 transitions. [2023-11-17 12:27:50,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 198 transitions. [2023-11-17 12:27:50,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:27:50,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 198 transitions. [2023-11-17 12:27:50,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 18.0) internal successors, (198), 11 states have internal predecessors, (198), 0 states have call successors, (0), 0 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 12:27:50,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 40.0) internal successors, (480), 12 states have internal predecessors, (480), 0 states have call successors, (0), 0 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 12:27:50,193 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 40.0) internal successors, (480), 12 states have internal predecessors, (480), 0 states have call successors, (0), 0 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 12:27:50,193 INFO L175 Difference]: Start difference. First operand has 130 places, 434 transitions, 7644 flow. Second operand 11 states and 198 transitions. [2023-11-17 12:27:50,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 692 transitions, 13125 flow [2023-11-17 12:27:50,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 692 transitions, 12664 flow, removed 219 selfloop flow, removed 2 redundant places. [2023-11-17 12:27:50,796 INFO L231 Difference]: Finished difference. Result has 143 places, 522 transitions, 9623 flow [2023-11-17 12:27:50,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7271, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9623, PETRI_PLACES=143, PETRI_TRANSITIONS=522} [2023-11-17 12:27:50,797 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2023-11-17 12:27:50,797 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 522 transitions, 9623 flow [2023-11-17 12:27:50,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 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 12:27:50,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:27:50,797 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 12:27:50,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 12:27:50,998 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 12:27:50,998 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 12:27:50,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:27:50,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1181392417, now seen corresponding path program 1 times [2023-11-17 12:27:50,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:27:50,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13333874] [2023-11-17 12:27:50,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:27:50,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:27:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:27:51,209 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 12:27:51,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:27:51,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13333874] [2023-11-17 12:27:51,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13333874] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:27:51,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657729656] [2023-11-17 12:27:51,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:27:51,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:27:51,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:27:51,211 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 12:27:51,229 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 12:27:51,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:27:51,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-17 12:27:51,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:27:51,497 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 12:27:51,497 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:27:51,830 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 12:27:51,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657729656] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:27:51,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:27:51,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2023-11-17 12:27:51,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666780621] [2023-11-17 12:27:51,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:27:51,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 12:27:51,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:27:51,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 12:27:51,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2023-11-17 12:27:51,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2023-11-17 12:27:51,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 522 transitions, 9623 flow. Second operand has 20 states, 20 states have (on average 9.45) internal successors, (189), 20 states have internal predecessors, (189), 0 states have call successors, (0), 0 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 12:27:51,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:27:51,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2023-11-17 12:27:51,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:27:56,272 INFO L124 PetriNetUnfolderBase]: 8696/13323 cut-off events. [2023-11-17 12:27:56,272 INFO L125 PetriNetUnfolderBase]: For 166285/166294 co-relation queries the response was YES. [2023-11-17 12:27:56,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93508 conditions, 13323 events. 8696/13323 cut-off events. For 166285/166294 co-relation queries the response was YES. Maximal size of possible extension queue 866. Compared 86139 event pairs, 162 based on Foata normal form. 989/14312 useless extension candidates. Maximal degree in co-relation 93228. Up to 4333 conditions per place. [2023-11-17 12:27:56,490 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 808 selfloop transitions, 714 changer transitions 6/1529 dead transitions. [2023-11-17 12:27:56,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 1529 transitions, 26012 flow [2023-11-17 12:27:56,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-17 12:27:56,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-11-17 12:27:56,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 841 transitions. [2023-11-17 12:27:56,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4122549019607843 [2023-11-17 12:27:56,501 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 841 transitions. [2023-11-17 12:27:56,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 841 transitions. [2023-11-17 12:27:56,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:27:56,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 841 transitions. [2023-11-17 12:27:56,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 16.49019607843137) internal successors, (841), 51 states have internal predecessors, (841), 0 states have call successors, (0), 0 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 12:27:56,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 40.0) internal successors, (2080), 52 states have internal predecessors, (2080), 0 states have call successors, (0), 0 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 12:27:56,517 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 40.0) internal successors, (2080), 52 states have internal predecessors, (2080), 0 states have call successors, (0), 0 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 12:27:56,518 INFO L175 Difference]: Start difference. First operand has 143 places, 522 transitions, 9623 flow. Second operand 51 states and 841 transitions. [2023-11-17 12:27:56,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 1529 transitions, 26012 flow [2023-11-17 12:27:57,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 1529 transitions, 25238 flow, removed 314 selfloop flow, removed 9 redundant places. [2023-11-17 12:27:57,385 INFO L231 Difference]: Finished difference. Result has 213 places, 1068 transitions, 20759 flow [2023-11-17 12:27:57,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8090, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=20759, PETRI_PLACES=213, PETRI_TRANSITIONS=1068} [2023-11-17 12:27:57,386 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 182 predicate places. [2023-11-17 12:27:57,387 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 1068 transitions, 20759 flow [2023-11-17 12:27:57,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 9.45) internal successors, (189), 20 states have internal predecessors, (189), 0 states have call successors, (0), 0 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 12:27:57,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:27:57,387 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 12:27:57,392 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 12:27:57,589 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 12:27:57,590 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 12:27:57,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:27:57,590 INFO L85 PathProgramCache]: Analyzing trace with hash -409061149, now seen corresponding path program 2 times [2023-11-17 12:27:57,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:27:57,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401909733] [2023-11-17 12:27:57,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:27:57,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:27:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:27:57,803 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 12:27:57,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:27:57,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401909733] [2023-11-17 12:27:57,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401909733] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:27:57,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202175980] [2023-11-17 12:27:57,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 12:27:57,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:27:57,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:27:57,805 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 12:27:57,826 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 12:27:57,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 12:27:57,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:27:57,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-17 12:27:57,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:27:58,143 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 12:27:58,143 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:27:58,421 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 12:27:58,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202175980] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:27:58,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:27:58,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 9] total 17 [2023-11-17 12:27:58,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88158693] [2023-11-17 12:27:58,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:27:58,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 12:27:58,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:27:58,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 12:27:58,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2023-11-17 12:27:58,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2023-11-17 12:27:58,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 1068 transitions, 20759 flow. Second operand has 18 states, 18 states have (on average 9.277777777777779) internal successors, (167), 18 states have internal predecessors, (167), 0 states have call successors, (0), 0 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 12:27:58,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:27:58,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2023-11-17 12:27:58,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:28:08,642 INFO L124 PetriNetUnfolderBase]: 18375/28299 cut-off events. [2023-11-17 12:28:08,642 INFO L125 PetriNetUnfolderBase]: For 543078/543089 co-relation queries the response was YES. [2023-11-17 12:28:08,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243144 conditions, 28299 events. 18375/28299 cut-off events. For 543078/543089 co-relation queries the response was YES. Maximal size of possible extension queue 1507. Compared 201777 event pairs, 99 based on Foata normal form. 919/29218 useless extension candidates. Maximal degree in co-relation 241427. Up to 7643 conditions per place. [2023-11-17 12:28:08,952 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 841 selfloop transitions, 2904 changer transitions 0/3746 dead transitions. [2023-11-17 12:28:08,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 3746 transitions, 77628 flow [2023-11-17 12:28:08,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2023-11-17 12:28:08,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2023-11-17 12:28:08,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 1238 transitions. [2023-11-17 12:28:08,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41824324324324325 [2023-11-17 12:28:08,955 INFO L72 ComplementDD]: Start complementDD. Operand 74 states and 1238 transitions. [2023-11-17 12:28:08,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 1238 transitions. [2023-11-17 12:28:08,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:28:08,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 74 states and 1238 transitions. [2023-11-17 12:28:08,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 75 states, 74 states have (on average 16.72972972972973) internal successors, (1238), 74 states have internal predecessors, (1238), 0 states have call successors, (0), 0 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 12:28:08,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 75 states, 75 states have (on average 40.0) internal successors, (3000), 75 states have internal predecessors, (3000), 0 states have call successors, (0), 0 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 12:28:08,961 INFO L81 ComplementDD]: Finished complementDD. Result has 75 states, 75 states have (on average 40.0) internal successors, (3000), 75 states have internal predecessors, (3000), 0 states have call successors, (0), 0 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 12:28:08,962 INFO L175 Difference]: Start difference. First operand has 213 places, 1068 transitions, 20759 flow. Second operand 74 states and 1238 transitions. [2023-11-17 12:28:08,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 3746 transitions, 77628 flow [2023-11-17 12:28:19,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 3746 transitions, 71577 flow, removed 2958 selfloop flow, removed 6 redundant places. [2023-11-17 12:28:19,458 INFO L231 Difference]: Finished difference. Result has 325 places, 3289 transitions, 71232 flow [2023-11-17 12:28:19,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=18295, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1063, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=909, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=74, PETRI_FLOW=71232, PETRI_PLACES=325, PETRI_TRANSITIONS=3289} [2023-11-17 12:28:19,459 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 294 predicate places. [2023-11-17 12:28:19,459 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 3289 transitions, 71232 flow [2023-11-17 12:28:19,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.277777777777779) internal successors, (167), 18 states have internal predecessors, (167), 0 states have call successors, (0), 0 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 12:28:19,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:28:19,460 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 12:28:19,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-17 12:28:19,664 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 12:28:19,665 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 12:28:19,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:28:19,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1935447725, now seen corresponding path program 3 times [2023-11-17 12:28:19,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:28:19,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769887700] [2023-11-17 12:28:19,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:28:19,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:28:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:28:19,837 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 12:28:19,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:28:19,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769887700] [2023-11-17 12:28:19,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769887700] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:28:19,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303566435] [2023-11-17 12:28:19,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 12:28:19,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:28:19,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:28:19,839 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 12:28:19,862 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 12:28:19,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 12:28:19,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:28:19,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-17 12:28:19,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:28:20,004 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 12:28:20,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:28:20,282 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 12:28:20,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303566435] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:28:20,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:28:20,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 9] total 16 [2023-11-17 12:28:20,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146857157] [2023-11-17 12:28:20,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:28:20,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 12:28:20,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:28:20,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 12:28:20,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2023-11-17 12:28:20,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2023-11-17 12:28:20,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 3289 transitions, 71232 flow. Second operand has 17 states, 17 states have (on average 9.470588235294118) internal successors, (161), 17 states have internal predecessors, (161), 0 states have call successors, (0), 0 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 12:28:20,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:28:20,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2023-11-17 12:28:20,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:29:15,035 INFO L124 PetriNetUnfolderBase]: 46174/71858 cut-off events. [2023-11-17 12:29:15,035 INFO L125 PetriNetUnfolderBase]: For 1797568/1797579 co-relation queries the response was YES. [2023-11-17 12:29:16,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 691523 conditions, 71858 events. 46174/71858 cut-off events. For 1797568/1797579 co-relation queries the response was YES. Maximal size of possible extension queue 3768. Compared 587928 event pairs, 503 based on Foata normal form. 1977/73835 useless extension candidates. Maximal degree in co-relation 690019. Up to 18707 conditions per place. [2023-11-17 12:29:16,985 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 2882 selfloop transitions, 7719 changer transitions 21/10623 dead transitions. [2023-11-17 12:29:16,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 10623 transitions, 253828 flow [2023-11-17 12:29:16,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2023-11-17 12:29:16,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2023-11-17 12:29:16,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 1975 transitions. [2023-11-17 12:29:16,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42564655172413796 [2023-11-17 12:29:16,991 INFO L72 ComplementDD]: Start complementDD. Operand 116 states and 1975 transitions. [2023-11-17 12:29:16,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 116 states and 1975 transitions. [2023-11-17 12:29:16,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:29:16,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 116 states and 1975 transitions. [2023-11-17 12:29:16,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 117 states, 116 states have (on average 17.025862068965516) internal successors, (1975), 116 states have internal predecessors, (1975), 0 states have call successors, (0), 0 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 12:29:17,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 117 states, 117 states have (on average 40.0) internal successors, (4680), 117 states have internal predecessors, (4680), 0 states have call successors, (0), 0 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 12:29:17,003 INFO L81 ComplementDD]: Finished complementDD. Result has 117 states, 117 states have (on average 40.0) internal successors, (4680), 117 states have internal predecessors, (4680), 0 states have call successors, (0), 0 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 12:29:17,003 INFO L175 Difference]: Start difference. First operand has 325 places, 3289 transitions, 71232 flow. Second operand 116 states and 1975 transitions. [2023-11-17 12:29:17,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 10623 transitions, 253828 flow [2023-11-17 12:32:17,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 10623 transitions, 229373 flow, removed 11392 selfloop flow, removed 4 redundant places. [2023-11-17 12:32:17,971 INFO L231 Difference]: Finished difference. Result has 519 places, 8844 transitions, 207597 flow [2023-11-17 12:32:17,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=62863, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2632, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=116, PETRI_FLOW=207597, PETRI_PLACES=519, PETRI_TRANSITIONS=8844} [2023-11-17 12:32:17,975 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 488 predicate places. [2023-11-17 12:32:17,975 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 8844 transitions, 207597 flow [2023-11-17 12:32:17,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.470588235294118) internal successors, (161), 17 states have internal predecessors, (161), 0 states have call successors, (0), 0 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 12:32:17,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:32:17,975 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 12:32:17,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-17 12:32:18,180 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 12:32:18,181 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 12:32:18,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:32:18,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1862387341, now seen corresponding path program 4 times [2023-11-17 12:32:18,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:32:18,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657575465] [2023-11-17 12:32:18,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:32:18,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:32:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:32:18,350 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 12:32:18,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:32:18,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657575465] [2023-11-17 12:32:18,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657575465] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:32:18,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165069178] [2023-11-17 12:32:18,351 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 12:32:18,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:32:18,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:32:18,352 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 12:32:18,355 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 12:32:18,434 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 12:32:18,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:32:18,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-17 12:32:18,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:32:18,522 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 12:32:18,522 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:32:18,829 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 12:32:18,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165069178] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:32:18,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:32:18,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 9] total 16 [2023-11-17 12:32:18,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530603068] [2023-11-17 12:32:18,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:32:18,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 12:32:18,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:32:18,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 12:32:18,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-11-17 12:32:18,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2023-11-17 12:32:18,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 8844 transitions, 207597 flow. Second operand has 17 states, 17 states have (on average 9.470588235294118) internal successors, (161), 17 states have internal predecessors, (161), 0 states have call successors, (0), 0 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 12:32:18,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:32:18,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2023-11-17 12:32:18,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-11-17 12:35:48,257 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 12:35:48,257 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 12:35:49,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 [2023-11-17 12:35:49,297 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 12:35:52,317 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 12:35:52,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-17 12:35:52,320 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-11-17 12:35:52,329 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 12:35:52,330 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 12:35:52,330 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 12:35:52,330 INFO L445 BasicCegarLoop]: Path program histogram: [7, 4, 3, 2, 1, 1] [2023-11-17 12:35:52,333 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 12:35:52,333 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 12:35:52,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 12:35:52 BasicIcfg [2023-11-17 12:35:52,335 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 12:35:52,336 INFO L158 Benchmark]: Toolchain (without parser) took 504561.45ms. Allocated memory was 183.5MB in the beginning and 5.7GB in the end (delta: 5.5GB). Free memory was 132.1MB in the beginning and 2.5GB in the end (delta: -2.3GB). Peak memory consumption was 3.8GB. Max. memory is 8.0GB. [2023-11-17 12:35:52,336 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 183.5MB. Free memory was 134.7MB in the beginning and 134.5MB in the end (delta: 165.1kB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 12:35:52,336 INFO L158 Benchmark]: CACSL2BoogieTranslator took 254.56ms. Allocated memory is still 183.5MB. Free memory was 132.1MB in the beginning and 120.6MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-11-17 12:35:52,336 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.15ms. Allocated memory is still 183.5MB. Free memory was 120.6MB in the beginning and 118.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 12:35:52,336 INFO L158 Benchmark]: Boogie Preprocessor took 30.21ms. Allocated memory is still 183.5MB. Free memory was 118.9MB in the beginning and 117.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 12:35:52,337 INFO L158 Benchmark]: RCFGBuilder took 504.64ms. Allocated memory was 183.5MB in the beginning and 302.0MB in the end (delta: 118.5MB). Free memory was 117.5MB in the beginning and 268.7MB in the end (delta: -151.2MB). Peak memory consumption was 39.1MB. Max. memory is 8.0GB. [2023-11-17 12:35:52,337 INFO L158 Benchmark]: TraceAbstraction took 503737.27ms. Allocated memory was 302.0MB in the beginning and 5.7GB in the end (delta: 5.4GB). Free memory was 267.6MB in the beginning and 2.5GB in the end (delta: -2.2GB). Peak memory consumption was 3.8GB. Max. memory is 8.0GB. [2023-11-17 12:35:52,338 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 183.5MB. Free memory was 134.7MB in the beginning and 134.5MB in the end (delta: 165.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 254.56ms. Allocated memory is still 183.5MB. Free memory was 132.1MB in the beginning and 120.6MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.15ms. Allocated memory is still 183.5MB. Free memory was 120.6MB in the beginning and 118.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.21ms. Allocated memory is still 183.5MB. Free memory was 118.9MB in the beginning and 117.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 504.64ms. Allocated memory was 183.5MB in the beginning and 302.0MB in the end (delta: 118.5MB). Free memory was 117.5MB in the beginning and 268.7MB in the end (delta: -151.2MB). Peak memory consumption was 39.1MB. Max. memory is 8.0GB. * TraceAbstraction took 503737.27ms. Allocated memory was 302.0MB in the beginning and 5.7GB in the end (delta: 5.4GB). Free memory was 267.6MB in the beginning and 2.5GB in the end (delta: -2.2GB). Peak memory consumption was 3.8GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.5s, 37 PlacesBefore, 31 PlacesAfterwards, 30 TransitionsBefore, 24 TransitionsAfterwards, 328 CoEnabledTransitionPairs, 1 FixpointIterations, 1 TrivialSequentialCompositions, 5 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 6 TotalNumberOfCompositions, 350 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 267, independent: 259, independent conditional: 0, independent unconditional: 259, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 187, independent: 179, independent conditional: 0, independent unconditional: 179, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 187, independent: 179, independent conditional: 0, independent unconditional: 179, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 8, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 132, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 132, dependent conditional: 0, dependent unconditional: 132, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 267, independent: 80, independent conditional: 0, independent unconditional: 80, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 187, unknown conditional: 0, unknown unconditional: 187] , Statistics on independence cache: Total cache size (in pairs): 79, Positive cache size: 75, Positive conditional cache size: 0, Positive unconditional cache size: 75, 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 Executor. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 51 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: 503.6s, OverallIterations: 18, TraceHistogramMax: 1, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 493.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2997 SdHoareTripleChecker+Valid, 10.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2997 mSDsluCounter, 75 SdHoareTripleChecker+Invalid, 8.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 514 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11125 IncrementalHoareTripleChecker+Invalid, 11639 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 514 mSolverCounterUnsat, 38 mSDtfsCounter, 11125 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 713 GetRequests, 253 SyntacticMatches, 1 SemanticMatches, 459 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13313 ImplicationChecksByTransitivity, 11.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=207597occurred in iteration=17, InterpolantAutomatonStates: 348, 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, 0.6s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 532 NumberOfCodeBlocks, 532 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 653 ConstructedInterpolants, 0 QuantifiedInterpolants, 6373 SizeOfPredicates, 30 NumberOfNonLiveVariables, 1227 ConjunctsInSsa, 93 ConjunctsInUnsatCore, 32 InterpolantComputations, 11 PerfectInterpolantSequences, 16/49 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