/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.fix-rcfgbuilder-lbe-0ccecc1-m [2023-11-10 12:30:23,032 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-10 12:30:23,094 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-10 12:30:23,128 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-10 12:30:23,129 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-10 12:30:23,129 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-10 12:30:23,130 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-10 12:30:23,130 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-10 12:30:23,130 INFO L153 SettingsManager]: * Use SBE=true [2023-11-10 12:30:23,134 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-10 12:30:23,134 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-10 12:30:23,134 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-10 12:30:23,135 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-10 12:30:23,136 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-10 12:30:23,136 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-10 12:30:23,137 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-10 12:30:23,137 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-10 12:30:23,137 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-10 12:30:23,137 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-10 12:30:23,137 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-10 12:30:23,138 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-10 12:30:23,138 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-10 12:30:23,138 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-10 12:30:23,139 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-10 12:30:23,139 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-10 12:30:23,139 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 12:30:23,140 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-10 12:30:23,140 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-10 12:30:23,141 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-10 12:30:23,141 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-10 12:30:23,142 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-10 12:30:23,142 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-10 12:30:23,142 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-10 12:30:23,142 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-10 12:30:23,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-10 12:30:23,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-10 12:30:23,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-10 12:30:23,407 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-10 12:30:23,408 INFO L274 PluginConnector]: CDTParser initialized [2023-11-10 12:30:23,409 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c [2023-11-10 12:30:24,541 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-10 12:30:24,756 INFO L384 CDTParser]: Found 1 translation units. [2023-11-10 12:30:24,756 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c [2023-11-10 12:30:24,766 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a412f0ac1/dd7f34ca34b64cbfa462da12135ecc3c/FLAGb8467c435 [2023-11-10 12:30:24,785 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a412f0ac1/dd7f34ca34b64cbfa462da12135ecc3c [2023-11-10 12:30:24,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-10 12:30:24,791 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-10 12:30:24,792 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-10 12:30:24,792 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-10 12:30:24,796 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-10 12:30:24,797 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:30:24" (1/1) ... [2023-11-10 12:30:24,797 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d29624a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:30:24, skipping insertion in model container [2023-11-10 12:30:24,799 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:30:24" (1/1) ... [2023-11-10 12:30:24,836 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-10 12:30:25,001 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c[4218,4231] [2023-11-10 12:30:25,011 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 12:30:25,019 INFO L202 MainTranslator]: Completed pre-run [2023-11-10 12:30:25,042 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c[4218,4231] [2023-11-10 12:30:25,046 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 12:30:25,053 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-10 12:30:25,054 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-10 12:30:25,060 INFO L206 MainTranslator]: Completed translation [2023-11-10 12:30:25,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:30:25 WrapperNode [2023-11-10 12:30:25,061 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-10 12:30:25,062 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-10 12:30:25,062 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-10 12:30:25,062 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-10 12:30:25,068 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:30:25" (1/1) ... [2023-11-10 12:30:25,085 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:30:25" (1/1) ... [2023-11-10 12:30:25,112 INFO L138 Inliner]: procedures = 27, calls = 80, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 316 [2023-11-10 12:30:25,112 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-10 12:30:25,113 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-10 12:30:25,113 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-10 12:30:25,113 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-10 12:30:25,121 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:30:25" (1/1) ... [2023-11-10 12:30:25,121 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:30:25" (1/1) ... [2023-11-10 12:30:25,125 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:30:25" (1/1) ... [2023-11-10 12:30:25,125 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:30:25" (1/1) ... [2023-11-10 12:30:25,134 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:30:25" (1/1) ... [2023-11-10 12:30:25,138 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:30:25" (1/1) ... [2023-11-10 12:30:25,140 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:30:25" (1/1) ... [2023-11-10 12:30:25,141 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:30:25" (1/1) ... [2023-11-10 12:30:25,144 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-10 12:30:25,145 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-10 12:30:25,145 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-10 12:30:25,145 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-10 12:30:25,146 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:30:25" (1/1) ... [2023-11-10 12:30:25,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 12:30:25,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:30:25,179 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-10 12:30:25,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-10 12:30:25,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-10 12:30:25,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-10 12:30:25,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-10 12:30:25,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-10 12:30:25,216 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-10 12:30:25,216 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-10 12:30:25,216 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-10 12:30:25,216 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-10 12:30:25,216 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-10 12:30:25,216 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-10 12:30:25,217 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-10 12:30:25,217 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-10 12:30:25,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-10 12:30:25,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-10 12:30:25,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-10 12:30:25,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-10 12:30:25,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-10 12:30:25,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-10 12:30:25,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-10 12:30:25,219 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-10 12:30:25,313 INFO L236 CfgBuilder]: Building ICFG [2023-11-10 12:30:25,315 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-10 12:30:25,700 INFO L277 CfgBuilder]: Performing block encoding [2023-11-10 12:30:25,914 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-10 12:30:25,914 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-10 12:30:25,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:30:25 BoogieIcfgContainer [2023-11-10 12:30:25,921 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-10 12:30:25,924 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-10 12:30:25,924 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-10 12:30:25,927 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-10 12:30:25,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 12:30:24" (1/3) ... [2023-11-10 12:30:25,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c5599d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:30:25, skipping insertion in model container [2023-11-10 12:30:25,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:30:25" (2/3) ... [2023-11-10 12:30:25,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c5599d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:30:25, skipping insertion in model container [2023-11-10 12:30:25,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:30:25" (3/3) ... [2023-11-10 12:30:25,931 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult.wvr.c [2023-11-10 12:30:25,962 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-10 12:30:25,962 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-10 12:30:25,962 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-10 12:30:26,038 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-10 12:30:26,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 237 transitions, 502 flow [2023-11-10 12:30:26,153 INFO L124 PetriNetUnfolderBase]: 18/233 cut-off events. [2023-11-10 12:30:26,153 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-10 12:30:26,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 233 events. 18/233 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 120 event pairs, 0 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 194. Up to 2 conditions per place. [2023-11-10 12:30:26,159 INFO L82 GeneralOperation]: Start removeDead. Operand has 232 places, 237 transitions, 502 flow [2023-11-10 12:30:26,168 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 215 places, 220 transitions, 464 flow [2023-11-10 12:30:26,182 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 12:30:26,192 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;@27e10b17, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 12:30:26,193 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-10 12:30:26,255 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 12:30:26,255 INFO L124 PetriNetUnfolderBase]: 18/219 cut-off events. [2023-11-10 12:30:26,255 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-10 12:30:26,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:30:26,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:30:26,257 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 2 more)] === [2023-11-10 12:30:26,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:30:26,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1711421172, now seen corresponding path program 1 times [2023-11-10 12:30:26,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:30:26,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465534107] [2023-11-10 12:30:26,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:30:26,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:30:26,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:30:27,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:30:27,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:30:27,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465534107] [2023-11-10 12:30:27,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465534107] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:30:27,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:30:27,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-10 12:30:27,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858778809] [2023-11-10 12:30:27,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:30:27,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-10 12:30:27,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:30:27,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-10 12:30:27,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-10 12:30:27,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 237 [2023-11-10 12:30:27,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 220 transitions, 464 flow. Second operand has 5 states, 5 states have (on average 176.0) internal successors, (880), 5 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:27,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:30:27,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 237 [2023-11-10 12:30:27,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:30:27,511 INFO L124 PetriNetUnfolderBase]: 251/798 cut-off events. [2023-11-10 12:30:27,512 INFO L125 PetriNetUnfolderBase]: For 148/149 co-relation queries the response was YES. [2023-11-10 12:30:27,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1277 conditions, 798 events. 251/798 cut-off events. For 148/149 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3496 event pairs, 36 based on Foata normal form. 217/940 useless extension candidates. Maximal degree in co-relation 963. Up to 242 conditions per place. [2023-11-10 12:30:27,522 INFO L140 encePairwiseOnDemand]: 213/237 looper letters, 58 selfloop transitions, 3 changer transitions 11/223 dead transitions. [2023-11-10 12:30:27,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 223 transitions, 629 flow [2023-11-10 12:30:27,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-10 12:30:27,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-10 12:30:27,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1259 transitions. [2023-11-10 12:30:27,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7588908981314044 [2023-11-10 12:30:27,542 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1259 transitions. [2023-11-10 12:30:27,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1259 transitions. [2023-11-10 12:30:27,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:30:27,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1259 transitions. [2023-11-10 12:30:27,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 179.85714285714286) internal successors, (1259), 7 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:27,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 237.0) internal successors, (1896), 8 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:27,562 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 237.0) internal successors, (1896), 8 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:27,563 INFO L175 Difference]: Start difference. First operand has 215 places, 220 transitions, 464 flow. Second operand 7 states and 1259 transitions. [2023-11-10 12:30:27,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 223 transitions, 629 flow [2023-11-10 12:30:27,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 223 transitions, 603 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-10 12:30:27,578 INFO L231 Difference]: Finished difference. Result has 216 places, 204 transitions, 435 flow [2023-11-10 12:30:27,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=435, PETRI_PLACES=216, PETRI_TRANSITIONS=204} [2023-11-10 12:30:27,583 INFO L281 CegarLoopForPetriNet]: 215 programPoint places, 1 predicate places. [2023-11-10 12:30:27,583 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 204 transitions, 435 flow [2023-11-10 12:30:27,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 176.0) internal successors, (880), 5 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:27,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:30:27,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:30:27,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-10 12:30:27,586 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 2 more)] === [2023-11-10 12:30:27,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:30:27,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1776948929, now seen corresponding path program 1 times [2023-11-10 12:30:27,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:30:27,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569503568] [2023-11-10 12:30:27,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:30:27,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:30:27,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:30:27,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:30:27,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:30:27,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569503568] [2023-11-10 12:30:27,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569503568] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:30:27,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:30:27,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-10 12:30:27,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582720235] [2023-11-10 12:30:27,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:30:27,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-10 12:30:27,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:30:27,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-10 12:30:27,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-10 12:30:27,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 237 [2023-11-10 12:30:27,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 204 transitions, 435 flow. Second operand has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:27,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:30:27,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 237 [2023-11-10 12:30:27,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:30:28,079 INFO L124 PetriNetUnfolderBase]: 397/1190 cut-off events. [2023-11-10 12:30:28,080 INFO L125 PetriNetUnfolderBase]: For 214/214 co-relation queries the response was YES. [2023-11-10 12:30:28,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1989 conditions, 1190 events. 397/1190 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6470 event pairs, 190 based on Foata normal form. 17/1037 useless extension candidates. Maximal degree in co-relation 1973. Up to 432 conditions per place. [2023-11-10 12:30:28,092 INFO L140 encePairwiseOnDemand]: 234/237 looper letters, 33 selfloop transitions, 2 changer transitions 0/217 dead transitions. [2023-11-10 12:30:28,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 217 transitions, 543 flow [2023-11-10 12:30:28,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-10 12:30:28,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-10 12:30:28,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 645 transitions. [2023-11-10 12:30:28,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9071729957805907 [2023-11-10 12:30:28,095 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 645 transitions. [2023-11-10 12:30:28,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 645 transitions. [2023-11-10 12:30:28,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:30:28,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 645 transitions. [2023-11-10 12:30:28,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:28,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:28,099 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:28,100 INFO L175 Difference]: Start difference. First operand has 216 places, 204 transitions, 435 flow. Second operand 3 states and 645 transitions. [2023-11-10 12:30:28,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 217 transitions, 543 flow [2023-11-10 12:30:28,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 217 transitions, 535 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-10 12:30:28,109 INFO L231 Difference]: Finished difference. Result has 206 places, 205 transitions, 442 flow [2023-11-10 12:30:28,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=442, PETRI_PLACES=206, PETRI_TRANSITIONS=205} [2023-11-10 12:30:28,110 INFO L281 CegarLoopForPetriNet]: 215 programPoint places, -9 predicate places. [2023-11-10 12:30:28,110 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 205 transitions, 442 flow [2023-11-10 12:30:28,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:28,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:30:28,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:30:28,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-10 12:30:28,112 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 2 more)] === [2023-11-10 12:30:28,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:30:28,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1550337095, now seen corresponding path program 1 times [2023-11-10 12:30:28,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:30:28,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306054592] [2023-11-10 12:30:28,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:30:28,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:30:28,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:30:28,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:30:28,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:30:28,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306054592] [2023-11-10 12:30:28,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306054592] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:30:28,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:30:28,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-10 12:30:28,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147098494] [2023-11-10 12:30:28,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:30:28,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-10 12:30:28,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:30:28,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-10 12:30:28,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-10 12:30:28,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 237 [2023-11-10 12:30:28,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 205 transitions, 442 flow. Second operand has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:28,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:30:28,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 237 [2023-11-10 12:30:28,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:30:28,446 INFO L124 PetriNetUnfolderBase]: 299/1053 cut-off events. [2023-11-10 12:30:28,446 INFO L125 PetriNetUnfolderBase]: For 359/360 co-relation queries the response was YES. [2023-11-10 12:30:28,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1783 conditions, 1053 events. 299/1053 cut-off events. For 359/360 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 5552 event pairs, 106 based on Foata normal form. 14/918 useless extension candidates. Maximal degree in co-relation 919. Up to 353 conditions per place. [2023-11-10 12:30:28,455 INFO L140 encePairwiseOnDemand]: 234/237 looper letters, 34 selfloop transitions, 2 changer transitions 0/218 dead transitions. [2023-11-10 12:30:28,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 218 transitions, 559 flow [2023-11-10 12:30:28,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-10 12:30:28,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-10 12:30:28,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 644 transitions. [2023-11-10 12:30:28,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9057665260196905 [2023-11-10 12:30:28,457 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 644 transitions. [2023-11-10 12:30:28,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 644 transitions. [2023-11-10 12:30:28,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:30:28,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 644 transitions. [2023-11-10 12:30:28,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:28,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:28,461 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:28,461 INFO L175 Difference]: Start difference. First operand has 206 places, 205 transitions, 442 flow. Second operand 3 states and 644 transitions. [2023-11-10 12:30:28,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 218 transitions, 559 flow [2023-11-10 12:30:28,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 218 transitions, 556 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-10 12:30:28,466 INFO L231 Difference]: Finished difference. Result has 208 places, 206 transitions, 454 flow [2023-11-10 12:30:28,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=454, PETRI_PLACES=208, PETRI_TRANSITIONS=206} [2023-11-10 12:30:28,468 INFO L281 CegarLoopForPetriNet]: 215 programPoint places, -7 predicate places. [2023-11-10 12:30:28,468 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 206 transitions, 454 flow [2023-11-10 12:30:28,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:28,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:30:28,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:30:28,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-10 12:30:28,469 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 2 more)] === [2023-11-10 12:30:28,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:30:28,470 INFO L85 PathProgramCache]: Analyzing trace with hash 484668360, now seen corresponding path program 1 times [2023-11-10 12:30:28,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:30:28,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744028753] [2023-11-10 12:30:28,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:30:28,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:30:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:30:28,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-10 12:30:28,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:30:28,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744028753] [2023-11-10 12:30:28,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744028753] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:30:28,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:30:28,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 12:30:28,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734273659] [2023-11-10 12:30:28,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:30:28,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 12:30:28,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:30:28,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 12:30:28,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-10 12:30:28,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 237 [2023-11-10 12:30:28,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 206 transitions, 454 flow. Second operand has 6 states, 6 states have (on average 183.83333333333334) internal successors, (1103), 6 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:28,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:30:28,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 237 [2023-11-10 12:30:28,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:30:28,990 INFO L124 PetriNetUnfolderBase]: 212/976 cut-off events. [2023-11-10 12:30:28,990 INFO L125 PetriNetUnfolderBase]: For 388/389 co-relation queries the response was YES. [2023-11-10 12:30:28,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1714 conditions, 976 events. 212/976 cut-off events. For 388/389 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4701 event pairs, 98 based on Foata normal form. 12/887 useless extension candidates. Maximal degree in co-relation 800. Up to 294 conditions per place. [2023-11-10 12:30:28,998 INFO L140 encePairwiseOnDemand]: 226/237 looper letters, 74 selfloop transitions, 12 changer transitions 0/242 dead transitions. [2023-11-10 12:30:28,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 242 transitions, 719 flow [2023-11-10 12:30:28,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-10 12:30:28,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-10 12:30:29,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1683 transitions. [2023-11-10 12:30:29,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7890295358649789 [2023-11-10 12:30:29,002 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1683 transitions. [2023-11-10 12:30:29,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1683 transitions. [2023-11-10 12:30:29,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:30:29,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1683 transitions. [2023-11-10 12:30:29,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:29,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 237.0) internal successors, (2370), 10 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:29,013 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 237.0) internal successors, (2370), 10 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:29,013 INFO L175 Difference]: Start difference. First operand has 208 places, 206 transitions, 454 flow. Second operand 9 states and 1683 transitions. [2023-11-10 12:30:29,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 242 transitions, 719 flow [2023-11-10 12:30:29,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 242 transitions, 716 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-10 12:30:29,019 INFO L231 Difference]: Finished difference. Result has 218 places, 211 transitions, 502 flow [2023-11-10 12:30:29,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=502, PETRI_PLACES=218, PETRI_TRANSITIONS=211} [2023-11-10 12:30:29,021 INFO L281 CegarLoopForPetriNet]: 215 programPoint places, 3 predicate places. [2023-11-10 12:30:29,021 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 211 transitions, 502 flow [2023-11-10 12:30:29,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.83333333333334) internal successors, (1103), 6 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:29,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:30:29,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:30:29,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-10 12:30:29,022 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 2 more)] === [2023-11-10 12:30:29,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:30:29,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1467016246, now seen corresponding path program 1 times [2023-11-10 12:30:29,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:30:29,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355799255] [2023-11-10 12:30:29,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:30:29,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:30:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:30:29,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:30:29,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:30:29,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355799255] [2023-11-10 12:30:29,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355799255] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:30:29,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:30:29,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 12:30:29,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707042678] [2023-11-10 12:30:29,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:30:29,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 12:30:29,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:30:29,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 12:30:29,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-10 12:30:29,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 237 [2023-11-10 12:30:29,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 211 transitions, 502 flow. Second operand has 6 states, 6 states have (on average 183.83333333333334) internal successors, (1103), 6 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:29,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:30:29,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 237 [2023-11-10 12:30:29,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:30:29,581 INFO L124 PetriNetUnfolderBase]: 236/1223 cut-off events. [2023-11-10 12:30:29,581 INFO L125 PetriNetUnfolderBase]: For 502/504 co-relation queries the response was YES. [2023-11-10 12:30:29,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2106 conditions, 1223 events. 236/1223 cut-off events. For 502/504 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 6519 event pairs, 110 based on Foata normal form. 20/1123 useless extension candidates. Maximal degree in co-relation 1553. Up to 353 conditions per place. [2023-11-10 12:30:29,591 INFO L140 encePairwiseOnDemand]: 226/237 looper letters, 64 selfloop transitions, 12 changer transitions 0/232 dead transitions. [2023-11-10 12:30:29,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 232 transitions, 718 flow [2023-11-10 12:30:29,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-10 12:30:29,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-10 12:30:29,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1668 transitions. [2023-11-10 12:30:29,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7819971870604782 [2023-11-10 12:30:29,599 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1668 transitions. [2023-11-10 12:30:29,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1668 transitions. [2023-11-10 12:30:29,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:30:29,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1668 transitions. [2023-11-10 12:30:29,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 185.33333333333334) internal successors, (1668), 9 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:29,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 237.0) internal successors, (2370), 10 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:29,607 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 237.0) internal successors, (2370), 10 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:29,607 INFO L175 Difference]: Start difference. First operand has 218 places, 211 transitions, 502 flow. Second operand 9 states and 1668 transitions. [2023-11-10 12:30:29,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 232 transitions, 718 flow [2023-11-10 12:30:29,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 232 transitions, 711 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-10 12:30:29,615 INFO L231 Difference]: Finished difference. Result has 227 places, 216 transitions, 545 flow [2023-11-10 12:30:29,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=545, PETRI_PLACES=227, PETRI_TRANSITIONS=216} [2023-11-10 12:30:29,618 INFO L281 CegarLoopForPetriNet]: 215 programPoint places, 12 predicate places. [2023-11-10 12:30:29,618 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 216 transitions, 545 flow [2023-11-10 12:30:29,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.83333333333334) internal successors, (1103), 6 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:29,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:30:29,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:30:29,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-10 12:30:29,619 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 2 more)] === [2023-11-10 12:30:29,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:30:29,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1125191944, now seen corresponding path program 1 times [2023-11-10 12:30:29,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:30:29,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902834658] [2023-11-10 12:30:29,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:30:29,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:30:29,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:30:30,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-10 12:30:30,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:30:30,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902834658] [2023-11-10 12:30:30,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902834658] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:30:30,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:30:30,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-10 12:30:30,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923544776] [2023-11-10 12:30:30,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:30:30,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-10 12:30:30,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:30:30,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-10 12:30:30,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-10 12:30:30,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 237 [2023-11-10 12:30:30,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 216 transitions, 545 flow. Second operand has 8 states, 8 states have (on average 196.125) internal successors, (1569), 8 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:30,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:30:30,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 237 [2023-11-10 12:30:30,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:30:32,828 INFO L124 PetriNetUnfolderBase]: 8216/14952 cut-off events. [2023-11-10 12:30:32,829 INFO L125 PetriNetUnfolderBase]: For 4833/4833 co-relation queries the response was YES. [2023-11-10 12:30:32,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31208 conditions, 14952 events. 8216/14952 cut-off events. For 4833/4833 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 120714 event pairs, 1547 based on Foata normal form. 0/13004 useless extension candidates. Maximal degree in co-relation 25541. Up to 5372 conditions per place. [2023-11-10 12:30:32,945 INFO L140 encePairwiseOnDemand]: 227/237 looper letters, 121 selfloop transitions, 17 changer transitions 11/330 dead transitions. [2023-11-10 12:30:32,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 330 transitions, 1199 flow [2023-11-10 12:30:32,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-10 12:30:32,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-10 12:30:32,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1878 transitions. [2023-11-10 12:30:32,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8804500703234881 [2023-11-10 12:30:32,950 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1878 transitions. [2023-11-10 12:30:32,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1878 transitions. [2023-11-10 12:30:32,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:30:32,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1878 transitions. [2023-11-10 12:30:32,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 208.66666666666666) internal successors, (1878), 9 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:32,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 237.0) internal successors, (2370), 10 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:32,959 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 237.0) internal successors, (2370), 10 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:32,959 INFO L175 Difference]: Start difference. First operand has 227 places, 216 transitions, 545 flow. Second operand 9 states and 1878 transitions. [2023-11-10 12:30:32,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 330 transitions, 1199 flow [2023-11-10 12:30:32,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 330 transitions, 1192 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-10 12:30:32,968 INFO L231 Difference]: Finished difference. Result has 239 places, 232 transitions, 649 flow [2023-11-10 12:30:32,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=649, PETRI_PLACES=239, PETRI_TRANSITIONS=232} [2023-11-10 12:30:32,971 INFO L281 CegarLoopForPetriNet]: 215 programPoint places, 24 predicate places. [2023-11-10 12:30:32,971 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 232 transitions, 649 flow [2023-11-10 12:30:32,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 196.125) internal successors, (1569), 8 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:32,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:30:32,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:30:32,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-10 12:30:32,973 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 2 more)] === [2023-11-10 12:30:32,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:30:32,974 INFO L85 PathProgramCache]: Analyzing trace with hash 896692318, now seen corresponding path program 2 times [2023-11-10 12:30:32,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:30:32,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640556746] [2023-11-10 12:30:32,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:30:32,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:30:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:30:33,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-10 12:30:33,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:30:33,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640556746] [2023-11-10 12:30:33,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640556746] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:30:33,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457573018] [2023-11-10 12:30:33,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-10 12:30:33,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:30:33,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:30:33,542 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) [2023-11-10 12:30:33,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-10 12:30:33,700 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-10 12:30:33,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:30:33,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-10 12:30:33,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:30:33,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-10 12:30:33,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:30:33,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-10 12:30:33,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457573018] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:30:33,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:30:33,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2023-11-10 12:30:33,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529006033] [2023-11-10 12:30:33,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:30:33,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-10 12:30:33,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:30:33,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-10 12:30:33,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-11-10 12:30:33,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 237 [2023-11-10 12:30:33,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 232 transitions, 649 flow. Second operand has 13 states, 13 states have (on average 193.15384615384616) internal successors, (2511), 13 states have internal predecessors, (2511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:33,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:30:33,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 237 [2023-11-10 12:30:33,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:30:37,901 INFO L124 PetriNetUnfolderBase]: 12484/22483 cut-off events. [2023-11-10 12:30:37,901 INFO L125 PetriNetUnfolderBase]: For 15529/15529 co-relation queries the response was YES. [2023-11-10 12:30:37,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55371 conditions, 22483 events. 12484/22483 cut-off events. For 15529/15529 co-relation queries the response was YES. Maximal size of possible extension queue 1012. Compared 191589 event pairs, 445 based on Foata normal form. 0/21335 useless extension candidates. Maximal degree in co-relation 45113. Up to 3000 conditions per place. [2023-11-10 12:30:38,109 INFO L140 encePairwiseOnDemand]: 224/237 looper letters, 309 selfloop transitions, 61 changer transitions 9/558 dead transitions. [2023-11-10 12:30:38,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 558 transitions, 2716 flow [2023-11-10 12:30:38,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-10 12:30:38,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-10 12:30:38,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3859 transitions. [2023-11-10 12:30:38,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.856984232733733 [2023-11-10 12:30:38,118 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3859 transitions. [2023-11-10 12:30:38,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3859 transitions. [2023-11-10 12:30:38,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:30:38,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3859 transitions. [2023-11-10 12:30:38,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 203.10526315789474) internal successors, (3859), 19 states have internal predecessors, (3859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:38,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 237.0) internal successors, (4740), 20 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:38,137 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 237.0) internal successors, (4740), 20 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:38,137 INFO L175 Difference]: Start difference. First operand has 239 places, 232 transitions, 649 flow. Second operand 19 states and 3859 transitions. [2023-11-10 12:30:38,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 558 transitions, 2716 flow [2023-11-10 12:30:38,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 558 transitions, 2716 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-10 12:30:38,171 INFO L231 Difference]: Finished difference. Result has 266 places, 283 transitions, 1076 flow [2023-11-10 12:30:38,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1076, PETRI_PLACES=266, PETRI_TRANSITIONS=283} [2023-11-10 12:30:38,171 INFO L281 CegarLoopForPetriNet]: 215 programPoint places, 51 predicate places. [2023-11-10 12:30:38,172 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 283 transitions, 1076 flow [2023-11-10 12:30:38,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 193.15384615384616) internal successors, (2511), 13 states have internal predecessors, (2511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:38,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:30:38,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:30:38,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-10 12:30:38,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:30:38,379 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 2 more)] === [2023-11-10 12:30:38,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:30:38,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1622054596, now seen corresponding path program 3 times [2023-11-10 12:30:38,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:30:38,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313783715] [2023-11-10 12:30:38,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:30:38,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:30:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:30:39,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-10 12:30:39,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:30:39,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313783715] [2023-11-10 12:30:39,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313783715] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:30:39,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:30:39,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-10 12:30:39,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340365809] [2023-11-10 12:30:39,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:30:39,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-10 12:30:39,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:30:39,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-10 12:30:39,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-10 12:30:39,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 237 [2023-11-10 12:30:39,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 283 transitions, 1076 flow. Second operand has 9 states, 9 states have (on average 195.77777777777777) internal successors, (1762), 9 states have internal predecessors, (1762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:39,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:30:39,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 237 [2023-11-10 12:30:39,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:30:43,217 INFO L124 PetriNetUnfolderBase]: 14453/28670 cut-off events. [2023-11-10 12:30:43,218 INFO L125 PetriNetUnfolderBase]: For 52435/52866 co-relation queries the response was YES. [2023-11-10 12:30:43,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85941 conditions, 28670 events. 14453/28670 cut-off events. For 52435/52866 co-relation queries the response was YES. Maximal size of possible extension queue 1091. Compared 266817 event pairs, 3068 based on Foata normal form. 84/26818 useless extension candidates. Maximal degree in co-relation 70675. Up to 10372 conditions per place. [2023-11-10 12:30:43,462 INFO L140 encePairwiseOnDemand]: 227/237 looper letters, 173 selfloop transitions, 38 changer transitions 18/422 dead transitions. [2023-11-10 12:30:43,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 422 transitions, 2397 flow [2023-11-10 12:30:43,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-10 12:30:43,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-10 12:30:43,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1653 transitions. [2023-11-10 12:30:43,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8718354430379747 [2023-11-10 12:30:43,466 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1653 transitions. [2023-11-10 12:30:43,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1653 transitions. [2023-11-10 12:30:43,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:30:43,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1653 transitions. [2023-11-10 12:30:43,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 206.625) internal successors, (1653), 8 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:43,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 237.0) internal successors, (2133), 9 states have internal predecessors, (2133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:43,487 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 237.0) internal successors, (2133), 9 states have internal predecessors, (2133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:43,487 INFO L175 Difference]: Start difference. First operand has 266 places, 283 transitions, 1076 flow. Second operand 8 states and 1653 transitions. [2023-11-10 12:30:43,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 422 transitions, 2397 flow [2023-11-10 12:30:43,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 422 transitions, 2365 flow, removed 16 selfloop flow, removed 0 redundant places. [2023-11-10 12:30:43,945 INFO L231 Difference]: Finished difference. Result has 277 places, 303 transitions, 1342 flow [2023-11-10 12:30:43,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1342, PETRI_PLACES=277, PETRI_TRANSITIONS=303} [2023-11-10 12:30:43,948 INFO L281 CegarLoopForPetriNet]: 215 programPoint places, 62 predicate places. [2023-11-10 12:30:43,948 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 303 transitions, 1342 flow [2023-11-10 12:30:43,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 195.77777777777777) internal successors, (1762), 9 states have internal predecessors, (1762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:43,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:30:43,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:30:43,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-10 12:30:43,950 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 2 more)] === [2023-11-10 12:30:43,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:30:43,950 INFO L85 PathProgramCache]: Analyzing trace with hash 516862390, now seen corresponding path program 4 times [2023-11-10 12:30:43,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:30:43,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647506787] [2023-11-10 12:30:43,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:30:43,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:30:44,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:30:44,611 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-10 12:30:44,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:30:44,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647506787] [2023-11-10 12:30:44,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647506787] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:30:44,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:30:44,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-10 12:30:44,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685348192] [2023-11-10 12:30:44,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:30:44,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-10 12:30:44,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:30:44,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-10 12:30:44,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-10 12:30:44,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 237 [2023-11-10 12:30:44,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 303 transitions, 1342 flow. Second operand has 8 states, 8 states have (on average 192.625) internal successors, (1541), 8 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:44,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:30:44,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 237 [2023-11-10 12:30:44,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:30:50,135 INFO L124 PetriNetUnfolderBase]: 21005/40511 cut-off events. [2023-11-10 12:30:50,135 INFO L125 PetriNetUnfolderBase]: For 81844/82264 co-relation queries the response was YES. [2023-11-10 12:30:50,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123603 conditions, 40511 events. 21005/40511 cut-off events. For 81844/82264 co-relation queries the response was YES. Maximal size of possible extension queue 1611. Compared 394610 event pairs, 2316 based on Foata normal form. 322/39219 useless extension candidates. Maximal degree in co-relation 107076. Up to 11828 conditions per place. [2023-11-10 12:30:50,671 INFO L140 encePairwiseOnDemand]: 227/237 looper letters, 264 selfloop transitions, 85 changer transitions 8/546 dead transitions. [2023-11-10 12:30:50,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 546 transitions, 3523 flow [2023-11-10 12:30:50,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-10 12:30:50,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-10 12:30:50,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2268 transitions. [2023-11-10 12:30:50,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8699654775604143 [2023-11-10 12:30:50,676 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2268 transitions. [2023-11-10 12:30:50,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2268 transitions. [2023-11-10 12:30:50,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:30:50,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2268 transitions. [2023-11-10 12:30:50,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 206.1818181818182) internal successors, (2268), 11 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:50,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 237.0) internal successors, (2844), 12 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:50,686 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 237.0) internal successors, (2844), 12 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:50,686 INFO L175 Difference]: Start difference. First operand has 277 places, 303 transitions, 1342 flow. Second operand 11 states and 2268 transitions. [2023-11-10 12:30:50,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 546 transitions, 3523 flow [2023-11-10 12:30:51,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 546 transitions, 3441 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-11-10 12:30:51,290 INFO L231 Difference]: Finished difference. Result has 290 places, 353 transitions, 2004 flow [2023-11-10 12:30:51,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=1300, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2004, PETRI_PLACES=290, PETRI_TRANSITIONS=353} [2023-11-10 12:30:51,291 INFO L281 CegarLoopForPetriNet]: 215 programPoint places, 75 predicate places. [2023-11-10 12:30:51,291 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 353 transitions, 2004 flow [2023-11-10 12:30:51,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 192.625) internal successors, (1541), 8 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:51,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:30:51,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:30:51,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-10 12:30:51,292 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 2 more)] === [2023-11-10 12:30:51,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:30:51,293 INFO L85 PathProgramCache]: Analyzing trace with hash -2078902094, now seen corresponding path program 5 times [2023-11-10 12:30:51,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:30:51,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523403777] [2023-11-10 12:30:51,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:30:51,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:30:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:30:51,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-10 12:30:51,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:30:51,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523403777] [2023-11-10 12:30:51,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523403777] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:30:51,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:30:51,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-10 12:30:51,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573362219] [2023-11-10 12:30:51,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:30:51,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-10 12:30:51,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:30:51,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-10 12:30:51,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-10 12:30:51,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 237 [2023-11-10 12:30:51,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 353 transitions, 2004 flow. Second operand has 8 states, 8 states have (on average 196.125) internal successors, (1569), 8 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:51,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:30:51,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 237 [2023-11-10 12:30:51,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:30:59,075 INFO L124 PetriNetUnfolderBase]: 23894/46940 cut-off events. [2023-11-10 12:30:59,075 INFO L125 PetriNetUnfolderBase]: For 134781/135334 co-relation queries the response was YES. [2023-11-10 12:30:59,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165008 conditions, 46940 events. 23894/46940 cut-off events. For 134781/135334 co-relation queries the response was YES. Maximal size of possible extension queue 1785. Compared 473990 event pairs, 3072 based on Foata normal form. 735/45897 useless extension candidates. Maximal degree in co-relation 140373. Up to 15115 conditions per place. [2023-11-10 12:30:59,542 INFO L140 encePairwiseOnDemand]: 226/237 looper letters, 284 selfloop transitions, 132 changer transitions 14/625 dead transitions. [2023-11-10 12:30:59,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 625 transitions, 5023 flow [2023-11-10 12:30:59,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-10 12:30:59,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-10 12:30:59,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2092 transitions. [2023-11-10 12:30:59,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8827004219409282 [2023-11-10 12:30:59,547 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2092 transitions. [2023-11-10 12:30:59,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2092 transitions. [2023-11-10 12:30:59,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:30:59,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2092 transitions. [2023-11-10 12:30:59,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 209.2) internal successors, (2092), 10 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:59,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 237.0) internal successors, (2607), 11 states have internal predecessors, (2607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:59,556 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 237.0) internal successors, (2607), 11 states have internal predecessors, (2607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:30:59,556 INFO L175 Difference]: Start difference. First operand has 290 places, 353 transitions, 2004 flow. Second operand 10 states and 2092 transitions. [2023-11-10 12:30:59,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 625 transitions, 5023 flow [2023-11-10 12:31:00,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 625 transitions, 4912 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-11-10 12:31:00,734 INFO L231 Difference]: Finished difference. Result has 303 places, 421 transitions, 3143 flow [2023-11-10 12:31:00,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=1948, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3143, PETRI_PLACES=303, PETRI_TRANSITIONS=421} [2023-11-10 12:31:00,735 INFO L281 CegarLoopForPetriNet]: 215 programPoint places, 88 predicate places. [2023-11-10 12:31:00,735 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 421 transitions, 3143 flow [2023-11-10 12:31:00,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 196.125) internal successors, (1569), 8 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:31:00,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:31:00,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:31:00,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-10 12:31:00,736 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 2 more)] === [2023-11-10 12:31:00,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:31:00,736 INFO L85 PathProgramCache]: Analyzing trace with hash -927091930, now seen corresponding path program 6 times [2023-11-10 12:31:00,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:31:00,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124045531] [2023-11-10 12:31:00,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:31:00,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:31:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:31:01,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-10 12:31:01,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:31:01,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124045531] [2023-11-10 12:31:01,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124045531] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:31:01,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:31:01,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-10 12:31:01,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191163078] [2023-11-10 12:31:01,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:31:01,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-10 12:31:01,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:31:01,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-10 12:31:01,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-10 12:31:01,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 237 [2023-11-10 12:31:01,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 421 transitions, 3143 flow. Second operand has 8 states, 8 states have (on average 192.625) internal successors, (1541), 8 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:31:01,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:31:01,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 237 [2023-11-10 12:31:01,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:31:10,649 INFO L124 PetriNetUnfolderBase]: 31476/60206 cut-off events. [2023-11-10 12:31:10,649 INFO L125 PetriNetUnfolderBase]: For 228092/228915 co-relation queries the response was YES. [2023-11-10 12:31:11,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227459 conditions, 60206 events. 31476/60206 cut-off events. For 228092/228915 co-relation queries the response was YES. Maximal size of possible extension queue 2306. Compared 615368 event pairs, 4573 based on Foata normal form. 385/58102 useless extension candidates. Maximal degree in co-relation 213867. Up to 17959 conditions per place. [2023-11-10 12:31:11,414 INFO L140 encePairwiseOnDemand]: 228/237 looper letters, 236 selfloop transitions, 147 changer transitions 8/582 dead transitions. [2023-11-10 12:31:11,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 582 transitions, 5254 flow [2023-11-10 12:31:11,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-10 12:31:11,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-10 12:31:11,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1451 transitions. [2023-11-10 12:31:11,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8746232670283303 [2023-11-10 12:31:11,418 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1451 transitions. [2023-11-10 12:31:11,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1451 transitions. [2023-11-10 12:31:11,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:31:11,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1451 transitions. [2023-11-10 12:31:11,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 207.28571428571428) internal successors, (1451), 7 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:31:11,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 237.0) internal successors, (1896), 8 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:31:11,425 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 237.0) internal successors, (1896), 8 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:31:11,425 INFO L175 Difference]: Start difference. First operand has 303 places, 421 transitions, 3143 flow. Second operand 7 states and 1451 transitions. [2023-11-10 12:31:11,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 582 transitions, 5254 flow [2023-11-10 12:31:14,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 582 transitions, 5164 flow, removed 30 selfloop flow, removed 1 redundant places. [2023-11-10 12:31:14,695 INFO L231 Difference]: Finished difference. Result has 311 places, 449 transitions, 3926 flow [2023-11-10 12:31:14,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=3091, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3926, PETRI_PLACES=311, PETRI_TRANSITIONS=449} [2023-11-10 12:31:14,696 INFO L281 CegarLoopForPetriNet]: 215 programPoint places, 96 predicate places. [2023-11-10 12:31:14,696 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 449 transitions, 3926 flow [2023-11-10 12:31:14,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 192.625) internal successors, (1541), 8 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:31:14,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:31:14,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:31:14,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-10 12:31:14,698 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 2 more)] === [2023-11-10 12:31:14,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:31:14,698 INFO L85 PathProgramCache]: Analyzing trace with hash 731304464, now seen corresponding path program 7 times [2023-11-10 12:31:14,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:31:14,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063744033] [2023-11-10 12:31:14,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:31:14,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:31:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:31:15,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-10 12:31:15,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:31:15,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063744033] [2023-11-10 12:31:15,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063744033] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:31:15,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:31:15,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 12:31:15,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342242324] [2023-11-10 12:31:15,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:31:15,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 12:31:15,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:31:15,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 12:31:15,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-10 12:31:15,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 237 [2023-11-10 12:31:15,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 449 transitions, 3926 flow. Second operand has 7 states, 7 states have (on average 196.57142857142858) internal successors, (1376), 7 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:31:15,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:31:15,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 237 [2023-11-10 12:31:15,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:31:23,264 INFO L124 PetriNetUnfolderBase]: 24917/50354 cut-off events. [2023-11-10 12:31:23,264 INFO L125 PetriNetUnfolderBase]: For 216561/217723 co-relation queries the response was YES. [2023-11-10 12:31:23,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195881 conditions, 50354 events. 24917/50354 cut-off events. For 216561/217723 co-relation queries the response was YES. Maximal size of possible extension queue 1947. Compared 523854 event pairs, 4126 based on Foata normal form. 589/48947 useless extension candidates. Maximal degree in co-relation 179111. Up to 14812 conditions per place. [2023-11-10 12:31:23,933 INFO L140 encePairwiseOnDemand]: 226/237 looper letters, 263 selfloop transitions, 164 changer transitions 16/640 dead transitions. [2023-11-10 12:31:23,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 640 transitions, 6095 flow [2023-11-10 12:31:23,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-10 12:31:23,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-10 12:31:23,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2293 transitions. [2023-11-10 12:31:23,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8795550441120061 [2023-11-10 12:31:23,939 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2293 transitions. [2023-11-10 12:31:23,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2293 transitions. [2023-11-10 12:31:23,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:31:23,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2293 transitions. [2023-11-10 12:31:23,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 208.45454545454547) internal successors, (2293), 11 states have internal predecessors, (2293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:31:23,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 237.0) internal successors, (2844), 12 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:31:23,948 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 237.0) internal successors, (2844), 12 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:31:23,948 INFO L175 Difference]: Start difference. First operand has 311 places, 449 transitions, 3926 flow. Second operand 11 states and 2293 transitions. [2023-11-10 12:31:23,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 640 transitions, 6095 flow [2023-11-10 12:31:26,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 640 transitions, 5924 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-10 12:31:26,258 INFO L231 Difference]: Finished difference. Result has 325 places, 463 transitions, 4454 flow [2023-11-10 12:31:26,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=3762, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4454, PETRI_PLACES=325, PETRI_TRANSITIONS=463} [2023-11-10 12:31:26,259 INFO L281 CegarLoopForPetriNet]: 215 programPoint places, 110 predicate places. [2023-11-10 12:31:26,259 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 463 transitions, 4454 flow [2023-11-10 12:31:26,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 196.57142857142858) internal successors, (1376), 7 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:31:26,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:31:26,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:31:26,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-10 12:31:26,260 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 2 more)] === [2023-11-10 12:31:26,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:31:26,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1095764568, now seen corresponding path program 8 times [2023-11-10 12:31:26,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:31:26,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123421441] [2023-11-10 12:31:26,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:31:26,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:31:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:31:26,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-10 12:31:26,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:31:26,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123421441] [2023-11-10 12:31:26,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123421441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:31:26,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:31:26,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-10 12:31:26,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060782486] [2023-11-10 12:31:26,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:31:26,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-10 12:31:26,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:31:26,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-10 12:31:26,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-10 12:31:26,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 237 [2023-11-10 12:31:26,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 463 transitions, 4454 flow. Second operand has 9 states, 9 states have (on average 195.77777777777777) internal successors, (1762), 9 states have internal predecessors, (1762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:31:26,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:31:26,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 237 [2023-11-10 12:31:26,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:31:34,994 INFO L124 PetriNetUnfolderBase]: 22709/45992 cut-off events. [2023-11-10 12:31:34,995 INFO L125 PetriNetUnfolderBase]: For 235857/236817 co-relation queries the response was YES. [2023-11-10 12:31:35,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189289 conditions, 45992 events. 22709/45992 cut-off events. For 235857/236817 co-relation queries the response was YES. Maximal size of possible extension queue 1714. Compared 471528 event pairs, 4196 based on Foata normal form. 273/44503 useless extension candidates. Maximal degree in co-relation 182134. Up to 15792 conditions per place. [2023-11-10 12:31:35,744 INFO L140 encePairwiseOnDemand]: 227/237 looper letters, 214 selfloop transitions, 127 changer transitions 29/567 dead transitions. [2023-11-10 12:31:35,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 567 transitions, 5732 flow [2023-11-10 12:31:35,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-10 12:31:35,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-10 12:31:35,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1466 transitions. [2023-11-10 12:31:35,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8836648583484027 [2023-11-10 12:31:35,747 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1466 transitions. [2023-11-10 12:31:35,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1466 transitions. [2023-11-10 12:31:35,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:31:35,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1466 transitions. [2023-11-10 12:31:35,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 209.42857142857142) internal successors, (1466), 7 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:31:35,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 237.0) internal successors, (1896), 8 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:31:35,752 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 237.0) internal successors, (1896), 8 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:31:35,753 INFO L175 Difference]: Start difference. First operand has 325 places, 463 transitions, 4454 flow. Second operand 7 states and 1466 transitions. [2023-11-10 12:31:35,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 567 transitions, 5732 flow [2023-11-10 12:31:37,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 567 transitions, 5681 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-10 12:31:37,597 INFO L231 Difference]: Finished difference. Result has 330 places, 437 transitions, 4169 flow [2023-11-10 12:31:37,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=3975, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4169, PETRI_PLACES=330, PETRI_TRANSITIONS=437} [2023-11-10 12:31:37,598 INFO L281 CegarLoopForPetriNet]: 215 programPoint places, 115 predicate places. [2023-11-10 12:31:37,598 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 437 transitions, 4169 flow [2023-11-10 12:31:37,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 195.77777777777777) internal successors, (1762), 9 states have internal predecessors, (1762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:31:37,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:31:37,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:31:37,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-10 12:31:37,600 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 2 more)] === [2023-11-10 12:31:37,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:31:37,600 INFO L85 PathProgramCache]: Analyzing trace with hash 689655318, now seen corresponding path program 9 times [2023-11-10 12:31:37,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:31:37,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311378726] [2023-11-10 12:31:37,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:31:37,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:31:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:31:38,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-10 12:31:38,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:31:38,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311378726] [2023-11-10 12:31:38,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311378726] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:31:38,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:31:38,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-10 12:31:38,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343741770] [2023-11-10 12:31:38,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:31:38,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-10 12:31:38,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:31:38,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-10 12:31:38,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-10 12:31:38,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 237 [2023-11-10 12:31:38,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 437 transitions, 4169 flow. Second operand has 8 states, 8 states have (on average 196.125) internal successors, (1569), 8 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:31:38,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:31:38,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 237 [2023-11-10 12:31:38,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:31:46,495 INFO L124 PetriNetUnfolderBase]: 26414/50933 cut-off events. [2023-11-10 12:31:46,495 INFO L125 PetriNetUnfolderBase]: For 285438/286068 co-relation queries the response was YES. [2023-11-10 12:31:46,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217030 conditions, 50933 events. 26414/50933 cut-off events. For 285438/286068 co-relation queries the response was YES. Maximal size of possible extension queue 1989. Compared 507871 event pairs, 2889 based on Foata normal form. 558/49625 useless extension candidates. Maximal degree in co-relation 209776. Up to 16326 conditions per place. [2023-11-10 12:31:47,120 INFO L140 encePairwiseOnDemand]: 228/237 looper letters, 250 selfloop transitions, 226 changer transitions 6/679 dead transitions. [2023-11-10 12:31:47,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 679 transitions, 7596 flow [2023-11-10 12:31:47,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-10 12:31:47,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-10 12:31:47,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2277 transitions. [2023-11-10 12:31:47,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8734177215189873 [2023-11-10 12:31:47,123 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2277 transitions. [2023-11-10 12:31:47,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2277 transitions. [2023-11-10 12:31:47,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:31:47,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2277 transitions. [2023-11-10 12:31:47,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 207.0) internal successors, (2277), 11 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:31:47,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 237.0) internal successors, (2844), 12 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:31:47,130 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 237.0) internal successors, (2844), 12 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:31:47,130 INFO L175 Difference]: Start difference. First operand has 330 places, 437 transitions, 4169 flow. Second operand 11 states and 2277 transitions. [2023-11-10 12:31:47,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 679 transitions, 7596 flow [2023-11-10 12:31:49,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 679 transitions, 6984 flow, removed 14 selfloop flow, removed 10 redundant places. [2023-11-10 12:31:49,491 INFO L231 Difference]: Finished difference. Result has 333 places, 521 transitions, 5718 flow [2023-11-10 12:31:49,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=3756, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5718, PETRI_PLACES=333, PETRI_TRANSITIONS=521} [2023-11-10 12:31:49,492 INFO L281 CegarLoopForPetriNet]: 215 programPoint places, 118 predicate places. [2023-11-10 12:31:49,492 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 521 transitions, 5718 flow [2023-11-10 12:31:49,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 196.125) internal successors, (1569), 8 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:31:49,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:31:49,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:31:49,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-10 12:31:49,493 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 2 more)] === [2023-11-10 12:31:49,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:31:49,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1617326992, now seen corresponding path program 10 times [2023-11-10 12:31:49,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:31:49,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248480810] [2023-11-10 12:31:49,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:31:49,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:31:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:31:49,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-10 12:31:49,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:31:49,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248480810] [2023-11-10 12:31:49,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248480810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:31:49,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:31:49,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-10 12:31:49,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696707431] [2023-11-10 12:31:49,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:31:49,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-10 12:31:49,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:31:49,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-10 12:31:49,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-10 12:31:49,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 237 [2023-11-10 12:31:49,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 521 transitions, 5718 flow. Second operand has 8 states, 8 states have (on average 192.625) internal successors, (1541), 8 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:31:49,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:31:49,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 237 [2023-11-10 12:31:49,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand