/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-29 22:54:37,113 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 22:54:37,149 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 [2023-11-29 22:54:37,168 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 22:54:37,169 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 22:54:37,169 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 22:54:37,170 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 22:54:37,170 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 22:54:37,170 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 22:54:37,170 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 22:54:37,171 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 22:54:37,171 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 22:54:37,171 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 22:54:37,171 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 22:54:37,171 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 22:54:37,172 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 22:54:37,172 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 22:54:37,172 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 22:54:37,172 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 22:54:37,173 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 22:54:37,173 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 22:54:37,173 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 22:54:37,173 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 22:54:37,173 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-29 22:54:37,174 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 22:54:37,174 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 22:54:37,174 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 22:54:37,174 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 22:54:37,174 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 22:54:37,175 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 22:54:37,175 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 22:54:37,175 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 22:54:37,175 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 22:54:37,175 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-11-29 22:54:37,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 22:54:37,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 22:54:37,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 22:54:37,338 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 22:54:37,338 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 22:54:37,339 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c [2023-11-29 22:54:38,398 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 22:54:38,531 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 22:54:38,531 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c [2023-11-29 22:54:38,536 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9a587800/9d2c889f03dd467ea984dc5e833c4131/FLAG6559ac79b [2023-11-29 22:54:38,545 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9a587800/9d2c889f03dd467ea984dc5e833c4131 [2023-11-29 22:54:38,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 22:54:38,547 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-29 22:54:38,548 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 22:54:38,548 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 22:54:38,551 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 22:54:38,551 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:54:38" (1/1) ... [2023-11-29 22:54:38,552 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a9c9f07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:54:38, skipping insertion in model container [2023-11-29 22:54:38,552 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:54:38" (1/1) ... [2023-11-29 22:54:38,567 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 22:54:38,681 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c[2630,2643] [2023-11-29 22:54:38,684 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 22:54:38,689 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 22:54:38,705 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c[2630,2643] [2023-11-29 22:54:38,706 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 22:54:38,710 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 22:54:38,711 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 22:54:38,715 INFO L206 MainTranslator]: Completed translation [2023-11-29 22:54:38,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:54:38 WrapperNode [2023-11-29 22:54:38,715 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 22:54:38,716 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 22:54:38,716 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 22:54:38,716 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 22:54:38,720 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:54:38" (1/1) ... [2023-11-29 22:54:38,725 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:54:38" (1/1) ... [2023-11-29 22:54:38,735 INFO L138 Inliner]: procedures = 22, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2023-11-29 22:54:38,735 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 22:54:38,736 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 22:54:38,736 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 22:54:38,736 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 22:54:38,744 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:54:38" (1/1) ... [2023-11-29 22:54:38,744 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:54:38" (1/1) ... [2023-11-29 22:54:38,746 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:54:38" (1/1) ... [2023-11-29 22:54:38,746 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:54:38" (1/1) ... [2023-11-29 22:54:38,749 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:54:38" (1/1) ... [2023-11-29 22:54:38,751 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:54:38" (1/1) ... [2023-11-29 22:54:38,752 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:54:38" (1/1) ... [2023-11-29 22:54:38,753 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:54:38" (1/1) ... [2023-11-29 22:54:38,754 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 22:54:38,755 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 22:54:38,755 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 22:54:38,755 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 22:54:38,755 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:54:38" (1/1) ... [2023-11-29 22:54:38,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 22:54:38,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:54:38,777 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) [2023-11-29 22:54:38,784 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 [2023-11-29 22:54:38,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 22:54:38,808 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 22:54:38,809 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 22:54:38,809 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 22:54:38,809 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 22:54:38,809 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 22:54:38,809 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 22:54:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 22:54:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 22:54:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 22:54:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 22:54:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 22:54:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 22:54:38,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 22:54:38,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 22:54:38,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 22:54:38,829 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 22:54:38,944 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 22:54:38,945 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 22:54:39,138 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 22:54:39,171 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 22:54:39,171 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 22:54:39,172 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:54:39 BoogieIcfgContainer [2023-11-29 22:54:39,172 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 22:54:39,174 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 22:54:39,174 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 22:54:39,176 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 22:54:39,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:54:38" (1/3) ... [2023-11-29 22:54:39,176 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@635b5ce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:54:39, skipping insertion in model container [2023-11-29 22:54:39,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:54:38" (2/3) ... [2023-11-29 22:54:39,177 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@635b5ce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:54:39, skipping insertion in model container [2023-11-29 22:54:39,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:54:39" (3/3) ... [2023-11-29 22:54:39,177 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-mult-equiv.wvr.c [2023-11-29 22:54:39,188 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 22:54:39,188 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 22:54:39,188 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 22:54:39,227 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 22:54:39,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 98 transitions, 217 flow [2023-11-29 22:54:39,279 INFO L124 PetriNetUnfolderBase]: 7/95 cut-off events. [2023-11-29 22:54:39,279 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 22:54:39,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 95 events. 7/95 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-11-29 22:54:39,282 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 98 transitions, 217 flow [2023-11-29 22:54:39,285 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 84 transitions, 186 flow [2023-11-29 22:54:39,291 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 22:54:39,295 INFO L362 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=true, 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;@472ecdbf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 22:54:39,295 INFO L363 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-29 22:54:39,311 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 22:54:39,312 INFO L124 PetriNetUnfolderBase]: 7/83 cut-off events. [2023-11-29 22:54:39,312 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 22:54:39,312 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:54:39,312 INFO L232 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] [2023-11-29 22:54:39,312 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:54:39,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:54:39,316 INFO L85 PathProgramCache]: Analyzing trace with hash -922399406, now seen corresponding path program 1 times [2023-11-29 22:54:39,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:54:39,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233605557] [2023-11-29 22:54:39,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:54:39,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:54:39,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:54:39,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:54:39,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:54:39,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233605557] [2023-11-29 22:54:39,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233605557] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:54:39,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:54:39,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 22:54:39,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564802512] [2023-11-29 22:54:39,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:54:39,882 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 22:54:39,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:54:39,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 22:54:39,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 22:54:39,902 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 98 [2023-11-29 22:54:39,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 84 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 77.33333333333333) internal successors, (464), 6 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:39,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:54:39,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 98 [2023-11-29 22:54:39,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:54:40,003 INFO L124 PetriNetUnfolderBase]: 42/226 cut-off events. [2023-11-29 22:54:40,003 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-11-29 22:54:40,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 226 events. 42/226 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 683 event pairs, 2 based on Foata normal form. 46/253 useless extension candidates. Maximal degree in co-relation 159. Up to 58 conditions per place. [2023-11-29 22:54:40,006 INFO L140 encePairwiseOnDemand]: 85/98 looper letters, 29 selfloop transitions, 7 changer transitions 7/105 dead transitions. [2023-11-29 22:54:40,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 105 transitions, 338 flow [2023-11-29 22:54:40,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 22:54:40,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 22:54:40,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 656 transitions. [2023-11-29 22:54:40,017 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8367346938775511 [2023-11-29 22:54:40,017 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 656 transitions. [2023-11-29 22:54:40,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 656 transitions. [2023-11-29 22:54:40,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:54:40,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 656 transitions. [2023-11-29 22:54:40,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 82.0) internal successors, (656), 8 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:40,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:40,028 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:40,030 INFO L307 CegarLoopForPetriNet]: 87 programPoint places, 7 predicate places. [2023-11-29 22:54:40,031 INFO L500 AbstractCegarLoop]: Abstraction has has 94 places, 105 transitions, 338 flow [2023-11-29 22:54:40,031 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.33333333333333) internal successors, (464), 6 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:40,031 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:54:40,031 INFO L232 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] [2023-11-29 22:54:40,031 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 22:54:40,031 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:54:40,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:54:40,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1989939415, now seen corresponding path program 1 times [2023-11-29 22:54:40,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:54:40,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46534978] [2023-11-29 22:54:40,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:54:40,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:54:40,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:54:40,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:54:40,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:54:40,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46534978] [2023-11-29 22:54:40,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46534978] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:54:40,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:54:40,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 22:54:40,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233948649] [2023-11-29 22:54:40,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:54:40,350 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 22:54:40,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:54:40,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 22:54:40,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 22:54:40,352 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 98 [2023-11-29 22:54:40,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 105 transitions, 338 flow. Second operand has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:40,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:54:40,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 98 [2023-11-29 22:54:40,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:54:40,588 INFO L124 PetriNetUnfolderBase]: 346/923 cut-off events. [2023-11-29 22:54:40,588 INFO L125 PetriNetUnfolderBase]: For 515/597 co-relation queries the response was YES. [2023-11-29 22:54:40,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1849 conditions, 923 events. 346/923 cut-off events. For 515/597 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5479 event pairs, 69 based on Foata normal form. 19/800 useless extension candidates. Maximal degree in co-relation 1313. Up to 294 conditions per place. [2023-11-29 22:54:40,598 INFO L140 encePairwiseOnDemand]: 87/98 looper letters, 67 selfloop transitions, 16 changer transitions 7/154 dead transitions. [2023-11-29 22:54:40,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 154 transitions, 692 flow [2023-11-29 22:54:40,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 22:54:40,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 22:54:40,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 572 transitions. [2023-11-29 22:54:40,600 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8338192419825073 [2023-11-29 22:54:40,600 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 572 transitions. [2023-11-29 22:54:40,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 572 transitions. [2023-11-29 22:54:40,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:54:40,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 572 transitions. [2023-11-29 22:54:40,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 81.71428571428571) internal successors, (572), 7 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:40,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:40,604 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:40,604 INFO L307 CegarLoopForPetriNet]: 87 programPoint places, 13 predicate places. [2023-11-29 22:54:40,605 INFO L500 AbstractCegarLoop]: Abstraction has has 100 places, 154 transitions, 692 flow [2023-11-29 22:54:40,605 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:40,605 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:54:40,605 INFO L232 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] [2023-11-29 22:54:40,605 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 22:54:40,606 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:54:40,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:54:40,607 INFO L85 PathProgramCache]: Analyzing trace with hash -865516471, now seen corresponding path program 2 times [2023-11-29 22:54:40,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:54:40,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799850929] [2023-11-29 22:54:40,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:54:40,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:54:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:54:40,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:54:40,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:54:40,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799850929] [2023-11-29 22:54:40,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799850929] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:54:40,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:54:40,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 22:54:40,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868622892] [2023-11-29 22:54:40,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:54:40,918 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 22:54:40,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:54:40,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 22:54:40,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 22:54:40,923 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 98 [2023-11-29 22:54:40,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 154 transitions, 692 flow. Second operand has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:40,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:54:40,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 98 [2023-11-29 22:54:40,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:54:41,086 INFO L124 PetriNetUnfolderBase]: 435/1116 cut-off events. [2023-11-29 22:54:41,086 INFO L125 PetriNetUnfolderBase]: For 899/1250 co-relation queries the response was YES. [2023-11-29 22:54:41,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2921 conditions, 1116 events. 435/1116 cut-off events. For 899/1250 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6945 event pairs, 66 based on Foata normal form. 37/993 useless extension candidates. Maximal degree in co-relation 2264. Up to 451 conditions per place. [2023-11-29 22:54:41,093 INFO L140 encePairwiseOnDemand]: 89/98 looper letters, 105 selfloop transitions, 23 changer transitions 7/199 dead transitions. [2023-11-29 22:54:41,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 199 transitions, 1178 flow [2023-11-29 22:54:41,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 22:54:41,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 22:54:41,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 495 transitions. [2023-11-29 22:54:41,094 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8418367346938775 [2023-11-29 22:54:41,094 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 495 transitions. [2023-11-29 22:54:41,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 495 transitions. [2023-11-29 22:54:41,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:54:41,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 495 transitions. [2023-11-29 22:54:41,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 82.5) internal successors, (495), 6 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:41,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:41,097 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:41,098 INFO L307 CegarLoopForPetriNet]: 87 programPoint places, 18 predicate places. [2023-11-29 22:54:41,098 INFO L500 AbstractCegarLoop]: Abstraction has has 105 places, 199 transitions, 1178 flow [2023-11-29 22:54:41,099 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:41,099 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:54:41,099 INFO L232 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] [2023-11-29 22:54:41,099 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 22:54:41,099 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:54:41,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:54:41,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1757610033, now seen corresponding path program 3 times [2023-11-29 22:54:41,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:54:41,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651673927] [2023-11-29 22:54:41,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:54:41,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:54:41,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:54:41,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:54:41,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:54:41,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651673927] [2023-11-29 22:54:41,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651673927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:54:41,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:54:41,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 22:54:41,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112534870] [2023-11-29 22:54:41,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:54:41,293 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 22:54:41,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:54:41,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 22:54:41,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 22:54:41,295 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 98 [2023-11-29 22:54:41,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 199 transitions, 1178 flow. Second operand has 5 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:41,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:54:41,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 98 [2023-11-29 22:54:41,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:54:41,466 INFO L124 PetriNetUnfolderBase]: 539/1239 cut-off events. [2023-11-29 22:54:41,467 INFO L125 PetriNetUnfolderBase]: For 1610/3260 co-relation queries the response was YES. [2023-11-29 22:54:41,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4231 conditions, 1239 events. 539/1239 cut-off events. For 1610/3260 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 7504 event pairs, 56 based on Foata normal form. 31/1103 useless extension candidates. Maximal degree in co-relation 3541. Up to 600 conditions per place. [2023-11-29 22:54:41,475 INFO L140 encePairwiseOnDemand]: 90/98 looper letters, 153 selfloop transitions, 27 changer transitions 8/252 dead transitions. [2023-11-29 22:54:41,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 252 transitions, 1910 flow [2023-11-29 22:54:41,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 22:54:41,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 22:54:41,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 488 transitions. [2023-11-29 22:54:41,477 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8299319727891157 [2023-11-29 22:54:41,477 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 488 transitions. [2023-11-29 22:54:41,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 488 transitions. [2023-11-29 22:54:41,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:54:41,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 488 transitions. [2023-11-29 22:54:41,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 81.33333333333333) internal successors, (488), 6 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:41,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:41,480 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:41,481 INFO L307 CegarLoopForPetriNet]: 87 programPoint places, 23 predicate places. [2023-11-29 22:54:41,481 INFO L500 AbstractCegarLoop]: Abstraction has has 110 places, 252 transitions, 1910 flow [2023-11-29 22:54:41,482 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:41,482 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:54:41,482 INFO L232 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] [2023-11-29 22:54:41,482 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 22:54:41,482 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:54:41,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:54:41,483 INFO L85 PathProgramCache]: Analyzing trace with hash -2089129529, now seen corresponding path program 4 times [2023-11-29 22:54:41,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:54:41,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674023247] [2023-11-29 22:54:41,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:54:41,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:54:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:54:41,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:54:41,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:54:41,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674023247] [2023-11-29 22:54:41,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674023247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:54:41,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:54:41,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 22:54:41,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18578118] [2023-11-29 22:54:41,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:54:41,634 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 22:54:41,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:54:41,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 22:54:41,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 22:54:41,635 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 98 [2023-11-29 22:54:41,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 252 transitions, 1910 flow. Second operand has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:41,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:54:41,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 98 [2023-11-29 22:54:41,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:54:41,836 INFO L124 PetriNetUnfolderBase]: 542/1202 cut-off events. [2023-11-29 22:54:41,836 INFO L125 PetriNetUnfolderBase]: For 1936/4089 co-relation queries the response was YES. [2023-11-29 22:54:41,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5022 conditions, 1202 events. 542/1202 cut-off events. For 1936/4089 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 7152 event pairs, 40 based on Foata normal form. 26/1078 useless extension candidates. Maximal degree in co-relation 4667. Up to 604 conditions per place. [2023-11-29 22:54:41,846 INFO L140 encePairwiseOnDemand]: 90/98 looper letters, 162 selfloop transitions, 49 changer transitions 7/276 dead transitions. [2023-11-29 22:54:41,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 276 transitions, 2547 flow [2023-11-29 22:54:41,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 22:54:41,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 22:54:41,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 647 transitions. [2023-11-29 22:54:41,848 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8252551020408163 [2023-11-29 22:54:41,848 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 647 transitions. [2023-11-29 22:54:41,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 647 transitions. [2023-11-29 22:54:41,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:54:41,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 647 transitions. [2023-11-29 22:54:41,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 80.875) internal successors, (647), 8 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:41,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:41,851 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:41,852 INFO L307 CegarLoopForPetriNet]: 87 programPoint places, 29 predicate places. [2023-11-29 22:54:41,853 INFO L500 AbstractCegarLoop]: Abstraction has has 116 places, 276 transitions, 2547 flow [2023-11-29 22:54:41,853 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:41,853 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:54:41,853 INFO L232 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] [2023-11-29 22:54:41,853 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 22:54:41,853 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:54:41,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:54:41,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1217676240, now seen corresponding path program 1 times [2023-11-29 22:54:41,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:54:41,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764817373] [2023-11-29 22:54:41,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:54:41,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:54:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:54:42,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:54:42,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:54:42,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764817373] [2023-11-29 22:54:42,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764817373] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:54:42,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:54:42,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 22:54:42,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800752167] [2023-11-29 22:54:42,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:54:42,166 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 22:54:42,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:54:42,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 22:54:42,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 22:54:42,167 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 98 [2023-11-29 22:54:42,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 276 transitions, 2547 flow. Second operand has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:42,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:54:42,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 98 [2023-11-29 22:54:42,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:54:42,488 INFO L124 PetriNetUnfolderBase]: 1436/3060 cut-off events. [2023-11-29 22:54:42,488 INFO L125 PetriNetUnfolderBase]: For 9862/15639 co-relation queries the response was YES. [2023-11-29 22:54:42,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14031 conditions, 3060 events. 1436/3060 cut-off events. For 9862/15639 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 22410 event pairs, 89 based on Foata normal form. 21/2549 useless extension candidates. Maximal degree in co-relation 12052. Up to 1468 conditions per place. [2023-11-29 22:54:42,513 INFO L140 encePairwiseOnDemand]: 90/98 looper letters, 216 selfloop transitions, 157 changer transitions 9/468 dead transitions. [2023-11-29 22:54:42,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 468 transitions, 5534 flow [2023-11-29 22:54:42,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 22:54:42,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 22:54:42,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 419 transitions. [2023-11-29 22:54:42,515 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8551020408163266 [2023-11-29 22:54:42,515 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 419 transitions. [2023-11-29 22:54:42,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 419 transitions. [2023-11-29 22:54:42,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:54:42,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 419 transitions. [2023-11-29 22:54:42,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:42,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:42,518 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:42,519 INFO L307 CegarLoopForPetriNet]: 87 programPoint places, 33 predicate places. [2023-11-29 22:54:42,519 INFO L500 AbstractCegarLoop]: Abstraction has has 120 places, 468 transitions, 5534 flow [2023-11-29 22:54:42,520 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:42,520 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:54:42,520 INFO L232 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] [2023-11-29 22:54:42,520 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 22:54:42,520 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:54:42,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:54:42,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1152517563, now seen corresponding path program 1 times [2023-11-29 22:54:42,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:54:42,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9095320] [2023-11-29 22:54:42,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:54:42,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:54:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:54:42,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:54:42,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:54:42,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9095320] [2023-11-29 22:54:42,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9095320] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:54:42,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040108270] [2023-11-29 22:54:42,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:54:42,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:54:42,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:54:42,702 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) [2023-11-29 22:54:42,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 22:54:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:54:42,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 22:54:42,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:54:43,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:54:43,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:54:43,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:54:43,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040108270] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:54:43,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:54:43,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 16 [2023-11-29 22:54:43,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888463598] [2023-11-29 22:54:43,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:54:43,395 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 22:54:43,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:54:43,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 22:54:43,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-11-29 22:54:43,397 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 98 [2023-11-29 22:54:43,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 468 transitions, 5534 flow. Second operand has 16 states, 16 states have (on average 67.0) internal successors, (1072), 16 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:43,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:54:43,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 98 [2023-11-29 22:54:43,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:54:44,025 INFO L124 PetriNetUnfolderBase]: 1851/4018 cut-off events. [2023-11-29 22:54:44,025 INFO L125 PetriNetUnfolderBase]: For 15858/24291 co-relation queries the response was YES. [2023-11-29 22:54:44,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21469 conditions, 4018 events. 1851/4018 cut-off events. For 15858/24291 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 31279 event pairs, 115 based on Foata normal form. 135/3487 useless extension candidates. Maximal degree in co-relation 17938. Up to 2066 conditions per place. [2023-11-29 22:54:44,058 INFO L140 encePairwiseOnDemand]: 84/98 looper letters, 471 selfloop transitions, 170 changer transitions 27/723 dead transitions. [2023-11-29 22:54:44,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 723 transitions, 10231 flow [2023-11-29 22:54:44,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 22:54:44,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-29 22:54:44,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1333 transitions. [2023-11-29 22:54:44,061 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7158968850698174 [2023-11-29 22:54:44,061 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1333 transitions. [2023-11-29 22:54:44,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1333 transitions. [2023-11-29 22:54:44,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:54:44,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1333 transitions. [2023-11-29 22:54:44,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 70.15789473684211) internal successors, (1333), 19 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:44,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 98.0) internal successors, (1960), 20 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:44,066 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 98.0) internal successors, (1960), 20 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:44,066 INFO L307 CegarLoopForPetriNet]: 87 programPoint places, 51 predicate places. [2023-11-29 22:54:44,066 INFO L500 AbstractCegarLoop]: Abstraction has has 138 places, 723 transitions, 10231 flow [2023-11-29 22:54:44,067 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 67.0) internal successors, (1072), 16 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:44,067 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:54:44,067 INFO L232 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] [2023-11-29 22:54:44,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 22:54:44,274 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:54:44,274 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:54:44,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:54:44,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1378040788, now seen corresponding path program 2 times [2023-11-29 22:54:44,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:54:44,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381091121] [2023-11-29 22:54:44,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:54:44,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:54:44,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:54:44,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:54:44,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:54:44,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381091121] [2023-11-29 22:54:44,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381091121] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:54:44,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:54:44,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 22:54:44,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638084957] [2023-11-29 22:54:44,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:54:44,452 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 22:54:44,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:54:44,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 22:54:44,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 22:54:44,453 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 98 [2023-11-29 22:54:44,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 723 transitions, 10231 flow. Second operand has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:44,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:54:44,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 98 [2023-11-29 22:54:44,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:54:45,083 INFO L124 PetriNetUnfolderBase]: 2197/5027 cut-off events. [2023-11-29 22:54:45,083 INFO L125 PetriNetUnfolderBase]: For 26111/40715 co-relation queries the response was YES. [2023-11-29 22:54:45,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29455 conditions, 5027 events. 2197/5027 cut-off events. For 26111/40715 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 42660 event pairs, 87 based on Foata normal form. 142/4372 useless extension candidates. Maximal degree in co-relation 23232. Up to 2598 conditions per place. [2023-11-29 22:54:45,126 INFO L140 encePairwiseOnDemand]: 88/98 looper letters, 538 selfloop transitions, 245 changer transitions 55/932 dead transitions. [2023-11-29 22:54:45,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 932 transitions, 15263 flow [2023-11-29 22:54:45,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 22:54:45,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 22:54:45,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 492 transitions. [2023-11-29 22:54:45,128 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8367346938775511 [2023-11-29 22:54:45,128 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 492 transitions. [2023-11-29 22:54:45,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 492 transitions. [2023-11-29 22:54:45,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:54:45,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 492 transitions. [2023-11-29 22:54:45,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:45,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:45,130 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:45,131 INFO L307 CegarLoopForPetriNet]: 87 programPoint places, 56 predicate places. [2023-11-29 22:54:45,132 INFO L500 AbstractCegarLoop]: Abstraction has has 143 places, 932 transitions, 15263 flow [2023-11-29 22:54:45,132 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:45,132 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:54:45,132 INFO L232 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] [2023-11-29 22:54:45,132 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 22:54:45,132 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:54:45,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:54:45,132 INFO L85 PathProgramCache]: Analyzing trace with hash 236079784, now seen corresponding path program 3 times [2023-11-29 22:54:45,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:54:45,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456935287] [2023-11-29 22:54:45,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:54:45,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:54:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:54:45,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:54:45,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:54:45,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456935287] [2023-11-29 22:54:45,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456935287] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:54:45,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:54:45,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 22:54:45,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553256473] [2023-11-29 22:54:45,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:54:45,332 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 22:54:45,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:54:45,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 22:54:45,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 22:54:45,333 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 98 [2023-11-29 22:54:45,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 932 transitions, 15263 flow. Second operand has 6 states, 6 states have (on average 76.5) internal successors, (459), 6 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:45,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:54:45,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 98 [2023-11-29 22:54:45,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:54:46,255 INFO L124 PetriNetUnfolderBase]: 2816/6387 cut-off events. [2023-11-29 22:54:46,255 INFO L125 PetriNetUnfolderBase]: For 38121/52056 co-relation queries the response was YES. [2023-11-29 22:54:46,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41647 conditions, 6387 events. 2816/6387 cut-off events. For 38121/52056 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 56861 event pairs, 69 based on Foata normal form. 259/5748 useless extension candidates. Maximal degree in co-relation 38530. Up to 3385 conditions per place. [2023-11-29 22:54:46,315 INFO L140 encePairwiseOnDemand]: 89/98 looper letters, 761 selfloop transitions, 401 changer transitions 70/1326 dead transitions. [2023-11-29 22:54:46,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 1326 transitions, 24643 flow [2023-11-29 22:54:46,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 22:54:46,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 22:54:46,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 592 transitions. [2023-11-29 22:54:46,421 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8629737609329446 [2023-11-29 22:54:46,421 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 592 transitions. [2023-11-29 22:54:46,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 592 transitions. [2023-11-29 22:54:46,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:54:46,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 592 transitions. [2023-11-29 22:54:46,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.57142857142857) internal successors, (592), 7 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:46,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:46,424 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:46,424 INFO L307 CegarLoopForPetriNet]: 87 programPoint places, 62 predicate places. [2023-11-29 22:54:46,424 INFO L500 AbstractCegarLoop]: Abstraction has has 149 places, 1326 transitions, 24643 flow [2023-11-29 22:54:46,425 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.5) internal successors, (459), 6 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:46,425 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:54:46,425 INFO L232 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] [2023-11-29 22:54:46,425 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 22:54:46,425 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:54:46,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:54:46,425 INFO L85 PathProgramCache]: Analyzing trace with hash 273882320, now seen corresponding path program 4 times [2023-11-29 22:54:46,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:54:46,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138217390] [2023-11-29 22:54:46,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:54:46,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:54:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:54:46,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:54:46,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:54:46,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138217390] [2023-11-29 22:54:46,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138217390] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:54:46,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:54:46,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 22:54:46,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954613788] [2023-11-29 22:54:46,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:54:46,638 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 22:54:46,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:54:46,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 22:54:46,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 22:54:46,639 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 98 [2023-11-29 22:54:46,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 1326 transitions, 24643 flow. Second operand has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:46,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:54:46,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 98 [2023-11-29 22:54:46,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:54:47,778 INFO L124 PetriNetUnfolderBase]: 2718/6025 cut-off events. [2023-11-29 22:54:47,778 INFO L125 PetriNetUnfolderBase]: For 43050/62712 co-relation queries the response was YES. [2023-11-29 22:54:47,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43436 conditions, 6025 events. 2718/6025 cut-off events. For 43050/62712 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 51971 event pairs, 78 based on Foata normal form. 297/5432 useless extension candidates. Maximal degree in co-relation 35922. Up to 3218 conditions per place. [2023-11-29 22:54:47,826 INFO L140 encePairwiseOnDemand]: 90/98 looper letters, 753 selfloop transitions, 339 changer transitions 64/1250 dead transitions. [2023-11-29 22:54:47,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 1250 transitions, 25305 flow [2023-11-29 22:54:47,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 22:54:47,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 22:54:47,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 421 transitions. [2023-11-29 22:54:47,828 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8591836734693877 [2023-11-29 22:54:47,828 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 421 transitions. [2023-11-29 22:54:47,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 421 transitions. [2023-11-29 22:54:47,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:54:47,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 421 transitions. [2023-11-29 22:54:47,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:47,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:47,830 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:47,830 INFO L307 CegarLoopForPetriNet]: 87 programPoint places, 66 predicate places. [2023-11-29 22:54:47,830 INFO L500 AbstractCegarLoop]: Abstraction has has 153 places, 1250 transitions, 25305 flow [2023-11-29 22:54:47,831 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:47,831 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:54:47,831 INFO L232 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] [2023-11-29 22:54:47,831 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 22:54:47,831 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:54:47,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:54:47,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1483815632, now seen corresponding path program 5 times [2023-11-29 22:54:47,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:54:47,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42744704] [2023-11-29 22:54:47,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:54:47,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:54:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:54:47,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:54:47,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:54:47,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42744704] [2023-11-29 22:54:47,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42744704] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:54:47,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:54:47,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 22:54:47,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667331603] [2023-11-29 22:54:47,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:54:47,962 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 22:54:47,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:54:47,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 22:54:47,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 22:54:47,963 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 98 [2023-11-29 22:54:47,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 1250 transitions, 25305 flow. Second operand has 6 states, 6 states have (on average 76.5) internal successors, (459), 6 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:47,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:54:47,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 98 [2023-11-29 22:54:47,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:54:49,355 INFO L124 PetriNetUnfolderBase]: 3856/8039 cut-off events. [2023-11-29 22:54:49,356 INFO L125 PetriNetUnfolderBase]: For 64494/86869 co-relation queries the response was YES. [2023-11-29 22:54:49,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65029 conditions, 8039 events. 3856/8039 cut-off events. For 64494/86869 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 70193 event pairs, 83 based on Foata normal form. 395/7382 useless extension candidates. Maximal degree in co-relation 57892. Up to 4446 conditions per place. [2023-11-29 22:54:49,433 INFO L140 encePairwiseOnDemand]: 90/98 looper letters, 1123 selfloop transitions, 828 changer transitions 74/2119 dead transitions. [2023-11-29 22:54:49,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 2119 transitions, 47809 flow [2023-11-29 22:54:49,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 22:54:49,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 22:54:49,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 663 transitions. [2023-11-29 22:54:49,435 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8456632653061225 [2023-11-29 22:54:49,435 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 663 transitions. [2023-11-29 22:54:49,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 663 transitions. [2023-11-29 22:54:49,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:54:49,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 663 transitions. [2023-11-29 22:54:49,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 82.875) internal successors, (663), 8 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:49,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:49,438 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:49,438 INFO L307 CegarLoopForPetriNet]: 87 programPoint places, 73 predicate places. [2023-11-29 22:54:49,438 INFO L500 AbstractCegarLoop]: Abstraction has has 160 places, 2119 transitions, 47809 flow [2023-11-29 22:54:49,438 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.5) internal successors, (459), 6 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:49,438 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:54:49,438 INFO L232 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] [2023-11-29 22:54:49,438 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 22:54:49,439 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:54:49,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:54:49,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1485683278, now seen corresponding path program 6 times [2023-11-29 22:54:49,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:54:49,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753634176] [2023-11-29 22:54:49,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:54:49,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:54:49,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:54:49,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:54:49,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:54:49,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753634176] [2023-11-29 22:54:49,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753634176] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:54:49,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:54:49,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 22:54:49,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329277223] [2023-11-29 22:54:49,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:54:49,556 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 22:54:49,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:54:49,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 22:54:49,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 22:54:49,556 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 98 [2023-11-29 22:54:49,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 2119 transitions, 47809 flow. Second operand has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:49,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:54:49,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 98 [2023-11-29 22:54:49,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:54:51,871 INFO L124 PetriNetUnfolderBase]: 4421/9282 cut-off events. [2023-11-29 22:54:51,871 INFO L125 PetriNetUnfolderBase]: For 83563/121613 co-relation queries the response was YES. [2023-11-29 22:54:51,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77466 conditions, 9282 events. 4421/9282 cut-off events. For 83563/121613 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 82954 event pairs, 323 based on Foata normal form. 286/8252 useless extension candidates. Maximal degree in co-relation 67818. Up to 5916 conditions per place. [2023-11-29 22:54:51,966 INFO L140 encePairwiseOnDemand]: 90/98 looper letters, 1732 selfloop transitions, 99 changer transitions 100/2325 dead transitions. [2023-11-29 22:54:51,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 2325 transitions, 55971 flow [2023-11-29 22:54:51,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 22:54:51,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 22:54:51,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 495 transitions. [2023-11-29 22:54:51,968 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8418367346938775 [2023-11-29 22:54:51,968 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 495 transitions. [2023-11-29 22:54:51,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 495 transitions. [2023-11-29 22:54:51,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:54:51,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 495 transitions. [2023-11-29 22:54:51,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 82.5) internal successors, (495), 6 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:51,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:51,970 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:51,971 INFO L307 CegarLoopForPetriNet]: 87 programPoint places, 78 predicate places. [2023-11-29 22:54:51,971 INFO L500 AbstractCegarLoop]: Abstraction has has 165 places, 2325 transitions, 55971 flow [2023-11-29 22:54:51,971 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:51,971 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:54:51,971 INFO L232 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] [2023-11-29 22:54:51,971 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 22:54:51,971 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:54:51,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:54:51,972 INFO L85 PathProgramCache]: Analyzing trace with hash -864305354, now seen corresponding path program 7 times [2023-11-29 22:54:51,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:54:51,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936237694] [2023-11-29 22:54:51,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:54:51,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:54:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:54:52,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:54:52,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:54:52,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936237694] [2023-11-29 22:54:52,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936237694] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:54:52,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:54:52,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 22:54:52,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339002479] [2023-11-29 22:54:52,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:54:52,120 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 22:54:52,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:54:52,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 22:54:52,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 22:54:52,121 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 98 [2023-11-29 22:54:52,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 2325 transitions, 55971 flow. Second operand has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:52,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:54:52,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 98 [2023-11-29 22:54:52,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:54:54,784 INFO L124 PetriNetUnfolderBase]: 4404/9019 cut-off events. [2023-11-29 22:54:54,785 INFO L125 PetriNetUnfolderBase]: For 83386/144143 co-relation queries the response was YES. [2023-11-29 22:54:54,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82658 conditions, 9019 events. 4404/9019 cut-off events. For 83386/144143 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 78776 event pairs, 263 based on Foata normal form. 224/7965 useless extension candidates. Maximal degree in co-relation 72875. Up to 6085 conditions per place. [2023-11-29 22:54:54,885 INFO L140 encePairwiseOnDemand]: 91/98 looper letters, 1698 selfloop transitions, 96 changer transitions 104/2291 dead transitions. [2023-11-29 22:54:54,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 2291 transitions, 58808 flow [2023-11-29 22:54:54,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 22:54:54,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 22:54:54,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 409 transitions. [2023-11-29 22:54:54,887 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8346938775510204 [2023-11-29 22:54:54,887 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 409 transitions. [2023-11-29 22:54:54,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 409 transitions. [2023-11-29 22:54:54,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:54:54,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 409 transitions. [2023-11-29 22:54:54,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 81.8) internal successors, (409), 5 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:54,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:54,889 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:54,890 INFO L307 CegarLoopForPetriNet]: 87 programPoint places, 82 predicate places. [2023-11-29 22:54:54,890 INFO L500 AbstractCegarLoop]: Abstraction has has 169 places, 2291 transitions, 58808 flow [2023-11-29 22:54:54,890 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:54,890 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:54:54,890 INFO L232 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] [2023-11-29 22:54:54,890 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 22:54:54,890 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:54:54,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:54:54,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1771186386, now seen corresponding path program 8 times [2023-11-29 22:54:54,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:54:54,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181578196] [2023-11-29 22:54:54,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:54:54,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:54:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:54:55,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:54:55,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:54:55,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181578196] [2023-11-29 22:54:55,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181578196] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:54:55,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:54:55,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 22:54:55,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169863384] [2023-11-29 22:54:55,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:54:55,016 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 22:54:55,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:54:55,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 22:54:55,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 22:54:55,017 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 98 [2023-11-29 22:54:55,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 2291 transitions, 58808 flow. Second operand has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:55,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:54:55,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 98 [2023-11-29 22:54:55,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:54:57,605 INFO L124 PetriNetUnfolderBase]: 4374/8848 cut-off events. [2023-11-29 22:54:57,605 INFO L125 PetriNetUnfolderBase]: For 85752/114337 co-relation queries the response was YES. [2023-11-29 22:54:57,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87743 conditions, 8848 events. 4374/8848 cut-off events. For 85752/114337 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 76448 event pairs, 279 based on Foata normal form. 234/7829 useless extension candidates. Maximal degree in co-relation 78694. Up to 6004 conditions per place. [2023-11-29 22:54:57,693 INFO L140 encePairwiseOnDemand]: 90/98 looper letters, 1676 selfloop transitions, 80 changer transitions 130/2271 dead transitions. [2023-11-29 22:54:57,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 2271 transitions, 61980 flow [2023-11-29 22:54:57,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 22:54:57,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 22:54:57,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 478 transitions. [2023-11-29 22:54:57,695 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8129251700680272 [2023-11-29 22:54:57,695 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 478 transitions. [2023-11-29 22:54:57,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 478 transitions. [2023-11-29 22:54:57,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:54:57,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 478 transitions. [2023-11-29 22:54:57,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 79.66666666666667) internal successors, (478), 6 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:57,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:57,697 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:57,697 INFO L307 CegarLoopForPetriNet]: 87 programPoint places, 87 predicate places. [2023-11-29 22:54:57,697 INFO L500 AbstractCegarLoop]: Abstraction has has 174 places, 2271 transitions, 61980 flow [2023-11-29 22:54:57,697 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:57,698 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:54:57,698 INFO L232 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] [2023-11-29 22:54:57,698 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 22:54:57,698 INFO L425 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:54:57,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:54:57,698 INFO L85 PathProgramCache]: Analyzing trace with hash -2144649070, now seen corresponding path program 1 times [2023-11-29 22:54:57,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:54:57,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616227390] [2023-11-29 22:54:57,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:54:57,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:54:57,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:54:57,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:54:57,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:54:57,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616227390] [2023-11-29 22:54:57,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616227390] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:54:57,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999951185] [2023-11-29 22:54:57,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:54:57,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:54:57,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:54:57,908 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) [2023-11-29 22:54:57,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 22:54:57,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:54:57,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 22:54:57,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:54:58,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:54:58,293 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:54:58,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:54:58,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999951185] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:54:58,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:54:58,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2023-11-29 22:54:58,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566263928] [2023-11-29 22:54:58,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:54:58,810 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 22:54:58,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:54:58,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 22:54:58,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-11-29 22:54:58,812 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 98 [2023-11-29 22:54:58,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 2271 transitions, 61980 flow. Second operand has 18 states, 18 states have (on average 66.05555555555556) internal successors, (1189), 18 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:58,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:54:58,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 98 [2023-11-29 22:54:58,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:55:01,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 22:55:03,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 22:55:05,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 22:55:09,973 INFO L124 PetriNetUnfolderBase]: 6118/13743 cut-off events. [2023-11-29 22:55:09,974 INFO L125 PetriNetUnfolderBase]: For 162310/266773 co-relation queries the response was YES. [2023-11-29 22:55:09,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140185 conditions, 13743 events. 6118/13743 cut-off events. For 162310/266773 co-relation queries the response was YES. Maximal size of possible extension queue 920. Compared 134724 event pairs, 434 based on Foata normal form. 262/12194 useless extension candidates. Maximal degree in co-relation 120575. Up to 8924 conditions per place. [2023-11-29 22:55:10,121 INFO L140 encePairwiseOnDemand]: 84/98 looper letters, 2095 selfloop transitions, 752 changer transitions 154/3415 dead transitions. [2023-11-29 22:55:10,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 3415 transitions, 101135 flow [2023-11-29 22:55:10,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 22:55:10,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-29 22:55:10,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1532 transitions. [2023-11-29 22:55:10,125 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7105751391465677 [2023-11-29 22:55:10,125 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1532 transitions. [2023-11-29 22:55:10,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1532 transitions. [2023-11-29 22:55:10,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:55:10,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1532 transitions. [2023-11-29 22:55:10,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 69.63636363636364) internal successors, (1532), 22 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:55:10,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 98.0) internal successors, (2254), 23 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:55:10,131 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 98.0) internal successors, (2254), 23 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:55:10,131 INFO L307 CegarLoopForPetriNet]: 87 programPoint places, 108 predicate places. [2023-11-29 22:55:10,132 INFO L500 AbstractCegarLoop]: Abstraction has has 195 places, 3415 transitions, 101135 flow [2023-11-29 22:55:10,132 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 66.05555555555556) internal successors, (1189), 18 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:55:10,132 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:55:10,132 INFO L232 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] [2023-11-29 22:55:10,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 22:55:10,337 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 22:55:10,337 INFO L425 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:55:10,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:55:10,338 INFO L85 PathProgramCache]: Analyzing trace with hash 975168274, now seen corresponding path program 2 times [2023-11-29 22:55:10,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:55:10,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086146851] [2023-11-29 22:55:10,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:55:10,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:55:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:55:10,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:55:10,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:55:10,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086146851] [2023-11-29 22:55:10,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086146851] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:55:10,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157998064] [2023-11-29 22:55:10,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 22:55:10,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:55:10,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:55:10,706 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 22:55:10,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 22:55:10,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 22:55:10,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:55:10,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 22:55:10,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:55:11,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:55:11,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:55:11,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:55:11,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157998064] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:55:11,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:55:11,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 19 [2023-11-29 22:55:11,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417146745] [2023-11-29 22:55:11,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:55:11,575 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 22:55:11,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:55:11,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 22:55:11,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-11-29 22:55:11,577 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 98 [2023-11-29 22:55:11,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 3415 transitions, 101135 flow. Second operand has 19 states, 19 states have (on average 64.52631578947368) internal successors, (1226), 19 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:55:11,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:55:11,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 98 [2023-11-29 22:55:11,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:55:16,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 22:55:26,063 INFO L124 PetriNetUnfolderBase]: 10322/22372 cut-off events. [2023-11-29 22:55:26,063 INFO L125 PetriNetUnfolderBase]: For 290314/396561 co-relation queries the response was YES. [2023-11-29 22:55:26,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246872 conditions, 22372 events. 10322/22372 cut-off events. For 290314/396561 co-relation queries the response was YES. Maximal size of possible extension queue 1583. Compared 233469 event pairs, 640 based on Foata normal form. 914/20362 useless extension candidates. Maximal degree in co-relation 211737. Up to 14944 conditions per place. [2023-11-29 22:55:26,316 INFO L140 encePairwiseOnDemand]: 81/98 looper letters, 3708 selfloop transitions, 1623 changer transitions 219/5641 dead transitions. [2023-11-29 22:55:26,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 5641 transitions, 178696 flow [2023-11-29 22:55:26,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 22:55:26,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-11-29 22:55:26,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2243 transitions. [2023-11-29 22:55:26,319 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6935683364254793 [2023-11-29 22:55:26,319 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2243 transitions. [2023-11-29 22:55:26,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2243 transitions. [2023-11-29 22:55:26,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:55:26,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2243 transitions. [2023-11-29 22:55:26,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 67.96969696969697) internal successors, (2243), 33 states have internal predecessors, (2243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:55:26,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 98.0) internal successors, (3332), 34 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:55:26,326 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 98.0) internal successors, (3332), 34 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:55:26,327 INFO L307 CegarLoopForPetriNet]: 87 programPoint places, 140 predicate places. [2023-11-29 22:55:26,327 INFO L500 AbstractCegarLoop]: Abstraction has has 227 places, 5641 transitions, 178696 flow [2023-11-29 22:55:26,327 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 64.52631578947368) internal successors, (1226), 19 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:55:26,327 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:55:26,327 INFO L232 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] [2023-11-29 22:55:26,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 22:55:26,532 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:55:26,532 INFO L425 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:55:26,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:55:26,533 INFO L85 PathProgramCache]: Analyzing trace with hash 116467178, now seen corresponding path program 3 times [2023-11-29 22:55:26,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:55:26,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973045550] [2023-11-29 22:55:26,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:55:26,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:55:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:55:26,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:55:26,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:55:26,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973045550] [2023-11-29 22:55:26,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973045550] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:55:26,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906771641] [2023-11-29 22:55:26,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 22:55:26,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:55:26,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:55:26,754 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 22:55:26,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 22:55:26,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 22:55:26,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:55:26,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 22:55:26,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:55:27,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:55:27,002 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:55:27,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:55:27,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906771641] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:55:27,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:55:27,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 17 [2023-11-29 22:55:27,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289879894] [2023-11-29 22:55:27,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:55:27,448 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 22:55:27,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:55:27,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 22:55:27,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-11-29 22:55:27,449 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 98 [2023-11-29 22:55:27,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 5641 transitions, 178696 flow. Second operand has 17 states, 17 states have (on average 64.88235294117646) internal successors, (1103), 17 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:55:27,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:55:27,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 98 [2023-11-29 22:55:27,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:55:48,350 INFO L124 PetriNetUnfolderBase]: 11417/24633 cut-off events. [2023-11-29 22:55:48,351 INFO L125 PetriNetUnfolderBase]: For 356170/501031 co-relation queries the response was YES. [2023-11-29 22:55:48,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288229 conditions, 24633 events. 11417/24633 cut-off events. For 356170/501031 co-relation queries the response was YES. Maximal size of possible extension queue 1828. Compared 260156 event pairs, 701 based on Foata normal form. 487/21848 useless extension candidates. Maximal degree in co-relation 247079. Up to 16516 conditions per place. [2023-11-29 22:55:48,666 INFO L140 encePairwiseOnDemand]: 81/98 looper letters, 5119 selfloop transitions, 981 changer transitions 261/6452 dead transitions. [2023-11-29 22:55:48,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 6452 transitions, 217103 flow [2023-11-29 22:55:48,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 22:55:48,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-29 22:55:48,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1870 transitions. [2023-11-29 22:55:48,668 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6814868804664723 [2023-11-29 22:55:48,668 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1870 transitions. [2023-11-29 22:55:48,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1870 transitions. [2023-11-29 22:55:48,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:55:48,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1870 transitions. [2023-11-29 22:55:48,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 66.78571428571429) internal successors, (1870), 28 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:55:48,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 98.0) internal successors, (2842), 29 states have internal predecessors, (2842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:55:48,686 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 98.0) internal successors, (2842), 29 states have internal predecessors, (2842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:55:48,686 INFO L307 CegarLoopForPetriNet]: 87 programPoint places, 167 predicate places. [2023-11-29 22:55:48,686 INFO L500 AbstractCegarLoop]: Abstraction has has 254 places, 6452 transitions, 217103 flow [2023-11-29 22:55:48,686 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 64.88235294117646) internal successors, (1103), 17 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:55:48,686 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:55:48,686 INFO L232 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] [2023-11-29 22:55:48,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 22:55:48,892 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 22:55:48,892 INFO L425 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:55:48,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:55:48,892 INFO L85 PathProgramCache]: Analyzing trace with hash 989989365, now seen corresponding path program 1 times [2023-11-29 22:55:48,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:55:48,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434005850] [2023-11-29 22:55:48,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:55:48,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:55:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:55:49,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:55:49,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:55:49,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434005850] [2023-11-29 22:55:49,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434005850] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:55:49,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606340069] [2023-11-29 22:55:49,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:55:49,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:55:49,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:55:49,063 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 22:55:49,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 22:55:49,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:55:49,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 22:55:49,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:55:49,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:55:49,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:55:49,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:55:49,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606340069] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:55:49,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:55:49,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 10] total 20 [2023-11-29 22:55:49,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215688480] [2023-11-29 22:55:49,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:55:49,612 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 22:55:49,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:55:49,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 22:55:49,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2023-11-29 22:55:49,613 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 98 [2023-11-29 22:55:49,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 6452 transitions, 217103 flow. Second operand has 20 states, 20 states have (on average 72.3) internal successors, (1446), 20 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:55:49,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:55:49,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 98 [2023-11-29 22:55:49,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:56:31,435 INFO L124 PetriNetUnfolderBase]: 19014/36692 cut-off events. [2023-11-29 22:56:31,435 INFO L125 PetriNetUnfolderBase]: For 546703/565138 co-relation queries the response was YES. [2023-11-29 22:56:31,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491004 conditions, 36692 events. 19014/36692 cut-off events. For 546703/565138 co-relation queries the response was YES. Maximal size of possible extension queue 2590. Compared 373787 event pairs, 149 based on Foata normal form. 1099/33551 useless extension candidates. Maximal degree in co-relation 473692. Up to 26927 conditions per place. [2023-11-29 22:56:32,153 INFO L140 encePairwiseOnDemand]: 82/98 looper letters, 6574 selfloop transitions, 6330 changer transitions 182/13166 dead transitions. [2023-11-29 22:56:32,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 13166 transitions, 466597 flow [2023-11-29 22:56:32,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-11-29 22:56:32,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2023-11-29 22:56:32,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 4539 transitions. [2023-11-29 22:56:32,176 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7985573539760732 [2023-11-29 22:56:32,176 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 4539 transitions. [2023-11-29 22:56:32,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 4539 transitions. [2023-11-29 22:56:32,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:56:32,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 4539 transitions. [2023-11-29 22:56:32,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 78.25862068965517) internal successors, (4539), 58 states have internal predecessors, (4539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:56:32,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 98.0) internal successors, (5782), 59 states have internal predecessors, (5782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:56:32,197 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 98.0) internal successors, (5782), 59 states have internal predecessors, (5782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:56:32,198 INFO L307 CegarLoopForPetriNet]: 87 programPoint places, 212 predicate places. [2023-11-29 22:56:32,198 INFO L500 AbstractCegarLoop]: Abstraction has has 299 places, 13166 transitions, 466597 flow [2023-11-29 22:56:32,198 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 72.3) internal successors, (1446), 20 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:56:32,198 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:56:32,198 INFO L232 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] [2023-11-29 22:56:32,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 22:56:32,403 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 22:56:32,404 INFO L425 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:56:32,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:56:32,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1069981155, now seen corresponding path program 2 times [2023-11-29 22:56:32,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:56:32,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459333796] [2023-11-29 22:56:32,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:56:32,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:56:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:56:32,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:56:32,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:56:32,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459333796] [2023-11-29 22:56:32,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459333796] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:56:32,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314424912] [2023-11-29 22:56:32,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 22:56:32,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:56:32,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:56:32,546 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 22:56:32,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 22:56:32,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 22:56:32,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:56:32,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 22:56:32,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:56:32,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:56:32,723 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:56:33,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:56:33,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314424912] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:56:33,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:56:33,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 11] total 19 [2023-11-29 22:56:33,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608012318] [2023-11-29 22:56:33,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:56:33,035 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 22:56:33,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:56:33,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 22:56:33,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2023-11-29 22:56:33,036 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 98 [2023-11-29 22:56:33,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 13166 transitions, 466597 flow. Second operand has 19 states, 19 states have (on average 72.10526315789474) internal successors, (1370), 19 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:56:33,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:56:33,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 98 [2023-11-29 22:56:33,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:59:56,068 INFO L124 PetriNetUnfolderBase]: 33263/66286 cut-off events. [2023-11-29 22:59:56,068 INFO L125 PetriNetUnfolderBase]: For 1017928/1040103 co-relation queries the response was YES. [2023-11-29 22:59:56,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 930191 conditions, 66286 events. 33263/66286 cut-off events. For 1017928/1040103 co-relation queries the response was YES. Maximal size of possible extension queue 4621. Compared 741285 event pairs, 7 based on Foata normal form. 2085/60776 useless extension candidates. Maximal degree in co-relation 892752. Up to 48217 conditions per place. [2023-11-29 22:59:57,275 INFO L140 encePairwiseOnDemand]: 81/98 looper letters, 11628 selfloop transitions, 18649 changer transitions 241/30598 dead transitions. [2023-11-29 22:59:57,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 30598 transitions, 1131458 flow [2023-11-29 22:59:57,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2023-11-29 22:59:57,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2023-11-29 22:59:57,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 10488 transitions. [2023-11-29 22:59:57,282 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7986597624124276 [2023-11-29 22:59:57,283 INFO L72 ComplementDD]: Start complementDD. Operand 134 states and 10488 transitions. [2023-11-29 22:59:57,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 134 states and 10488 transitions. [2023-11-29 22:59:57,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:59:57,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 134 states and 10488 transitions. [2023-11-29 22:59:57,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 135 states, 134 states have (on average 78.26865671641791) internal successors, (10488), 134 states have internal predecessors, (10488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:59:57,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 135 states, 135 states have (on average 98.0) internal successors, (13230), 135 states have internal predecessors, (13230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:59:57,306 INFO L81 ComplementDD]: Finished complementDD. Result has 135 states, 135 states have (on average 98.0) internal successors, (13230), 135 states have internal predecessors, (13230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:59:57,306 INFO L307 CegarLoopForPetriNet]: 87 programPoint places, 345 predicate places. [2023-11-29 22:59:57,306 INFO L500 AbstractCegarLoop]: Abstraction has has 432 places, 30598 transitions, 1131458 flow [2023-11-29 22:59:57,307 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 72.10526315789474) internal successors, (1370), 19 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:59:57,307 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:59:57,307 INFO L232 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] [2023-11-29 22:59:57,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 22:59:57,513 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:59:57,514 INFO L425 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:59:57,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:59:57,514 INFO L85 PathProgramCache]: Analyzing trace with hash 546943045, now seen corresponding path program 3 times [2023-11-29 22:59:57,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:59:57,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615145782] [2023-11-29 22:59:57,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:59:57,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:59:57,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:59:57,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:59:57,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:59:57,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615145782] [2023-11-29 22:59:57,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615145782] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:59:57,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561289272] [2023-11-29 22:59:57,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 22:59:57,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:59:57,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:59:57,664 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 22:59:57,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 22:59:57,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 22:59:57,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:59:57,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 22:59:57,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:59:57,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:59:57,836 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:59:58,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:59:58,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561289272] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:59:58,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:59:58,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 11] total 19 [2023-11-29 22:59:58,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286471138] [2023-11-29 22:59:58,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:59:58,124 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 22:59:58,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:59:58,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 22:59:58,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-11-29 22:59:58,125 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 98 [2023-11-29 22:59:58,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 30598 transitions, 1131458 flow. Second operand has 19 states, 19 states have (on average 72.05263157894737) internal successors, (1369), 19 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:59:58,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:59:58,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 98 [2023-11-29 22:59:58,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-11-29 23:08:36,420 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-29 23:08:36,420 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-29 23:08:36,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2023-11-29 23:08:36,640 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-29 23:08:36,645 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 23:08:36,841 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:08:36,842 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (19states, 70/98 universal loopers) in iteration 20,while PetriNetUnfolder was constructing finite prefix that currently has 917434 conditions, 56839 events (32189/56838 cut-off events. For 807130/831565 co-relation queries the response was YES. Maximal size of possible extension queue 7945. Compared 630244 event pairs, 2 based on Foata normal form. 1879/57488 useless extension candidates. Maximal degree in co-relation 914371. Up to 45789 conditions per place.). [2023-11-29 23:08:36,843 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-29 23:08:36,843 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-29 23:08:36,843 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-29 23:08:36,844 INFO L457 BasicCegarLoop]: Path program histogram: [8, 4, 3, 3, 1, 1] [2023-11-29 23:08:36,847 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 23:08:36,847 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 23:08:36,851 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:08:36 BasicIcfg [2023-11-29 23:08:36,851 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 23:08:36,851 INFO L158 Benchmark]: Toolchain (without parser) took 838304.02ms. Allocated memory was 622.9MB in the beginning and 6.2GB in the end (delta: 5.6GB). Free memory was 575.4MB in the beginning and 3.2GB in the end (delta: -2.7GB). Peak memory consumption was 3.8GB. Max. memory is 16.0GB. [2023-11-29 23:08:36,852 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 354.4MB. Free memory is still 302.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-29 23:08:36,852 INFO L158 Benchmark]: CACSL2BoogieTranslator took 167.35ms. Allocated memory is still 622.9MB. Free memory was 575.4MB in the beginning and 563.7MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-11-29 23:08:36,852 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.34ms. Allocated memory is still 622.9MB. Free memory was 563.7MB in the beginning and 562.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 23:08:36,853 INFO L158 Benchmark]: Boogie Preprocessor took 18.56ms. Allocated memory is still 622.9MB. Free memory was 562.0MB in the beginning and 560.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 23:08:36,853 INFO L158 Benchmark]: RCFGBuilder took 417.96ms. Allocated memory is still 622.9MB. Free memory was 560.7MB in the beginning and 542.8MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-11-29 23:08:36,853 INFO L158 Benchmark]: TraceAbstraction took 837677.32ms. Allocated memory was 622.9MB in the beginning and 6.2GB in the end (delta: 5.6GB). Free memory was 542.4MB in the beginning and 3.2GB in the end (delta: -2.7GB). Peak memory consumption was 3.7GB. Max. memory is 16.0GB. [2023-11-29 23:08:36,855 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 354.4MB. Free memory is still 302.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 167.35ms. Allocated memory is still 622.9MB. Free memory was 575.4MB in the beginning and 563.7MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 19.34ms. Allocated memory is still 622.9MB. Free memory was 563.7MB in the beginning and 562.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 18.56ms. Allocated memory is still 622.9MB. Free memory was 562.0MB in the beginning and 560.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 417.96ms. Allocated memory is still 622.9MB. Free memory was 560.7MB in the beginning and 542.8MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 837677.32ms. Allocated memory was 622.9MB in the beginning and 6.2GB in the end (delta: 5.6GB). Free memory was 542.4MB in the beginning and 3.2GB in the end (delta: -2.7GB). Peak memory consumption was 3.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (19states, 70/98 universal loopers) in iteration 20,while PetriNetUnfolder was constructing finite prefix that currently has 917434 conditions, 56839 events (32189/56838 cut-off events. For 807130/831565 co-relation queries the response was YES. Maximal size of possible extension queue 7945. Compared 630244 event pairs, 2 based on Foata normal form. 1879/57488 useless extension candidates. Maximal degree in co-relation 914371. Up to 45789 conditions per place.). - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (19states, 70/98 universal loopers) in iteration 20,while PetriNetUnfolder was constructing finite prefix that currently has 917434 conditions, 56839 events (32189/56838 cut-off events. For 807130/831565 co-relation queries the response was YES. Maximal size of possible extension queue 7945. Compared 630244 event pairs, 2 based on Foata normal form. 1879/57488 useless extension candidates. Maximal degree in co-relation 914371. Up to 45789 conditions per place.). - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (19states, 70/98 universal loopers) in iteration 20,while PetriNetUnfolder was constructing finite prefix that currently has 917434 conditions, 56839 events (32189/56838 cut-off events. For 807130/831565 co-relation queries the response was YES. Maximal size of possible extension queue 7945. Compared 630244 event pairs, 2 based on Foata normal form. 1879/57488 useless extension candidates. Maximal degree in co-relation 914371. Up to 45789 conditions per place.). - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (19states, 70/98 universal loopers) in iteration 20,while PetriNetUnfolder was constructing finite prefix that currently has 917434 conditions, 56839 events (32189/56838 cut-off events. For 807130/831565 co-relation queries the response was YES. Maximal size of possible extension queue 7945. Compared 630244 event pairs, 2 based on Foata normal form. 1879/57488 useless extension candidates. Maximal degree in co-relation 914371. Up to 45789 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 117 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 837.6s, OverallIterations: 20, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 827.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 2784 SdHoareTripleChecker+Valid, 14.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2784 mSDsluCounter, 1570 SdHoareTripleChecker+Invalid, 13.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1309 mSDsCounter, 602 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8052 IncrementalHoareTripleChecker+Invalid, 8656 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 602 mSolverCounterUnsat, 261 mSDtfsCounter, 8052 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1588 GetRequests, 1023 SyntacticMatches, 6 SemanticMatches, 559 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22338 ImplicationChecksByTransitivity, 9.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1131458occurred in iteration=19, InterpolantAutomatonStates: 377, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 7.7s InterpolantComputationTime, 2015 NumberOfCodeBlocks, 2015 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 2511 ConstructedInterpolants, 0 QuantifiedInterpolants, 17303 SizeOfPredicates, 56 NumberOfNonLiveVariables, 1507 ConjunctsInSsa, 114 ConjunctsInUnsatCore, 34 InterpolantComputations, 13 PerfectInterpolantSequences, 16/51 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown