/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/chl-name-comparator-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.fix-rcfgbuilder-lbe-0ccecc1-m [2023-11-10 12:14:24,181 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-10 12:14:24,218 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 12:14:24,238 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-10 12:14:24,238 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-10 12:14:24,239 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-10 12:14:24,239 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-10 12:14:24,240 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-10 12:14:24,240 INFO L153 SettingsManager]: * Use SBE=true [2023-11-10 12:14:24,240 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-10 12:14:24,240 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-10 12:14:24,241 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-10 12:14:24,241 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-10 12:14:24,241 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-10 12:14:24,242 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-10 12:14:24,242 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-10 12:14:24,242 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-10 12:14:24,243 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-10 12:14:24,243 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-10 12:14:24,243 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-10 12:14:24,243 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-10 12:14:24,244 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-10 12:14:24,244 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-10 12:14:24,244 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-10 12:14:24,245 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-10 12:14:24,245 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 12:14:24,245 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-10 12:14:24,245 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-10 12:14:24,246 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-10 12:14:24,246 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-10 12:14:24,246 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-10 12:14:24,246 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-10 12:14:24,246 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-10 12:14:24,246 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-10 12:14:24,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-10 12:14:24,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-10 12:14:24,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-10 12:14:24,467 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-10 12:14:24,468 INFO L274 PluginConnector]: CDTParser initialized [2023-11-10 12:14:24,468 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-name-comparator-symm.wvr.c [2023-11-10 12:14:25,431 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-10 12:14:25,632 INFO L384 CDTParser]: Found 1 translation units. [2023-11-10 12:14:25,632 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-symm.wvr.c [2023-11-10 12:14:25,639 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ba6ec91f/af22cd2aa9f340d49ee8d468c1951c57/FLAG7b52f13b9 [2023-11-10 12:14:25,648 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ba6ec91f/af22cd2aa9f340d49ee8d468c1951c57 [2023-11-10 12:14:25,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-10 12:14:25,650 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-10 12:14:25,651 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-10 12:14:25,651 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-10 12:14:25,654 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-10 12:14:25,654 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:14:25" (1/1) ... [2023-11-10 12:14:25,655 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1507a659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:14:25, skipping insertion in model container [2023-11-10 12:14:25,655 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:14:25" (1/1) ... [2023-11-10 12:14:25,669 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-10 12:14:25,781 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-symm.wvr.c[3856,3869] [2023-11-10 12:14:25,789 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 12:14:25,795 INFO L202 MainTranslator]: Completed pre-run [2023-11-10 12:14:25,810 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-symm.wvr.c[3856,3869] [2023-11-10 12:14:25,813 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 12:14:25,822 INFO L206 MainTranslator]: Completed translation [2023-11-10 12:14:25,822 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:14:25 WrapperNode [2023-11-10 12:14:25,823 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-10 12:14:25,823 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-10 12:14:25,823 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-10 12:14:25,823 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-10 12:14:25,827 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:14:25" (1/1) ... [2023-11-10 12:14:25,833 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:14:25" (1/1) ... [2023-11-10 12:14:25,850 INFO L138 Inliner]: procedures = 25, calls = 34, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 227 [2023-11-10 12:14:25,851 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-10 12:14:25,851 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-10 12:14:25,851 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-10 12:14:25,851 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-10 12:14:25,857 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:14:25" (1/1) ... [2023-11-10 12:14:25,857 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:14:25" (1/1) ... [2023-11-10 12:14:25,859 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:14:25" (1/1) ... [2023-11-10 12:14:25,859 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:14:25" (1/1) ... [2023-11-10 12:14:25,864 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:14:25" (1/1) ... [2023-11-10 12:14:25,866 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:14:25" (1/1) ... [2023-11-10 12:14:25,867 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:14:25" (1/1) ... [2023-11-10 12:14:25,868 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:14:25" (1/1) ... [2023-11-10 12:14:25,870 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-10 12:14:25,870 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-10 12:14:25,870 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-10 12:14:25,871 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-10 12:14:25,871 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:14:25" (1/1) ... [2023-11-10 12:14:25,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 12:14:25,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:14:25,903 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 12:14:25,919 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 12:14:25,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-10 12:14:25,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-10 12:14:25,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-10 12:14:25,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-10 12:14:25,929 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-10 12:14:25,929 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-10 12:14:25,929 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-10 12:14:25,929 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-10 12:14:25,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-10 12:14:25,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-10 12:14:25,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-10 12:14:25,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-10 12:14:25,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-10 12:14:25,931 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 12:14:26,036 INFO L236 CfgBuilder]: Building ICFG [2023-11-10 12:14:26,038 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-10 12:14:26,285 INFO L277 CfgBuilder]: Performing block encoding [2023-11-10 12:14:26,296 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-10 12:14:26,297 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-10 12:14:26,300 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:14:26 BoogieIcfgContainer [2023-11-10 12:14:26,300 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-10 12:14:26,301 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-10 12:14:26,301 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-10 12:14:26,303 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-10 12:14:26,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 12:14:25" (1/3) ... [2023-11-10 12:14:26,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30e6fe88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:14:26, skipping insertion in model container [2023-11-10 12:14:26,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:14:25" (2/3) ... [2023-11-10 12:14:26,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30e6fe88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:14:26, skipping insertion in model container [2023-11-10 12:14:26,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:14:26" (3/3) ... [2023-11-10 12:14:26,305 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-symm.wvr.c [2023-11-10 12:14:26,317 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-10 12:14:26,317 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-10 12:14:26,317 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-10 12:14:26,378 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-10 12:14:26,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 283 transitions, 580 flow [2023-11-10 12:14:26,484 INFO L124 PetriNetUnfolderBase]: 19/281 cut-off events. [2023-11-10 12:14:26,484 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-10 12:14:26,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 281 events. 19/281 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 506 event pairs, 0 based on Foata normal form. 0/261 useless extension candidates. Maximal degree in co-relation 185. Up to 2 conditions per place. [2023-11-10 12:14:26,495 INFO L82 GeneralOperation]: Start removeDead. Operand has 271 places, 283 transitions, 580 flow [2023-11-10 12:14:26,505 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 260 places, 272 transitions, 556 flow [2023-11-10 12:14:26,514 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 12:14:26,540 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;@4d2fdfae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 12:14:26,540 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-10 12:14:26,601 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 12:14:26,601 INFO L124 PetriNetUnfolderBase]: 19/271 cut-off events. [2023-11-10 12:14:26,602 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-10 12:14:26,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:14:26,602 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] [2023-11-10 12:14:26,603 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:14:26,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:14:26,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1494234661, now seen corresponding path program 1 times [2023-11-10 12:14:26,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:14:26,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45143029] [2023-11-10 12:14:26,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:14:26,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:14:26,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:14:26,930 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 12:14:26,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:14:26,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45143029] [2023-11-10 12:14:26,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45143029] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:14:26,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:14:26,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-10 12:14:26,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041015143] [2023-11-10 12:14:26,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:14:26,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-10 12:14:26,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:14:26,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-10 12:14:26,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-10 12:14:26,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 283 [2023-11-10 12:14:26,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 272 transitions, 556 flow. Second operand has 2 states, 2 states have (on average 267.0) internal successors, (534), 2 states have internal predecessors, (534), 0 states have call successors, (0), 0 states 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 12:14:26,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:14:26,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 283 [2023-11-10 12:14:26,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:14:27,022 INFO L124 PetriNetUnfolderBase]: 5/258 cut-off events. [2023-11-10 12:14:27,022 INFO L125 PetriNetUnfolderBase]: For 9/10 co-relation queries the response was YES. [2023-11-10 12:14:27,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 258 events. 5/258 cut-off events. For 9/10 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 454 event pairs, 0 based on Foata normal form. 19/261 useless extension candidates. Maximal degree in co-relation 178. Up to 5 conditions per place. [2023-11-10 12:14:27,027 INFO L140 encePairwiseOnDemand]: 269/283 looper letters, 4 selfloop transitions, 0 changer transitions 3/258 dead transitions. [2023-11-10 12:14:27,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 258 transitions, 536 flow [2023-11-10 12:14:27,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-10 12:14:27,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-10 12:14:27,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 546 transitions. [2023-11-10 12:14:27,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9646643109540636 [2023-11-10 12:14:27,041 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 546 transitions. [2023-11-10 12:14:27,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 546 transitions. [2023-11-10 12:14:27,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:14:27,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 546 transitions. [2023-11-10 12:14:27,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 273.0) internal successors, (546), 2 states have internal predecessors, (546), 0 states have call successors, (0), 0 states 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 12:14:27,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 283.0) internal successors, (849), 3 states have internal predecessors, (849), 0 states have call successors, (0), 0 states 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 12:14:27,055 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 283.0) internal successors, (849), 3 states have internal predecessors, (849), 0 states have call successors, (0), 0 states 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 12:14:27,056 INFO L175 Difference]: Start difference. First operand has 260 places, 272 transitions, 556 flow. Second operand 2 states and 546 transitions. [2023-11-10 12:14:27,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 258 transitions, 536 flow [2023-11-10 12:14:27,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 258 transitions, 528 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-10 12:14:27,066 INFO L231 Difference]: Finished difference. Result has 257 places, 255 transitions, 514 flow [2023-11-10 12:14:27,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=514, PETRI_PLACES=257, PETRI_TRANSITIONS=255} [2023-11-10 12:14:27,071 INFO L281 CegarLoopForPetriNet]: 260 programPoint places, -3 predicate places. [2023-11-10 12:14:27,071 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 255 transitions, 514 flow [2023-11-10 12:14:27,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 267.0) internal successors, (534), 2 states have internal predecessors, (534), 0 states have call successors, (0), 0 states 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 12:14:27,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:14:27,072 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] [2023-11-10 12:14:27,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-10 12:14:27,073 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:14:27,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:14:27,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1857057107, now seen corresponding path program 1 times [2023-11-10 12:14:27,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:14:27,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554632347] [2023-11-10 12:14:27,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:14:27,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:14:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:14:27,390 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 12:14:27,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:14:27,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554632347] [2023-11-10 12:14:27,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554632347] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:14:27,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:14:27,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-10 12:14:27,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226129455] [2023-11-10 12:14:27,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:14:27,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-10 12:14:27,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:14:27,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-10 12:14:27,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-10 12:14:27,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 283 [2023-11-10 12:14:27,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 255 transitions, 514 flow. Second operand has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 12:14:27,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:14:27,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 283 [2023-11-10 12:14:27,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:14:27,487 INFO L124 PetriNetUnfolderBase]: 5/262 cut-off events. [2023-11-10 12:14:27,487 INFO L125 PetriNetUnfolderBase]: For 2/3 co-relation queries the response was YES. [2023-11-10 12:14:27,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 262 events. 5/262 cut-off events. For 2/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 448 event pairs, 0 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 287. Up to 11 conditions per place. [2023-11-10 12:14:27,489 INFO L140 encePairwiseOnDemand]: 276/283 looper letters, 17 selfloop transitions, 6 changer transitions 0/259 dead transitions. [2023-11-10 12:14:27,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 259 transitions, 568 flow [2023-11-10 12:14:27,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-10 12:14:27,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-10 12:14:27,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1269 transitions. [2023-11-10 12:14:27,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8968197879858657 [2023-11-10 12:14:27,492 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1269 transitions. [2023-11-10 12:14:27,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1269 transitions. [2023-11-10 12:14:27,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:14:27,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1269 transitions. [2023-11-10 12:14:27,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 253.8) internal successors, (1269), 5 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states 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 12:14:27,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 283.0) internal successors, (1698), 6 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states 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 12:14:27,498 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 283.0) internal successors, (1698), 6 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states 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 12:14:27,499 INFO L175 Difference]: Start difference. First operand has 257 places, 255 transitions, 514 flow. Second operand 5 states and 1269 transitions. [2023-11-10 12:14:27,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 259 transitions, 568 flow [2023-11-10 12:14:27,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 259 transitions, 568 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-10 12:14:27,506 INFO L231 Difference]: Finished difference. Result has 259 places, 256 transitions, 534 flow [2023-11-10 12:14:27,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=534, PETRI_PLACES=259, PETRI_TRANSITIONS=256} [2023-11-10 12:14:27,507 INFO L281 CegarLoopForPetriNet]: 260 programPoint places, -1 predicate places. [2023-11-10 12:14:27,507 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 256 transitions, 534 flow [2023-11-10 12:14:27,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 12:14:27,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:14:27,509 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] [2023-11-10 12:14:27,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-10 12:14:27,510 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:14:27,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:14:27,511 INFO L85 PathProgramCache]: Analyzing trace with hash 2145824041, now seen corresponding path program 1 times [2023-11-10 12:14:27,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:14:27,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002767567] [2023-11-10 12:14:27,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:14:27,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:14:27,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:14:27,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:14:27,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:14:27,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002767567] [2023-11-10 12:14:27,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002767567] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:14:27,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418806877] [2023-11-10 12:14:27,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:14:27,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:14:27,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:14:27,778 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 12:14:27,780 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 12:14:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:14:27,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-10 12:14:27,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:14:28,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:14:28,069 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:14:28,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:14:28,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418806877] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:14:28,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:14:28,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-11-10 12:14:28,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352983615] [2023-11-10 12:14:28,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:14:28,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-10 12:14:28,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:14:28,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-10 12:14:28,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-10 12:14:28,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 283 [2023-11-10 12:14:28,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 256 transitions, 534 flow. Second operand has 14 states, 14 states have (on average 250.85714285714286) internal successors, (3512), 14 states have internal predecessors, (3512), 0 states have call successors, (0), 0 states 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 12:14:28,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:14:28,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 283 [2023-11-10 12:14:28,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:14:28,357 INFO L124 PetriNetUnfolderBase]: 5/272 cut-off events. [2023-11-10 12:14:28,357 INFO L125 PetriNetUnfolderBase]: For 7/8 co-relation queries the response was YES. [2023-11-10 12:14:28,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 272 events. 5/272 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 437 event pairs, 0 based on Foata normal form. 2/262 useless extension candidates. Maximal degree in co-relation 315. Up to 8 conditions per place. [2023-11-10 12:14:28,359 INFO L140 encePairwiseOnDemand]: 273/283 looper letters, 18 selfloop transitions, 13 changer transitions 0/266 dead transitions. [2023-11-10 12:14:28,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 266 transitions, 618 flow [2023-11-10 12:14:28,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-10 12:14:28,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-10 12:14:28,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2761 transitions. [2023-11-10 12:14:28,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8869257950530035 [2023-11-10 12:14:28,364 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2761 transitions. [2023-11-10 12:14:28,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2761 transitions. [2023-11-10 12:14:28,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:14:28,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2761 transitions. [2023-11-10 12:14:28,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 251.0) internal successors, (2761), 11 states have internal predecessors, (2761), 0 states have call successors, (0), 0 states 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 12:14:28,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 283.0) internal successors, (3396), 12 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states 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 12:14:28,374 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 283.0) internal successors, (3396), 12 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states 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 12:14:28,374 INFO L175 Difference]: Start difference. First operand has 259 places, 256 transitions, 534 flow. Second operand 11 states and 2761 transitions. [2023-11-10 12:14:28,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 266 transitions, 618 flow [2023-11-10 12:14:28,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 266 transitions, 608 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-10 12:14:28,378 INFO L231 Difference]: Finished difference. Result has 269 places, 262 transitions, 584 flow [2023-11-10 12:14:28,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=584, PETRI_PLACES=269, PETRI_TRANSITIONS=262} [2023-11-10 12:14:28,380 INFO L281 CegarLoopForPetriNet]: 260 programPoint places, 9 predicate places. [2023-11-10 12:14:28,380 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 262 transitions, 584 flow [2023-11-10 12:14:28,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 250.85714285714286) internal successors, (3512), 14 states have internal predecessors, (3512), 0 states have call successors, (0), 0 states 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 12:14:28,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:14:28,383 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:14:28,402 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 12:14:28,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:14:28,590 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:14:28,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:14:28,591 INFO L85 PathProgramCache]: Analyzing trace with hash -636821261, now seen corresponding path program 2 times [2023-11-10 12:14:28,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:14:28,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742830351] [2023-11-10 12:14:28,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:14:28,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:14:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:14:29,066 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-10 12:14:29,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:14:29,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742830351] [2023-11-10 12:14:29,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742830351] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:14:29,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:14:29,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-10 12:14:29,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261805787] [2023-11-10 12:14:29,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:14:29,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-10 12:14:29,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:14:29,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-10 12:14:29,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-10 12:14:29,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 283 [2023-11-10 12:14:29,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 262 transitions, 584 flow. Second operand has 10 states, 10 states have (on average 210.5) internal successors, (2105), 10 states have internal predecessors, (2105), 0 states have call successors, (0), 0 states 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 12:14:29,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:14:29,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 283 [2023-11-10 12:14:29,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:14:29,618 INFO L124 PetriNetUnfolderBase]: 392/2475 cut-off events. [2023-11-10 12:14:29,618 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-11-10 12:14:29,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3339 conditions, 2475 events. 392/2475 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 20458 event pairs, 120 based on Foata normal form. 1/2253 useless extension candidates. Maximal degree in co-relation 3331. Up to 312 conditions per place. [2023-11-10 12:14:29,628 INFO L140 encePairwiseOnDemand]: 264/283 looper letters, 139 selfloop transitions, 20 changer transitions 15/377 dead transitions. [2023-11-10 12:14:29,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 377 transitions, 1172 flow [2023-11-10 12:14:29,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-10 12:14:29,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-10 12:14:29,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2853 transitions. [2023-11-10 12:14:29,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7754824680619734 [2023-11-10 12:14:29,633 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2853 transitions. [2023-11-10 12:14:29,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2853 transitions. [2023-11-10 12:14:29,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:14:29,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2853 transitions. [2023-11-10 12:14:29,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 219.46153846153845) internal successors, (2853), 13 states have internal predecessors, (2853), 0 states have call successors, (0), 0 states 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 12:14:29,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 283.0) internal successors, (3962), 14 states have internal predecessors, (3962), 0 states have call successors, (0), 0 states 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 12:14:29,642 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 283.0) internal successors, (3962), 14 states have internal predecessors, (3962), 0 states have call successors, (0), 0 states 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 12:14:29,642 INFO L175 Difference]: Start difference. First operand has 269 places, 262 transitions, 584 flow. Second operand 13 states and 2853 transitions. [2023-11-10 12:14:29,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 377 transitions, 1172 flow [2023-11-10 12:14:29,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 377 transitions, 1160 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-10 12:14:29,647 INFO L231 Difference]: Finished difference. Result has 288 places, 276 transitions, 709 flow [2023-11-10 12:14:29,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=709, PETRI_PLACES=288, PETRI_TRANSITIONS=276} [2023-11-10 12:14:29,648 INFO L281 CegarLoopForPetriNet]: 260 programPoint places, 28 predicate places. [2023-11-10 12:14:29,648 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 276 transitions, 709 flow [2023-11-10 12:14:29,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 210.5) internal successors, (2105), 10 states have internal predecessors, (2105), 0 states have call successors, (0), 0 states 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 12:14:29,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:14:29,649 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:14:29,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-10 12:14:29,649 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:14:29,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:14:29,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1737616219, now seen corresponding path program 3 times [2023-11-10 12:14:29,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:14:29,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720054117] [2023-11-10 12:14:29,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:14:29,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:14:29,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:14:29,972 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-10 12:14:29,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:14:29,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720054117] [2023-11-10 12:14:29,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720054117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:14:29,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:14:29,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-10 12:14:29,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672710313] [2023-11-10 12:14:29,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:14:29,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-10 12:14:29,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:14:29,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-10 12:14:29,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-10 12:14:29,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 283 [2023-11-10 12:14:29,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 276 transitions, 709 flow. Second operand has 10 states, 10 states have (on average 210.5) internal successors, (2105), 10 states have internal predecessors, (2105), 0 states have call successors, (0), 0 states 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 12:14:29,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:14:29,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 283 [2023-11-10 12:14:29,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:14:30,736 INFO L124 PetriNetUnfolderBase]: 732/4389 cut-off events. [2023-11-10 12:14:30,737 INFO L125 PetriNetUnfolderBase]: For 1277/1303 co-relation queries the response was YES. [2023-11-10 12:14:30,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7396 conditions, 4389 events. 732/4389 cut-off events. For 1277/1303 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 41374 event pairs, 300 based on Foata normal form. 12/3991 useless extension candidates. Maximal degree in co-relation 7378. Up to 534 conditions per place. [2023-11-10 12:14:30,769 INFO L140 encePairwiseOnDemand]: 264/283 looper letters, 170 selfloop transitions, 26 changer transitions 16/417 dead transitions. [2023-11-10 12:14:30,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 417 transitions, 1716 flow [2023-11-10 12:14:30,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-10 12:14:30,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-10 12:14:30,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2855 transitions. [2023-11-10 12:14:30,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7760260940472955 [2023-11-10 12:14:30,775 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2855 transitions. [2023-11-10 12:14:30,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2855 transitions. [2023-11-10 12:14:30,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:14:30,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2855 transitions. [2023-11-10 12:14:30,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 219.6153846153846) internal successors, (2855), 13 states have internal predecessors, (2855), 0 states have call successors, (0), 0 states 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 12:14:30,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 283.0) internal successors, (3962), 14 states have internal predecessors, (3962), 0 states have call successors, (0), 0 states 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 12:14:30,785 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 283.0) internal successors, (3962), 14 states have internal predecessors, (3962), 0 states have call successors, (0), 0 states 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 12:14:30,785 INFO L175 Difference]: Start difference. First operand has 288 places, 276 transitions, 709 flow. Second operand 13 states and 2855 transitions. [2023-11-10 12:14:30,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 417 transitions, 1716 flow [2023-11-10 12:14:30,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 417 transitions, 1666 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-11-10 12:14:30,795 INFO L231 Difference]: Finished difference. Result has 302 places, 290 transitions, 884 flow [2023-11-10 12:14:30,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=884, PETRI_PLACES=302, PETRI_TRANSITIONS=290} [2023-11-10 12:14:30,796 INFO L281 CegarLoopForPetriNet]: 260 programPoint places, 42 predicate places. [2023-11-10 12:14:30,797 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 290 transitions, 884 flow [2023-11-10 12:14:30,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 210.5) internal successors, (2105), 10 states have internal predecessors, (2105), 0 states have call successors, (0), 0 states 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 12:14:30,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:14:30,798 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:14:30,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-10 12:14:30,798 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:14:30,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:14:30,798 INFO L85 PathProgramCache]: Analyzing trace with hash 702799937, now seen corresponding path program 4 times [2023-11-10 12:14:30,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:14:30,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192986890] [2023-11-10 12:14:30,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:14:30,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:14:30,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:14:31,162 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-10 12:14:31,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:14:31,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192986890] [2023-11-10 12:14:31,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192986890] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:14:31,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:14:31,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-10 12:14:31,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709358726] [2023-11-10 12:14:31,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:14:31,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-10 12:14:31,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:14:31,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-10 12:14:31,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-10 12:14:31,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 283 [2023-11-10 12:14:31,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 290 transitions, 884 flow. Second operand has 11 states, 11 states have (on average 210.0909090909091) internal successors, (2311), 11 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states 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 12:14:31,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:14:31,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 283 [2023-11-10 12:14:31,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:14:32,164 INFO L124 PetriNetUnfolderBase]: 1043/6590 cut-off events. [2023-11-10 12:14:32,165 INFO L125 PetriNetUnfolderBase]: For 5184/5235 co-relation queries the response was YES. [2023-11-10 12:14:32,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12194 conditions, 6590 events. 1043/6590 cut-off events. For 5184/5235 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 69013 event pairs, 301 based on Foata normal form. 20/6010 useless extension candidates. Maximal degree in co-relation 12168. Up to 1262 conditions per place. [2023-11-10 12:14:32,214 INFO L140 encePairwiseOnDemand]: 260/283 looper letters, 142 selfloop transitions, 67 changer transitions 17/431 dead transitions. [2023-11-10 12:14:32,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 431 transitions, 2196 flow [2023-11-10 12:14:32,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-10 12:14:32,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-10 12:14:32,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3050 transitions. [2023-11-10 12:14:32,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7698132256436143 [2023-11-10 12:14:32,219 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3050 transitions. [2023-11-10 12:14:32,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3050 transitions. [2023-11-10 12:14:32,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:14:32,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3050 transitions. [2023-11-10 12:14:32,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 217.85714285714286) internal successors, (3050), 14 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states 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 12:14:32,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 283.0) internal successors, (4245), 15 states have internal predecessors, (4245), 0 states have call successors, (0), 0 states 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 12:14:32,230 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 283.0) internal successors, (4245), 15 states have internal predecessors, (4245), 0 states have call successors, (0), 0 states 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 12:14:32,230 INFO L175 Difference]: Start difference. First operand has 302 places, 290 transitions, 884 flow. Second operand 14 states and 3050 transitions. [2023-11-10 12:14:32,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 431 transitions, 2196 flow [2023-11-10 12:14:32,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 431 transitions, 2135 flow, removed 22 selfloop flow, removed 4 redundant places. [2023-11-10 12:14:32,247 INFO L231 Difference]: Finished difference. Result has 318 places, 342 transitions, 1517 flow [2023-11-10 12:14:32,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1517, PETRI_PLACES=318, PETRI_TRANSITIONS=342} [2023-11-10 12:14:32,248 INFO L281 CegarLoopForPetriNet]: 260 programPoint places, 58 predicate places. [2023-11-10 12:14:32,248 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 342 transitions, 1517 flow [2023-11-10 12:14:32,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 210.0909090909091) internal successors, (2311), 11 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states 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 12:14:32,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:14:32,249 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:14:32,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-10 12:14:32,250 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:14:32,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:14:32,250 INFO L85 PathProgramCache]: Analyzing trace with hash -855420455, now seen corresponding path program 5 times [2023-11-10 12:14:32,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:14:32,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111357995] [2023-11-10 12:14:32,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:14:32,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:14:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:14:32,535 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-10 12:14:32,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:14:32,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111357995] [2023-11-10 12:14:32,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111357995] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:14:32,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:14:32,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-10 12:14:32,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303256712] [2023-11-10 12:14:32,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:14:32,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-10 12:14:32,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:14:32,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-10 12:14:32,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-10 12:14:32,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 283 [2023-11-10 12:14:32,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 342 transitions, 1517 flow. Second operand has 10 states, 10 states have (on average 210.5) internal successors, (2105), 10 states have internal predecessors, (2105), 0 states have call successors, (0), 0 states 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 12:14:32,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:14:32,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 283 [2023-11-10 12:14:32,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:14:33,793 INFO L124 PetriNetUnfolderBase]: 1252/7915 cut-off events. [2023-11-10 12:14:33,794 INFO L125 PetriNetUnfolderBase]: For 10462/10619 co-relation queries the response was YES. [2023-11-10 12:14:33,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16251 conditions, 7915 events. 1252/7915 cut-off events. For 10462/10619 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 86162 event pairs, 398 based on Foata normal form. 43/7224 useless extension candidates. Maximal degree in co-relation 16216. Up to 1007 conditions per place. [2023-11-10 12:14:33,861 INFO L140 encePairwiseOnDemand]: 264/283 looper letters, 195 selfloop transitions, 83 changer transitions 20/508 dead transitions. [2023-11-10 12:14:33,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 508 transitions, 3443 flow [2023-11-10 12:14:33,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-10 12:14:33,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-10 12:14:33,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2638 transitions. [2023-11-10 12:14:33,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7767962308598351 [2023-11-10 12:14:33,869 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2638 transitions. [2023-11-10 12:14:33,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2638 transitions. [2023-11-10 12:14:33,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:14:33,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2638 transitions. [2023-11-10 12:14:33,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 219.83333333333334) internal successors, (2638), 12 states have internal predecessors, (2638), 0 states have call successors, (0), 0 states 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 12:14:33,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 283.0) internal successors, (3679), 13 states have internal predecessors, (3679), 0 states have call successors, (0), 0 states 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 12:14:33,886 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 283.0) internal successors, (3679), 13 states have internal predecessors, (3679), 0 states have call successors, (0), 0 states 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 12:14:33,886 INFO L175 Difference]: Start difference. First operand has 318 places, 342 transitions, 1517 flow. Second operand 12 states and 2638 transitions. [2023-11-10 12:14:33,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 508 transitions, 3443 flow [2023-11-10 12:14:33,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 508 transitions, 3355 flow, removed 44 selfloop flow, removed 2 redundant places. [2023-11-10 12:14:33,955 INFO L231 Difference]: Finished difference. Result has 331 places, 389 transitions, 2338 flow [2023-11-10 12:14:33,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=1475, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2338, PETRI_PLACES=331, PETRI_TRANSITIONS=389} [2023-11-10 12:14:33,957 INFO L281 CegarLoopForPetriNet]: 260 programPoint places, 71 predicate places. [2023-11-10 12:14:33,957 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 389 transitions, 2338 flow [2023-11-10 12:14:33,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 210.5) internal successors, (2105), 10 states have internal predecessors, (2105), 0 states have call successors, (0), 0 states 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 12:14:33,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:14:33,960 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:14:33,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-10 12:14:33,960 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:14:33,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:14:33,961 INFO L85 PathProgramCache]: Analyzing trace with hash -2061950795, now seen corresponding path program 6 times [2023-11-10 12:14:33,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:14:33,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358430068] [2023-11-10 12:14:33,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:14:33,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:14:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:14:34,385 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-10 12:14:34,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:14:34,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358430068] [2023-11-10 12:14:34,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358430068] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:14:34,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:14:34,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-10 12:14:34,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53069619] [2023-11-10 12:14:34,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:14:34,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-10 12:14:34,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:14:34,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-10 12:14:34,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-10 12:14:34,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 283 [2023-11-10 12:14:34,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 389 transitions, 2338 flow. Second operand has 11 states, 11 states have (on average 210.0909090909091) internal successors, (2311), 11 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states 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 12:14:34,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:14:34,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 283 [2023-11-10 12:14:34,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:14:36,231 INFO L124 PetriNetUnfolderBase]: 1363/8823 cut-off events. [2023-11-10 12:14:36,231 INFO L125 PetriNetUnfolderBase]: For 19639/19870 co-relation queries the response was YES. [2023-11-10 12:14:36,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19784 conditions, 8823 events. 1363/8823 cut-off events. For 19639/19870 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 99847 event pairs, 441 based on Foata normal form. 74/8131 useless extension candidates. Maximal degree in co-relation 19742. Up to 1004 conditions per place. [2023-11-10 12:14:36,286 INFO L140 encePairwiseOnDemand]: 264/283 looper letters, 197 selfloop transitions, 121 changer transitions 20/548 dead transitions. [2023-11-10 12:14:36,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 548 transitions, 4470 flow [2023-11-10 12:14:36,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-10 12:14:36,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-10 12:14:36,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2854 transitions. [2023-11-10 12:14:36,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7757542810546344 [2023-11-10 12:14:36,291 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2854 transitions. [2023-11-10 12:14:36,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2854 transitions. [2023-11-10 12:14:36,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:14:36,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2854 transitions. [2023-11-10 12:14:36,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 219.53846153846155) internal successors, (2854), 13 states have internal predecessors, (2854), 0 states have call successors, (0), 0 states 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 12:14:36,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 283.0) internal successors, (3962), 14 states have internal predecessors, (3962), 0 states have call successors, (0), 0 states 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 12:14:36,300 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 283.0) internal successors, (3962), 14 states have internal predecessors, (3962), 0 states have call successors, (0), 0 states 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 12:14:36,300 INFO L175 Difference]: Start difference. First operand has 331 places, 389 transitions, 2338 flow. Second operand 13 states and 2854 transitions. [2023-11-10 12:14:36,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 548 transitions, 4470 flow [2023-11-10 12:14:36,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 548 transitions, 4136 flow, removed 113 selfloop flow, removed 8 redundant places. [2023-11-10 12:14:36,349 INFO L231 Difference]: Finished difference. Result has 341 places, 426 transitions, 3087 flow [2023-11-10 12:14:36,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=2102, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3087, PETRI_PLACES=341, PETRI_TRANSITIONS=426} [2023-11-10 12:14:36,350 INFO L281 CegarLoopForPetriNet]: 260 programPoint places, 81 predicate places. [2023-11-10 12:14:36,350 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 426 transitions, 3087 flow [2023-11-10 12:14:36,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 210.0909090909091) internal successors, (2311), 11 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states 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 12:14:36,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:14:36,351 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:14:36,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-10 12:14:36,351 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:14:36,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:14:36,352 INFO L85 PathProgramCache]: Analyzing trace with hash -144136311, now seen corresponding path program 7 times [2023-11-10 12:14:36,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:14:36,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129735507] [2023-11-10 12:14:36,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:14:36,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:14:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:14:36,712 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-10 12:14:36,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:14:36,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129735507] [2023-11-10 12:14:36,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129735507] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:14:36,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:14:36,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-10 12:14:36,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230526735] [2023-11-10 12:14:36,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:14:36,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-10 12:14:36,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:14:36,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-10 12:14:36,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-10 12:14:36,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 283 [2023-11-10 12:14:36,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 426 transitions, 3087 flow. Second operand has 11 states, 11 states have (on average 210.0909090909091) internal successors, (2311), 11 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states 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 12:14:36,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:14:36,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 283 [2023-11-10 12:14:36,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:14:38,508 INFO L124 PetriNetUnfolderBase]: 1630/10281 cut-off events. [2023-11-10 12:14:38,508 INFO L125 PetriNetUnfolderBase]: For 37428/37819 co-relation queries the response was YES. [2023-11-10 12:14:38,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25092 conditions, 10281 events. 1630/10281 cut-off events. For 37428/37819 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 120721 event pairs, 569 based on Foata normal form. 81/9423 useless extension candidates. Maximal degree in co-relation 25045. Up to 1794 conditions per place. [2023-11-10 12:14:38,584 INFO L140 encePairwiseOnDemand]: 261/283 looper letters, 276 selfloop transitions, 86 changer transitions 16/588 dead transitions. [2023-11-10 12:14:38,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 588 transitions, 5713 flow [2023-11-10 12:14:38,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-10 12:14:38,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-10 12:14:38,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2838 transitions. [2023-11-10 12:14:38,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7714052731720576 [2023-11-10 12:14:38,589 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2838 transitions. [2023-11-10 12:14:38,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2838 transitions. [2023-11-10 12:14:38,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:14:38,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2838 transitions. [2023-11-10 12:14:38,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 218.30769230769232) internal successors, (2838), 13 states have internal predecessors, (2838), 0 states have call successors, (0), 0 states 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 12:14:38,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 283.0) internal successors, (3962), 14 states have internal predecessors, (3962), 0 states have call successors, (0), 0 states 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 12:14:38,663 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 283.0) internal successors, (3962), 14 states have internal predecessors, (3962), 0 states have call successors, (0), 0 states 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 12:14:38,663 INFO L175 Difference]: Start difference. First operand has 341 places, 426 transitions, 3087 flow. Second operand 13 states and 2838 transitions. [2023-11-10 12:14:38,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 588 transitions, 5713 flow [2023-11-10 12:14:38,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 588 transitions, 5420 flow, removed 107 selfloop flow, removed 6 redundant places. [2023-11-10 12:14:38,733 INFO L231 Difference]: Finished difference. Result has 354 places, 485 transitions, 4260 flow [2023-11-10 12:14:38,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=2878, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4260, PETRI_PLACES=354, PETRI_TRANSITIONS=485} [2023-11-10 12:14:38,735 INFO L281 CegarLoopForPetriNet]: 260 programPoint places, 94 predicate places. [2023-11-10 12:14:38,735 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 485 transitions, 4260 flow [2023-11-10 12:14:38,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 210.0909090909091) internal successors, (2311), 11 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states 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 12:14:38,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:14:38,736 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:14:38,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-10 12:14:38,736 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:14:38,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:14:38,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1588136889, now seen corresponding path program 8 times [2023-11-10 12:14:38,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:14:38,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65108293] [2023-11-10 12:14:38,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:14:38,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:14:38,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:14:38,980 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-10 12:14:38,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:14:38,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65108293] [2023-11-10 12:14:38,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65108293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:14:38,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:14:38,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-10 12:14:38,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231437905] [2023-11-10 12:14:38,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:14:38,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-10 12:14:38,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:14:38,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-10 12:14:38,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-10 12:14:38,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 283 [2023-11-10 12:14:38,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 485 transitions, 4260 flow. Second operand has 10 states, 10 states have (on average 210.5) internal successors, (2105), 10 states have internal predecessors, (2105), 0 states have call successors, (0), 0 states 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 12:14:38,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:14:38,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 283 [2023-11-10 12:14:38,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:14:40,871 INFO L124 PetriNetUnfolderBase]: 1753/11011 cut-off events. [2023-11-10 12:14:40,871 INFO L125 PetriNetUnfolderBase]: For 44496/44926 co-relation queries the response was YES. [2023-11-10 12:14:40,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27492 conditions, 11011 events. 1753/11011 cut-off events. For 44496/44926 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 130365 event pairs, 520 based on Foata normal form. 146/10172 useless extension candidates. Maximal degree in co-relation 27438. Up to 1038 conditions per place. [2023-11-10 12:14:40,949 INFO L140 encePairwiseOnDemand]: 264/283 looper letters, 264 selfloop transitions, 173 changer transitions 12/660 dead transitions. [2023-11-10 12:14:40,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 660 transitions, 7357 flow [2023-11-10 12:14:40,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-10 12:14:40,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-10 12:14:40,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2428 transitions. [2023-11-10 12:14:40,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7799550273048507 [2023-11-10 12:14:40,954 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2428 transitions. [2023-11-10 12:14:40,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2428 transitions. [2023-11-10 12:14:40,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:14:40,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2428 transitions. [2023-11-10 12:14:40,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 220.72727272727272) internal successors, (2428), 11 states have internal predecessors, (2428), 0 states have call successors, (0), 0 states 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 12:14:40,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 283.0) internal successors, (3396), 12 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states 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 12:14:40,961 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 283.0) internal successors, (3396), 12 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states 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 12:14:40,961 INFO L175 Difference]: Start difference. First operand has 354 places, 485 transitions, 4260 flow. Second operand 11 states and 2428 transitions. [2023-11-10 12:14:40,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 660 transitions, 7357 flow [2023-11-10 12:14:41,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 660 transitions, 6865 flow, removed 246 selfloop flow, removed 4 redundant places. [2023-11-10 12:14:41,055 INFO L231 Difference]: Finished difference. Result has 363 places, 530 transitions, 5325 flow [2023-11-10 12:14:41,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=4026, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5325, PETRI_PLACES=363, PETRI_TRANSITIONS=530} [2023-11-10 12:14:41,056 INFO L281 CegarLoopForPetriNet]: 260 programPoint places, 103 predicate places. [2023-11-10 12:14:41,056 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 530 transitions, 5325 flow [2023-11-10 12:14:41,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 210.5) internal successors, (2105), 10 states have internal predecessors, (2105), 0 states have call successors, (0), 0 states 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 12:14:41,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:14:41,057 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:14:41,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-10 12:14:41,057 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:14:41,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:14:41,057 INFO L85 PathProgramCache]: Analyzing trace with hash -521380715, now seen corresponding path program 9 times [2023-11-10 12:14:41,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:14:41,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917951733] [2023-11-10 12:14:41,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:14:41,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:14:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:14:41,357 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-10 12:14:41,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:14:41,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917951733] [2023-11-10 12:14:41,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917951733] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:14:41,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:14:41,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-10 12:14:41,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864721067] [2023-11-10 12:14:41,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:14:41,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-10 12:14:41,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:14:41,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-10 12:14:41,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-10 12:14:41,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 283 [2023-11-10 12:14:41,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 530 transitions, 5325 flow. Second operand has 11 states, 11 states have (on average 210.0909090909091) internal successors, (2311), 11 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states 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 12:14:41,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:14:41,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 283 [2023-11-10 12:14:41,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:14:43,381 INFO L124 PetriNetUnfolderBase]: 1816/11215 cut-off events. [2023-11-10 12:14:43,381 INFO L125 PetriNetUnfolderBase]: For 50669/51096 co-relation queries the response was YES. [2023-11-10 12:14:43,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29353 conditions, 11215 events. 1816/11215 cut-off events. For 50669/51096 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 134230 event pairs, 645 based on Foata normal form. 134/10329 useless extension candidates. Maximal degree in co-relation 29295. Up to 1719 conditions per place. [2023-11-10 12:14:43,465 INFO L140 encePairwiseOnDemand]: 263/283 looper letters, 360 selfloop transitions, 95 changer transitions 37/703 dead transitions. [2023-11-10 12:14:43,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 703 transitions, 8473 flow [2023-11-10 12:14:43,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-10 12:14:43,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-10 12:14:43,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2834 transitions. [2023-11-10 12:14:43,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7703180212014135 [2023-11-10 12:14:43,469 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2834 transitions. [2023-11-10 12:14:43,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2834 transitions. [2023-11-10 12:14:43,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:14:43,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2834 transitions. [2023-11-10 12:14:43,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 218.0) internal successors, (2834), 13 states have internal predecessors, (2834), 0 states have call successors, (0), 0 states 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 12:14:43,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 283.0) internal successors, (3962), 14 states have internal predecessors, (3962), 0 states have call successors, (0), 0 states 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 12:14:43,476 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 283.0) internal successors, (3962), 14 states have internal predecessors, (3962), 0 states have call successors, (0), 0 states 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 12:14:43,476 INFO L175 Difference]: Start difference. First operand has 363 places, 530 transitions, 5325 flow. Second operand 13 states and 2834 transitions. [2023-11-10 12:14:43,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 703 transitions, 8473 flow [2023-11-10 12:14:43,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 703 transitions, 7887 flow, removed 171 selfloop flow, removed 6 redundant places. [2023-11-10 12:14:43,583 INFO L231 Difference]: Finished difference. Result has 377 places, 561 transitions, 5737 flow [2023-11-10 12:14:43,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=4853, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5737, PETRI_PLACES=377, PETRI_TRANSITIONS=561} [2023-11-10 12:14:43,584 INFO L281 CegarLoopForPetriNet]: 260 programPoint places, 117 predicate places. [2023-11-10 12:14:43,584 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 561 transitions, 5737 flow [2023-11-10 12:14:43,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 210.0909090909091) internal successors, (2311), 11 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states 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 12:14:43,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:14:43,585 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:14:43,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-10 12:14:43,585 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:14:43,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:14:43,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1056875289, now seen corresponding path program 10 times [2023-11-10 12:14:43,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:14:43,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005805815] [2023-11-10 12:14:43,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:14:43,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:14:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:14:43,818 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-10 12:14:43,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:14:43,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005805815] [2023-11-10 12:14:43,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005805815] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:14:43,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:14:43,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-10 12:14:43,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001662538] [2023-11-10 12:14:43,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:14:43,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-10 12:14:43,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:14:43,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-10 12:14:43,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-10 12:14:43,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 283 [2023-11-10 12:14:43,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 561 transitions, 5737 flow. Second operand has 10 states, 10 states have (on average 210.5) internal successors, (2105), 10 states have internal predecessors, (2105), 0 states have call successors, (0), 0 states 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 12:14:43,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:14:43,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 283 [2023-11-10 12:14:43,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:14:46,006 INFO L124 PetriNetUnfolderBase]: 1799/11471 cut-off events. [2023-11-10 12:14:46,007 INFO L125 PetriNetUnfolderBase]: For 54798/55368 co-relation queries the response was YES. [2023-11-10 12:14:46,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29751 conditions, 11471 events. 1799/11471 cut-off events. For 54798/55368 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 137638 event pairs, 555 based on Foata normal form. 171/10602 useless extension candidates. Maximal degree in co-relation 29686. Up to 1018 conditions per place. [2023-11-10 12:14:46,099 INFO L140 encePairwiseOnDemand]: 264/283 looper letters, 285 selfloop transitions, 171 changer transitions 29/696 dead transitions. [2023-11-10 12:14:46,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 696 transitions, 8228 flow [2023-11-10 12:14:46,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-10 12:14:46,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-10 12:14:46,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2636 transitions. [2023-11-10 12:14:46,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7762073027090695 [2023-11-10 12:14:46,102 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2636 transitions. [2023-11-10 12:14:46,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2636 transitions. [2023-11-10 12:14:46,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:14:46,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2636 transitions. [2023-11-10 12:14:46,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 219.66666666666666) internal successors, (2636), 12 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states 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 12:14:46,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 283.0) internal successors, (3679), 13 states have internal predecessors, (3679), 0 states have call successors, (0), 0 states 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 12:14:46,107 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 283.0) internal successors, (3679), 13 states have internal predecessors, (3679), 0 states have call successors, (0), 0 states 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 12:14:46,108 INFO L175 Difference]: Start difference. First operand has 377 places, 561 transitions, 5737 flow. Second operand 12 states and 2636 transitions. [2023-11-10 12:14:46,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 696 transitions, 8228 flow [2023-11-10 12:14:46,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 696 transitions, 8034 flow, removed 97 selfloop flow, removed 4 redundant places. [2023-11-10 12:14:46,249 INFO L231 Difference]: Finished difference. Result has 386 places, 555 transitions, 5899 flow [2023-11-10 12:14:46,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=5595, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5899, PETRI_PLACES=386, PETRI_TRANSITIONS=555} [2023-11-10 12:14:46,250 INFO L281 CegarLoopForPetriNet]: 260 programPoint places, 126 predicate places. [2023-11-10 12:14:46,250 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 555 transitions, 5899 flow [2023-11-10 12:14:46,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 210.5) internal successors, (2105), 10 states have internal predecessors, (2105), 0 states have call successors, (0), 0 states 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 12:14:46,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:14:46,251 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:14:46,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-10 12:14:46,251 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:14:46,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:14:46,251 INFO L85 PathProgramCache]: Analyzing trace with hash -175907671, now seen corresponding path program 11 times [2023-11-10 12:14:46,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:14:46,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294458720] [2023-11-10 12:14:46,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:14:46,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:14:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:14:46,498 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-10 12:14:46,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:14:46,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294458720] [2023-11-10 12:14:46,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294458720] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:14:46,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:14:46,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-10 12:14:46,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92124950] [2023-11-10 12:14:46,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:14:46,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-10 12:14:46,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:14:46,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-10 12:14:46,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-10 12:14:46,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 283 [2023-11-10 12:14:46,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 555 transitions, 5899 flow. Second operand has 11 states, 11 states have (on average 210.0909090909091) internal successors, (2311), 11 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states 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 12:14:46,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:14:46,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 283 [2023-11-10 12:14:46,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:14:48,811 INFO L124 PetriNetUnfolderBase]: 1803/11567 cut-off events. [2023-11-10 12:14:48,811 INFO L125 PetriNetUnfolderBase]: For 60203/60742 co-relation queries the response was YES. [2023-11-10 12:14:48,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30712 conditions, 11567 events. 1803/11567 cut-off events. For 60203/60742 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 139076 event pairs, 529 based on Foata normal form. 168/10695 useless extension candidates. Maximal degree in co-relation 30644. Up to 981 conditions per place. [2023-11-10 12:14:48,930 INFO L140 encePairwiseOnDemand]: 264/283 looper letters, 267 selfloop transitions, 206 changer transitions 21/705 dead transitions. [2023-11-10 12:14:48,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 705 transitions, 8703 flow [2023-11-10 12:14:48,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-10 12:14:48,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-10 12:14:48,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2852 transitions. [2023-11-10 12:14:48,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7752106550693123 [2023-11-10 12:14:48,933 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2852 transitions. [2023-11-10 12:14:48,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2852 transitions. [2023-11-10 12:14:48,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:14:48,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2852 transitions. [2023-11-10 12:14:48,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 219.3846153846154) internal successors, (2852), 13 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states 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 12:14:48,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 283.0) internal successors, (3962), 14 states have internal predecessors, (3962), 0 states have call successors, (0), 0 states 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 12:14:48,939 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 283.0) internal successors, (3962), 14 states have internal predecessors, (3962), 0 states have call successors, (0), 0 states 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 12:14:48,940 INFO L175 Difference]: Start difference. First operand has 386 places, 555 transitions, 5899 flow. Second operand 13 states and 2852 transitions. [2023-11-10 12:14:48,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 705 transitions, 8703 flow [2023-11-10 12:14:49,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 705 transitions, 8079 flow, removed 71 selfloop flow, removed 14 redundant places. [2023-11-10 12:14:49,129 INFO L231 Difference]: Finished difference. Result has 389 places, 582 transitions, 6703 flow [2023-11-10 12:14:49,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=5399, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6703, PETRI_PLACES=389, PETRI_TRANSITIONS=582} [2023-11-10 12:14:49,130 INFO L281 CegarLoopForPetriNet]: 260 programPoint places, 129 predicate places. [2023-11-10 12:14:49,131 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 582 transitions, 6703 flow [2023-11-10 12:14:49,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 210.0909090909091) internal successors, (2311), 11 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states 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 12:14:49,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:14:49,132 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:14:49,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-10 12:14:49,132 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:14:49,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:14:49,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1589764811, now seen corresponding path program 12 times [2023-11-10 12:14:49,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:14:49,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953323561] [2023-11-10 12:14:49,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:14:49,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:14:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:14:49,483 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-10 12:14:49,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:14:49,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953323561] [2023-11-10 12:14:49,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953323561] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:14:49,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:14:49,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-10 12:14:49,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813388759] [2023-11-10 12:14:49,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:14:49,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-10 12:14:49,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:14:49,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-10 12:14:49,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-10 12:14:49,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 283 [2023-11-10 12:14:49,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 582 transitions, 6703 flow. Second operand has 11 states, 11 states have (on average 210.0909090909091) internal successors, (2311), 11 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states 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 12:14:49,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:14:49,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 283 [2023-11-10 12:14:49,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:14:52,198 INFO L124 PetriNetUnfolderBase]: 1999/13602 cut-off events. [2023-11-10 12:14:52,198 INFO L125 PetriNetUnfolderBase]: For 71175/71790 co-relation queries the response was YES. [2023-11-10 12:14:52,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35427 conditions, 13602 events. 1999/13602 cut-off events. For 71175/71790 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 170472 event pairs, 613 based on Foata normal form. 192/12595 useless extension candidates. Maximal degree in co-relation 35356. Up to 2015 conditions per place. [2023-11-10 12:14:52,306 INFO L140 encePairwiseOnDemand]: 260/283 looper letters, 281 selfloop transitions, 275 changer transitions 36/807 dead transitions. [2023-11-10 12:14:52,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 807 transitions, 11363 flow [2023-11-10 12:14:52,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-10 12:14:52,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-10 12:14:52,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3050 transitions. [2023-11-10 12:14:52,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7698132256436143 [2023-11-10 12:14:52,309 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3050 transitions. [2023-11-10 12:14:52,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3050 transitions. [2023-11-10 12:14:52,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:14:52,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3050 transitions. [2023-11-10 12:14:52,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 217.85714285714286) internal successors, (3050), 14 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states 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 12:14:52,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 283.0) internal successors, (4245), 15 states have internal predecessors, (4245), 0 states have call successors, (0), 0 states 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 12:14:52,316 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 283.0) internal successors, (4245), 15 states have internal predecessors, (4245), 0 states have call successors, (0), 0 states 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 12:14:52,316 INFO L175 Difference]: Start difference. First operand has 389 places, 582 transitions, 6703 flow. Second operand 14 states and 3050 transitions. [2023-11-10 12:14:52,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 807 transitions, 11363 flow [2023-11-10 12:14:52,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 807 transitions, 10726 flow, removed 216 selfloop flow, removed 5 redundant places. [2023-11-10 12:14:52,492 INFO L231 Difference]: Finished difference. Result has 403 places, 676 transitions, 8966 flow [2023-11-10 12:14:52,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=6360, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8966, PETRI_PLACES=403, PETRI_TRANSITIONS=676} [2023-11-10 12:14:52,493 INFO L281 CegarLoopForPetriNet]: 260 programPoint places, 143 predicate places. [2023-11-10 12:14:52,493 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 676 transitions, 8966 flow [2023-11-10 12:14:52,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 210.0909090909091) internal successors, (2311), 11 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states 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 12:14:52,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:14:52,494 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:14:52,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-10 12:14:52,494 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:14:52,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:14:52,495 INFO L85 PathProgramCache]: Analyzing trace with hash 661433601, now seen corresponding path program 1 times [2023-11-10 12:14:52,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:14:52,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223096176] [2023-11-10 12:14:52,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:14:52,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:14:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:14:52,663 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-10 12:14:52,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:14:52,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223096176] [2023-11-10 12:14:52,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223096176] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:14:52,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:14:52,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-10 12:14:52,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432511765] [2023-11-10 12:14:52,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:14:52,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-10 12:14:52,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:14:52,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-10 12:14:52,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-10 12:14:52,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 283 [2023-11-10 12:14:52,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 676 transitions, 8966 flow. Second operand has 8 states, 8 states have (on average 205.375) internal successors, (1643), 8 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states 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 12:14:52,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:14:52,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 283 [2023-11-10 12:14:52,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:14:58,653 INFO L124 PetriNetUnfolderBase]: 5714/30333 cut-off events. [2023-11-10 12:14:58,653 INFO L125 PetriNetUnfolderBase]: For 158265/158796 co-relation queries the response was YES. [2023-11-10 12:14:59,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75775 conditions, 30333 events. 5714/30333 cut-off events. For 158265/158796 co-relation queries the response was YES. Maximal size of possible extension queue 817. Compared 423465 event pairs, 1186 based on Foata normal form. 343/28290 useless extension candidates. Maximal degree in co-relation 75697. Up to 4284 conditions per place. [2023-11-10 12:14:59,245 INFO L140 encePairwiseOnDemand]: 270/283 looper letters, 435 selfloop transitions, 87 changer transitions 27/977 dead transitions. [2023-11-10 12:14:59,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 977 transitions, 13760 flow [2023-11-10 12:14:59,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-10 12:14:59,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-10 12:14:59,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2815 transitions. [2023-11-10 12:14:59,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7651535743408535 [2023-11-10 12:14:59,249 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2815 transitions. [2023-11-10 12:14:59,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2815 transitions. [2023-11-10 12:14:59,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:14:59,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2815 transitions. [2023-11-10 12:14:59,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 216.53846153846155) internal successors, (2815), 13 states have internal predecessors, (2815), 0 states have call successors, (0), 0 states 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 12:14:59,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 283.0) internal successors, (3962), 14 states have internal predecessors, (3962), 0 states have call successors, (0), 0 states 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 12:14:59,255 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 283.0) internal successors, (3962), 14 states have internal predecessors, (3962), 0 states have call successors, (0), 0 states 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 12:14:59,255 INFO L175 Difference]: Start difference. First operand has 403 places, 676 transitions, 8966 flow. Second operand 13 states and 2815 transitions. [2023-11-10 12:14:59,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 977 transitions, 13760 flow [2023-11-10 12:14:59,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 977 transitions, 13093 flow, removed 326 selfloop flow, removed 7 redundant places. [2023-11-10 12:14:59,844 INFO L231 Difference]: Finished difference. Result has 411 places, 742 transitions, 9677 flow [2023-11-10 12:14:59,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=8378, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=671, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=640, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9677, PETRI_PLACES=411, PETRI_TRANSITIONS=742} [2023-11-10 12:14:59,845 INFO L281 CegarLoopForPetriNet]: 260 programPoint places, 151 predicate places. [2023-11-10 12:14:59,845 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 742 transitions, 9677 flow [2023-11-10 12:14:59,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 205.375) internal successors, (1643), 8 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states 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 12:14:59,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:14:59,845 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:14:59,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-10 12:14:59,846 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:14:59,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:14:59,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1880656993, now seen corresponding path program 2 times [2023-11-10 12:14:59,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:14:59,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539321011] [2023-11-10 12:14:59,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:14:59,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:14:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:15:00,137 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-10 12:15:00,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:15:00,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539321011] [2023-11-10 12:15:00,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539321011] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:15:00,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:15:00,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-10 12:15:00,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675830461] [2023-11-10 12:15:00,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:15:00,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-10 12:15:00,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:15:00,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-10 12:15:00,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-10 12:15:00,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 283 [2023-11-10 12:15:00,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 742 transitions, 9677 flow. Second operand has 8 states, 8 states have (on average 205.375) internal successors, (1643), 8 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states 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 12:15:00,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:15:00,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 283 [2023-11-10 12:15:00,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:15:08,066 INFO L124 PetriNetUnfolderBase]: 7972/39685 cut-off events. [2023-11-10 12:15:08,067 INFO L125 PetriNetUnfolderBase]: For 231989/233024 co-relation queries the response was YES. [2023-11-10 12:15:08,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107382 conditions, 39685 events. 7972/39685 cut-off events. For 231989/233024 co-relation queries the response was YES. Maximal size of possible extension queue 1040. Compared 569885 event pairs, 2276 based on Foata normal form. 182/36941 useless extension candidates. Maximal degree in co-relation 107303. Up to 8693 conditions per place. [2023-11-10 12:15:08,728 INFO L140 encePairwiseOnDemand]: 262/283 looper letters, 485 selfloop transitions, 120 changer transitions 9/1042 dead transitions. [2023-11-10 12:15:08,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 1042 transitions, 14538 flow [2023-11-10 12:15:08,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-10 12:15:08,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-10 12:15:08,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2007 transitions. [2023-11-10 12:15:08,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7879858657243817 [2023-11-10 12:15:08,732 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2007 transitions. [2023-11-10 12:15:08,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2007 transitions. [2023-11-10 12:15:08,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:15:08,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2007 transitions. [2023-11-10 12:15:08,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 223.0) internal successors, (2007), 9 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states 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 12:15:08,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 283.0) internal successors, (2830), 10 states have internal predecessors, (2830), 0 states have call successors, (0), 0 states 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 12:15:08,737 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 283.0) internal successors, (2830), 10 states have internal predecessors, (2830), 0 states have call successors, (0), 0 states 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 12:15:08,738 INFO L175 Difference]: Start difference. First operand has 411 places, 742 transitions, 9677 flow. Second operand 9 states and 2007 transitions. [2023-11-10 12:15:08,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 1042 transitions, 14538 flow [2023-11-10 12:15:09,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 1042 transitions, 14334 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-11-10 12:15:09,911 INFO L231 Difference]: Finished difference. Result has 424 places, 811 transitions, 11015 flow [2023-11-10 12:15:09,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=9536, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=645, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11015, PETRI_PLACES=424, PETRI_TRANSITIONS=811} [2023-11-10 12:15:09,912 INFO L281 CegarLoopForPetriNet]: 260 programPoint places, 164 predicate places. [2023-11-10 12:15:09,912 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 811 transitions, 11015 flow [2023-11-10 12:15:09,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 205.375) internal successors, (1643), 8 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states 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 12:15:09,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:15:09,918 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:15:09,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-10 12:15:09,919 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:15:09,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:15:09,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1746579839, now seen corresponding path program 3 times [2023-11-10 12:15:09,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:15:09,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506222853] [2023-11-10 12:15:09,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:15:09,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:15:09,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:15:10,167 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-10 12:15:10,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:15:10,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506222853] [2023-11-10 12:15:10,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506222853] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:15:10,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:15:10,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-10 12:15:10,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98082501] [2023-11-10 12:15:10,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:15:10,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-10 12:15:10,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:15:10,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-10 12:15:10,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-10 12:15:10,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 283 [2023-11-10 12:15:10,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 811 transitions, 11015 flow. Second operand has 8 states, 8 states have (on average 205.375) internal successors, (1643), 8 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states 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 12:15:10,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:15:10,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 283 [2023-11-10 12:15:10,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:15:20,199 INFO L124 PetriNetUnfolderBase]: 8918/46241 cut-off events. [2023-11-10 12:15:20,199 INFO L125 PetriNetUnfolderBase]: For 285760/287125 co-relation queries the response was YES. [2023-11-10 12:15:20,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127502 conditions, 46241 events. 8918/46241 cut-off events. For 285760/287125 co-relation queries the response was YES. Maximal size of possible extension queue 1216. Compared 685333 event pairs, 1865 based on Foata normal form. 305/43261 useless extension candidates. Maximal degree in co-relation 127417. Up to 9572 conditions per place. [2023-11-10 12:15:21,216 INFO L140 encePairwiseOnDemand]: 252/283 looper letters, 558 selfloop transitions, 246 changer transitions 18/1250 dead transitions. [2023-11-10 12:15:21,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 1250 transitions, 19641 flow [2023-11-10 12:15:21,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-10 12:15:21,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-10 12:15:21,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3012 transitions. [2023-11-10 12:15:21,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7602221100454316 [2023-11-10 12:15:21,219 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3012 transitions. [2023-11-10 12:15:21,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3012 transitions. [2023-11-10 12:15:21,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:15:21,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3012 transitions. [2023-11-10 12:15:21,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 215.14285714285714) internal successors, (3012), 14 states have internal predecessors, (3012), 0 states have call successors, (0), 0 states 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 12:15:21,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 283.0) internal successors, (4245), 15 states have internal predecessors, (4245), 0 states have call successors, (0), 0 states 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 12:15:21,226 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 283.0) internal successors, (4245), 15 states have internal predecessors, (4245), 0 states have call successors, (0), 0 states 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 12:15:21,226 INFO L175 Difference]: Start difference. First operand has 424 places, 811 transitions, 11015 flow. Second operand 14 states and 3012 transitions. [2023-11-10 12:15:21,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 1250 transitions, 19641 flow [2023-11-10 12:15:22,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 1250 transitions, 19591 flow, removed 25 selfloop flow, removed 1 redundant places. [2023-11-10 12:15:22,696 INFO L231 Difference]: Finished difference. Result has 444 places, 942 transitions, 14002 flow [2023-11-10 12:15:22,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=10995, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=811, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=660, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=14002, PETRI_PLACES=444, PETRI_TRANSITIONS=942} [2023-11-10 12:15:22,697 INFO L281 CegarLoopForPetriNet]: 260 programPoint places, 184 predicate places. [2023-11-10 12:15:22,697 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 942 transitions, 14002 flow [2023-11-10 12:15:22,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 205.375) internal successors, (1643), 8 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states 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 12:15:22,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:15:22,698 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:15:22,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-10 12:15:22,698 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:15:22,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:15:22,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1003197891, now seen corresponding path program 4 times [2023-11-10 12:15:22,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:15:22,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018816699] [2023-11-10 12:15:22,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:15:22,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:15:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:15:22,884 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-10 12:15:22,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:15:22,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018816699] [2023-11-10 12:15:22,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018816699] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:15:22,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:15:22,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-10 12:15:22,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884308568] [2023-11-10 12:15:22,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:15:22,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-10 12:15:22,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:15:22,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-10 12:15:22,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-10 12:15:22,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 283 [2023-11-10 12:15:22,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 942 transitions, 14002 flow. Second operand has 8 states, 8 states have (on average 205.375) internal successors, (1643), 8 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states 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 12:15:22,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:15:22,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 283 [2023-11-10 12:15:22,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:15:35,652 INFO L124 PetriNetUnfolderBase]: 10257/53990 cut-off events. [2023-11-10 12:15:35,653 INFO L125 PetriNetUnfolderBase]: For 399898/401822 co-relation queries the response was YES. [2023-11-10 12:15:36,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158822 conditions, 53990 events. 10257/53990 cut-off events. For 399898/401822 co-relation queries the response was YES. Maximal size of possible extension queue 1462. Compared 823839 event pairs, 3742 based on Foata normal form. 545/51416 useless extension candidates. Maximal degree in co-relation 158728. Up to 5591 conditions per place. [2023-11-10 12:15:36,882 INFO L140 encePairwiseOnDemand]: 268/283 looper letters, 623 selfloop transitions, 274 changer transitions 5/1330 dead transitions. [2023-11-10 12:15:36,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 1330 transitions, 20759 flow [2023-11-10 12:15:36,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-10 12:15:36,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-10 12:15:36,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2056 transitions. [2023-11-10 12:15:36,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8072241853160581 [2023-11-10 12:15:36,884 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2056 transitions. [2023-11-10 12:15:36,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2056 transitions. [2023-11-10 12:15:36,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:15:36,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2056 transitions. [2023-11-10 12:15:36,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 228.44444444444446) internal successors, (2056), 9 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states 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 12:15:36,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 283.0) internal successors, (2830), 10 states have internal predecessors, (2830), 0 states have call successors, (0), 0 states 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 12:15:36,888 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 283.0) internal successors, (2830), 10 states have internal predecessors, (2830), 0 states have call successors, (0), 0 states 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 12:15:36,888 INFO L175 Difference]: Start difference. First operand has 444 places, 942 transitions, 14002 flow. Second operand 9 states and 2056 transitions. [2023-11-10 12:15:36,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 1330 transitions, 20759 flow [2023-11-10 12:15:38,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 1330 transitions, 20723 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-11-10 12:15:38,729 INFO L231 Difference]: Finished difference. Result has 459 places, 1048 transitions, 17161 flow [2023-11-10 12:15:38,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=13968, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=942, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=729, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17161, PETRI_PLACES=459, PETRI_TRANSITIONS=1048} [2023-11-10 12:15:38,730 INFO L281 CegarLoopForPetriNet]: 260 programPoint places, 199 predicate places. [2023-11-10 12:15:38,730 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 1048 transitions, 17161 flow [2023-11-10 12:15:38,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 205.375) internal successors, (1643), 8 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states 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 12:15:38,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:15:38,730 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:15:38,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-10 12:15:38,730 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:15:38,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:15:38,731 INFO L85 PathProgramCache]: Analyzing trace with hash 806757561, now seen corresponding path program 5 times [2023-11-10 12:15:38,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:15:38,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363921277] [2023-11-10 12:15:38,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:15:38,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:15:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:15:38,883 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-10 12:15:38,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:15:38,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363921277] [2023-11-10 12:15:38,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363921277] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:15:38,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435857542] [2023-11-10 12:15:38,884 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-10 12:15:38,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:15:38,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:15:38,887 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:15:38,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-10 12:15:38,988 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-10 12:15:38,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:15:38,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-10 12:15:38,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:15:39,169 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-10 12:15:39,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:15:39,358 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-10 12:15:39,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435857542] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:15:39,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:15:39,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 12] total 22 [2023-11-10 12:15:39,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197326325] [2023-11-10 12:15:39,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:15:39,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-10 12:15:39,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:15:39,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-10 12:15:39,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2023-11-10 12:15:39,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 283 [2023-11-10 12:15:39,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 1048 transitions, 17161 flow. Second operand has 22 states, 22 states have (on average 203.22727272727272) internal successors, (4471), 22 states have internal predecessors, (4471), 0 states have call successors, (0), 0 states 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 12:15:39,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:15:39,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 283 [2023-11-10 12:15:39,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:15:55,230 INFO L124 PetriNetUnfolderBase]: 11507/59906 cut-off events. [2023-11-10 12:15:55,230 INFO L125 PetriNetUnfolderBase]: For 549934/553431 co-relation queries the response was YES. [2023-11-10 12:15:56,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185219 conditions, 59906 events. 11507/59906 cut-off events. For 549934/553431 co-relation queries the response was YES. Maximal size of possible extension queue 1556. Compared 924656 event pairs, 1484 based on Foata normal form. 1130/57635 useless extension candidates. Maximal degree in co-relation 185118. Up to 3396 conditions per place. [2023-11-10 12:15:56,564 INFO L140 encePairwiseOnDemand]: 246/283 looper letters, 925 selfloop transitions, 606 changer transitions 195/2154 dead transitions. [2023-11-10 12:15:56,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 2154 transitions, 40997 flow [2023-11-10 12:15:56,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-10 12:15:56,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-11-10 12:15:56,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 7821 transitions. [2023-11-10 12:15:56,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7469200649412664 [2023-11-10 12:15:56,569 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 7821 transitions. [2023-11-10 12:15:56,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 7821 transitions. [2023-11-10 12:15:56,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:15:56,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 7821 transitions. [2023-11-10 12:15:56,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 211.3783783783784) internal successors, (7821), 37 states have internal predecessors, (7821), 0 states have call successors, (0), 0 states 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 12:15:56,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 283.0) internal successors, (10754), 38 states have internal predecessors, (10754), 0 states have call successors, (0), 0 states 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 12:15:56,582 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 283.0) internal successors, (10754), 38 states have internal predecessors, (10754), 0 states have call successors, (0), 0 states 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 12:15:56,582 INFO L175 Difference]: Start difference. First operand has 459 places, 1048 transitions, 17161 flow. Second operand 37 states and 7821 transitions. [2023-11-10 12:15:56,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 2154 transitions, 40997 flow [2023-11-10 12:15:59,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 2154 transitions, 40949 flow, removed 24 selfloop flow, removed 0 redundant places. [2023-11-10 12:15:59,419 INFO L231 Difference]: Finished difference. Result has 523 places, 1406 transitions, 27257 flow [2023-11-10 12:15:59,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=17140, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1047, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=310, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=696, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=27257, PETRI_PLACES=523, PETRI_TRANSITIONS=1406} [2023-11-10 12:15:59,464 INFO L281 CegarLoopForPetriNet]: 260 programPoint places, 263 predicate places. [2023-11-10 12:15:59,464 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 1406 transitions, 27257 flow [2023-11-10 12:15:59,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 203.22727272727272) internal successors, (4471), 22 states have internal predecessors, (4471), 0 states have call successors, (0), 0 states 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 12:15:59,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:15:59,465 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:15:59,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-10 12:15:59,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:15:59,666 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:15:59,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:15:59,667 INFO L85 PathProgramCache]: Analyzing trace with hash -780240995, now seen corresponding path program 6 times [2023-11-10 12:15:59,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:15:59,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683770480] [2023-11-10 12:15:59,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:15:59,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:15:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:15:59,834 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-10 12:15:59,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:15:59,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683770480] [2023-11-10 12:15:59,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683770480] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:15:59,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:15:59,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-10 12:15:59,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703993887] [2023-11-10 12:15:59,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:15:59,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-10 12:15:59,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:15:59,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-10 12:15:59,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-10 12:15:59,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 283 [2023-11-10 12:15:59,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 1406 transitions, 27257 flow. Second operand has 8 states, 8 states have (on average 205.375) internal successors, (1643), 8 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states 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 12:15:59,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:15:59,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 283 [2023-11-10 12:15:59,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:16:20,661 INFO L124 PetriNetUnfolderBase]: 11528/55650 cut-off events. [2023-11-10 12:16:20,661 INFO L125 PetriNetUnfolderBase]: For 701833/705511 co-relation queries the response was YES. [2023-11-10 12:16:22,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205449 conditions, 55650 events. 11528/55650 cut-off events. For 701833/705511 co-relation queries the response was YES. Maximal size of possible extension queue 1492. Compared 841144 event pairs, 4022 based on Foata normal form. 454/52568 useless extension candidates. Maximal degree in co-relation 205319. Up to 9416 conditions per place. [2023-11-10 12:16:23,098 INFO L140 encePairwiseOnDemand]: 260/283 looper letters, 853 selfloop transitions, 481 changer transitions 10/1772 dead transitions. [2023-11-10 12:16:23,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 1772 transitions, 35279 flow [2023-11-10 12:16:23,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-10 12:16:23,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-10 12:16:23,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2664 transitions. [2023-11-10 12:16:23,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.784452296819788 [2023-11-10 12:16:23,114 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2664 transitions. [2023-11-10 12:16:23,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2664 transitions. [2023-11-10 12:16:23,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:16:23,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2664 transitions. [2023-11-10 12:16:23,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 222.0) internal successors, (2664), 12 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states 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 12:16:23,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 283.0) internal successors, (3679), 13 states have internal predecessors, (3679), 0 states have call successors, (0), 0 states 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 12:16:23,129 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 283.0) internal successors, (3679), 13 states have internal predecessors, (3679), 0 states have call successors, (0), 0 states 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 12:16:23,129 INFO L175 Difference]: Start difference. First operand has 523 places, 1406 transitions, 27257 flow. Second operand 12 states and 2664 transitions. [2023-11-10 12:16:23,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 1772 transitions, 35279 flow [2023-11-10 12:16:29,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 1772 transitions, 34552 flow, removed 281 selfloop flow, removed 6 redundant places. [2023-11-10 12:16:29,050 INFO L231 Difference]: Finished difference. Result has 533 places, 1491 transitions, 30136 flow [2023-11-10 12:16:29,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=26656, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=396, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=977, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=30136, PETRI_PLACES=533, PETRI_TRANSITIONS=1491} [2023-11-10 12:16:29,051 INFO L281 CegarLoopForPetriNet]: 260 programPoint places, 273 predicate places. [2023-11-10 12:16:29,052 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 1491 transitions, 30136 flow [2023-11-10 12:16:29,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 205.375) internal successors, (1643), 8 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states 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 12:16:29,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:16:29,052 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:16:29,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-10 12:16:29,052 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:16:29,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:16:29,053 INFO L85 PathProgramCache]: Analyzing trace with hash -416597677, now seen corresponding path program 7 times [2023-11-10 12:16:29,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:16:29,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679460362] [2023-11-10 12:16:29,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:16:29,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:16:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:16:29,251 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-10 12:16:29,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:16:29,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679460362] [2023-11-10 12:16:29,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679460362] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:16:29,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:16:29,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-10 12:16:29,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8230955] [2023-11-10 12:16:29,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:16:29,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-10 12:16:29,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:16:29,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-10 12:16:29,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-10 12:16:29,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 283 [2023-11-10 12:16:29,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 1491 transitions, 30136 flow. Second operand has 8 states, 8 states have (on average 205.375) internal successors, (1643), 8 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states 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 12:16:29,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:16:29,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 283 [2023-11-10 12:16:29,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand