/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-word-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:57:12,654 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:57:12,741 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 15:57:12,775 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:57:12,776 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:57:12,777 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:57:12,777 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:57:12,778 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:57:12,778 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:57:12,782 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:57:12,783 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:57:12,783 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:57:12,783 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:57:12,784 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:57:12,785 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:57:12,785 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:57:12,785 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:57:12,785 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:57:12,785 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:57:12,786 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:57:12,786 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:57:12,787 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:57:12,787 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:57:12,787 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:57:12,787 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:57:12,787 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:57:12,788 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:57:12,788 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:57:12,788 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:57:12,788 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:57:12,789 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:57:12,789 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:57:12,790 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:57:13,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:57:13,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:57:13,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:57:13,084 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:57:13,085 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:57:13,086 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-word-subst.wvr.c [2023-11-17 15:57:14,417 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:57:14,634 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:57:14,634 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-subst.wvr.c [2023-11-17 15:57:14,648 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c56a3e1ea/6d97ae19c242435aa9591456bc4a2157/FLAGb9144a4fa [2023-11-17 15:57:14,680 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c56a3e1ea/6d97ae19c242435aa9591456bc4a2157 [2023-11-17 15:57:14,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:57:14,685 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:57:14,689 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:57:14,689 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:57:14,693 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:57:14,694 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:57:14" (1/1) ... [2023-11-17 15:57:14,695 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fd8e5c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:14, skipping insertion in model container [2023-11-17 15:57:14,695 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:57:14" (1/1) ... [2023-11-17 15:57:14,731 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:57:14,923 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/chl-word-subst.wvr.c[3384,3397] [2023-11-17 15:57:14,932 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:57:14,941 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:57:14,966 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/chl-word-subst.wvr.c[3384,3397] [2023-11-17 15:57:14,969 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:57:14,993 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:57:14,995 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:14 WrapperNode [2023-11-17 15:57:14,996 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:57:14,997 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:57:14,997 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:57:14,997 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:57:15,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:14" (1/1) ... [2023-11-17 15:57:15,023 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:14" (1/1) ... [2023-11-17 15:57:15,053 INFO L138 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 187 [2023-11-17 15:57:15,054 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:57:15,054 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:57:15,055 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:57:15,055 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:57:15,068 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:14" (1/1) ... [2023-11-17 15:57:15,068 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:14" (1/1) ... [2023-11-17 15:57:15,072 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:14" (1/1) ... [2023-11-17 15:57:15,073 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:14" (1/1) ... [2023-11-17 15:57:15,085 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:14" (1/1) ... [2023-11-17 15:57:15,090 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:14" (1/1) ... [2023-11-17 15:57:15,092 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:14" (1/1) ... [2023-11-17 15:57:15,094 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:14" (1/1) ... [2023-11-17 15:57:15,098 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:57:15,099 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:57:15,099 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:57:15,099 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:57:15,109 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:14" (1/1) ... [2023-11-17 15:57:15,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:57:15,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:57:15,148 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 15:57:15,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 15:57:15,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:57:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:57:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:57:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 15:57:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 15:57:15,189 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 15:57:15,190 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 15:57:15,190 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 15:57:15,190 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 15:57:15,190 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 15:57:15,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:57:15,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 15:57:15,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:57:15,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:57:15,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:57:15,192 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 15:57:15,333 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:57:15,339 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:57:15,848 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:57:15,862 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:57:15,863 INFO L307 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-17 15:57:15,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:57:15 BoogieIcfgContainer [2023-11-17 15:57:15,864 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:57:15,866 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:57:15,867 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:57:15,870 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:57:15,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:57:14" (1/3) ... [2023-11-17 15:57:15,871 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4217b14f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:57:15, skipping insertion in model container [2023-11-17 15:57:15,871 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:57:14" (2/3) ... [2023-11-17 15:57:15,871 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4217b14f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:57:15, skipping insertion in model container [2023-11-17 15:57:15,871 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:57:15" (3/3) ... [2023-11-17 15:57:15,873 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2023-11-17 15:57:15,888 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:57:15,888 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 15:57:15,888 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:57:15,999 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-17 15:57:16,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 305 places, 324 transitions, 669 flow [2023-11-17 15:57:16,228 INFO L124 PetriNetUnfolderBase]: 29/321 cut-off events. [2023-11-17 15:57:16,228 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 15:57:16,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 321 events. 29/321 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 405 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 253. Up to 3 conditions per place. [2023-11-17 15:57:16,238 INFO L82 GeneralOperation]: Start removeDead. Operand has 305 places, 324 transitions, 669 flow [2023-11-17 15:57:16,244 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 291 places, 310 transitions, 638 flow [2023-11-17 15:57:16,247 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:57:16,259 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 291 places, 310 transitions, 638 flow [2023-11-17 15:57:16,261 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 291 places, 310 transitions, 638 flow [2023-11-17 15:57:16,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 291 places, 310 transitions, 638 flow [2023-11-17 15:57:16,334 INFO L124 PetriNetUnfolderBase]: 29/310 cut-off events. [2023-11-17 15:57:16,334 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 15:57:16,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323 conditions, 310 events. 29/310 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 407 event pairs, 0 based on Foata normal form. 0/281 useless extension candidates. Maximal degree in co-relation 253. Up to 3 conditions per place. [2023-11-17 15:57:16,345 INFO L119 LiptonReduction]: Number of co-enabled transitions 8448 [2023-11-17 15:57:25,413 INFO L134 LiptonReduction]: Checked pairs total: 10590 [2023-11-17 15:57:25,413 INFO L136 LiptonReduction]: Total number of compositions: 334 [2023-11-17 15:57:25,433 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:57:25,439 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;@5ae4c1a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:57:25,440 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 15:57:25,450 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:57:25,451 INFO L124 PetriNetUnfolderBase]: 11/38 cut-off events. [2023-11-17 15:57:25,451 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 15:57:25,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:25,452 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 15:57:25,452 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 15:57:25,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:25,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1884049329, now seen corresponding path program 1 times [2023-11-17 15:57:25,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:25,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966776450] [2023-11-17 15:57:25,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:25,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:25,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:57:25,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:25,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966776450] [2023-11-17 15:57:25,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966776450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:25,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:25,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:57:25,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403819395] [2023-11-17 15:57:25,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:25,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:57:25,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:26,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:57:26,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:57:26,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 658 [2023-11-17 15:57:26,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 304.3333333333333) internal successors, (913), 3 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:26,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:26,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 658 [2023-11-17 15:57:26,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:26,311 INFO L124 PetriNetUnfolderBase]: 1270/1711 cut-off events. [2023-11-17 15:57:26,311 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2023-11-17 15:57:26,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3571 conditions, 1711 events. 1270/1711 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5671 event pairs, 585 based on Foata normal form. 1/1131 useless extension candidates. Maximal degree in co-relation 2914. Up to 1321 conditions per place. [2023-11-17 15:57:26,320 INFO L140 encePairwiseOnDemand]: 655/658 looper letters, 35 selfloop transitions, 0 changer transitions 26/61 dead transitions. [2023-11-17 15:57:26,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 61 transitions, 277 flow [2023-11-17 15:57:26,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:57:26,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:57:26,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 956 transitions. [2023-11-17 15:57:26,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48429584599797365 [2023-11-17 15:57:26,342 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 956 transitions. [2023-11-17 15:57:26,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 956 transitions. [2023-11-17 15:57:26,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:26,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 956 transitions. [2023-11-17 15:57:26,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 318.6666666666667) internal successors, (956), 3 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:26,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 658.0) internal successors, (2632), 4 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:26,365 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 658.0) internal successors, (2632), 4 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:26,366 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 96 flow. Second operand 3 states and 956 transitions. [2023-11-17 15:57:26,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 61 transitions, 277 flow [2023-11-17 15:57:26,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 61 transitions, 255 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-17 15:57:26,376 INFO L231 Difference]: Finished difference. Result has 35 places, 35 transitions, 78 flow [2023-11-17 15:57:26,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=35, PETRI_TRANSITIONS=35} [2023-11-17 15:57:26,382 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -3 predicate places. [2023-11-17 15:57:26,382 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 35 transitions, 78 flow [2023-11-17 15:57:26,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 304.3333333333333) internal successors, (913), 3 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:26,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:26,383 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 15:57:26,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:57:26,384 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 15:57:26,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:26,385 INFO L85 PathProgramCache]: Analyzing trace with hash -216487244, now seen corresponding path program 1 times [2023-11-17 15:57:26,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:26,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787777653] [2023-11-17 15:57:26,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:26,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:27,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:57:27,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:27,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787777653] [2023-11-17 15:57:27,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787777653] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:27,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:27,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:27,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886182739] [2023-11-17 15:57:27,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:27,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:57:27,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:27,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:57:27,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:57:27,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 658 [2023-11-17 15:57:27,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 35 transitions, 78 flow. Second operand has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:27,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:27,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 658 [2023-11-17 15:57:27,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:27,603 INFO L124 PetriNetUnfolderBase]: 742/1039 cut-off events. [2023-11-17 15:57:27,603 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-17 15:57:27,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2116 conditions, 1039 events. 742/1039 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3790 event pairs, 47 based on Foata normal form. 1/719 useless extension candidates. Maximal degree in co-relation 2112. Up to 750 conditions per place. [2023-11-17 15:57:27,609 INFO L140 encePairwiseOnDemand]: 654/658 looper letters, 65 selfloop transitions, 2 changer transitions 10/77 dead transitions. [2023-11-17 15:57:27,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 77 transitions, 327 flow [2023-11-17 15:57:27,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:57:27,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:57:27,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1483 transitions. [2023-11-17 15:57:27,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45075987841945286 [2023-11-17 15:57:27,614 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1483 transitions. [2023-11-17 15:57:27,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1483 transitions. [2023-11-17 15:57:27,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:27,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1483 transitions. [2023-11-17 15:57:27,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 296.6) internal successors, (1483), 5 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:27,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 658.0) internal successors, (3948), 6 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:27,624 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 658.0) internal successors, (3948), 6 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:27,625 INFO L175 Difference]: Start difference. First operand has 35 places, 35 transitions, 78 flow. Second operand 5 states and 1483 transitions. [2023-11-17 15:57:27,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 77 transitions, 327 flow [2023-11-17 15:57:27,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 77 transitions, 323 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-17 15:57:27,628 INFO L231 Difference]: Finished difference. Result has 38 places, 36 transitions, 91 flow [2023-11-17 15:57:27,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=91, PETRI_PLACES=38, PETRI_TRANSITIONS=36} [2023-11-17 15:57:27,629 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 0 predicate places. [2023-11-17 15:57:27,630 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 91 flow [2023-11-17 15:57:27,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:27,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:27,632 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 15:57:27,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:57:27,632 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 15:57:27,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:27,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1254817704, now seen corresponding path program 2 times [2023-11-17 15:57:27,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:27,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105763627] [2023-11-17 15:57:27,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:27,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:28,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:57:28,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:28,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105763627] [2023-11-17 15:57:28,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105763627] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:28,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:28,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 15:57:28,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309909236] [2023-11-17 15:57:28,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:28,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:57:28,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:28,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:57:28,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 15:57:28,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 658 [2023-11-17 15:57:28,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 91 flow. Second operand has 6 states, 6 states have (on average 245.33333333333334) internal successors, (1472), 6 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:28,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:28,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 658 [2023-11-17 15:57:28,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:28,896 INFO L124 PetriNetUnfolderBase]: 807/1167 cut-off events. [2023-11-17 15:57:28,897 INFO L125 PetriNetUnfolderBase]: For 324/324 co-relation queries the response was YES. [2023-11-17 15:57:28,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2583 conditions, 1167 events. 807/1167 cut-off events. For 324/324 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4143 event pairs, 393 based on Foata normal form. 1/932 useless extension candidates. Maximal degree in co-relation 2576. Up to 896 conditions per place. [2023-11-17 15:57:28,902 INFO L140 encePairwiseOnDemand]: 647/658 looper letters, 59 selfloop transitions, 10 changer transitions 10/79 dead transitions. [2023-11-17 15:57:28,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 79 transitions, 357 flow [2023-11-17 15:57:28,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:57:28,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:57:28,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1531 transitions. [2023-11-17 15:57:28,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38779128672745694 [2023-11-17 15:57:28,907 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1531 transitions. [2023-11-17 15:57:28,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1531 transitions. [2023-11-17 15:57:28,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:28,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1531 transitions. [2023-11-17 15:57:28,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 255.16666666666666) internal successors, (1531), 6 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:28,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 658.0) internal successors, (4606), 7 states have internal predecessors, (4606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:28,920 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 658.0) internal successors, (4606), 7 states have internal predecessors, (4606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:28,920 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 91 flow. Second operand 6 states and 1531 transitions. [2023-11-17 15:57:28,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 79 transitions, 357 flow [2023-11-17 15:57:28,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 79 transitions, 348 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-17 15:57:28,922 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 162 flow [2023-11-17 15:57:28,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=162, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2023-11-17 15:57:28,923 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 7 predicate places. [2023-11-17 15:57:28,923 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 162 flow [2023-11-17 15:57:28,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 245.33333333333334) internal successors, (1472), 6 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:28,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:28,924 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 15:57:28,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 15:57:28,925 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 15:57:28,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:28,925 INFO L85 PathProgramCache]: Analyzing trace with hash 833427774, now seen corresponding path program 3 times [2023-11-17 15:57:28,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:28,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565710488] [2023-11-17 15:57:28,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:28,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:28,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:29,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:57:29,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:29,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565710488] [2023-11-17 15:57:29,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565710488] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:29,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:29,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:29,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173236176] [2023-11-17 15:57:29,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:29,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:57:29,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:29,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:57:29,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:57:29,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 658 [2023-11-17 15:57:29,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 162 flow. Second operand has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:29,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:29,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 658 [2023-11-17 15:57:29,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:29,708 INFO L124 PetriNetUnfolderBase]: 887/1299 cut-off events. [2023-11-17 15:57:29,708 INFO L125 PetriNetUnfolderBase]: For 760/760 co-relation queries the response was YES. [2023-11-17 15:57:29,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3121 conditions, 1299 events. 887/1299 cut-off events. For 760/760 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5282 event pairs, 77 based on Foata normal form. 1/1040 useless extension candidates. Maximal degree in co-relation 3111. Up to 904 conditions per place. [2023-11-17 15:57:29,716 INFO L140 encePairwiseOnDemand]: 654/658 looper letters, 73 selfloop transitions, 3 changer transitions 11/87 dead transitions. [2023-11-17 15:57:29,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 87 transitions, 452 flow [2023-11-17 15:57:29,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:57:29,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:57:29,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1485 transitions. [2023-11-17 15:57:29,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4513677811550152 [2023-11-17 15:57:29,721 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1485 transitions. [2023-11-17 15:57:29,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1485 transitions. [2023-11-17 15:57:29,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:29,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1485 transitions. [2023-11-17 15:57:29,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:29,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 658.0) internal successors, (3948), 6 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:29,733 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 658.0) internal successors, (3948), 6 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:29,734 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 162 flow. Second operand 5 states and 1485 transitions. [2023-11-17 15:57:29,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 87 transitions, 452 flow [2023-11-17 15:57:29,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 87 transitions, 444 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-17 15:57:29,738 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 179 flow [2023-11-17 15:57:29,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=179, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2023-11-17 15:57:29,739 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 12 predicate places. [2023-11-17 15:57:29,739 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 179 flow [2023-11-17 15:57:29,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:29,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:29,741 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 15:57:29,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 15:57:29,741 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 15:57:29,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:29,742 INFO L85 PathProgramCache]: Analyzing trace with hash -20081360, now seen corresponding path program 4 times [2023-11-17 15:57:29,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:29,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886521514] [2023-11-17 15:57:29,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:29,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:30,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:57:30,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:30,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886521514] [2023-11-17 15:57:30,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886521514] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:30,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:30,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:30,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109911794] [2023-11-17 15:57:30,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:30,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:57:30,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:30,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:57:30,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:57:30,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 658 [2023-11-17 15:57:30,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:30,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:30,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 658 [2023-11-17 15:57:30,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:30,736 INFO L124 PetriNetUnfolderBase]: 986/1474 cut-off events. [2023-11-17 15:57:30,736 INFO L125 PetriNetUnfolderBase]: For 1723/1723 co-relation queries the response was YES. [2023-11-17 15:57:30,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3684 conditions, 1474 events. 986/1474 cut-off events. For 1723/1723 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5854 event pairs, 494 based on Foata normal form. 1/1181 useless extension candidates. Maximal degree in co-relation 3671. Up to 1062 conditions per place. [2023-11-17 15:57:30,750 INFO L140 encePairwiseOnDemand]: 654/658 looper letters, 69 selfloop transitions, 4 changer transitions 11/84 dead transitions. [2023-11-17 15:57:30,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 84 transitions, 470 flow [2023-11-17 15:57:30,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:57:30,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:57:30,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1480 transitions. [2023-11-17 15:57:30,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44984802431610943 [2023-11-17 15:57:30,755 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1480 transitions. [2023-11-17 15:57:30,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1480 transitions. [2023-11-17 15:57:30,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:30,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1480 transitions. [2023-11-17 15:57:30,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:30,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 658.0) internal successors, (3948), 6 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:30,767 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 658.0) internal successors, (3948), 6 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:30,767 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 179 flow. Second operand 5 states and 1480 transitions. [2023-11-17 15:57:30,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 84 transitions, 470 flow [2023-11-17 15:57:30,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 84 transitions, 454 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-17 15:57:30,774 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 206 flow [2023-11-17 15:57:30,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=206, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2023-11-17 15:57:30,777 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 15 predicate places. [2023-11-17 15:57:30,777 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 206 flow [2023-11-17 15:57:30,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:30,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:30,778 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 15:57:30,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 15:57:30,779 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 15:57:30,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:30,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1587505052, now seen corresponding path program 5 times [2023-11-17 15:57:30,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:30,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282928697] [2023-11-17 15:57:30,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:30,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:31,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:57:31,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:31,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282928697] [2023-11-17 15:57:31,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282928697] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:31,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:31,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:31,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072664297] [2023-11-17 15:57:31,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:31,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:57:31,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:31,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:57:31,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:57:31,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 658 [2023-11-17 15:57:31,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 206 flow. Second operand has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:31,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:31,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 658 [2023-11-17 15:57:31,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:31,882 INFO L124 PetriNetUnfolderBase]: 980/1454 cut-off events. [2023-11-17 15:57:31,883 INFO L125 PetriNetUnfolderBase]: For 2317/2317 co-relation queries the response was YES. [2023-11-17 15:57:31,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3758 conditions, 1454 events. 980/1454 cut-off events. For 2317/2317 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5813 event pairs, 225 based on Foata normal form. 1/1163 useless extension candidates. Maximal degree in co-relation 3744. Up to 695 conditions per place. [2023-11-17 15:57:31,893 INFO L140 encePairwiseOnDemand]: 650/658 looper letters, 86 selfloop transitions, 12 changer transitions 10/108 dead transitions. [2023-11-17 15:57:31,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 108 transitions, 613 flow [2023-11-17 15:57:31,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:57:31,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:57:31,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1784 transitions. [2023-11-17 15:57:31,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4518743667679838 [2023-11-17 15:57:31,899 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1784 transitions. [2023-11-17 15:57:31,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1784 transitions. [2023-11-17 15:57:31,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:31,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1784 transitions. [2023-11-17 15:57:31,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 297.3333333333333) internal successors, (1784), 6 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:31,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 658.0) internal successors, (4606), 7 states have internal predecessors, (4606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:31,953 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 658.0) internal successors, (4606), 7 states have internal predecessors, (4606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:31,954 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 206 flow. Second operand 6 states and 1784 transitions. [2023-11-17 15:57:31,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 108 transitions, 613 flow [2023-11-17 15:57:31,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 108 transitions, 591 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-11-17 15:57:31,962 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 287 flow [2023-11-17 15:57:31,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=287, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2023-11-17 15:57:31,965 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 19 predicate places. [2023-11-17 15:57:31,965 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 287 flow [2023-11-17 15:57:31,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:31,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:31,966 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 15:57:31,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 15:57:31,966 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 15:57:31,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:31,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1493731390, now seen corresponding path program 6 times [2023-11-17 15:57:31,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:31,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110044200] [2023-11-17 15:57:31,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:31,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:32,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:32,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:57:32,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:32,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110044200] [2023-11-17 15:57:32,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110044200] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:32,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:32,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:32,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003913651] [2023-11-17 15:57:32,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:32,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:57:32,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:32,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:57:32,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:57:32,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 658 [2023-11-17 15:57:32,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 287 flow. Second operand has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:32,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:32,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 658 [2023-11-17 15:57:32,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:32,983 INFO L124 PetriNetUnfolderBase]: 967/1429 cut-off events. [2023-11-17 15:57:32,983 INFO L125 PetriNetUnfolderBase]: For 2499/2499 co-relation queries the response was YES. [2023-11-17 15:57:32,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4115 conditions, 1429 events. 967/1429 cut-off events. For 2499/2499 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5477 event pairs, 474 based on Foata normal form. 1/1280 useless extension candidates. Maximal degree in co-relation 4100. Up to 1062 conditions per place. [2023-11-17 15:57:32,994 INFO L140 encePairwiseOnDemand]: 654/658 looper letters, 81 selfloop transitions, 5 changer transitions 10/96 dead transitions. [2023-11-17 15:57:32,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 96 transitions, 594 flow [2023-11-17 15:57:32,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:57:32,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:57:32,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1486 transitions. [2023-11-17 15:57:32,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45167173252279635 [2023-11-17 15:57:32,999 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1486 transitions. [2023-11-17 15:57:33,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1486 transitions. [2023-11-17 15:57:33,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:33,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1486 transitions. [2023-11-17 15:57:33,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:33,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 658.0) internal successors, (3948), 6 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:33,011 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 658.0) internal successors, (3948), 6 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:33,011 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 287 flow. Second operand 5 states and 1486 transitions. [2023-11-17 15:57:33,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 96 transitions, 594 flow [2023-11-17 15:57:33,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 96 transitions, 577 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-11-17 15:57:33,021 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 284 flow [2023-11-17 15:57:33,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=284, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2023-11-17 15:57:33,022 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 21 predicate places. [2023-11-17 15:57:33,022 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 284 flow [2023-11-17 15:57:33,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:33,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:33,023 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 15:57:33,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 15:57:33,023 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 15:57:33,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:33,024 INFO L85 PathProgramCache]: Analyzing trace with hash 430638252, now seen corresponding path program 1 times [2023-11-17 15:57:33,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:33,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605607423] [2023-11-17 15:57:33,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:33,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:33,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:33,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:57:33,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:33,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605607423] [2023-11-17 15:57:33,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605607423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:33,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:33,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:33,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249472367] [2023-11-17 15:57:33,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:33,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:57:33,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:33,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:57:33,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:57:33,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 658 [2023-11-17 15:57:33,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 284 flow. Second operand has 4 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:33,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:33,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 658 [2023-11-17 15:57:33,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:33,399 INFO L124 PetriNetUnfolderBase]: 1253/1864 cut-off events. [2023-11-17 15:57:33,399 INFO L125 PetriNetUnfolderBase]: For 3324/3324 co-relation queries the response was YES. [2023-11-17 15:57:33,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5085 conditions, 1864 events. 1253/1864 cut-off events. For 3324/3324 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 8220 event pairs, 80 based on Foata normal form. 42/1688 useless extension candidates. Maximal degree in co-relation 5069. Up to 1135 conditions per place. [2023-11-17 15:57:33,413 INFO L140 encePairwiseOnDemand]: 654/658 looper letters, 87 selfloop transitions, 6 changer transitions 0/93 dead transitions. [2023-11-17 15:57:33,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 93 transitions, 616 flow [2023-11-17 15:57:33,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:57:33,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:57:33,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1225 transitions. [2023-11-17 15:57:33,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4654255319148936 [2023-11-17 15:57:33,418 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1225 transitions. [2023-11-17 15:57:33,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1225 transitions. [2023-11-17 15:57:33,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:33,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1225 transitions. [2023-11-17 15:57:33,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 306.25) internal successors, (1225), 4 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:33,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 658.0) internal successors, (3290), 5 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:33,438 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 658.0) internal successors, (3290), 5 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:33,439 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 284 flow. Second operand 4 states and 1225 transitions. [2023-11-17 15:57:33,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 93 transitions, 616 flow [2023-11-17 15:57:33,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 93 transitions, 604 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-17 15:57:33,445 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 335 flow [2023-11-17 15:57:33,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=335, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2023-11-17 15:57:33,447 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 22 predicate places. [2023-11-17 15:57:33,447 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 335 flow [2023-11-17 15:57:33,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:33,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:33,448 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 15:57:33,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 15:57:33,449 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:57:33,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:33,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1476036872, now seen corresponding path program 2 times [2023-11-17 15:57:33,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:33,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514971025] [2023-11-17 15:57:33,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:33,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:33,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:57:33,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:33,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514971025] [2023-11-17 15:57:33,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514971025] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:33,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:33,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:33,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327031232] [2023-11-17 15:57:33,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:33,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:57:33,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:33,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:57:33,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:57:33,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 658 [2023-11-17 15:57:33,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 335 flow. Second operand has 4 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:33,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:33,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 658 [2023-11-17 15:57:33,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:33,817 INFO L124 PetriNetUnfolderBase]: 1148/1715 cut-off events. [2023-11-17 15:57:33,817 INFO L125 PetriNetUnfolderBase]: For 2854/2854 co-relation queries the response was YES. [2023-11-17 15:57:33,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4916 conditions, 1715 events. 1148/1715 cut-off events. For 2854/2854 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7331 event pairs, 59 based on Foata normal form. 42/1557 useless extension candidates. Maximal degree in co-relation 4900. Up to 1028 conditions per place. [2023-11-17 15:57:33,831 INFO L140 encePairwiseOnDemand]: 654/658 looper letters, 86 selfloop transitions, 8 changer transitions 0/94 dead transitions. [2023-11-17 15:57:33,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 94 transitions, 664 flow [2023-11-17 15:57:33,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:57:33,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:57:33,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1223 transitions. [2023-11-17 15:57:33,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46466565349544076 [2023-11-17 15:57:33,835 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1223 transitions. [2023-11-17 15:57:33,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1223 transitions. [2023-11-17 15:57:33,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:33,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1223 transitions. [2023-11-17 15:57:33,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 305.75) internal successors, (1223), 4 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:33,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 658.0) internal successors, (3290), 5 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:33,842 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 658.0) internal successors, (3290), 5 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:33,843 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 335 flow. Second operand 4 states and 1223 transitions. [2023-11-17 15:57:33,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 94 transitions, 664 flow [2023-11-17 15:57:33,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 94 transitions, 664 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 15:57:33,852 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 405 flow [2023-11-17 15:57:33,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=405, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2023-11-17 15:57:33,853 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 28 predicate places. [2023-11-17 15:57:33,853 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 405 flow [2023-11-17 15:57:33,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:33,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:33,856 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 15:57:33,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 15:57:33,858 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 15:57:33,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:33,859 INFO L85 PathProgramCache]: Analyzing trace with hash -302618710, now seen corresponding path program 3 times [2023-11-17 15:57:33,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:33,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017245874] [2023-11-17 15:57:33,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:33,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:33,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:57:33,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:33,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017245874] [2023-11-17 15:57:33,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017245874] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:33,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:33,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:33,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120055847] [2023-11-17 15:57:33,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:33,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:57:33,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:33,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:57:33,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:57:33,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 658 [2023-11-17 15:57:33,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 405 flow. Second operand has 4 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:33,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:33,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 658 [2023-11-17 15:57:33,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:34,238 INFO L124 PetriNetUnfolderBase]: 1077/1600 cut-off events. [2023-11-17 15:57:34,238 INFO L125 PetriNetUnfolderBase]: For 3526/3526 co-relation queries the response was YES. [2023-11-17 15:57:34,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5019 conditions, 1600 events. 1077/1600 cut-off events. For 3526/3526 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6630 event pairs, 259 based on Foata normal form. 8/1426 useless extension candidates. Maximal degree in co-relation 5000. Up to 1264 conditions per place. [2023-11-17 15:57:34,251 INFO L140 encePairwiseOnDemand]: 653/658 looper letters, 80 selfloop transitions, 13 changer transitions 1/94 dead transitions. [2023-11-17 15:57:34,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 94 transitions, 704 flow [2023-11-17 15:57:34,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:57:34,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:57:34,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1513 transitions. [2023-11-17 15:57:34,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45987841945288754 [2023-11-17 15:57:34,256 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1513 transitions. [2023-11-17 15:57:34,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1513 transitions. [2023-11-17 15:57:34,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:34,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1513 transitions. [2023-11-17 15:57:34,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 302.6) internal successors, (1513), 5 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:34,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 658.0) internal successors, (3948), 6 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:34,265 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 658.0) internal successors, (3948), 6 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:34,266 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 405 flow. Second operand 5 states and 1513 transitions. [2023-11-17 15:57:34,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 94 transitions, 704 flow [2023-11-17 15:57:34,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 94 transitions, 702 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-17 15:57:34,276 INFO L231 Difference]: Finished difference. Result has 71 places, 62 transitions, 443 flow [2023-11-17 15:57:34,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=443, PETRI_PLACES=71, PETRI_TRANSITIONS=62} [2023-11-17 15:57:34,278 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 33 predicate places. [2023-11-17 15:57:34,278 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 62 transitions, 443 flow [2023-11-17 15:57:34,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:34,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:34,279 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 15:57:34,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 15:57:34,279 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 15:57:34,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:34,280 INFO L85 PathProgramCache]: Analyzing trace with hash -928840825, now seen corresponding path program 1 times [2023-11-17 15:57:34,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:34,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245837146] [2023-11-17 15:57:34,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:34,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:34,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:34,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:57:34,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:34,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245837146] [2023-11-17 15:57:34,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245837146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:34,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:34,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:34,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000539308] [2023-11-17 15:57:34,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:34,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:57:34,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:34,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:57:34,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:57:34,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 658 [2023-11-17 15:57:34,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 62 transitions, 443 flow. Second operand has 4 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:34,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:34,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 658 [2023-11-17 15:57:34,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:34,628 INFO L124 PetriNetUnfolderBase]: 1156/1731 cut-off events. [2023-11-17 15:57:34,628 INFO L125 PetriNetUnfolderBase]: For 4576/4576 co-relation queries the response was YES. [2023-11-17 15:57:34,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5383 conditions, 1731 events. 1156/1731 cut-off events. For 4576/4576 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7489 event pairs, 186 based on Foata normal form. 16/1555 useless extension candidates. Maximal degree in co-relation 5362. Up to 1402 conditions per place. [2023-11-17 15:57:34,650 INFO L140 encePairwiseOnDemand]: 654/658 looper letters, 79 selfloop transitions, 10 changer transitions 0/89 dead transitions. [2023-11-17 15:57:34,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 89 transitions, 718 flow [2023-11-17 15:57:34,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:57:34,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:57:34,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1216 transitions. [2023-11-17 15:57:34,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46200607902735563 [2023-11-17 15:57:34,654 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1216 transitions. [2023-11-17 15:57:34,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1216 transitions. [2023-11-17 15:57:34,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:34,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1216 transitions. [2023-11-17 15:57:34,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 304.0) internal successors, (1216), 4 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:34,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 658.0) internal successors, (3290), 5 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:34,661 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 658.0) internal successors, (3290), 5 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:34,662 INFO L175 Difference]: Start difference. First operand has 71 places, 62 transitions, 443 flow. Second operand 4 states and 1216 transitions. [2023-11-17 15:57:34,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 89 transitions, 718 flow [2023-11-17 15:57:34,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 89 transitions, 681 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-17 15:57:34,674 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 470 flow [2023-11-17 15:57:34,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=470, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2023-11-17 15:57:34,675 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 33 predicate places. [2023-11-17 15:57:34,675 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 470 flow [2023-11-17 15:57:34,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:34,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:34,676 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 15:57:34,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 15:57:34,676 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 15:57:34,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:34,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1248577039, now seen corresponding path program 2 times [2023-11-17 15:57:34,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:34,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329897578] [2023-11-17 15:57:34,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:34,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:34,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:57:34,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:34,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329897578] [2023-11-17 15:57:34,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329897578] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:34,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:34,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:34,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018675984] [2023-11-17 15:57:34,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:34,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:57:34,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:34,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:57:34,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:57:34,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 658 [2023-11-17 15:57:34,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 470 flow. Second operand has 4 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:34,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:34,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 658 [2023-11-17 15:57:34,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:35,072 INFO L124 PetriNetUnfolderBase]: 1120/1673 cut-off events. [2023-11-17 15:57:35,072 INFO L125 PetriNetUnfolderBase]: For 3335/3335 co-relation queries the response was YES. [2023-11-17 15:57:35,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5341 conditions, 1673 events. 1120/1673 cut-off events. For 3335/3335 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 7053 event pairs, 307 based on Foata normal form. 10/1495 useless extension candidates. Maximal degree in co-relation 5322. Up to 1247 conditions per place. [2023-11-17 15:57:35,089 INFO L140 encePairwiseOnDemand]: 653/658 looper letters, 82 selfloop transitions, 13 changer transitions 2/97 dead transitions. [2023-11-17 15:57:35,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 97 transitions, 774 flow [2023-11-17 15:57:35,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:57:35,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:57:35,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1513 transitions. [2023-11-17 15:57:35,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45987841945288754 [2023-11-17 15:57:35,094 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1513 transitions. [2023-11-17 15:57:35,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1513 transitions. [2023-11-17 15:57:35,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:35,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1513 transitions. [2023-11-17 15:57:35,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 302.6) internal successors, (1513), 5 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:35,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 658.0) internal successors, (3948), 6 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:35,103 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 658.0) internal successors, (3948), 6 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:35,103 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 470 flow. Second operand 5 states and 1513 transitions. [2023-11-17 15:57:35,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 97 transitions, 774 flow [2023-11-17 15:57:35,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 97 transitions, 756 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-11-17 15:57:35,113 INFO L231 Difference]: Finished difference. Result has 75 places, 67 transitions, 510 flow [2023-11-17 15:57:35,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=510, PETRI_PLACES=75, PETRI_TRANSITIONS=67} [2023-11-17 15:57:35,114 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 37 predicate places. [2023-11-17 15:57:35,114 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 67 transitions, 510 flow [2023-11-17 15:57:35,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:35,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:35,115 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 15:57:35,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-17 15:57:35,115 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 15:57:35,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:35,115 INFO L85 PathProgramCache]: Analyzing trace with hash -562954357, now seen corresponding path program 3 times [2023-11-17 15:57:35,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:35,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574532700] [2023-11-17 15:57:35,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:35,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:35,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:57:35,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:35,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574532700] [2023-11-17 15:57:35,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574532700] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:35,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:35,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:35,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405096781] [2023-11-17 15:57:35,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:35,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:57:35,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:35,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:57:35,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:57:35,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 658 [2023-11-17 15:57:35,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 67 transitions, 510 flow. Second operand has 4 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:35,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:35,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 658 [2023-11-17 15:57:35,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:35,470 INFO L124 PetriNetUnfolderBase]: 1013/1500 cut-off events. [2023-11-17 15:57:35,471 INFO L125 PetriNetUnfolderBase]: For 3963/3963 co-relation queries the response was YES. [2023-11-17 15:57:35,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4860 conditions, 1500 events. 1013/1500 cut-off events. For 3963/3963 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5885 event pairs, 436 based on Foata normal form. 18/1352 useless extension candidates. Maximal degree in co-relation 4840. Up to 1136 conditions per place. [2023-11-17 15:57:35,481 INFO L140 encePairwiseOnDemand]: 653/658 looper letters, 94 selfloop transitions, 10 changer transitions 4/108 dead transitions. [2023-11-17 15:57:35,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 108 transitions, 828 flow [2023-11-17 15:57:35,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:57:35,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:57:35,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1522 transitions. [2023-11-17 15:57:35,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46261398176291796 [2023-11-17 15:57:35,485 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1522 transitions. [2023-11-17 15:57:35,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1522 transitions. [2023-11-17 15:57:35,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:35,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1522 transitions. [2023-11-17 15:57:35,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 304.4) internal successors, (1522), 5 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:35,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 658.0) internal successors, (3948), 6 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:35,494 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 658.0) internal successors, (3948), 6 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:35,494 INFO L175 Difference]: Start difference. First operand has 75 places, 67 transitions, 510 flow. Second operand 5 states and 1522 transitions. [2023-11-17 15:57:35,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 108 transitions, 828 flow [2023-11-17 15:57:35,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 108 transitions, 814 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-17 15:57:35,504 INFO L231 Difference]: Finished difference. Result has 79 places, 65 transitions, 485 flow [2023-11-17 15:57:35,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=485, PETRI_PLACES=79, PETRI_TRANSITIONS=65} [2023-11-17 15:57:35,505 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 41 predicate places. [2023-11-17 15:57:35,506 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 65 transitions, 485 flow [2023-11-17 15:57:35,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:35,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:35,506 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 15:57:35,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-17 15:57:35,506 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 15:57:35,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:35,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1059245345, now seen corresponding path program 4 times [2023-11-17 15:57:35,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:35,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441653119] [2023-11-17 15:57:35,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:35,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:35,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:57:35,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:35,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441653119] [2023-11-17 15:57:35,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441653119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:35,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:35,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:35,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82276681] [2023-11-17 15:57:35,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:35,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:57:35,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:35,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:57:35,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:57:35,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 658 [2023-11-17 15:57:35,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 65 transitions, 485 flow. Second operand has 4 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:35,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:35,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 658 [2023-11-17 15:57:35,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:35,822 INFO L124 PetriNetUnfolderBase]: 953/1394 cut-off events. [2023-11-17 15:57:35,822 INFO L125 PetriNetUnfolderBase]: For 3999/3999 co-relation queries the response was YES. [2023-11-17 15:57:35,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4494 conditions, 1394 events. 953/1394 cut-off events. For 3999/3999 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5380 event pairs, 198 based on Foata normal form. 16/1254 useless extension candidates. Maximal degree in co-relation 4473. Up to 1219 conditions per place. [2023-11-17 15:57:35,832 INFO L140 encePairwiseOnDemand]: 654/658 looper letters, 70 selfloop transitions, 10 changer transitions 3/83 dead transitions. [2023-11-17 15:57:35,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 83 transitions, 677 flow [2023-11-17 15:57:35,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:57:35,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:57:35,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1213 transitions. [2023-11-17 15:57:35,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46086626139817627 [2023-11-17 15:57:35,836 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1213 transitions. [2023-11-17 15:57:35,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1213 transitions. [2023-11-17 15:57:35,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:35,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1213 transitions. [2023-11-17 15:57:35,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 303.25) internal successors, (1213), 4 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:35,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 658.0) internal successors, (3290), 5 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:35,844 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 658.0) internal successors, (3290), 5 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:35,844 INFO L175 Difference]: Start difference. First operand has 79 places, 65 transitions, 485 flow. Second operand 4 states and 1213 transitions. [2023-11-17 15:57:35,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 83 transitions, 677 flow [2023-11-17 15:57:35,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 83 transitions, 651 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-11-17 15:57:35,852 INFO L231 Difference]: Finished difference. Result has 77 places, 63 transitions, 438 flow [2023-11-17 15:57:35,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=438, PETRI_PLACES=77, PETRI_TRANSITIONS=63} [2023-11-17 15:57:35,853 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 39 predicate places. [2023-11-17 15:57:35,853 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 63 transitions, 438 flow [2023-11-17 15:57:35,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:35,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:35,854 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 15:57:35,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-17 15:57:35,854 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 15:57:35,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:35,855 INFO L85 PathProgramCache]: Analyzing trace with hash -2110664752, now seen corresponding path program 4 times [2023-11-17 15:57:35,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:35,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707737180] [2023-11-17 15:57:35,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:35,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:35,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:57:35,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:35,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707737180] [2023-11-17 15:57:35,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707737180] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:35,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:35,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:35,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065149134] [2023-11-17 15:57:35,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:35,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:57:35,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:35,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:57:35,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:57:35,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 658 [2023-11-17 15:57:35,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 63 transitions, 438 flow. Second operand has 4 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:35,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:35,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 658 [2023-11-17 15:57:35,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:36,199 INFO L124 PetriNetUnfolderBase]: 939/1378 cut-off events. [2023-11-17 15:57:36,200 INFO L125 PetriNetUnfolderBase]: For 2564/2564 co-relation queries the response was YES. [2023-11-17 15:57:36,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4337 conditions, 1378 events. 939/1378 cut-off events. For 2564/2564 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5322 event pairs, 199 based on Foata normal form. 14/1238 useless extension candidates. Maximal degree in co-relation 4318. Up to 1271 conditions per place. [2023-11-17 15:57:36,209 INFO L140 encePairwiseOnDemand]: 653/658 looper letters, 61 selfloop transitions, 6 changer transitions 13/80 dead transitions. [2023-11-17 15:57:36,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 80 transitions, 640 flow [2023-11-17 15:57:36,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:57:36,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:57:36,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1210 transitions. [2023-11-17 15:57:36,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45972644376899696 [2023-11-17 15:57:36,212 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1210 transitions. [2023-11-17 15:57:36,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1210 transitions. [2023-11-17 15:57:36,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:36,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1210 transitions. [2023-11-17 15:57:36,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 302.5) internal successors, (1210), 4 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:36,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 658.0) internal successors, (3290), 5 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:36,219 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 658.0) internal successors, (3290), 5 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:36,220 INFO L175 Difference]: Start difference. First operand has 77 places, 63 transitions, 438 flow. Second operand 4 states and 1210 transitions. [2023-11-17 15:57:36,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 80 transitions, 640 flow [2023-11-17 15:57:36,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 80 transitions, 611 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-11-17 15:57:36,227 INFO L231 Difference]: Finished difference. Result has 77 places, 59 transitions, 373 flow [2023-11-17 15:57:36,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=373, PETRI_PLACES=77, PETRI_TRANSITIONS=59} [2023-11-17 15:57:36,228 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 39 predicate places. [2023-11-17 15:57:36,228 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 59 transitions, 373 flow [2023-11-17 15:57:36,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:36,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:36,229 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 15:57:36,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-17 15:57:36,229 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 15:57:36,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:36,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1294813291, now seen corresponding path program 5 times [2023-11-17 15:57:36,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:36,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961978721] [2023-11-17 15:57:36,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:36,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:36,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:36,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:57:36,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:36,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961978721] [2023-11-17 15:57:36,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961978721] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:36,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:36,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:36,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882180257] [2023-11-17 15:57:36,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:36,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:57:36,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:36,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:57:36,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:57:36,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 658 [2023-11-17 15:57:36,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 59 transitions, 373 flow. Second operand has 4 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:36,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:36,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 658 [2023-11-17 15:57:36,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:36,501 INFO L124 PetriNetUnfolderBase]: 886/1289 cut-off events. [2023-11-17 15:57:36,502 INFO L125 PetriNetUnfolderBase]: For 1842/1842 co-relation queries the response was YES. [2023-11-17 15:57:36,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3996 conditions, 1289 events. 886/1289 cut-off events. For 1842/1842 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4703 event pairs, 487 based on Foata normal form. 4/1145 useless extension candidates. Maximal degree in co-relation 3978. Up to 1275 conditions per place. [2023-11-17 15:57:36,511 INFO L140 encePairwiseOnDemand]: 655/658 looper letters, 56 selfloop transitions, 0 changer transitions 8/64 dead transitions. [2023-11-17 15:57:36,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 64 transitions, 498 flow [2023-11-17 15:57:36,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:57:36,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:57:36,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1195 transitions. [2023-11-17 15:57:36,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540273556231003 [2023-11-17 15:57:36,515 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1195 transitions. [2023-11-17 15:57:36,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1195 transitions. [2023-11-17 15:57:36,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:36,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1195 transitions. [2023-11-17 15:57:36,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 298.75) internal successors, (1195), 4 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:36,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 658.0) internal successors, (3290), 5 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:36,522 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 658.0) internal successors, (3290), 5 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:36,522 INFO L175 Difference]: Start difference. First operand has 77 places, 59 transitions, 373 flow. Second operand 4 states and 1195 transitions. [2023-11-17 15:57:36,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 64 transitions, 498 flow [2023-11-17 15:57:36,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 64 transitions, 473 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-11-17 15:57:36,526 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 308 flow [2023-11-17 15:57:36,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=308, PETRI_PLACES=72, PETRI_TRANSITIONS=56} [2023-11-17 15:57:36,527 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 34 predicate places. [2023-11-17 15:57:36,527 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 308 flow [2023-11-17 15:57:36,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:36,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:36,528 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 15:57:36,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-17 15:57:36,528 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 15:57:36,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:36,528 INFO L85 PathProgramCache]: Analyzing trace with hash -880309952, now seen corresponding path program 5 times [2023-11-17 15:57:36,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:36,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136245844] [2023-11-17 15:57:36,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:36,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:36,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:57:36,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:36,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136245844] [2023-11-17 15:57:36,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136245844] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:36,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:36,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:57:36,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646870690] [2023-11-17 15:57:36,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:36,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:57:36,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:36,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:57:36,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:57:36,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 658 [2023-11-17 15:57:36,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 56 transitions, 308 flow. Second operand has 4 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:36,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:36,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 658 [2023-11-17 15:57:36,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:36,813 INFO L124 PetriNetUnfolderBase]: 806/1157 cut-off events. [2023-11-17 15:57:36,814 INFO L125 PetriNetUnfolderBase]: For 1014/1014 co-relation queries the response was YES. [2023-11-17 15:57:36,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3430 conditions, 1157 events. 806/1157 cut-off events. For 1014/1014 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4038 event pairs, 434 based on Foata normal form. 10/1037 useless extension candidates. Maximal degree in co-relation 3417. Up to 1136 conditions per place. [2023-11-17 15:57:36,821 INFO L140 encePairwiseOnDemand]: 655/658 looper letters, 53 selfloop transitions, 0 changer transitions 10/63 dead transitions. [2023-11-17 15:57:36,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 63 transitions, 439 flow [2023-11-17 15:57:36,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:57:36,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:57:36,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1196 transitions. [2023-11-17 15:57:36,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45440729483282677 [2023-11-17 15:57:36,825 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1196 transitions. [2023-11-17 15:57:36,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1196 transitions. [2023-11-17 15:57:36,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:36,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1196 transitions. [2023-11-17 15:57:36,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:36,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 658.0) internal successors, (3290), 5 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:36,836 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 658.0) internal successors, (3290), 5 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:36,836 INFO L175 Difference]: Start difference. First operand has 72 places, 56 transitions, 308 flow. Second operand 4 states and 1196 transitions. [2023-11-17 15:57:36,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 63 transitions, 439 flow [2023-11-17 15:57:36,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 63 transitions, 423 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-17 15:57:36,839 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 257 flow [2023-11-17 15:57:36,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=257, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2023-11-17 15:57:36,840 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 26 predicate places. [2023-11-17 15:57:36,840 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 257 flow [2023-11-17 15:57:36,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:36,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:36,840 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 15:57:36,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-17 15:57:36,841 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 15:57:36,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:36,841 INFO L85 PathProgramCache]: Analyzing trace with hash 46578361, now seen corresponding path program 1 times [2023-11-17 15:57:36,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:36,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517915265] [2023-11-17 15:57:36,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:36,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:37,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:57:37,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:37,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517915265] [2023-11-17 15:57:37,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517915265] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:37,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:57:37,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 15:57:37,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279646238] [2023-11-17 15:57:37,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:37,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 15:57:37,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:37,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 15:57:37,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-17 15:57:37,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 658 [2023-11-17 15:57:37,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 257 flow. Second operand has 10 states, 10 states have (on average 229.2) internal successors, (2292), 10 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:37,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:37,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 658 [2023-11-17 15:57:37,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:38,160 INFO L124 PetriNetUnfolderBase]: 2279/3278 cut-off events. [2023-11-17 15:57:38,160 INFO L125 PetriNetUnfolderBase]: For 2654/2654 co-relation queries the response was YES. [2023-11-17 15:57:38,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9749 conditions, 3278 events. 2279/3278 cut-off events. For 2654/2654 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 14351 event pairs, 644 based on Foata normal form. 71/2972 useless extension candidates. Maximal degree in co-relation 9737. Up to 698 conditions per place. [2023-11-17 15:57:38,185 INFO L140 encePairwiseOnDemand]: 644/658 looper letters, 181 selfloop transitions, 36 changer transitions 9/226 dead transitions. [2023-11-17 15:57:38,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 226 transitions, 1487 flow [2023-11-17 15:57:38,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 15:57:38,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 15:57:38,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2899 transitions. [2023-11-17 15:57:38,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36714792299898685 [2023-11-17 15:57:38,193 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2899 transitions. [2023-11-17 15:57:38,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2899 transitions. [2023-11-17 15:57:38,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:38,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2899 transitions. [2023-11-17 15:57:38,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 241.58333333333334) internal successors, (2899), 12 states have internal predecessors, (2899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:38,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 658.0) internal successors, (8554), 13 states have internal predecessors, (8554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:38,209 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 658.0) internal successors, (8554), 13 states have internal predecessors, (8554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:38,210 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 257 flow. Second operand 12 states and 2899 transitions. [2023-11-17 15:57:38,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 226 transitions, 1487 flow [2023-11-17 15:57:38,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 226 transitions, 1475 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-17 15:57:38,217 INFO L231 Difference]: Finished difference. Result has 75 places, 83 transitions, 605 flow [2023-11-17 15:57:38,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=605, PETRI_PLACES=75, PETRI_TRANSITIONS=83} [2023-11-17 15:57:38,217 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 37 predicate places. [2023-11-17 15:57:38,217 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 83 transitions, 605 flow [2023-11-17 15:57:38,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 229.2) internal successors, (2292), 10 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:38,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:38,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:57:38,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-17 15:57:38,219 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:57:38,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:38,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1490750650, now seen corresponding path program 1 times [2023-11-17 15:57:38,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:38,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482406158] [2023-11-17 15:57:38,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:38,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:38,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:38,743 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 15:57:38,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:38,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482406158] [2023-11-17 15:57:38,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482406158] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:57:38,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085261355] [2023-11-17 15:57:38,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:38,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:57:38,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:57:38,749 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 15:57:38,768 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 15:57:38,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:38,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-17 15:57:38,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:57:39,377 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 15:57:39,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:57:39,547 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:57:39,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 168 treesize of output 132 [2023-11-17 15:57:41,229 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 15:57:41,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085261355] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 15:57:41,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 15:57:41,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 23 [2023-11-17 15:57:41,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221940346] [2023-11-17 15:57:41,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:41,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 15:57:41,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:41,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 15:57:41,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2023-11-17 15:57:41,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 658 [2023-11-17 15:57:41,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 83 transitions, 605 flow. Second operand has 10 states, 10 states have (on average 225.3) internal successors, (2253), 10 states have internal predecessors, (2253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:41,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:41,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 658 [2023-11-17 15:57:41,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:43,175 INFO L124 PetriNetUnfolderBase]: 4102/5913 cut-off events. [2023-11-17 15:57:43,176 INFO L125 PetriNetUnfolderBase]: For 9395/9395 co-relation queries the response was YES. [2023-11-17 15:57:43,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20373 conditions, 5913 events. 4102/5913 cut-off events. For 9395/9395 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 28881 event pairs, 938 based on Foata normal form. 129/5386 useless extension candidates. Maximal degree in co-relation 20354. Up to 1384 conditions per place. [2023-11-17 15:57:43,221 INFO L140 encePairwiseOnDemand]: 644/658 looper letters, 226 selfloop transitions, 46 changer transitions 17/289 dead transitions. [2023-11-17 15:57:43,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 289 transitions, 2170 flow [2023-11-17 15:57:43,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 15:57:43,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 15:57:43,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3339 transitions. [2023-11-17 15:57:43,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36246200607902734 [2023-11-17 15:57:43,229 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3339 transitions. [2023-11-17 15:57:43,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3339 transitions. [2023-11-17 15:57:43,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:43,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3339 transitions. [2023-11-17 15:57:43,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 238.5) internal successors, (3339), 14 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:43,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 658.0) internal successors, (9870), 15 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:43,249 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 658.0) internal successors, (9870), 15 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:43,249 INFO L175 Difference]: Start difference. First operand has 75 places, 83 transitions, 605 flow. Second operand 14 states and 3339 transitions. [2023-11-17 15:57:43,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 289 transitions, 2170 flow [2023-11-17 15:57:43,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 289 transitions, 2146 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-11-17 15:57:43,285 INFO L231 Difference]: Finished difference. Result has 95 places, 112 transitions, 1029 flow [2023-11-17 15:57:43,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1029, PETRI_PLACES=95, PETRI_TRANSITIONS=112} [2023-11-17 15:57:43,286 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 57 predicate places. [2023-11-17 15:57:43,286 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 112 transitions, 1029 flow [2023-11-17 15:57:43,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 225.3) internal successors, (2253), 10 states have internal predecessors, (2253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:43,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:43,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:57:43,300 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 15:57:43,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:57:43,501 INFO L420 AbstractCegarLoop]: === Iteration 20 === 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 15:57:43,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:43,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1488434029, now seen corresponding path program 1 times [2023-11-17 15:57:43,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:43,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567087321] [2023-11-17 15:57:43,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:43,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:43,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:43,718 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 15:57:43,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:43,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567087321] [2023-11-17 15:57:43,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567087321] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:57:43,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409280475] [2023-11-17 15:57:43,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:43,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:57:43,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:57:43,721 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 15:57:43,740 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 15:57:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:43,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-17 15:57:43,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:57:44,342 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 15:57:44,342 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:57:44,528 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:57:44,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 168 treesize of output 132 [2023-11-17 15:57:45,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:57:45,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409280475] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 15:57:45,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 15:57:45,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 11] total 26 [2023-11-17 15:57:45,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343077063] [2023-11-17 15:57:45,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:45,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 15:57:45,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:45,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 15:57:45,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=562, Unknown=0, NotChecked=0, Total=702 [2023-11-17 15:57:45,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 658 [2023-11-17 15:57:45,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 112 transitions, 1029 flow. Second operand has 10 states, 10 states have (on average 217.3) internal successors, (2173), 10 states have internal predecessors, (2173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:45,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:45,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 658 [2023-11-17 15:57:45,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:48,239 INFO L124 PetriNetUnfolderBase]: 5832/8452 cut-off events. [2023-11-17 15:57:48,239 INFO L125 PetriNetUnfolderBase]: For 30455/30455 co-relation queries the response was YES. [2023-11-17 15:57:48,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34042 conditions, 8452 events. 5832/8452 cut-off events. For 30455/30455 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 45011 event pairs, 650 based on Foata normal form. 1/7583 useless extension candidates. Maximal degree in co-relation 34015. Up to 2253 conditions per place. [2023-11-17 15:57:48,303 INFO L140 encePairwiseOnDemand]: 642/658 looper letters, 289 selfloop transitions, 113 changer transitions 19/421 dead transitions. [2023-11-17 15:57:48,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 421 transitions, 4149 flow [2023-11-17 15:57:48,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 15:57:48,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 15:57:48,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3222 transitions. [2023-11-17 15:57:48,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34976118106817194 [2023-11-17 15:57:48,309 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3222 transitions. [2023-11-17 15:57:48,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3222 transitions. [2023-11-17 15:57:48,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:48,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3222 transitions. [2023-11-17 15:57:48,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 230.14285714285714) internal successors, (3222), 14 states have internal predecessors, (3222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:48,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 658.0) internal successors, (9870), 15 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:48,328 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 658.0) internal successors, (9870), 15 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:48,328 INFO L175 Difference]: Start difference. First operand has 95 places, 112 transitions, 1029 flow. Second operand 14 states and 3222 transitions. [2023-11-17 15:57:48,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 421 transitions, 4149 flow [2023-11-17 15:57:48,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 421 transitions, 3897 flow, removed 50 selfloop flow, removed 4 redundant places. [2023-11-17 15:57:48,626 INFO L231 Difference]: Finished difference. Result has 114 places, 224 transitions, 2518 flow [2023-11-17 15:57:48,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=966, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2518, PETRI_PLACES=114, PETRI_TRANSITIONS=224} [2023-11-17 15:57:48,626 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 76 predicate places. [2023-11-17 15:57:48,626 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 224 transitions, 2518 flow [2023-11-17 15:57:48,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 217.3) internal successors, (2173), 10 states have internal predecessors, (2173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:48,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:48,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:57:48,634 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 15:57:48,833 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,SelfDestructingSolverStorable19 [2023-11-17 15:57:48,834 INFO L420 AbstractCegarLoop]: === Iteration 21 === 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 15:57:48,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:48,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1853951666, now seen corresponding path program 2 times [2023-11-17 15:57:48,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:48,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571627122] [2023-11-17 15:57:48,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:48,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:48,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:49,328 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 15:57:49,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:49,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571627122] [2023-11-17 15:57:49,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571627122] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:57:49,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457117327] [2023-11-17 15:57:49,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:57:49,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:57:49,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:57:49,330 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 15:57:49,350 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 15:57:49,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-17 15:57:49,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:57:49,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-17 15:57:49,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:57:49,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:57:49,899 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:57:49,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457117327] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:49,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:57:49,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 17 [2023-11-17 15:57:49,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141036491] [2023-11-17 15:57:49,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:49,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:57:49,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:49,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:57:49,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2023-11-17 15:57:49,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 658 [2023-11-17 15:57:49,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 224 transitions, 2518 flow. Second operand has 11 states, 11 states have (on average 217.0909090909091) internal successors, (2388), 11 states have internal predecessors, (2388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:49,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:49,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 658 [2023-11-17 15:57:49,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:51,545 INFO L124 PetriNetUnfolderBase]: 6332/9140 cut-off events. [2023-11-17 15:57:51,546 INFO L125 PetriNetUnfolderBase]: For 45188/45188 co-relation queries the response was YES. [2023-11-17 15:57:51,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41922 conditions, 9140 events. 6332/9140 cut-off events. For 45188/45188 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 48840 event pairs, 896 based on Foata normal form. 1/8695 useless extension candidates. Maximal degree in co-relation 41885. Up to 4711 conditions per place. [2023-11-17 15:57:51,620 INFO L140 encePairwiseOnDemand]: 643/658 looper letters, 233 selfloop transitions, 133 changer transitions 15/381 dead transitions. [2023-11-17 15:57:51,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 381 transitions, 4359 flow [2023-11-17 15:57:51,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 15:57:51,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 15:57:51,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3187 transitions. [2023-11-17 15:57:51,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3459617889709075 [2023-11-17 15:57:51,635 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3187 transitions. [2023-11-17 15:57:51,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3187 transitions. [2023-11-17 15:57:51,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:51,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3187 transitions. [2023-11-17 15:57:51,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 227.64285714285714) internal successors, (3187), 14 states have internal predecessors, (3187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:51,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 658.0) internal successors, (9870), 15 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:51,660 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 658.0) internal successors, (9870), 15 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:51,660 INFO L175 Difference]: Start difference. First operand has 114 places, 224 transitions, 2518 flow. Second operand 14 states and 3187 transitions. [2023-11-17 15:57:51,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 381 transitions, 4359 flow [2023-11-17 15:57:52,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 381 transitions, 4300 flow, removed 28 selfloop flow, removed 2 redundant places. [2023-11-17 15:57:52,010 INFO L231 Difference]: Finished difference. Result has 128 places, 262 transitions, 3269 flow [2023-11-17 15:57:52,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=2479, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3269, PETRI_PLACES=128, PETRI_TRANSITIONS=262} [2023-11-17 15:57:52,011 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 90 predicate places. [2023-11-17 15:57:52,011 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 262 transitions, 3269 flow [2023-11-17 15:57:52,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 217.0909090909091) internal successors, (2388), 11 states have internal predecessors, (2388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:52,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:52,011 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, 1, 1] [2023-11-17 15:57:52,017 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 15:57:52,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:57:52,217 INFO L420 AbstractCegarLoop]: === Iteration 22 === 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 15:57:52,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:52,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1669879626, now seen corresponding path program 3 times [2023-11-17 15:57:52,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:52,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628352964] [2023-11-17 15:57:52,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:52,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:52,724 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 15:57:52,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:52,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628352964] [2023-11-17 15:57:52,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628352964] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:57:52,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688475730] [2023-11-17 15:57:52,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:57:52,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:57:52,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:57:52,729 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 15:57:52,748 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 15:57:52,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-17 15:57:52,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:57:52,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-17 15:57:52,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:57:53,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:57:53,169 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:57:53,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688475730] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:53,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:57:53,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 15 [2023-11-17 15:57:53,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115227025] [2023-11-17 15:57:53,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:53,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 15:57:53,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:53,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 15:57:53,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-11-17 15:57:53,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 658 [2023-11-17 15:57:53,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 262 transitions, 3269 flow. Second operand has 9 states, 9 states have (on average 225.55555555555554) internal successors, (2030), 9 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:53,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:53,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 658 [2023-11-17 15:57:53,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:54,733 INFO L124 PetriNetUnfolderBase]: 6314/9123 cut-off events. [2023-11-17 15:57:54,734 INFO L125 PetriNetUnfolderBase]: For 46833/46833 co-relation queries the response was YES. [2023-11-17 15:57:54,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43378 conditions, 9123 events. 6314/9123 cut-off events. For 46833/46833 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 48299 event pairs, 1588 based on Foata normal form. 2/8679 useless extension candidates. Maximal degree in co-relation 43338. Up to 3128 conditions per place. [2023-11-17 15:57:54,816 INFO L140 encePairwiseOnDemand]: 647/658 looper letters, 169 selfloop transitions, 149 changer transitions 26/344 dead transitions. [2023-11-17 15:57:54,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 344 transitions, 4449 flow [2023-11-17 15:57:54,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 15:57:54,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 15:57:54,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2127 transitions. [2023-11-17 15:57:54,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35916919959473154 [2023-11-17 15:57:54,820 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2127 transitions. [2023-11-17 15:57:54,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2127 transitions. [2023-11-17 15:57:54,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:54,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2127 transitions. [2023-11-17 15:57:54,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 236.33333333333334) internal successors, (2127), 9 states have internal predecessors, (2127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:54,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 658.0) internal successors, (6580), 10 states have internal predecessors, (6580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:54,829 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 658.0) internal successors, (6580), 10 states have internal predecessors, (6580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:54,829 INFO L175 Difference]: Start difference. First operand has 128 places, 262 transitions, 3269 flow. Second operand 9 states and 2127 transitions. [2023-11-17 15:57:54,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 344 transitions, 4449 flow [2023-11-17 15:57:55,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 344 transitions, 4200 flow, removed 57 selfloop flow, removed 6 redundant places. [2023-11-17 15:57:55,174 INFO L231 Difference]: Finished difference. Result has 131 places, 256 transitions, 3304 flow [2023-11-17 15:57:55,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=3020, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3304, PETRI_PLACES=131, PETRI_TRANSITIONS=256} [2023-11-17 15:57:55,175 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 93 predicate places. [2023-11-17 15:57:55,175 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 256 transitions, 3304 flow [2023-11-17 15:57:55,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 225.55555555555554) internal successors, (2030), 9 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:55,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:55,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:57:55,181 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 15:57:55,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:57:55,376 INFO L420 AbstractCegarLoop]: === Iteration 23 === 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 15:57:55,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:55,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1435533546, now seen corresponding path program 1 times [2023-11-17 15:57:55,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:55,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672013886] [2023-11-17 15:57:55,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:55,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:55,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:55,666 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 15:57:55,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:55,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672013886] [2023-11-17 15:57:55,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672013886] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:57:55,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911200846] [2023-11-17 15:57:55,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:55,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:57:55,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:57:55,669 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 15:57:55,691 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 15:57:55,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:55,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-17 15:57:55,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:57:56,287 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:57:56,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 136 treesize of output 101 [2023-11-17 15:57:56,350 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 15:57:56,350 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:57:56,506 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:57:56,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 168 treesize of output 132 [2023-11-17 15:57:58,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:57:58,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911200846] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 15:57:58,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 15:57:58,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5, 11] total 25 [2023-11-17 15:57:58,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120656862] [2023-11-17 15:57:58,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:58,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 15:57:58,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:58,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 15:57:58,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2023-11-17 15:57:58,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 658 [2023-11-17 15:57:58,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 256 transitions, 3304 flow. Second operand has 10 states, 10 states have (on average 217.3) internal successors, (2173), 10 states have internal predecessors, (2173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:58,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:58,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 658 [2023-11-17 15:57:58,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:00,751 INFO L124 PetriNetUnfolderBase]: 7169/10360 cut-off events. [2023-11-17 15:58:00,752 INFO L125 PetriNetUnfolderBase]: For 56631/56631 co-relation queries the response was YES. [2023-11-17 15:58:00,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48772 conditions, 10360 events. 7169/10360 cut-off events. For 56631/56631 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 56781 event pairs, 700 based on Foata normal form. 1/9843 useless extension candidates. Maximal degree in co-relation 48732. Up to 2803 conditions per place. [2023-11-17 15:58:00,829 INFO L140 encePairwiseOnDemand]: 642/658 looper letters, 310 selfloop transitions, 173 changer transitions 19/502 dead transitions. [2023-11-17 15:58:00,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 502 transitions, 6159 flow [2023-11-17 15:58:00,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 15:58:00,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 15:58:00,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3460 transitions. [2023-11-17 15:58:00,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3505572441742654 [2023-11-17 15:58:00,835 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3460 transitions. [2023-11-17 15:58:00,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3460 transitions. [2023-11-17 15:58:00,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:00,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3460 transitions. [2023-11-17 15:58:00,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 230.66666666666666) internal successors, (3460), 15 states have internal predecessors, (3460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:00,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 658.0) internal successors, (10528), 16 states have internal predecessors, (10528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:00,848 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 658.0) internal successors, (10528), 16 states have internal predecessors, (10528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:00,849 INFO L175 Difference]: Start difference. First operand has 131 places, 256 transitions, 3304 flow. Second operand 15 states and 3460 transitions. [2023-11-17 15:58:00,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 502 transitions, 6159 flow [2023-11-17 15:58:01,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 502 transitions, 5727 flow, removed 71 selfloop flow, removed 6 redundant places. [2023-11-17 15:58:01,279 INFO L231 Difference]: Finished difference. Result has 145 places, 299 transitions, 4197 flow [2023-11-17 15:58:01,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=3075, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4197, PETRI_PLACES=145, PETRI_TRANSITIONS=299} [2023-11-17 15:58:01,280 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 107 predicate places. [2023-11-17 15:58:01,280 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 299 transitions, 4197 flow [2023-11-17 15:58:01,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 217.3) internal successors, (2173), 10 states have internal predecessors, (2173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:01,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:01,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:01,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:01,484 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,SelfDestructingSolverStorable22 [2023-11-17 15:58:01,485 INFO L420 AbstractCegarLoop]: === Iteration 24 === 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 15:58:01,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:01,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1961840760, now seen corresponding path program 2 times [2023-11-17 15:58:01,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:01,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782203617] [2023-11-17 15:58:01,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:01,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:01,686 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 15:58:01,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:01,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782203617] [2023-11-17 15:58:01,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782203617] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:01,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631559480] [2023-11-17 15:58:01,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:58:01,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:01,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:01,689 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 15:58:01,711 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 15:58:01,820 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-17 15:58:01,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:01,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-17 15:58:01,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:02,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:58:02,123 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:58:02,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631559480] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:58:02,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:58:02,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 15 [2023-11-17 15:58:02,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547294868] [2023-11-17 15:58:02,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:02,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:58:02,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:02,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:58:02,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-11-17 15:58:02,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 658 [2023-11-17 15:58:02,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 299 transitions, 4197 flow. Second operand has 12 states, 12 states have (on average 216.91666666666666) internal successors, (2603), 12 states have internal predecessors, (2603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:02,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:02,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 658 [2023-11-17 15:58:02,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:04,115 INFO L124 PetriNetUnfolderBase]: 9454/13623 cut-off events. [2023-11-17 15:58:04,115 INFO L125 PetriNetUnfolderBase]: For 106372/106372 co-relation queries the response was YES. [2023-11-17 15:58:04,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66794 conditions, 13623 events. 9454/13623 cut-off events. For 106372/106372 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 77334 event pairs, 1564 based on Foata normal form. 187/13108 useless extension candidates. Maximal degree in co-relation 66748. Up to 5476 conditions per place. [2023-11-17 15:58:04,211 INFO L140 encePairwiseOnDemand]: 643/658 looper letters, 311 selfloop transitions, 237 changer transitions 19/567 dead transitions. [2023-11-17 15:58:04,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 567 transitions, 7993 flow [2023-11-17 15:58:04,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 15:58:04,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 15:58:04,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2995 transitions. [2023-11-17 15:58:04,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35012859480944586 [2023-11-17 15:58:04,217 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2995 transitions. [2023-11-17 15:58:04,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2995 transitions. [2023-11-17 15:58:04,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:04,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2995 transitions. [2023-11-17 15:58:04,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 230.3846153846154) internal successors, (2995), 13 states have internal predecessors, (2995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:04,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 658.0) internal successors, (9212), 14 states have internal predecessors, (9212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:04,228 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 658.0) internal successors, (9212), 14 states have internal predecessors, (9212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:04,228 INFO L175 Difference]: Start difference. First operand has 145 places, 299 transitions, 4197 flow. Second operand 13 states and 2995 transitions. [2023-11-17 15:58:04,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 567 transitions, 7993 flow [2023-11-17 15:58:04,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 567 transitions, 7597 flow, removed 103 selfloop flow, removed 7 redundant places. [2023-11-17 15:58:04,977 INFO L231 Difference]: Finished difference. Result has 158 places, 393 transitions, 6022 flow [2023-11-17 15:58:04,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=3925, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6022, PETRI_PLACES=158, PETRI_TRANSITIONS=393} [2023-11-17 15:58:04,977 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 120 predicate places. [2023-11-17 15:58:04,978 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 393 transitions, 6022 flow [2023-11-17 15:58:04,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 216.91666666666666) internal successors, (2603), 12 states have internal predecessors, (2603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:04,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:04,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:04,983 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 15:58:05,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:05,179 INFO L420 AbstractCegarLoop]: === Iteration 25 === 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 15:58:05,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:05,179 INFO L85 PathProgramCache]: Analyzing trace with hash 89750840, now seen corresponding path program 3 times [2023-11-17 15:58:05,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:05,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963700649] [2023-11-17 15:58:05,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:05,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:05,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:05,370 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 15:58:05,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:05,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963700649] [2023-11-17 15:58:05,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963700649] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:05,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024643694] [2023-11-17 15:58:05,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:58:05,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:05,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:05,372 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 15:58:05,394 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 15:58:05,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-17 15:58:05,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:05,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-17 15:58:05,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:05,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:58:05,827 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:58:05,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024643694] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:58:05,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:58:05,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 15 [2023-11-17 15:58:05,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435005828] [2023-11-17 15:58:05,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:05,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:58:05,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:05,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:58:05,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2023-11-17 15:58:05,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 658 [2023-11-17 15:58:05,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 393 transitions, 6022 flow. Second operand has 12 states, 12 states have (on average 216.91666666666666) internal successors, (2603), 12 states have internal predecessors, (2603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:05,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:05,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 658 [2023-11-17 15:58:05,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:08,067 INFO L124 PetriNetUnfolderBase]: 9443/13665 cut-off events. [2023-11-17 15:58:08,068 INFO L125 PetriNetUnfolderBase]: For 121204/121204 co-relation queries the response was YES. [2023-11-17 15:58:08,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72793 conditions, 13665 events. 9443/13665 cut-off events. For 121204/121204 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 78126 event pairs, 1494 based on Foata normal form. 3/12958 useless extension candidates. Maximal degree in co-relation 72739. Up to 5598 conditions per place. [2023-11-17 15:58:08,192 INFO L140 encePairwiseOnDemand]: 644/658 looper letters, 304 selfloop transitions, 254 changer transitions 8/566 dead transitions. [2023-11-17 15:58:08,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 566 transitions, 8530 flow [2023-11-17 15:58:08,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 15:58:08,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 15:58:08,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3425 transitions. [2023-11-17 15:58:08,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34701114488348533 [2023-11-17 15:58:08,196 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3425 transitions. [2023-11-17 15:58:08,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3425 transitions. [2023-11-17 15:58:08,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:08,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3425 transitions. [2023-11-17 15:58:08,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 228.33333333333334) internal successors, (3425), 15 states have internal predecessors, (3425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:08,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 658.0) internal successors, (10528), 16 states have internal predecessors, (10528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:08,209 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 658.0) internal successors, (10528), 16 states have internal predecessors, (10528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:08,209 INFO L175 Difference]: Start difference. First operand has 158 places, 393 transitions, 6022 flow. Second operand 15 states and 3425 transitions. [2023-11-17 15:58:08,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 566 transitions, 8530 flow [2023-11-17 15:58:09,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 566 transitions, 8387 flow, removed 70 selfloop flow, removed 1 redundant places. [2023-11-17 15:58:09,668 INFO L231 Difference]: Finished difference. Result has 174 places, 410 transitions, 6720 flow [2023-11-17 15:58:09,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=5895, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=6720, PETRI_PLACES=174, PETRI_TRANSITIONS=410} [2023-11-17 15:58:09,669 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 136 predicate places. [2023-11-17 15:58:09,669 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 410 transitions, 6720 flow [2023-11-17 15:58:09,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 216.91666666666666) internal successors, (2603), 12 states have internal predecessors, (2603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:09,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:09,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:09,675 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 15:58:09,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:09,871 INFO L420 AbstractCegarLoop]: === Iteration 26 === 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 15:58:09,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:09,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1765727873, now seen corresponding path program 2 times [2023-11-17 15:58:09,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:09,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36080429] [2023-11-17 15:58:09,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:09,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:10,082 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 15:58:10,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:10,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36080429] [2023-11-17 15:58:10,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36080429] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:10,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887649464] [2023-11-17 15:58:10,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:58:10,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:10,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:10,084 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:10,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-17 15:58:10,208 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-17 15:58:10,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:10,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-17 15:58:10,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:10,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:58:10,577 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:58:10,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887649464] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:58:10,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:58:10,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 16 [2023-11-17 15:58:10,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063920436] [2023-11-17 15:58:10,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:10,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:58:10,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:10,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:58:10,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-17 15:58:10,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 658 [2023-11-17 15:58:10,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 410 transitions, 6720 flow. Second operand has 12 states, 12 states have (on average 216.91666666666666) internal successors, (2603), 12 states have internal predecessors, (2603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:10,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:10,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 658 [2023-11-17 15:58:10,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:13,257 INFO L124 PetriNetUnfolderBase]: 10505/15109 cut-off events. [2023-11-17 15:58:13,257 INFO L125 PetriNetUnfolderBase]: For 148653/148653 co-relation queries the response was YES. [2023-11-17 15:58:13,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83228 conditions, 15109 events. 10505/15109 cut-off events. For 148653/148653 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 86567 event pairs, 1931 based on Foata normal form. 7/14330 useless extension candidates. Maximal degree in co-relation 83170. Up to 5922 conditions per place. [2023-11-17 15:58:13,368 INFO L140 encePairwiseOnDemand]: 643/658 looper letters, 283 selfloop transitions, 270 changer transitions 20/573 dead transitions. [2023-11-17 15:58:13,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 573 transitions, 9412 flow [2023-11-17 15:58:13,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 15:58:13,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 15:58:13,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2956 transitions. [2023-11-17 15:58:13,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3455693242927286 [2023-11-17 15:58:13,372 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2956 transitions. [2023-11-17 15:58:13,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2956 transitions. [2023-11-17 15:58:13,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:13,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2956 transitions. [2023-11-17 15:58:13,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 227.3846153846154) internal successors, (2956), 13 states have internal predecessors, (2956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:13,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 658.0) internal successors, (9212), 14 states have internal predecessors, (9212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:13,383 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 658.0) internal successors, (9212), 14 states have internal predecessors, (9212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:13,383 INFO L175 Difference]: Start difference. First operand has 174 places, 410 transitions, 6720 flow. Second operand 13 states and 2956 transitions. [2023-11-17 15:58:13,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 573 transitions, 9412 flow [2023-11-17 15:58:14,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 573 transitions, 9066 flow, removed 14 selfloop flow, removed 5 redundant places. [2023-11-17 15:58:14,553 INFO L231 Difference]: Finished difference. Result has 186 places, 444 transitions, 7553 flow [2023-11-17 15:58:14,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=6387, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7553, PETRI_PLACES=186, PETRI_TRANSITIONS=444} [2023-11-17 15:58:14,554 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 148 predicate places. [2023-11-17 15:58:14,554 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 444 transitions, 7553 flow [2023-11-17 15:58:14,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 216.91666666666666) internal successors, (2603), 12 states have internal predecessors, (2603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:14,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:14,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:14,559 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-17 15:58:14,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-17 15:58:14,756 INFO L420 AbstractCegarLoop]: === Iteration 27 === 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 15:58:14,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:14,756 INFO L85 PathProgramCache]: Analyzing trace with hash -868209887, now seen corresponding path program 3 times [2023-11-17 15:58:14,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:14,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850038638] [2023-11-17 15:58:14,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:14,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:14,950 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 15:58:14,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:14,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850038638] [2023-11-17 15:58:14,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850038638] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:14,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81827909] [2023-11-17 15:58:14,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:58:14,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:14,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:14,953 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:14,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-17 15:58:15,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-17 15:58:15,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:15,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-17 15:58:15,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:15,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:58:15,496 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:58:15,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81827909] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:58:15,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:58:15,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 16 [2023-11-17 15:58:15,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137085677] [2023-11-17 15:58:15,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:15,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:58:15,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:15,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:58:15,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-11-17 15:58:15,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 658 [2023-11-17 15:58:15,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 444 transitions, 7553 flow. Second operand has 12 states, 12 states have (on average 216.91666666666666) internal successors, (2603), 12 states have internal predecessors, (2603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:15,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:15,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 658 [2023-11-17 15:58:15,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:18,149 INFO L124 PetriNetUnfolderBase]: 10441/15033 cut-off events. [2023-11-17 15:58:18,150 INFO L125 PetriNetUnfolderBase]: For 161455/161455 co-relation queries the response was YES. [2023-11-17 15:58:18,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84118 conditions, 15033 events. 10441/15033 cut-off events. For 161455/161455 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 86246 event pairs, 1929 based on Foata normal form. 17/14264 useless extension candidates. Maximal degree in co-relation 84055. Up to 5836 conditions per place. [2023-11-17 15:58:18,277 INFO L140 encePairwiseOnDemand]: 643/658 looper letters, 286 selfloop transitions, 272 changer transitions 10/568 dead transitions. [2023-11-17 15:58:18,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 568 transitions, 9637 flow [2023-11-17 15:58:18,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 15:58:18,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 15:58:18,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2738 transitions. [2023-11-17 15:58:18,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346757852077001 [2023-11-17 15:58:18,281 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2738 transitions. [2023-11-17 15:58:18,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2738 transitions. [2023-11-17 15:58:18,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:18,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2738 transitions. [2023-11-17 15:58:18,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 228.16666666666666) internal successors, (2738), 12 states have internal predecessors, (2738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:18,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 658.0) internal successors, (8554), 13 states have internal predecessors, (8554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:18,292 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 658.0) internal successors, (8554), 13 states have internal predecessors, (8554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:18,292 INFO L175 Difference]: Start difference. First operand has 186 places, 444 transitions, 7553 flow. Second operand 12 states and 2738 transitions. [2023-11-17 15:58:18,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 568 transitions, 9637 flow [2023-11-17 15:58:19,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 568 transitions, 9207 flow, removed 37 selfloop flow, removed 7 redundant places. [2023-11-17 15:58:19,538 INFO L231 Difference]: Finished difference. Result has 191 places, 444 transitions, 7714 flow [2023-11-17 15:58:19,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=7093, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=270, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7714, PETRI_PLACES=191, PETRI_TRANSITIONS=444} [2023-11-17 15:58:19,539 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 153 predicate places. [2023-11-17 15:58:19,539 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 444 transitions, 7714 flow [2023-11-17 15:58:19,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 216.91666666666666) internal successors, (2603), 12 states have internal predecessors, (2603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:19,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:19,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:19,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-17 15:58:19,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-17 15:58:19,747 INFO L420 AbstractCegarLoop]: === Iteration 28 === 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 15:58:19,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:19,748 INFO L85 PathProgramCache]: Analyzing trace with hash -11780139, now seen corresponding path program 4 times [2023-11-17 15:58:19,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:19,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654437220] [2023-11-17 15:58:19,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:19,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:19,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:19,979 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 15:58:19,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:19,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654437220] [2023-11-17 15:58:19,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654437220] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:19,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16508677] [2023-11-17 15:58:19,980 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:58:19,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:19,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:19,985 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:20,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-17 15:58:20,121 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:58:20,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:20,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-17 15:58:20,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:20,543 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:58:20,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 136 treesize of output 101 [2023-11-17 15:58:20,582 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 15:58:20,582 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:20,714 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:58:20,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 168 treesize of output 132 [2023-11-17 15:58:21,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:58:21,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16508677] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:21,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 15:58:21,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6, 10] total 23 [2023-11-17 15:58:21,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128242716] [2023-11-17 15:58:21,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:21,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 15:58:21,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:21,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 15:58:21,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2023-11-17 15:58:21,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 658 [2023-11-17 15:58:21,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 444 transitions, 7714 flow. Second operand has 8 states, 8 states have (on average 248.875) internal successors, (1991), 8 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:21,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:21,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 658 [2023-11-17 15:58:21,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:25,795 INFO L124 PetriNetUnfolderBase]: 14473/20410 cut-off events. [2023-11-17 15:58:25,796 INFO L125 PetriNetUnfolderBase]: For 250721/250721 co-relation queries the response was YES. [2023-11-17 15:58:25,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115604 conditions, 20410 events. 14473/20410 cut-off events. For 250721/250721 co-relation queries the response was YES. Maximal size of possible extension queue 882. Compared 117143 event pairs, 981 based on Foata normal form. 3/19379 useless extension candidates. Maximal degree in co-relation 115543. Up to 9358 conditions per place. [2023-11-17 15:58:25,985 INFO L140 encePairwiseOnDemand]: 647/658 looper letters, 379 selfloop transitions, 362 changer transitions 36/777 dead transitions. [2023-11-17 15:58:25,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 777 transitions, 13772 flow [2023-11-17 15:58:25,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 15:58:25,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 15:58:25,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2861 transitions. [2023-11-17 15:58:25,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39527493782812934 [2023-11-17 15:58:25,989 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2861 transitions. [2023-11-17 15:58:25,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2861 transitions. [2023-11-17 15:58:25,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:25,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2861 transitions. [2023-11-17 15:58:25,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 260.09090909090907) internal successors, (2861), 11 states have internal predecessors, (2861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:25,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 658.0) internal successors, (7896), 12 states have internal predecessors, (7896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:25,998 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 658.0) internal successors, (7896), 12 states have internal predecessors, (7896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:25,998 INFO L175 Difference]: Start difference. First operand has 191 places, 444 transitions, 7714 flow. Second operand 11 states and 2861 transitions. [2023-11-17 15:58:25,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 777 transitions, 13772 flow [2023-11-17 15:58:28,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 777 transitions, 12862 flow, removed 10 selfloop flow, removed 10 redundant places. [2023-11-17 15:58:28,252 INFO L231 Difference]: Finished difference. Result has 197 places, 607 transitions, 10856 flow [2023-11-17 15:58:28,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=7181, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10856, PETRI_PLACES=197, PETRI_TRANSITIONS=607} [2023-11-17 15:58:28,253 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 159 predicate places. [2023-11-17 15:58:28,253 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 607 transitions, 10856 flow [2023-11-17 15:58:28,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 248.875) internal successors, (1991), 8 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:28,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:28,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:28,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:28,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-17 15:58:28,455 INFO L420 AbstractCegarLoop]: === Iteration 29 === 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 15:58:28,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:28,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1010691520, now seen corresponding path program 4 times [2023-11-17 15:58:28,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:28,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115818982] [2023-11-17 15:58:28,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:28,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:28,617 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 15:58:28,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:28,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115818982] [2023-11-17 15:58:28,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115818982] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:28,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597294658] [2023-11-17 15:58:28,618 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:58:28,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:28,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:28,619 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:28,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-17 15:58:28,761 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:58:28,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:28,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-17 15:58:28,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:29,091 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:58:29,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 133 treesize of output 98 [2023-11-17 15:58:29,184 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 15:58:29,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:29,531 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:58:29,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 168 treesize of output 132 [2023-11-17 15:58:30,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:58:30,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597294658] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:30,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 15:58:30,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5, 11] total 25 [2023-11-17 15:58:30,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019159075] [2023-11-17 15:58:30,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:30,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 15:58:30,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:30,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 15:58:30,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2023-11-17 15:58:30,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 658 [2023-11-17 15:58:30,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 607 transitions, 10856 flow. Second operand has 10 states, 10 states have (on average 217.3) internal successors, (2173), 10 states have internal predecessors, (2173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:30,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:30,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 658 [2023-11-17 15:58:30,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:34,941 INFO L124 PetriNetUnfolderBase]: 15037/21288 cut-off events. [2023-11-17 15:58:34,941 INFO L125 PetriNetUnfolderBase]: For 291579/291579 co-relation queries the response was YES. [2023-11-17 15:58:35,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128889 conditions, 21288 events. 15037/21288 cut-off events. For 291579/291579 co-relation queries the response was YES. Maximal size of possible extension queue 928. Compared 124181 event pairs, 1447 based on Foata normal form. 6/21294 useless extension candidates. Maximal degree in co-relation 128823. Up to 8504 conditions per place. [2023-11-17 15:58:35,130 INFO L140 encePairwiseOnDemand]: 642/658 looper letters, 486 selfloop transitions, 346 changer transitions 24/856 dead transitions. [2023-11-17 15:58:35,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 856 transitions, 15135 flow [2023-11-17 15:58:35,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 15:58:35,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 15:58:35,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3450 transitions. [2023-11-17 15:58:35,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3495440729483283 [2023-11-17 15:58:35,133 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3450 transitions. [2023-11-17 15:58:35,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3450 transitions. [2023-11-17 15:58:35,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:35,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3450 transitions. [2023-11-17 15:58:35,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 230.0) internal successors, (3450), 15 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:35,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 658.0) internal successors, (10528), 16 states have internal predecessors, (10528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:35,144 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 658.0) internal successors, (10528), 16 states have internal predecessors, (10528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:35,144 INFO L175 Difference]: Start difference. First operand has 197 places, 607 transitions, 10856 flow. Second operand 15 states and 3450 transitions. [2023-11-17 15:58:35,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 856 transitions, 15135 flow [2023-11-17 15:58:38,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 856 transitions, 14853 flow, removed 86 selfloop flow, removed 3 redundant places. [2023-11-17 15:58:38,111 INFO L231 Difference]: Finished difference. Result has 213 places, 654 transitions, 12621 flow [2023-11-17 15:58:38,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=10651, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=304, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=12621, PETRI_PLACES=213, PETRI_TRANSITIONS=654} [2023-11-17 15:58:38,112 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 175 predicate places. [2023-11-17 15:58:38,112 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 654 transitions, 12621 flow [2023-11-17 15:58:38,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 217.3) internal successors, (2173), 10 states have internal predecessors, (2173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:38,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:38,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:38,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:38,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-17 15:58:38,318 INFO L420 AbstractCegarLoop]: === Iteration 30 === 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 15:58:38,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:38,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1094662945, now seen corresponding path program 5 times [2023-11-17 15:58:38,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:38,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882597044] [2023-11-17 15:58:38,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:38,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:38,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:38,484 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 15:58:38,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:38,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882597044] [2023-11-17 15:58:38,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882597044] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:38,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374950088] [2023-11-17 15:58:38,485 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:58:38,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:38,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:38,489 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:38,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-17 15:58:38,627 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:58:38,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:38,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-17 15:58:38,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:38,932 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 15:58:38,932 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:58:39,224 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:58:39,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 168 treesize of output 132 [2023-11-17 15:58:39,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:58:39,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374950088] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:39,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 15:58:39,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 11] total 26 [2023-11-17 15:58:39,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138335781] [2023-11-17 15:58:39,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:39,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 15:58:39,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:39,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 15:58:39,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=568, Unknown=0, NotChecked=0, Total=702 [2023-11-17 15:58:39,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 658 [2023-11-17 15:58:39,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 654 transitions, 12621 flow. Second operand has 10 states, 10 states have (on average 217.3) internal successors, (2173), 10 states have internal predecessors, (2173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:39,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:39,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 658 [2023-11-17 15:58:39,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:44,633 INFO L124 PetriNetUnfolderBase]: 15150/21620 cut-off events. [2023-11-17 15:58:44,634 INFO L125 PetriNetUnfolderBase]: For 345558/345558 co-relation queries the response was YES. [2023-11-17 15:58:44,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136304 conditions, 21620 events. 15150/21620 cut-off events. For 345558/345558 co-relation queries the response was YES. Maximal size of possible extension queue 953. Compared 128426 event pairs, 1289 based on Foata normal form. 2/21622 useless extension candidates. Maximal degree in co-relation 136233. Up to 7634 conditions per place. [2023-11-17 15:58:44,839 INFO L140 encePairwiseOnDemand]: 642/658 looper letters, 503 selfloop transitions, 335 changer transitions 18/856 dead transitions. [2023-11-17 15:58:44,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 856 transitions, 16144 flow [2023-11-17 15:58:44,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 15:58:44,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 15:58:44,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3445 transitions. [2023-11-17 15:58:44,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34903748733535966 [2023-11-17 15:58:44,843 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3445 transitions. [2023-11-17 15:58:44,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3445 transitions. [2023-11-17 15:58:44,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:44,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3445 transitions. [2023-11-17 15:58:44,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 229.66666666666666) internal successors, (3445), 15 states have internal predecessors, (3445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:44,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 658.0) internal successors, (10528), 16 states have internal predecessors, (10528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:44,854 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 658.0) internal successors, (10528), 16 states have internal predecessors, (10528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:44,854 INFO L175 Difference]: Start difference. First operand has 213 places, 654 transitions, 12621 flow. Second operand 15 states and 3445 transitions. [2023-11-17 15:58:44,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 856 transitions, 16144 flow [2023-11-17 15:58:49,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 856 transitions, 15592 flow, removed 70 selfloop flow, removed 7 redundant places. [2023-11-17 15:58:49,418 INFO L231 Difference]: Finished difference. Result has 223 places, 659 transitions, 12997 flow [2023-11-17 15:58:49,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=12087, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=328, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=12997, PETRI_PLACES=223, PETRI_TRANSITIONS=659} [2023-11-17 15:58:49,419 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 185 predicate places. [2023-11-17 15:58:49,419 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 659 transitions, 12997 flow [2023-11-17 15:58:49,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 217.3) internal successors, (2173), 10 states have internal predecessors, (2173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:49,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:49,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:49,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:49,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:49,626 INFO L420 AbstractCegarLoop]: === Iteration 31 === 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 15:58:49,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:49,626 INFO L85 PathProgramCache]: Analyzing trace with hash 773380409, now seen corresponding path program 6 times [2023-11-17 15:58:49,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:49,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088778725] [2023-11-17 15:58:49,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:49,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:49,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:49,810 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 15:58:49,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:49,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088778725] [2023-11-17 15:58:49,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088778725] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:49,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663471297] [2023-11-17 15:58:49,811 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 15:58:49,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:49,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:49,812 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:49,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-17 15:58:49,958 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-17 15:58:49,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:49,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-17 15:58:49,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:50,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:58:50,287 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:58:50,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663471297] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:58:50,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:58:50,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 16 [2023-11-17 15:58:50,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619836344] [2023-11-17 15:58:50,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:58:50,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 15:58:50,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:58:50,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 15:58:50,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-11-17 15:58:50,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 658 [2023-11-17 15:58:50,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 659 transitions, 12997 flow. Second operand has 12 states, 12 states have (on average 216.91666666666666) internal successors, (2603), 12 states have internal predecessors, (2603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:50,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:58:50,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 658 [2023-11-17 15:58:50,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:58:54,557 INFO L124 PetriNetUnfolderBase]: 14865/21228 cut-off events. [2023-11-17 15:58:54,557 INFO L125 PetriNetUnfolderBase]: For 363599/363599 co-relation queries the response was YES. [2023-11-17 15:58:54,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135244 conditions, 21228 events. 14865/21228 cut-off events. For 363599/363599 co-relation queries the response was YES. Maximal size of possible extension queue 925. Compared 125550 event pairs, 2441 based on Foata normal form. 59/21287 useless extension candidates. Maximal degree in co-relation 135170. Up to 8992 conditions per place. [2023-11-17 15:58:54,767 INFO L140 encePairwiseOnDemand]: 643/658 looper letters, 337 selfloop transitions, 415 changer transitions 20/772 dead transitions. [2023-11-17 15:58:54,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 772 transitions, 15413 flow [2023-11-17 15:58:54,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 15:58:54,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 15:58:54,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2955 transitions. [2023-11-17 15:58:54,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.345452419920505 [2023-11-17 15:58:54,772 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2955 transitions. [2023-11-17 15:58:54,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2955 transitions. [2023-11-17 15:58:54,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:58:54,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2955 transitions. [2023-11-17 15:58:54,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 227.30769230769232) internal successors, (2955), 13 states have internal predecessors, (2955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:54,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 658.0) internal successors, (9212), 14 states have internal predecessors, (9212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:54,782 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 658.0) internal successors, (9212), 14 states have internal predecessors, (9212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:54,782 INFO L175 Difference]: Start difference. First operand has 223 places, 659 transitions, 12997 flow. Second operand 13 states and 2955 transitions. [2023-11-17 15:58:54,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 772 transitions, 15413 flow [2023-11-17 15:58:58,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 772 transitions, 14866 flow, removed 40 selfloop flow, removed 10 redundant places. [2023-11-17 15:58:58,964 INFO L231 Difference]: Finished difference. Result has 230 places, 656 transitions, 13297 flow [2023-11-17 15:58:58,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=12296, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=410, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=13297, PETRI_PLACES=230, PETRI_TRANSITIONS=656} [2023-11-17 15:58:58,965 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 192 predicate places. [2023-11-17 15:58:58,965 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 656 transitions, 13297 flow [2023-11-17 15:58:58,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 216.91666666666666) internal successors, (2603), 12 states have internal predecessors, (2603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:58:58,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:58:58,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:58:58,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-17 15:58:59,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-17 15:58:59,167 INFO L420 AbstractCegarLoop]: === Iteration 32 === 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 15:58:59,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:58:59,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1484400602, now seen corresponding path program 5 times [2023-11-17 15:58:59,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:58:59,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081374492] [2023-11-17 15:58:59,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:58:59,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:58:59,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:58:59,330 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 15:58:59,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:58:59,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081374492] [2023-11-17 15:58:59,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081374492] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:58:59,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340529045] [2023-11-17 15:58:59,331 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:58:59,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:58:59,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:59,333 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:58:59,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-17 15:58:59,471 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:58:59,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:58:59,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-17 15:58:59,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:58:59,790 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:58:59,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 134 treesize of output 99 [2023-11-17 15:58:59,868 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 15:58:59,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:00,072 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:59:00,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 168 treesize of output 132 [2023-11-17 15:59:00,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:59:00,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340529045] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:00,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 15:59:00,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5, 11] total 25 [2023-11-17 15:59:00,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103560586] [2023-11-17 15:59:00,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:59:00,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 15:59:00,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:00,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 15:59:00,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=503, Unknown=0, NotChecked=0, Total=650 [2023-11-17 15:59:00,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 658 [2023-11-17 15:59:00,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 656 transitions, 13297 flow. Second operand has 10 states, 10 states have (on average 217.3) internal successors, (2173), 10 states have internal predecessors, (2173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:00,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:00,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 658 [2023-11-17 15:59:00,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:06,155 INFO L124 PetriNetUnfolderBase]: 15038/21513 cut-off events. [2023-11-17 15:59:06,155 INFO L125 PetriNetUnfolderBase]: For 381941/381941 co-relation queries the response was YES. [2023-11-17 15:59:06,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140890 conditions, 21513 events. 15038/21513 cut-off events. For 381941/381941 co-relation queries the response was YES. Maximal size of possible extension queue 942. Compared 128521 event pairs, 1261 based on Foata normal form. 1/21514 useless extension candidates. Maximal degree in co-relation 140812. Up to 6780 conditions per place. [2023-11-17 15:59:06,452 INFO L140 encePairwiseOnDemand]: 641/658 looper letters, 477 selfloop transitions, 383 changer transitions 20/880 dead transitions. [2023-11-17 15:59:06,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 880 transitions, 17200 flow [2023-11-17 15:59:06,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-17 15:59:06,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-17 15:59:06,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4096 transitions. [2023-11-17 15:59:06,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3458291117865586 [2023-11-17 15:59:06,456 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4096 transitions. [2023-11-17 15:59:06,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4096 transitions. [2023-11-17 15:59:06,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:06,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4096 transitions. [2023-11-17 15:59:06,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 227.55555555555554) internal successors, (4096), 18 states have internal predecessors, (4096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:06,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 658.0) internal successors, (12502), 19 states have internal predecessors, (12502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:06,468 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 658.0) internal successors, (12502), 19 states have internal predecessors, (12502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:06,469 INFO L175 Difference]: Start difference. First operand has 230 places, 656 transitions, 13297 flow. Second operand 18 states and 4096 transitions. [2023-11-17 15:59:06,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 880 transitions, 17200 flow [2023-11-17 15:59:11,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 880 transitions, 16555 flow, removed 19 selfloop flow, removed 8 redundant places. [2023-11-17 15:59:11,316 INFO L231 Difference]: Finished difference. Result has 244 places, 680 transitions, 14158 flow [2023-11-17 15:59:11,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=12695, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=363, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=14158, PETRI_PLACES=244, PETRI_TRANSITIONS=680} [2023-11-17 15:59:11,317 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 206 predicate places. [2023-11-17 15:59:11,317 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 680 transitions, 14158 flow [2023-11-17 15:59:11,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 217.3) internal successors, (2173), 10 states have internal predecessors, (2173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:11,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:11,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:11,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:11,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:11,518 INFO L420 AbstractCegarLoop]: === Iteration 33 === 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 15:59:11,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:11,519 INFO L85 PathProgramCache]: Analyzing trace with hash 752997750, now seen corresponding path program 4 times [2023-11-17 15:59:11,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:11,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543357620] [2023-11-17 15:59:11,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:11,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:11,920 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 15:59:11,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:11,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543357620] [2023-11-17 15:59:11,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543357620] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:11,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194427272] [2023-11-17 15:59:11,921 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:59:11,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:11,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:11,922 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:11,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-17 15:59:12,090 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:59:12,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:12,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-17 15:59:12,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:12,342 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 15:59:12,342 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:12,508 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:59:12,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 168 treesize of output 132 [2023-11-17 15:59:13,207 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 15:59:13,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194427272] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:13,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 15:59:13,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 23 [2023-11-17 15:59:13,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986278795] [2023-11-17 15:59:13,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:59:13,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 15:59:13,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:13,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 15:59:13,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2023-11-17 15:59:13,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 658 [2023-11-17 15:59:13,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 680 transitions, 14158 flow. Second operand has 10 states, 10 states have (on average 225.3) internal successors, (2253), 10 states have internal predecessors, (2253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:13,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:13,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 658 [2023-11-17 15:59:13,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:18,405 INFO L124 PetriNetUnfolderBase]: 15112/21633 cut-off events. [2023-11-17 15:59:18,406 INFO L125 PetriNetUnfolderBase]: For 444535/444535 co-relation queries the response was YES. [2023-11-17 15:59:18,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143629 conditions, 21633 events. 15112/21633 cut-off events. For 444535/444535 co-relation queries the response was YES. Maximal size of possible extension queue 969. Compared 128912 event pairs, 3837 based on Foata normal form. 5/21638 useless extension candidates. Maximal degree in co-relation 143547. Up to 8022 conditions per place. [2023-11-17 15:59:18,663 INFO L140 encePairwiseOnDemand]: 645/658 looper letters, 453 selfloop transitions, 402 changer transitions 24/879 dead transitions. [2023-11-17 15:59:18,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 879 transitions, 17904 flow [2023-11-17 15:59:18,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 15:59:18,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 15:59:18,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3334 transitions. [2023-11-17 15:59:18,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36191923577941815 [2023-11-17 15:59:18,666 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3334 transitions. [2023-11-17 15:59:18,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3334 transitions. [2023-11-17 15:59:18,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:18,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3334 transitions. [2023-11-17 15:59:18,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 238.14285714285714) internal successors, (3334), 14 states have internal predecessors, (3334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:18,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 658.0) internal successors, (9870), 15 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:18,674 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 658.0) internal successors, (9870), 15 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:18,674 INFO L175 Difference]: Start difference. First operand has 244 places, 680 transitions, 14158 flow. Second operand 14 states and 3334 transitions. [2023-11-17 15:59:18,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 879 transitions, 17904 flow [2023-11-17 15:59:23,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 879 transitions, 17477 flow, removed 49 selfloop flow, removed 8 redundant places. [2023-11-17 15:59:23,481 INFO L231 Difference]: Finished difference. Result has 250 places, 684 transitions, 14684 flow [2023-11-17 15:59:23,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=13773, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=680, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=398, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=14684, PETRI_PLACES=250, PETRI_TRANSITIONS=684} [2023-11-17 15:59:23,482 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 212 predicate places. [2023-11-17 15:59:23,482 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 684 transitions, 14684 flow [2023-11-17 15:59:23,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 225.3) internal successors, (2253), 10 states have internal predecessors, (2253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:23,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:23,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:23,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-17 15:59:23,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:23,684 INFO L420 AbstractCegarLoop]: === Iteration 34 === 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 15:59:23,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:23,684 INFO L85 PathProgramCache]: Analyzing trace with hash -532413576, now seen corresponding path program 6 times [2023-11-17 15:59:23,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:23,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143944884] [2023-11-17 15:59:23,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:23,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:23,845 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 15:59:23,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:23,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143944884] [2023-11-17 15:59:23,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143944884] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:23,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044349395] [2023-11-17 15:59:23,846 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 15:59:23,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:23,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:23,849 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:23,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-17 15:59:23,999 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-17 15:59:23,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:24,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-17 15:59:24,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:24,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:59:24,276 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:59:24,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044349395] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:59:24,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:59:24,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5] total 14 [2023-11-17 15:59:24,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982766426] [2023-11-17 15:59:24,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:59:24,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:59:24,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:24,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:59:24,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-17 15:59:24,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 658 [2023-11-17 15:59:24,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 684 transitions, 14684 flow. Second operand has 11 states, 11 states have (on average 217.0909090909091) internal successors, (2388), 11 states have internal predecessors, (2388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:24,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:24,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 658 [2023-11-17 15:59:24,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:29,274 INFO L124 PetriNetUnfolderBase]: 14860/21436 cut-off events. [2023-11-17 15:59:29,275 INFO L125 PetriNetUnfolderBase]: For 454009/454009 co-relation queries the response was YES. [2023-11-17 15:59:29,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143677 conditions, 21436 events. 14860/21436 cut-off events. For 454009/454009 co-relation queries the response was YES. Maximal size of possible extension queue 983. Compared 130290 event pairs, 2377 based on Foata normal form. 284/21720 useless extension candidates. Maximal degree in co-relation 143594. Up to 10502 conditions per place. [2023-11-17 15:59:29,514 INFO L140 encePairwiseOnDemand]: 643/658 looper letters, 470 selfloop transitions, 413 changer transitions 30/913 dead transitions. [2023-11-17 15:59:29,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 913 transitions, 18561 flow [2023-11-17 15:59:29,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-17 15:59:29,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-17 15:59:29,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4135 transitions. [2023-11-17 15:59:29,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3491219182708544 [2023-11-17 15:59:29,522 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4135 transitions. [2023-11-17 15:59:29,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4135 transitions. [2023-11-17 15:59:29,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:29,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4135 transitions. [2023-11-17 15:59:29,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 229.72222222222223) internal successors, (4135), 18 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:29,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 658.0) internal successors, (12502), 19 states have internal predecessors, (12502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:29,535 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 658.0) internal successors, (12502), 19 states have internal predecessors, (12502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:29,535 INFO L175 Difference]: Start difference. First operand has 250 places, 684 transitions, 14684 flow. Second operand 18 states and 4135 transitions. [2023-11-17 15:59:29,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 913 transitions, 18561 flow [2023-11-17 15:59:34,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 913 transitions, 17870 flow, removed 22 selfloop flow, removed 8 redundant places. [2023-11-17 15:59:34,357 INFO L231 Difference]: Finished difference. Result has 265 places, 700 transitions, 15395 flow [2023-11-17 15:59:34,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=13937, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=382, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=15395, PETRI_PLACES=265, PETRI_TRANSITIONS=700} [2023-11-17 15:59:34,359 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 227 predicate places. [2023-11-17 15:59:34,359 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 700 transitions, 15395 flow [2023-11-17 15:59:34,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 217.0909090909091) internal successors, (2388), 11 states have internal predecessors, (2388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:34,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:34,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:34,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:34,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-17 15:59:34,566 INFO L420 AbstractCegarLoop]: === Iteration 35 === 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 15:59:34,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:34,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1650870851, now seen corresponding path program 7 times [2023-11-17 15:59:34,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:34,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886145491] [2023-11-17 15:59:34,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:34,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:34,728 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 15:59:34,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:34,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886145491] [2023-11-17 15:59:34,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886145491] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:34,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215956905] [2023-11-17 15:59:34,728 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 15:59:34,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:34,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:34,731 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:34,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-17 15:59:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:34,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-17 15:59:34,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:35,180 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 15:59:35,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:35,291 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:59:35,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 168 treesize of output 132 [2023-11-17 15:59:35,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:59:35,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215956905] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:35,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 15:59:35,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 11] total 26 [2023-11-17 15:59:35,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576096813] [2023-11-17 15:59:35,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:59:35,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 15:59:35,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:35,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 15:59:35,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2023-11-17 15:59:35,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 658 [2023-11-17 15:59:35,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 700 transitions, 15395 flow. Second operand has 10 states, 10 states have (on average 217.3) internal successors, (2173), 10 states have internal predecessors, (2173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:35,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:35,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 658 [2023-11-17 15:59:35,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:41,442 INFO L124 PetriNetUnfolderBase]: 14842/21454 cut-off events. [2023-11-17 15:59:41,443 INFO L125 PetriNetUnfolderBase]: For 529382/529382 co-relation queries the response was YES. [2023-11-17 15:59:41,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154102 conditions, 21454 events. 14842/21454 cut-off events. For 529382/529382 co-relation queries the response was YES. Maximal size of possible extension queue 973. Compared 131011 event pairs, 1363 based on Foata normal form. 1/21455 useless extension candidates. Maximal degree in co-relation 154013. Up to 6880 conditions per place. [2023-11-17 15:59:41,658 INFO L140 encePairwiseOnDemand]: 643/658 looper letters, 479 selfloop transitions, 381 changer transitions 16/876 dead transitions. [2023-11-17 15:59:41,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 876 transitions, 18750 flow [2023-11-17 15:59:41,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 15:59:41,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 15:59:41,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3217 transitions. [2023-11-17 15:59:41,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34921841076856275 [2023-11-17 15:59:41,661 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3217 transitions. [2023-11-17 15:59:41,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3217 transitions. [2023-11-17 15:59:41,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:41,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3217 transitions. [2023-11-17 15:59:41,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 229.78571428571428) internal successors, (3217), 14 states have internal predecessors, (3217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:41,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 658.0) internal successors, (9870), 15 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:41,667 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 658.0) internal successors, (9870), 15 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:41,667 INFO L175 Difference]: Start difference. First operand has 265 places, 700 transitions, 15395 flow. Second operand 14 states and 3217 transitions. [2023-11-17 15:59:41,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 876 transitions, 18750 flow [2023-11-17 15:59:48,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 876 transitions, 17875 flow, removed 87 selfloop flow, removed 6 redundant places. [2023-11-17 15:59:48,279 INFO L231 Difference]: Finished difference. Result has 276 places, 701 transitions, 15363 flow [2023-11-17 15:59:48,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=14544, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=700, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=380, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=15363, PETRI_PLACES=276, PETRI_TRANSITIONS=701} [2023-11-17 15:59:48,281 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 238 predicate places. [2023-11-17 15:59:48,281 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 701 transitions, 15363 flow [2023-11-17 15:59:48,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 217.3) internal successors, (2173), 10 states have internal predecessors, (2173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:48,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:48,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:48,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:48,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:48,487 INFO L420 AbstractCegarLoop]: === Iteration 36 === 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 15:59:48,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:48,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1700215796, now seen corresponding path program 7 times [2023-11-17 15:59:48,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:48,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413161266] [2023-11-17 15:59:48,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:48,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:48,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:48,651 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 15:59:48,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:48,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413161266] [2023-11-17 15:59:48,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413161266] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:48,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099518074] [2023-11-17 15:59:48,652 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 15:59:48,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:48,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:48,653 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:48,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-17 15:59:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:48,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-17 15:59:48,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:49,061 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:59:49,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 95 [2023-11-17 15:59:49,157 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 15:59:49,158 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:49,426 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:59:49,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 168 treesize of output 132 [2023-11-17 15:59:50,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:59:50,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099518074] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:50,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 15:59:50,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5, 11] total 25 [2023-11-17 15:59:50,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118326519] [2023-11-17 15:59:50,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:59:50,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 15:59:50,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:50,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 15:59:50,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2023-11-17 15:59:50,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 658 [2023-11-17 15:59:50,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 701 transitions, 15363 flow. Second operand has 10 states, 10 states have (on average 217.3) internal successors, (2173), 10 states have internal predecessors, (2173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:50,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:50,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 658 [2023-11-17 15:59:50,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:56,689 INFO L124 PetriNetUnfolderBase]: 16333/23543 cut-off events. [2023-11-17 15:59:56,689 INFO L125 PetriNetUnfolderBase]: For 599125/599125 co-relation queries the response was YES. [2023-11-17 15:59:56,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166903 conditions, 23543 events. 16333/23543 cut-off events. For 599125/599125 co-relation queries the response was YES. Maximal size of possible extension queue 1087. Compared 145015 event pairs, 1001 based on Foata normal form. 1/23544 useless extension candidates. Maximal degree in co-relation 166810. Up to 6520 conditions per place. [2023-11-17 15:59:57,002 INFO L140 encePairwiseOnDemand]: 641/658 looper letters, 505 selfloop transitions, 500 changer transitions 6/1011 dead transitions. [2023-11-17 15:59:57,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 1011 transitions, 21120 flow [2023-11-17 15:59:57,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-17 15:59:57,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-17 15:59:57,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4361 transitions. [2023-11-17 15:59:57,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34882418812989924 [2023-11-17 15:59:57,008 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 4361 transitions. [2023-11-17 15:59:57,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 4361 transitions. [2023-11-17 15:59:57,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:57,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 4361 transitions. [2023-11-17 15:59:57,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 229.52631578947367) internal successors, (4361), 19 states have internal predecessors, (4361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:57,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 658.0) internal successors, (13160), 20 states have internal predecessors, (13160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:57,021 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 658.0) internal successors, (13160), 20 states have internal predecessors, (13160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:57,021 INFO L175 Difference]: Start difference. First operand has 276 places, 701 transitions, 15363 flow. Second operand 19 states and 4361 transitions. [2023-11-17 15:59:57,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 1011 transitions, 21120 flow [2023-11-17 16:00:03,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 1011 transitions, 20212 flow, removed 3 selfloop flow, removed 12 redundant places. [2023-11-17 16:00:03,933 INFO L231 Difference]: Finished difference. Result has 288 places, 792 transitions, 17896 flow [2023-11-17 16:00:03,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=14588, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=418, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=17896, PETRI_PLACES=288, PETRI_TRANSITIONS=792} [2023-11-17 16:00:03,935 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 250 predicate places. [2023-11-17 16:00:03,935 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 792 transitions, 17896 flow [2023-11-17 16:00:03,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 217.3) internal successors, (2173), 10 states have internal predecessors, (2173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:03,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:00:03,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:00:03,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-17 16:00:04,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:00:04,141 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:00:04,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:00:04,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1182786118, now seen corresponding path program 8 times [2023-11-17 16:00:04,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:00:04,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882531277] [2023-11-17 16:00:04,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:00:04,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:00:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:04,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:04,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:00:04,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882531277] [2023-11-17 16:00:04,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882531277] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:00:04,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813929634] [2023-11-17 16:00:04,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:00:04,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:00:04,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:00:04,309 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:00:04,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-17 16:00:04,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-17 16:00:04,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:00:04,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-17 16:00:04,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:00:04,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:00:04,707 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 16:00:04,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813929634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:00:04,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 16:00:04,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 15 [2023-11-17 16:00:04,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745935766] [2023-11-17 16:00:04,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:00:04,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 16:00:04,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:00:04,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 16:00:04,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2023-11-17 16:00:04,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 658 [2023-11-17 16:00:04,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 792 transitions, 17896 flow. Second operand has 12 states, 12 states have (on average 216.91666666666666) internal successors, (2603), 12 states have internal predecessors, (2603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:04,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:00:04,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 658 [2023-11-17 16:00:04,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:00:10,810 INFO L124 PetriNetUnfolderBase]: 16323/23547 cut-off events. [2023-11-17 16:00:10,810 INFO L125 PetriNetUnfolderBase]: For 689502/689502 co-relation queries the response was YES. [2023-11-17 16:00:11,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175319 conditions, 23547 events. 16323/23547 cut-off events. For 689502/689502 co-relation queries the response was YES. Maximal size of possible extension queue 1108. Compared 145150 event pairs, 2549 based on Foata normal form. 2/23549 useless extension candidates. Maximal degree in co-relation 175220. Up to 12079 conditions per place. [2023-11-17 16:00:11,129 INFO L140 encePairwiseOnDemand]: 644/658 looper letters, 493 selfloop transitions, 458 changer transitions 15/966 dead transitions. [2023-11-17 16:00:11,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 966 transitions, 21433 flow [2023-11-17 16:00:11,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-17 16:00:11,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-17 16:00:11,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3878 transitions. [2023-11-17 16:00:11,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34668335419274093 [2023-11-17 16:00:11,133 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3878 transitions. [2023-11-17 16:00:11,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3878 transitions. [2023-11-17 16:00:11,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:00:11,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3878 transitions. [2023-11-17 16:00:11,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 228.11764705882354) internal successors, (3878), 17 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:11,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 658.0) internal successors, (11844), 18 states have internal predecessors, (11844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:11,141 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 658.0) internal successors, (11844), 18 states have internal predecessors, (11844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:11,141 INFO L175 Difference]: Start difference. First operand has 288 places, 792 transitions, 17896 flow. Second operand 17 states and 3878 transitions. [2023-11-17 16:00:11,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 966 transitions, 21433 flow [2023-11-17 16:00:19,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 966 transitions, 21056 flow, removed 90 selfloop flow, removed 7 redundant places. [2023-11-17 16:00:19,748 INFO L231 Difference]: Finished difference. Result has 298 places, 790 transitions, 18468 flow [2023-11-17 16:00:19,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=17564, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=792, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=458, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=18468, PETRI_PLACES=298, PETRI_TRANSITIONS=790} [2023-11-17 16:00:19,749 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 260 predicate places. [2023-11-17 16:00:19,750 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 790 transitions, 18468 flow [2023-11-17 16:00:19,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 216.91666666666666) internal successors, (2603), 12 states have internal predecessors, (2603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:19,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:00:19,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:00:19,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-17 16:00:19,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:00:19,957 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:00:19,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:00:19,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1426869419, now seen corresponding path program 8 times [2023-11-17 16:00:19,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:00:19,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13033743] [2023-11-17 16:00:19,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:00:19,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:00:19,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:20,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:20,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:00:20,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13033743] [2023-11-17 16:00:20,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13033743] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:00:20,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182103903] [2023-11-17 16:00:20,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:00:20,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:00:20,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:00:20,121 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:00:20,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-17 16:00:20,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-17 16:00:20,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:00:20,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-17 16:00:20,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:00:20,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:00:20,536 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 16:00:20,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182103903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:00:20,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 16:00:20,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 16 [2023-11-17 16:00:20,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749634174] [2023-11-17 16:00:20,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:00:20,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 16:00:20,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:00:20,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 16:00:20,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-17 16:00:20,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 658 [2023-11-17 16:00:20,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 790 transitions, 18468 flow. Second operand has 12 states, 12 states have (on average 216.91666666666666) internal successors, (2603), 12 states have internal predecessors, (2603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:20,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:00:20,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 658 [2023-11-17 16:00:20,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:00:26,404 INFO L124 PetriNetUnfolderBase]: 16364/23605 cut-off events. [2023-11-17 16:00:26,404 INFO L125 PetriNetUnfolderBase]: For 721143/721143 co-relation queries the response was YES. [2023-11-17 16:00:26,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179083 conditions, 23605 events. 16364/23605 cut-off events. For 721143/721143 co-relation queries the response was YES. Maximal size of possible extension queue 1089. Compared 145123 event pairs, 2583 based on Foata normal form. 1/23606 useless extension candidates. Maximal degree in co-relation 178983. Up to 10490 conditions per place. [2023-11-17 16:00:26,883 INFO L140 encePairwiseOnDemand]: 644/658 looper letters, 409 selfloop transitions, 506 changer transitions 18/933 dead transitions. [2023-11-17 16:00:26,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 933 transitions, 21656 flow [2023-11-17 16:00:26,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 16:00:26,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 16:00:26,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3414 transitions. [2023-11-17 16:00:26,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3458966565349544 [2023-11-17 16:00:26,886 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3414 transitions. [2023-11-17 16:00:26,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3414 transitions. [2023-11-17 16:00:26,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:00:26,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3414 transitions. [2023-11-17 16:00:26,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 227.6) internal successors, (3414), 15 states have internal predecessors, (3414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:26,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 658.0) internal successors, (10528), 16 states have internal predecessors, (10528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:26,892 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 658.0) internal successors, (10528), 16 states have internal predecessors, (10528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:26,892 INFO L175 Difference]: Start difference. First operand has 298 places, 790 transitions, 18468 flow. Second operand 15 states and 3414 transitions. [2023-11-17 16:00:26,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 933 transitions, 21656 flow [2023-11-17 16:00:34,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 933 transitions, 20710 flow, removed 19 selfloop flow, removed 14 redundant places. [2023-11-17 16:00:34,905 INFO L231 Difference]: Finished difference. Result has 302 places, 798 transitions, 18773 flow [2023-11-17 16:00:34,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=17526, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=790, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=498, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=18773, PETRI_PLACES=302, PETRI_TRANSITIONS=798} [2023-11-17 16:00:34,906 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 264 predicate places. [2023-11-17 16:00:34,906 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 798 transitions, 18773 flow [2023-11-17 16:00:34,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 216.91666666666666) internal successors, (2603), 12 states have internal predecessors, (2603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:34,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:00:34,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:00:34,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-17 16:00:35,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-17 16:00:35,107 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:00:35,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:00:35,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1764119660, now seen corresponding path program 9 times [2023-11-17 16:00:35,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:00:35,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285076563] [2023-11-17 16:00:35,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:00:35,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:00:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:35,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:35,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:00:35,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285076563] [2023-11-17 16:00:35,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285076563] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:00:35,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332969866] [2023-11-17 16:00:35,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:00:35,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:00:35,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:00:35,252 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:00:35,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-17 16:00:35,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-17 16:00:35,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:00:35,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-17 16:00:35,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:00:35,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:00:35,731 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 16:00:35,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332969866] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:00:35,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 16:00:35,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 15 [2023-11-17 16:00:35,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071610294] [2023-11-17 16:00:35,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:00:35,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 16:00:35,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:00:35,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 16:00:35,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-11-17 16:00:35,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 658 [2023-11-17 16:00:35,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 798 transitions, 18773 flow. Second operand has 12 states, 12 states have (on average 216.91666666666666) internal successors, (2603), 12 states have internal predecessors, (2603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:35,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:00:35,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 658 [2023-11-17 16:00:35,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:00:42,082 INFO L124 PetriNetUnfolderBase]: 16714/24175 cut-off events. [2023-11-17 16:00:42,082 INFO L125 PetriNetUnfolderBase]: For 727993/727993 co-relation queries the response was YES. [2023-11-17 16:00:42,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182798 conditions, 24175 events. 16714/24175 cut-off events. For 727993/727993 co-relation queries the response was YES. Maximal size of possible extension queue 1136. Compared 150090 event pairs, 2381 based on Foata normal form. 3/24178 useless extension candidates. Maximal degree in co-relation 182695. Up to 11195 conditions per place. [2023-11-17 16:00:42,544 INFO L140 encePairwiseOnDemand]: 644/658 looper letters, 505 selfloop transitions, 486 changer transitions 27/1018 dead transitions. [2023-11-17 16:00:42,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 1018 transitions, 22974 flow [2023-11-17 16:00:42,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-17 16:00:42,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-17 16:00:42,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4127 transitions. [2023-11-17 16:00:42,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34844647078689633 [2023-11-17 16:00:42,549 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4127 transitions. [2023-11-17 16:00:42,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4127 transitions. [2023-11-17 16:00:42,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:00:42,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4127 transitions. [2023-11-17 16:00:42,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 229.27777777777777) internal successors, (4127), 18 states have internal predecessors, (4127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:42,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 658.0) internal successors, (12502), 19 states have internal predecessors, (12502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:42,558 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 658.0) internal successors, (12502), 19 states have internal predecessors, (12502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:42,558 INFO L175 Difference]: Start difference. First operand has 302 places, 798 transitions, 18773 flow. Second operand 18 states and 4127 transitions. [2023-11-17 16:00:42,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 1018 transitions, 22974 flow [2023-11-17 16:00:51,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 1018 transitions, 21906 flow, removed 31 selfloop flow, removed 11 redundant places. [2023-11-17 16:00:51,080 INFO L231 Difference]: Finished difference. Result has 308 places, 803 transitions, 18937 flow [2023-11-17 16:00:51,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=17717, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=798, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=471, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=18937, PETRI_PLACES=308, PETRI_TRANSITIONS=803} [2023-11-17 16:00:51,082 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 270 predicate places. [2023-11-17 16:00:51,082 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 803 transitions, 18937 flow [2023-11-17 16:00:51,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 216.91666666666666) internal successors, (2603), 12 states have internal predecessors, (2603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:51,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:00:51,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:00:51,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-17 16:00:51,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-17 16:00:51,283 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:00:51,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:00:51,283 INFO L85 PathProgramCache]: Analyzing trace with hash 170135328, now seen corresponding path program 5 times [2023-11-17 16:00:51,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:00:51,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220148911] [2023-11-17 16:00:51,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:00:51,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:00:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:51,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:51,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:00:51,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220148911] [2023-11-17 16:00:51,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220148911] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:00:51,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464804794] [2023-11-17 16:00:51,652 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:00:51,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:00:51,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:00:51,653 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:00:51,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-17 16:00:51,811 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:00:51,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:00:51,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-17 16:00:51,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:00:52,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:52,136 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:00:52,238 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:00:52,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 168 treesize of output 132 [2023-11-17 16:00:53,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:53,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464804794] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 16:00:53,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 16:00:53,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 23 [2023-11-17 16:00:53,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78641114] [2023-11-17 16:00:53,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:00:53,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 16:00:53,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:00:53,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 16:00:53,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2023-11-17 16:00:53,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 658 [2023-11-17 16:00:53,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 803 transitions, 18937 flow. Second operand has 10 states, 10 states have (on average 225.3) internal successors, (2253), 10 states have internal predecessors, (2253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:53,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:00:53,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 658 [2023-11-17 16:00:53,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:00:59,390 INFO L124 PetriNetUnfolderBase]: 15870/23188 cut-off events. [2023-11-17 16:00:59,390 INFO L125 PetriNetUnfolderBase]: For 739504/739504 co-relation queries the response was YES. [2023-11-17 16:00:59,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169614 conditions, 23188 events. 15870/23188 cut-off events. For 739504/739504 co-relation queries the response was YES. Maximal size of possible extension queue 1126. Compared 145506 event pairs, 4465 based on Foata normal form. 565/23753 useless extension candidates. Maximal degree in co-relation 169511. Up to 8746 conditions per place. [2023-11-17 16:00:59,643 INFO L140 encePairwiseOnDemand]: 644/658 looper letters, 481 selfloop transitions, 451 changer transitions 68/1000 dead transitions. [2023-11-17 16:00:59,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 1000 transitions, 23287 flow [2023-11-17 16:00:59,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 16:00:59,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 16:00:59,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3099 transitions. [2023-11-17 16:00:59,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36228664952069206 [2023-11-17 16:00:59,646 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3099 transitions. [2023-11-17 16:00:59,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3099 transitions. [2023-11-17 16:00:59,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:00:59,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3099 transitions. [2023-11-17 16:00:59,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 238.3846153846154) internal successors, (3099), 13 states have internal predecessors, (3099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:59,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 658.0) internal successors, (9212), 14 states have internal predecessors, (9212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:59,652 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 658.0) internal successors, (9212), 14 states have internal predecessors, (9212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:59,652 INFO L175 Difference]: Start difference. First operand has 308 places, 803 transitions, 18937 flow. Second operand 13 states and 3099 transitions. [2023-11-17 16:00:59,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 1000 transitions, 23287 flow [2023-11-17 16:01:07,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 1000 transitions, 22443 flow, removed 173 selfloop flow, removed 12 redundant places. [2023-11-17 16:01:07,150 INFO L231 Difference]: Finished difference. Result has 314 places, 794 transitions, 19261 flow [2023-11-17 16:01:07,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=17917, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=792, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=423, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=19261, PETRI_PLACES=314, PETRI_TRANSITIONS=794} [2023-11-17 16:01:07,151 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 276 predicate places. [2023-11-17 16:01:07,151 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 794 transitions, 19261 flow [2023-11-17 16:01:07,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 225.3) internal successors, (2253), 10 states have internal predecessors, (2253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:07,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:01:07,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:01:07,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-17 16:01:07,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-17 16:01:07,352 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:01:07,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:01:07,353 INFO L85 PathProgramCache]: Analyzing trace with hash -2108522178, now seen corresponding path program 6 times [2023-11-17 16:01:07,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:01:07,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238738336] [2023-11-17 16:01:07,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:01:07,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:01:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:01:07,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:01:07,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:01:07,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238738336] [2023-11-17 16:01:07,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238738336] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:01:07,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632400730] [2023-11-17 16:01:07,792 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:01:07,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:01:07,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:01:07,793 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:01:07,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-17 16:01:07,924 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-17 16:01:07,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:01:07,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-17 16:01:07,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:01:08,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:01:08,136 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 16:01:08,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632400730] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:01:08,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 16:01:08,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 16 [2023-11-17 16:01:08,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387108706] [2023-11-17 16:01:08,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:01:08,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 16:01:08,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:01:08,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 16:01:08,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2023-11-17 16:01:08,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 658 [2023-11-17 16:01:08,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 794 transitions, 19261 flow. Second operand has 9 states, 9 states have (on average 225.55555555555554) internal successors, (2030), 9 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:08,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:01:08,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 658 [2023-11-17 16:01:08,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:01:14,142 INFO L124 PetriNetUnfolderBase]: 15944/23289 cut-off events. [2023-11-17 16:01:14,142 INFO L125 PetriNetUnfolderBase]: For 775466/775466 co-relation queries the response was YES. [2023-11-17 16:01:14,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179500 conditions, 23289 events. 15944/23289 cut-off events. For 775466/775466 co-relation queries the response was YES. Maximal size of possible extension queue 1150. Compared 146775 event pairs, 4279 based on Foata normal form. 4/23293 useless extension candidates. Maximal degree in co-relation 179390. Up to 8892 conditions per place. [2023-11-17 16:01:14,481 INFO L140 encePairwiseOnDemand]: 647/658 looper letters, 394 selfloop transitions, 494 changer transitions 20/908 dead transitions. [2023-11-17 16:01:14,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 908 transitions, 22440 flow [2023-11-17 16:01:14,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 16:01:14,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 16:01:14,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2129 transitions. [2023-11-17 16:01:14,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3595069233367106 [2023-11-17 16:01:14,484 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2129 transitions. [2023-11-17 16:01:14,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2129 transitions. [2023-11-17 16:01:14,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:01:14,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2129 transitions. [2023-11-17 16:01:14,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 236.55555555555554) internal successors, (2129), 9 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:14,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 658.0) internal successors, (6580), 10 states have internal predecessors, (6580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:14,489 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 658.0) internal successors, (6580), 10 states have internal predecessors, (6580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:14,489 INFO L175 Difference]: Start difference. First operand has 314 places, 794 transitions, 19261 flow. Second operand 9 states and 2129 transitions. [2023-11-17 16:01:14,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 908 transitions, 22440 flow [2023-11-17 16:01:23,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 908 transitions, 21637 flow, removed 103 selfloop flow, removed 7 redundant places. [2023-11-17 16:01:23,810 INFO L231 Difference]: Finished difference. Result has 315 places, 807 transitions, 20181 flow [2023-11-17 16:01:23,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=18470, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=794, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=481, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=20181, PETRI_PLACES=315, PETRI_TRANSITIONS=807} [2023-11-17 16:01:23,811 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 277 predicate places. [2023-11-17 16:01:23,811 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 807 transitions, 20181 flow [2023-11-17 16:01:23,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 225.55555555555554) internal successors, (2030), 9 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:23,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:01:23,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:01:23,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-17 16:01:24,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:01:24,013 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:01:24,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:01:24,013 INFO L85 PathProgramCache]: Analyzing trace with hash -610938284, now seen corresponding path program 10 times [2023-11-17 16:01:24,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:01:24,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100172963] [2023-11-17 16:01:24,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:01:24,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:01:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:01:24,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:01:24,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:01:24,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100172963] [2023-11-17 16:01:24,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100172963] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:01:24,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399480937] [2023-11-17 16:01:24,175 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:01:24,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:01:24,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:01:24,176 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:01:24,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-17 16:01:24,339 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:01:24,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:01:24,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-17 16:01:24,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:01:24,599 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:01:24,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 95 [2023-11-17 16:01:24,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:01:24,700 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:01:25,018 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:01:25,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 168 treesize of output 132 [2023-11-17 16:01:25,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:01:25,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399480937] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 16:01:25,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 16:01:25,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5, 11] total 25 [2023-11-17 16:01:25,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067099971] [2023-11-17 16:01:25,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:01:25,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 16:01:25,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:01:25,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 16:01:25,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2023-11-17 16:01:25,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 658 [2023-11-17 16:01:25,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 807 transitions, 20181 flow. Second operand has 10 states, 10 states have (on average 217.3) internal successors, (2173), 10 states have internal predecessors, (2173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:25,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:01:25,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 658 [2023-11-17 16:01:25,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:01:33,260 INFO L124 PetriNetUnfolderBase]: 15903/23224 cut-off events. [2023-11-17 16:01:33,260 INFO L125 PetriNetUnfolderBase]: For 735676/735676 co-relation queries the response was YES. [2023-11-17 16:01:33,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181868 conditions, 23224 events. 15903/23224 cut-off events. For 735676/735676 co-relation queries the response was YES. Maximal size of possible extension queue 1144. Compared 146827 event pairs, 1059 based on Foata normal form. 1/23225 useless extension candidates. Maximal degree in co-relation 181757. Up to 6414 conditions per place. [2023-11-17 16:01:33,567 INFO L140 encePairwiseOnDemand]: 642/658 looper letters, 515 selfloop transitions, 512 changer transitions 10/1037 dead transitions. [2023-11-17 16:01:33,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 1037 transitions, 24365 flow [2023-11-17 16:01:33,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-17 16:01:33,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-17 16:01:33,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4368 transitions. [2023-11-17 16:01:33,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3493840985442329 [2023-11-17 16:01:33,570 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 4368 transitions. [2023-11-17 16:01:33,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 4368 transitions. [2023-11-17 16:01:33,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:01:33,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 4368 transitions. [2023-11-17 16:01:33,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 229.89473684210526) internal successors, (4368), 19 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:33,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 658.0) internal successors, (13160), 20 states have internal predecessors, (13160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:33,582 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 658.0) internal successors, (13160), 20 states have internal predecessors, (13160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:33,583 INFO L175 Difference]: Start difference. First operand has 315 places, 807 transitions, 20181 flow. Second operand 19 states and 4368 transitions. [2023-11-17 16:01:33,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 1037 transitions, 24365 flow [2023-11-17 16:01:44,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 1037 transitions, 23150 flow, removed 51 selfloop flow, removed 6 redundant places. [2023-11-17 16:01:44,333 INFO L231 Difference]: Finished difference. Result has 330 places, 812 transitions, 20262 flow [2023-11-17 16:01:44,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=19025, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=807, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=505, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=20262, PETRI_PLACES=330, PETRI_TRANSITIONS=812} [2023-11-17 16:01:44,334 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 292 predicate places. [2023-11-17 16:01:44,334 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 812 transitions, 20262 flow [2023-11-17 16:01:44,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 217.3) internal successors, (2173), 10 states have internal predecessors, (2173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:44,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:01:44,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:01:44,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-17 16:01:44,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:01:44,539 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:01:44,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:01:44,540 INFO L85 PathProgramCache]: Analyzing trace with hash 400670856, now seen corresponding path program 7 times [2023-11-17 16:01:44,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:01:44,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630751755] [2023-11-17 16:01:44,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:01:44,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:01:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:01:45,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:01:45,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:01:45,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630751755] [2023-11-17 16:01:45,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630751755] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:01:45,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602128368] [2023-11-17 16:01:45,050 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 16:01:45,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:01:45,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:01:45,052 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:01:45,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-17 16:01:45,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:01:45,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-17 16:01:45,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:01:45,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:01:45,475 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:01:45,663 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:01:45,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 168 treesize of output 132 [2023-11-17 16:01:46,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:01:46,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602128368] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 16:01:46,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 16:01:46,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 23 [2023-11-17 16:01:46,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809808328] [2023-11-17 16:01:46,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:01:46,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 16:01:46,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:01:46,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 16:01:46,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2023-11-17 16:01:46,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 658 [2023-11-17 16:01:46,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 812 transitions, 20262 flow. Second operand has 10 states, 10 states have (on average 225.3) internal successors, (2253), 10 states have internal predecessors, (2253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:46,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:01:46,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 658 [2023-11-17 16:01:46,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:01:53,123 INFO L124 PetriNetUnfolderBase]: 15892/23202 cut-off events. [2023-11-17 16:01:53,124 INFO L125 PetriNetUnfolderBase]: For 777817/777817 co-relation queries the response was YES. [2023-11-17 16:01:53,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179397 conditions, 23202 events. 15892/23202 cut-off events. For 777817/777817 co-relation queries the response was YES. Maximal size of possible extension queue 1154. Compared 146297 event pairs, 4509 based on Foata normal form. 4/23206 useless extension candidates. Maximal degree in co-relation 179284. Up to 8746 conditions per place. [2023-11-17 16:01:53,460 INFO L140 encePairwiseOnDemand]: 645/658 looper letters, 503 selfloop transitions, 456 changer transitions 20/979 dead transitions. [2023-11-17 16:01:53,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 979 transitions, 23692 flow [2023-11-17 16:01:53,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 16:01:53,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 16:01:53,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3325 transitions. [2023-11-17 16:01:53,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3609422492401216 [2023-11-17 16:01:53,463 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3325 transitions. [2023-11-17 16:01:53,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3325 transitions. [2023-11-17 16:01:53,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:01:53,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3325 transitions. [2023-11-17 16:01:53,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 237.5) internal successors, (3325), 14 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:53,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 658.0) internal successors, (9870), 15 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:53,472 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 658.0) internal successors, (9870), 15 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:53,472 INFO L175 Difference]: Start difference. First operand has 330 places, 812 transitions, 20262 flow. Second operand 14 states and 3325 transitions. [2023-11-17 16:01:53,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 979 transitions, 23692 flow [2023-11-17 16:02:03,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 979 transitions, 22617 flow, removed 32 selfloop flow, removed 14 redundant places. [2023-11-17 16:02:03,480 INFO L231 Difference]: Finished difference. Result has 329 places, 810 transitions, 20097 flow [2023-11-17 16:02:03,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=19223, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=812, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=456, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=20097, PETRI_PLACES=329, PETRI_TRANSITIONS=810} [2023-11-17 16:02:03,481 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 291 predicate places. [2023-11-17 16:02:03,481 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 810 transitions, 20097 flow [2023-11-17 16:02:03,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 225.3) internal successors, (2253), 10 states have internal predecessors, (2253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:03,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:02:03,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:02:03,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-17 16:02:03,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-11-17 16:02:03,682 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:02:03,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:02:03,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1003754631, now seen corresponding path program 9 times [2023-11-17 16:02:03,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:02:03,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695001587] [2023-11-17 16:02:03,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:03,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:02:03,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:03,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:02:03,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:02:03,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695001587] [2023-11-17 16:02:03,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695001587] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:02:03,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564392587] [2023-11-17 16:02:03,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:02:03,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:02:03,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:02:03,849 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:02:03,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-17 16:02:04,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-17 16:02:04,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:02:04,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-17 16:02:04,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:02:04,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:02:04,431 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 16:02:04,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564392587] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:02:04,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 16:02:04,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 16 [2023-11-17 16:02:04,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600675226] [2023-11-17 16:02:04,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:02:04,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 16:02:04,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:02:04,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 16:02:04,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-11-17 16:02:04,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 658 [2023-11-17 16:02:04,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 810 transitions, 20097 flow. Second operand has 12 states, 12 states have (on average 216.91666666666666) internal successors, (2603), 12 states have internal predecessors, (2603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:04,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:02:04,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 658 [2023-11-17 16:02:04,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:02:10,884 INFO L124 PetriNetUnfolderBase]: 15857/23114 cut-off events. [2023-11-17 16:02:10,884 INFO L125 PetriNetUnfolderBase]: For 757057/757057 co-relation queries the response was YES. [2023-11-17 16:02:11,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179666 conditions, 23114 events. 15857/23114 cut-off events. For 757057/757057 co-relation queries the response was YES. Maximal size of possible extension queue 1145. Compared 145617 event pairs, 2621 based on Foata normal form. 1/23115 useless extension candidates. Maximal degree in co-relation 179553. Up to 10403 conditions per place. [2023-11-17 16:02:11,135 INFO L140 encePairwiseOnDemand]: 644/658 looper letters, 438 selfloop transitions, 497 changer transitions 7/942 dead transitions. [2023-11-17 16:02:11,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 942 transitions, 23172 flow [2023-11-17 16:02:11,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 16:02:11,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 16:02:11,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3196 transitions. [2023-11-17 16:02:11,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3469387755102041 [2023-11-17 16:02:11,138 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3196 transitions. [2023-11-17 16:02:11,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3196 transitions. [2023-11-17 16:02:11,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:02:11,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3196 transitions. [2023-11-17 16:02:11,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 228.28571428571428) internal successors, (3196), 14 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:11,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 658.0) internal successors, (9870), 15 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:11,146 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 658.0) internal successors, (9870), 15 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:11,146 INFO L175 Difference]: Start difference. First operand has 329 places, 810 transitions, 20097 flow. Second operand 14 states and 3196 transitions. [2023-11-17 16:02:11,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 942 transitions, 23172 flow [2023-11-17 16:02:20,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 942 transitions, 22449 flow, removed 3 selfloop flow, removed 8 redundant places. [2023-11-17 16:02:20,538 INFO L231 Difference]: Finished difference. Result has 335 places, 811 transitions, 20435 flow [2023-11-17 16:02:20,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=19374, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=810, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=496, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=20435, PETRI_PLACES=335, PETRI_TRANSITIONS=811} [2023-11-17 16:02:20,539 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 297 predicate places. [2023-11-17 16:02:20,539 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 811 transitions, 20435 flow [2023-11-17 16:02:20,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 216.91666666666666) internal successors, (2603), 12 states have internal predecessors, (2603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:20,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:02:20,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:02:20,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-17 16:02:20,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-11-17 16:02:20,740 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:02:20,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:02:20,741 INFO L85 PathProgramCache]: Analyzing trace with hash -2097435729, now seen corresponding path program 10 times [2023-11-17 16:02:20,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:02:20,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008396642] [2023-11-17 16:02:20,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:20,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:02:20,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:20,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:02:20,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:02:20,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008396642] [2023-11-17 16:02:20,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008396642] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:02:20,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975846406] [2023-11-17 16:02:20,905 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:02:20,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:02:20,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:02:20,909 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:02:20,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-17 16:02:21,077 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:02:21,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:02:21,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-17 16:02:21,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:02:21,402 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:02:21,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 95 [2023-11-17 16:02:21,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:02:21,434 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:02:21,553 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:02:21,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 168 treesize of output 132 [2023-11-17 16:02:22,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:02:22,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975846406] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 16:02:22,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 16:02:22,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 10] total 25 [2023-11-17 16:02:22,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937393485] [2023-11-17 16:02:22,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:02:22,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 16:02:22,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:02:22,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 16:02:22,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2023-11-17 16:02:22,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 658 [2023-11-17 16:02:22,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 811 transitions, 20435 flow. Second operand has 10 states, 10 states have (on average 217.3) internal successors, (2173), 10 states have internal predecessors, (2173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:22,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:02:22,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 658 [2023-11-17 16:02:22,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:02:29,971 INFO L124 PetriNetUnfolderBase]: 18694/27341 cut-off events. [2023-11-17 16:02:29,972 INFO L125 PetriNetUnfolderBase]: For 925745/925745 co-relation queries the response was YES. [2023-11-17 16:02:30,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215647 conditions, 27341 events. 18694/27341 cut-off events. For 925745/925745 co-relation queries the response was YES. Maximal size of possible extension queue 1351. Compared 177920 event pairs, 2248 based on Foata normal form. 2/27343 useless extension candidates. Maximal degree in co-relation 215533. Up to 8388 conditions per place. [2023-11-17 16:02:30,441 INFO L140 encePairwiseOnDemand]: 644/658 looper letters, 611 selfloop transitions, 476 changer transitions 31/1118 dead transitions. [2023-11-17 16:02:30,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 1118 transitions, 27677 flow [2023-11-17 16:02:30,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 16:02:30,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 16:02:30,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3436 transitions. [2023-11-17 16:02:30,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34812563323201623 [2023-11-17 16:02:30,444 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3436 transitions. [2023-11-17 16:02:30,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3436 transitions. [2023-11-17 16:02:30,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:02:30,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3436 transitions. [2023-11-17 16:02:30,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 229.06666666666666) internal successors, (3436), 15 states have internal predecessors, (3436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:30,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 658.0) internal successors, (10528), 16 states have internal predecessors, (10528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:30,451 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 658.0) internal successors, (10528), 16 states have internal predecessors, (10528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:30,451 INFO L175 Difference]: Start difference. First operand has 335 places, 811 transitions, 20435 flow. Second operand 15 states and 3436 transitions. [2023-11-17 16:02:30,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 1118 transitions, 27677 flow [2023-11-17 16:02:43,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 1118 transitions, 26478 flow, removed 16 selfloop flow, removed 13 redundant places. [2023-11-17 16:02:43,759 INFO L231 Difference]: Finished difference. Result has 346 places, 893 transitions, 23268 flow [2023-11-17 16:02:43,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=19370, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=811, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=394, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=23268, PETRI_PLACES=346, PETRI_TRANSITIONS=893} [2023-11-17 16:02:43,760 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 308 predicate places. [2023-11-17 16:02:43,760 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 893 transitions, 23268 flow [2023-11-17 16:02:43,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 217.3) internal successors, (2173), 10 states have internal predecessors, (2173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:43,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:02:43,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:02:43,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-17 16:02:43,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:02:43,961 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:02:43,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:02:43,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1461579701, now seen corresponding path program 11 times [2023-11-17 16:02:43,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:02:43,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553868622] [2023-11-17 16:02:43,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:43,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:02:43,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:44,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:02:44,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:02:44,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553868622] [2023-11-17 16:02:44,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553868622] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:02:44,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14850947] [2023-11-17 16:02:44,100 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:02:44,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:02:44,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:02:44,101 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:02:44,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-17 16:02:44,240 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:02:44,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:02:44,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-17 16:02:44,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:02:44,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:02:44,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:02:44,705 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:02:44,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 168 treesize of output 132 [2023-11-17 16:02:45,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:02:45,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14850947] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 16:02:45,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 16:02:45,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 11] total 26 [2023-11-17 16:02:45,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755595595] [2023-11-17 16:02:45,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:02:45,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 16:02:45,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:02:45,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 16:02:45,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2023-11-17 16:02:45,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 658 [2023-11-17 16:02:45,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 893 transitions, 23268 flow. Second operand has 10 states, 10 states have (on average 217.3) internal successors, (2173), 10 states have internal predecessors, (2173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:45,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:02:45,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 658 [2023-11-17 16:02:45,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:02:55,181 INFO L124 PetriNetUnfolderBase]: 18941/27707 cut-off events. [2023-11-17 16:02:55,181 INFO L125 PetriNetUnfolderBase]: For 965234/965234 co-relation queries the response was YES. [2023-11-17 16:02:55,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222471 conditions, 27707 events. 18941/27707 cut-off events. For 965234/965234 co-relation queries the response was YES. Maximal size of possible extension queue 1366. Compared 180697 event pairs, 1412 based on Foata normal form. 7/27714 useless extension candidates. Maximal degree in co-relation 222348. Up to 9482 conditions per place. [2023-11-17 16:02:55,706 INFO L140 encePairwiseOnDemand]: 642/658 looper letters, 477 selfloop transitions, 587 changer transitions 44/1108 dead transitions. [2023-11-17 16:02:55,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 1108 transitions, 28024 flow [2023-11-17 16:02:55,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 16:02:55,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 16:02:55,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3463 transitions. [2023-11-17 16:02:55,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3508611955420466 [2023-11-17 16:02:55,708 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3463 transitions. [2023-11-17 16:02:55,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3463 transitions. [2023-11-17 16:02:55,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:02:55,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3463 transitions. [2023-11-17 16:02:55,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 230.86666666666667) internal successors, (3463), 15 states have internal predecessors, (3463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:55,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 658.0) internal successors, (10528), 16 states have internal predecessors, (10528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:55,715 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 658.0) internal successors, (10528), 16 states have internal predecessors, (10528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:55,715 INFO L175 Difference]: Start difference. First operand has 346 places, 893 transitions, 23268 flow. Second operand 15 states and 3463 transitions. [2023-11-17 16:02:55,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 1108 transitions, 28024 flow [2023-11-17 16:03:12,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 1108 transitions, 27884 flow, removed 42 selfloop flow, removed 5 redundant places. [2023-11-17 16:03:12,557 INFO L231 Difference]: Finished difference. Result has 356 places, 897 transitions, 24715 flow [2023-11-17 16:03:12,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=23160, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=893, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=573, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=24715, PETRI_PLACES=356, PETRI_TRANSITIONS=897} [2023-11-17 16:03:12,557 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 318 predicate places. [2023-11-17 16:03:12,558 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 897 transitions, 24715 flow [2023-11-17 16:03:12,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 217.3) internal successors, (2173), 10 states have internal predecessors, (2173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:12,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:03:12,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:03:12,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-17 16:03:12,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:03:12,759 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:03:12,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:03:12,759 INFO L85 PathProgramCache]: Analyzing trace with hash 199097507, now seen corresponding path program 12 times [2023-11-17 16:03:12,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:03:12,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785846722] [2023-11-17 16:03:12,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:03:12,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:03:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:03:12,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:03:12,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:03:12,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785846722] [2023-11-17 16:03:12,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785846722] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:03:12,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676043615] [2023-11-17 16:03:12,883 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:03:12,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:03:12,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:03:12,884 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:03:12,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-17 16:03:13,023 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-17 16:03:13,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:03:13,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-17 16:03:13,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:03:13,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:03:13,304 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 16:03:13,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676043615] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:03:13,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 16:03:13,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 16 [2023-11-17 16:03:13,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241801473] [2023-11-17 16:03:13,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:03:13,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 16:03:13,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:03:13,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 16:03:13,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-11-17 16:03:13,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 658 [2023-11-17 16:03:13,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 897 transitions, 24715 flow. Second operand has 12 states, 12 states have (on average 216.91666666666666) internal successors, (2603), 12 states have internal predecessors, (2603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:13,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:03:13,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 658 [2023-11-17 16:03:13,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:03:21,770 INFO L124 PetriNetUnfolderBase]: 18620/27319 cut-off events. [2023-11-17 16:03:21,770 INFO L125 PetriNetUnfolderBase]: For 1069894/1069894 co-relation queries the response was YES. [2023-11-17 16:03:22,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226223 conditions, 27319 events. 18620/27319 cut-off events. For 1069894/1069894 co-relation queries the response was YES. Maximal size of possible extension queue 1349. Compared 178066 event pairs, 3060 based on Foata normal form. 44/27363 useless extension candidates. Maximal degree in co-relation 226099. Up to 12323 conditions per place. [2023-11-17 16:03:22,134 INFO L140 encePairwiseOnDemand]: 643/658 looper letters, 477 selfloop transitions, 550 changer transitions 24/1051 dead transitions. [2023-11-17 16:03:22,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 1051 transitions, 28285 flow [2023-11-17 16:03:22,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-17 16:03:22,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-17 16:03:22,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3867 transitions. [2023-11-17 16:03:22,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3456999821205078 [2023-11-17 16:03:22,137 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3867 transitions. [2023-11-17 16:03:22,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3867 transitions. [2023-11-17 16:03:22,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:03:22,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3867 transitions. [2023-11-17 16:03:22,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 227.47058823529412) internal successors, (3867), 17 states have internal predecessors, (3867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:22,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 658.0) internal successors, (11844), 18 states have internal predecessors, (11844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:22,145 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 658.0) internal successors, (11844), 18 states have internal predecessors, (11844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:22,145 INFO L175 Difference]: Start difference. First operand has 356 places, 897 transitions, 24715 flow. Second operand 17 states and 3867 transitions. [2023-11-17 16:03:22,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 1051 transitions, 28285 flow [2023-11-17 16:03:38,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 1051 transitions, 27243 flow, removed 115 selfloop flow, removed 11 redundant places. [2023-11-17 16:03:38,270 INFO L231 Difference]: Finished difference. Result has 367 places, 899 transitions, 25020 flow [2023-11-17 16:03:38,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=23447, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=887, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=538, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=25020, PETRI_PLACES=367, PETRI_TRANSITIONS=899} [2023-11-17 16:03:38,271 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 329 predicate places. [2023-11-17 16:03:38,271 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 899 transitions, 25020 flow [2023-11-17 16:03:38,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 216.91666666666666) internal successors, (2603), 12 states have internal predecessors, (2603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:38,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:03:38,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:03:38,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-17 16:03:38,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:03:38,477 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:03:38,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:03:38,477 INFO L85 PathProgramCache]: Analyzing trace with hash -829529943, now seen corresponding path program 13 times [2023-11-17 16:03:38,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:03:38,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254879760] [2023-11-17 16:03:38,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:03:38,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:03:38,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:03:38,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:03:38,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:03:38,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254879760] [2023-11-17 16:03:38,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254879760] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:03:38,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028362331] [2023-11-17 16:03:38,599 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 16:03:38,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:03:38,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:03:38,600 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:03:38,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-17 16:03:38,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:03:38,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-17 16:03:38,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:03:39,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:03:39,059 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:03:39,317 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:03:39,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 168 treesize of output 132 [2023-11-17 16:03:40,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:03:40,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028362331] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 16:03:40,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 16:03:40,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 11] total 26 [2023-11-17 16:03:40,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318682239] [2023-11-17 16:03:40,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:03:40,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 16:03:40,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:03:40,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 16:03:40,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=569, Unknown=0, NotChecked=0, Total=702 [2023-11-17 16:03:40,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 658 [2023-11-17 16:03:40,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 899 transitions, 25020 flow. Second operand has 10 states, 10 states have (on average 217.3) internal successors, (2173), 10 states have internal predecessors, (2173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:40,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:03:40,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 658 [2023-11-17 16:03:40,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:03:50,165 INFO L124 PetriNetUnfolderBase]: 18595/27259 cut-off events. [2023-11-17 16:03:50,165 INFO L125 PetriNetUnfolderBase]: For 1022742/1022742 co-relation queries the response was YES. [2023-11-17 16:03:50,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226291 conditions, 27259 events. 18595/27259 cut-off events. For 1022742/1022742 co-relation queries the response was YES. Maximal size of possible extension queue 1324. Compared 177031 event pairs, 1382 based on Foata normal form. 3/27262 useless extension candidates. Maximal degree in co-relation 226160. Up to 9113 conditions per place. [2023-11-17 16:03:50,835 INFO L140 encePairwiseOnDemand]: 642/658 looper letters, 503 selfloop transitions, 581 changer transitions 18/1102 dead transitions. [2023-11-17 16:03:50,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 1102 transitions, 29237 flow [2023-11-17 16:03:50,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-17 16:03:50,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-17 16:03:50,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3690 transitions. [2023-11-17 16:03:50,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35049392097264437 [2023-11-17 16:03:50,839 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3690 transitions. [2023-11-17 16:03:50,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3690 transitions. [2023-11-17 16:03:50,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:03:50,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3690 transitions. [2023-11-17 16:03:50,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 230.625) internal successors, (3690), 16 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:50,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 658.0) internal successors, (11186), 17 states have internal predecessors, (11186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:50,848 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 658.0) internal successors, (11186), 17 states have internal predecessors, (11186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:50,848 INFO L175 Difference]: Start difference. First operand has 367 places, 899 transitions, 25020 flow. Second operand 16 states and 3690 transitions. [2023-11-17 16:03:50,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 1102 transitions, 29237 flow [2023-11-17 16:04:08,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 1102 transitions, 28622 flow, removed 44 selfloop flow, removed 8 redundant places. [2023-11-17 16:04:08,578 INFO L231 Difference]: Finished difference. Result has 374 places, 899 transitions, 25626 flow [2023-11-17 16:04:08,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=24420, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=899, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=578, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=25626, PETRI_PLACES=374, PETRI_TRANSITIONS=899} [2023-11-17 16:04:08,579 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 336 predicate places. [2023-11-17 16:04:08,579 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 899 transitions, 25626 flow [2023-11-17 16:04:08,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 217.3) internal successors, (2173), 10 states have internal predecessors, (2173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:04:08,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:04:08,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:04:08,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-11-17 16:04:08,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-11-17 16:04:08,780 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:04:08,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:04:08,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1033822584, now seen corresponding path program 11 times [2023-11-17 16:04:08,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:04:08,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256082326] [2023-11-17 16:04:08,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:04:08,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:04:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:04:08,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:04:08,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:04:08,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256082326] [2023-11-17 16:04:08,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256082326] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:04:08,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44438766] [2023-11-17 16:04:08,894 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:04:08,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:04:08,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:04:08,897 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:04:08,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-17 16:04:09,074 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:04:09,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:04:09,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-17 16:04:09,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:04:09,293 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:04:09,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 95 [2023-11-17 16:04:09,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:04:09,417 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:04:09,781 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:04:09,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 168 treesize of output 132 [2023-11-17 16:04:10,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:04:10,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44438766] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 16:04:10,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 16:04:10,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5, 11] total 25 [2023-11-17 16:04:10,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882215219] [2023-11-17 16:04:10,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:04:10,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 16:04:10,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:04:10,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 16:04:10,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=522, Unknown=0, NotChecked=0, Total=650 [2023-11-17 16:04:10,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 658 [2023-11-17 16:04:10,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 899 transitions, 25626 flow. Second operand has 10 states, 10 states have (on average 217.3) internal successors, (2173), 10 states have internal predecessors, (2173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:04:10,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:04:10,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 658 [2023-11-17 16:04:10,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:04:20,931 INFO L124 PetriNetUnfolderBase]: 21951/32112 cut-off events. [2023-11-17 16:04:20,931 INFO L125 PetriNetUnfolderBase]: For 1183398/1183398 co-relation queries the response was YES. [2023-11-17 16:04:21,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276574 conditions, 32112 events. 21951/32112 cut-off events. For 1183398/1183398 co-relation queries the response was YES. Maximal size of possible extension queue 1554. Compared 213092 event pairs, 1366 based on Foata normal form. 2/32114 useless extension candidates. Maximal degree in co-relation 276441. Up to 7465 conditions per place. [2023-11-17 16:04:21,740 INFO L140 encePairwiseOnDemand]: 642/658 looper letters, 724 selfloop transitions, 565 changer transitions 11/1300 dead transitions. [2023-11-17 16:04:21,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 1300 transitions, 35420 flow [2023-11-17 16:04:21,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-17 16:04:21,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-17 16:04:21,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4359 transitions. [2023-11-17 16:04:21,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34866421372580386 [2023-11-17 16:04:21,744 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 4359 transitions. [2023-11-17 16:04:21,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 4359 transitions. [2023-11-17 16:04:21,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:04:21,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 4359 transitions. [2023-11-17 16:04:21,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 229.42105263157896) internal successors, (4359), 19 states have internal predecessors, (4359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:04:21,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 658.0) internal successors, (13160), 20 states have internal predecessors, (13160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:04:21,754 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 658.0) internal successors, (13160), 20 states have internal predecessors, (13160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:04:21,754 INFO L175 Difference]: Start difference. First operand has 374 places, 899 transitions, 25626 flow. Second operand 19 states and 4359 transitions. [2023-11-17 16:04:21,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 1300 transitions, 35420 flow [2023-11-17 16:04:42,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 1300 transitions, 33897 flow, removed 24 selfloop flow, removed 15 redundant places. [2023-11-17 16:04:42,265 INFO L231 Difference]: Finished difference. Result has 388 places, 1008 transitions, 29318 flow [2023-11-17 16:04:42,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=24324, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=899, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=458, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=29318, PETRI_PLACES=388, PETRI_TRANSITIONS=1008} [2023-11-17 16:04:42,266 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 350 predicate places. [2023-11-17 16:04:42,266 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 1008 transitions, 29318 flow [2023-11-17 16:04:42,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 217.3) internal successors, (2173), 10 states have internal predecessors, (2173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:04:42,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:04:42,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:04:42,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-11-17 16:04:42,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-11-17 16:04:42,467 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:04:42,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:04:42,467 INFO L85 PathProgramCache]: Analyzing trace with hash 254853624, now seen corresponding path program 12 times [2023-11-17 16:04:42,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:04:42,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967776308] [2023-11-17 16:04:42,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:04:42,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:04:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:04:42,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:04:42,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:04:42,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967776308] [2023-11-17 16:04:42,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967776308] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:04:42,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963028737] [2023-11-17 16:04:42,585 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:04:42,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:04:42,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:04:42,589 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:04:42,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-17 16:04:42,772 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-17 16:04:42,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:04:42,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-17 16:04:42,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:04:43,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:04:43,066 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 16:04:43,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963028737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:04:43,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 16:04:43,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 15 [2023-11-17 16:04:43,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578534922] [2023-11-17 16:04:43,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:04:43,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 16:04:43,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:04:43,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 16:04:43,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2023-11-17 16:04:43,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 658 [2023-11-17 16:04:43,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 1008 transitions, 29318 flow. Second operand has 12 states, 12 states have (on average 216.91666666666666) internal successors, (2603), 12 states have internal predecessors, (2603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:04:43,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:04:43,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 658 [2023-11-17 16:04:43,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand