/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.fix-rcfgbuilder-lbe-0ccecc1-m [2023-11-10 12:22:50,410 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-10 12:22:50,466 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-10 12:22:50,486 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-10 12:22:50,487 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-10 12:22:50,487 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-10 12:22:50,488 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-10 12:22:50,488 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-10 12:22:50,488 INFO L153 SettingsManager]: * Use SBE=true [2023-11-10 12:22:50,488 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-10 12:22:50,489 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-10 12:22:50,489 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-10 12:22:50,489 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-10 12:22:50,489 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-10 12:22:50,490 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-10 12:22:50,490 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-10 12:22:50,490 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-10 12:22:50,490 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-10 12:22:50,491 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-10 12:22:50,491 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-10 12:22:50,491 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-10 12:22:50,493 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-10 12:22:50,493 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-10 12:22:50,493 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-10 12:22:50,493 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-10 12:22:50,494 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 12:22:50,494 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-10 12:22:50,494 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-10 12:22:50,494 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-10 12:22:50,494 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-10 12:22:50,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-10 12:22:50,495 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-10 12:22:50,495 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-10 12:22:50,495 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-10 12:22:50,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-10 12:22:50,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-10 12:22:50,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-10 12:22:50,713 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-10 12:22:50,713 INFO L274 PluginConnector]: CDTParser initialized [2023-11-10 12:22:50,714 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2023-11-10 12:22:51,759 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-10 12:22:51,927 INFO L384 CDTParser]: Found 1 translation units. [2023-11-10 12:22:51,928 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2023-11-10 12:22:51,933 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f36b94ffb/d2b3622fd1564d15b3a8fcbac97de5b8/FLAGf271218ee [2023-11-10 12:22:51,946 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f36b94ffb/d2b3622fd1564d15b3a8fcbac97de5b8 [2023-11-10 12:22:51,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-10 12:22:51,952 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-10 12:22:51,955 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-10 12:22:51,955 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-10 12:22:51,958 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-10 12:22:51,959 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:22:51" (1/1) ... [2023-11-10 12:22:51,960 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b235371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:22:51, skipping insertion in model container [2023-11-10 12:22:51,961 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:22:51" (1/1) ... [2023-11-10 12:22:51,988 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-10 12:22:52,115 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/parallel-ticket-4.wvr.c[3526,3539] [2023-11-10 12:22:52,123 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 12:22:52,130 INFO L202 MainTranslator]: Completed pre-run [2023-11-10 12:22:52,149 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/parallel-ticket-4.wvr.c[3526,3539] [2023-11-10 12:22:52,157 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 12:22:52,163 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-10 12:22:52,164 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-10 12:22:52,168 INFO L206 MainTranslator]: Completed translation [2023-11-10 12:22:52,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:22:52 WrapperNode [2023-11-10 12:22:52,169 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-10 12:22:52,170 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-10 12:22:52,170 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-10 12:22:52,170 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-10 12:22:52,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:22:52" (1/1) ... [2023-11-10 12:22:52,182 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:22:52" (1/1) ... [2023-11-10 12:22:52,204 INFO L138 Inliner]: procedures = 23, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 205 [2023-11-10 12:22:52,204 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-10 12:22:52,205 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-10 12:22:52,205 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-10 12:22:52,205 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-10 12:22:52,211 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:22:52" (1/1) ... [2023-11-10 12:22:52,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:22:52" (1/1) ... [2023-11-10 12:22:52,220 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:22:52" (1/1) ... [2023-11-10 12:22:52,221 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:22:52" (1/1) ... [2023-11-10 12:22:52,224 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:22:52" (1/1) ... [2023-11-10 12:22:52,226 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:22:52" (1/1) ... [2023-11-10 12:22:52,227 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:22:52" (1/1) ... [2023-11-10 12:22:52,228 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:22:52" (1/1) ... [2023-11-10 12:22:52,230 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-10 12:22:52,230 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-10 12:22:52,230 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-10 12:22:52,230 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-10 12:22:52,231 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:22:52" (1/1) ... [2023-11-10 12:22:52,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 12:22:52,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:22:52,257 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-10 12:22:52,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-10 12:22:52,286 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-10 12:22:52,286 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-10 12:22:52,286 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-10 12:22:52,287 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-10 12:22:52,287 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-10 12:22:52,287 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-10 12:22:52,288 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-10 12:22:52,288 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-10 12:22:52,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-10 12:22:52,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-10 12:22:52,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-10 12:22:52,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-10 12:22:52,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-10 12:22:52,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-10 12:22:52,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-10 12:22:52,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-10 12:22:52,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-10 12:22:52,291 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-10 12:22:52,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-10 12:22:52,394 INFO L236 CfgBuilder]: Building ICFG [2023-11-10 12:22:52,396 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-10 12:22:52,639 INFO L277 CfgBuilder]: Performing block encoding [2023-11-10 12:22:52,687 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-10 12:22:52,687 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-10 12:22:52,690 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:22:52 BoogieIcfgContainer [2023-11-10 12:22:52,690 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-10 12:22:52,691 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-10 12:22:52,692 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-10 12:22:52,694 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-10 12:22:52,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 12:22:51" (1/3) ... [2023-11-10 12:22:52,694 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17760df9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:22:52, skipping insertion in model container [2023-11-10 12:22:52,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:22:52" (2/3) ... [2023-11-10 12:22:52,695 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17760df9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:22:52, skipping insertion in model container [2023-11-10 12:22:52,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:22:52" (3/3) ... [2023-11-10 12:22:52,696 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2023-11-10 12:22:52,707 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-10 12:22:52,707 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-10 12:22:52,707 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-10 12:22:52,774 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-10 12:22:52,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 146 transitions, 320 flow [2023-11-10 12:22:52,857 INFO L124 PetriNetUnfolderBase]: 2/142 cut-off events. [2023-11-10 12:22:52,858 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-10 12:22:52,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 142 events. 2/142 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2023-11-10 12:22:52,861 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 146 transitions, 320 flow [2023-11-10 12:22:52,864 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 140 places, 129 transitions, 282 flow [2023-11-10 12:22:52,879 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 12:22:52,891 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@39e8d655, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 12:22:52,891 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-10 12:22:52,934 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 12:22:52,938 INFO L124 PetriNetUnfolderBase]: 2/128 cut-off events. [2023-11-10 12:22:52,938 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-10 12:22:52,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:22:52,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:22:52,939 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 12:22:52,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:22:52,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1304505853, now seen corresponding path program 1 times [2023-11-10 12:22:52,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:22:52,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847855569] [2023-11-10 12:22:52,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:22:52,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:22:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:22:54,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:22:54,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:22:54,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847855569] [2023-11-10 12:22:54,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847855569] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:22:54,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:22:54,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-10 12:22:54,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696306728] [2023-11-10 12:22:54,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:22:54,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-10 12:22:54,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:22:54,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-10 12:22:54,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-10 12:22:54,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 146 [2023-11-10 12:22:54,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 129 transitions, 282 flow. Second operand has 10 states, 10 states have (on average 104.1) internal successors, (1041), 10 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:54,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:22:54,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 146 [2023-11-10 12:22:54,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:22:55,357 INFO L124 PetriNetUnfolderBase]: 3366/6466 cut-off events. [2023-11-10 12:22:55,357 INFO L125 PetriNetUnfolderBase]: For 1096/1096 co-relation queries the response was YES. [2023-11-10 12:22:55,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12196 conditions, 6466 events. 3366/6466 cut-off events. For 1096/1096 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 48788 event pairs, 1223 based on Foata normal form. 3/6314 useless extension candidates. Maximal degree in co-relation 11697. Up to 2258 conditions per place. [2023-11-10 12:22:55,391 INFO L140 encePairwiseOnDemand]: 129/146 looper letters, 71 selfloop transitions, 13 changer transitions 12/180 dead transitions. [2023-11-10 12:22:55,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 180 transitions, 609 flow [2023-11-10 12:22:55,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-10 12:22:55,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-10 12:22:55,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1200 transitions. [2023-11-10 12:22:55,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7471980074719801 [2023-11-10 12:22:55,404 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1200 transitions. [2023-11-10 12:22:55,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1200 transitions. [2023-11-10 12:22:55,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:22:55,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1200 transitions. [2023-11-10 12:22:55,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 109.0909090909091) internal successors, (1200), 11 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:55,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 146.0) internal successors, (1752), 12 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:55,418 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 146.0) internal successors, (1752), 12 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:55,420 INFO L175 Difference]: Start difference. First operand has 140 places, 129 transitions, 282 flow. Second operand 11 states and 1200 transitions. [2023-11-10 12:22:55,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 180 transitions, 609 flow [2023-11-10 12:22:55,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 180 transitions, 571 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-10 12:22:55,435 INFO L231 Difference]: Finished difference. Result has 147 places, 132 transitions, 333 flow [2023-11-10 12:22:55,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=333, PETRI_PLACES=147, PETRI_TRANSITIONS=132} [2023-11-10 12:22:55,439 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, 7 predicate places. [2023-11-10 12:22:55,439 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 132 transitions, 333 flow [2023-11-10 12:22:55,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 104.1) internal successors, (1041), 10 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:55,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:22:55,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:22:55,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-10 12:22:55,440 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 12:22:55,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:22:55,441 INFO L85 PathProgramCache]: Analyzing trace with hash 2050021785, now seen corresponding path program 2 times [2023-11-10 12:22:55,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:22:55,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829279353] [2023-11-10 12:22:55,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:22:55,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:22:55,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:22:55,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:22:55,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:22:55,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829279353] [2023-11-10 12:22:55,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829279353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:22:55,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:22:55,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-10 12:22:55,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953268805] [2023-11-10 12:22:55,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:22:55,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-10 12:22:55,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:22:55,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-10 12:22:55,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-10 12:22:55,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 146 [2023-11-10 12:22:55,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 132 transitions, 333 flow. Second operand has 10 states, 10 states have (on average 104.1) internal successors, (1041), 10 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:55,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:22:55,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 146 [2023-11-10 12:22:55,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:22:56,727 INFO L124 PetriNetUnfolderBase]: 3250/6437 cut-off events. [2023-11-10 12:22:56,727 INFO L125 PetriNetUnfolderBase]: For 2154/2154 co-relation queries the response was YES. [2023-11-10 12:22:56,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13637 conditions, 6437 events. 3250/6437 cut-off events. For 2154/2154 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 50012 event pairs, 966 based on Foata normal form. 1/6304 useless extension candidates. Maximal degree in co-relation 13621. Up to 2937 conditions per place. [2023-11-10 12:22:56,765 INFO L140 encePairwiseOnDemand]: 134/146 looper letters, 50 selfloop transitions, 11 changer transitions 37/182 dead transitions. [2023-11-10 12:22:56,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 182 transitions, 683 flow [2023-11-10 12:22:56,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-10 12:22:56,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-10 12:22:56,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1093 transitions. [2023-11-10 12:22:56,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7486301369863013 [2023-11-10 12:22:56,768 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1093 transitions. [2023-11-10 12:22:56,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1093 transitions. [2023-11-10 12:22:56,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:22:56,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1093 transitions. [2023-11-10 12:22:56,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 109.3) internal successors, (1093), 10 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:56,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 146.0) internal successors, (1606), 11 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:56,773 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 146.0) internal successors, (1606), 11 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:56,773 INFO L175 Difference]: Start difference. First operand has 147 places, 132 transitions, 333 flow. Second operand 10 states and 1093 transitions. [2023-11-10 12:22:56,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 182 transitions, 683 flow [2023-11-10 12:22:56,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 182 transitions, 658 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-11-10 12:22:56,777 INFO L231 Difference]: Finished difference. Result has 149 places, 135 transitions, 379 flow [2023-11-10 12:22:56,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=379, PETRI_PLACES=149, PETRI_TRANSITIONS=135} [2023-11-10 12:22:56,778 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, 9 predicate places. [2023-11-10 12:22:56,778 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 135 transitions, 379 flow [2023-11-10 12:22:56,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 104.1) internal successors, (1041), 10 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:56,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:22:56,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:22:56,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-10 12:22:56,779 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 12:22:56,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:22:56,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1268459757, now seen corresponding path program 3 times [2023-11-10 12:22:56,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:22:56,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115195410] [2023-11-10 12:22:56,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:22:56,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:22:56,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:22:57,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:22:57,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:22:57,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115195410] [2023-11-10 12:22:57,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115195410] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:22:57,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:22:57,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-10 12:22:57,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359492502] [2023-11-10 12:22:57,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:22:57,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-10 12:22:57,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:22:57,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-10 12:22:57,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-10 12:22:57,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 146 [2023-11-10 12:22:57,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 135 transitions, 379 flow. Second operand has 9 states, 9 states have (on average 107.22222222222223) internal successors, (965), 9 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:57,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:22:57,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 146 [2023-11-10 12:22:57,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:22:57,462 INFO L124 PetriNetUnfolderBase]: 1511/3102 cut-off events. [2023-11-10 12:22:57,462 INFO L125 PetriNetUnfolderBase]: For 2399/2809 co-relation queries the response was YES. [2023-11-10 12:22:57,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7428 conditions, 3102 events. 1511/3102 cut-off events. For 2399/2809 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 21807 event pairs, 161 based on Foata normal form. 22/2937 useless extension candidates. Maximal degree in co-relation 7402. Up to 802 conditions per place. [2023-11-10 12:22:57,483 INFO L140 encePairwiseOnDemand]: 134/146 looper letters, 66 selfloop transitions, 35 changer transitions 1/199 dead transitions. [2023-11-10 12:22:57,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 199 transitions, 733 flow [2023-11-10 12:22:57,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-10 12:22:57,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-10 12:22:57,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1030 transitions. [2023-11-10 12:22:57,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7838660578386606 [2023-11-10 12:22:57,485 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1030 transitions. [2023-11-10 12:22:57,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1030 transitions. [2023-11-10 12:22:57,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:22:57,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1030 transitions. [2023-11-10 12:22:57,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 114.44444444444444) internal successors, (1030), 9 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:57,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 146.0) internal successors, (1460), 10 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:57,489 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 146.0) internal successors, (1460), 10 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:57,489 INFO L175 Difference]: Start difference. First operand has 149 places, 135 transitions, 379 flow. Second operand 9 states and 1030 transitions. [2023-11-10 12:22:57,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 199 transitions, 733 flow [2023-11-10 12:22:57,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 199 transitions, 688 flow, removed 15 selfloop flow, removed 8 redundant places. [2023-11-10 12:22:57,500 INFO L231 Difference]: Finished difference. Result has 146 places, 162 transitions, 476 flow [2023-11-10 12:22:57,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=476, PETRI_PLACES=146, PETRI_TRANSITIONS=162} [2023-11-10 12:22:57,501 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, 6 predicate places. [2023-11-10 12:22:57,501 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 162 transitions, 476 flow [2023-11-10 12:22:57,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 107.22222222222223) internal successors, (965), 9 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:57,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:22:57,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:22:57,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-10 12:22:57,502 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 12:22:57,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:22:57,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1037536729, now seen corresponding path program 4 times [2023-11-10 12:22:57,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:22:57,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189560247] [2023-11-10 12:22:57,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:22:57,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:22:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:22:57,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:22:57,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:22:57,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189560247] [2023-11-10 12:22:57,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189560247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:22:57,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:22:57,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 12:22:57,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888867869] [2023-11-10 12:22:57,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:22:57,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 12:22:57,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:22:57,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 12:22:57,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-10 12:22:57,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 146 [2023-11-10 12:22:57,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 162 transitions, 476 flow. Second operand has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:57,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:22:57,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 146 [2023-11-10 12:22:57,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:22:58,099 INFO L124 PetriNetUnfolderBase]: 2074/5092 cut-off events. [2023-11-10 12:22:58,099 INFO L125 PetriNetUnfolderBase]: For 1913/2226 co-relation queries the response was YES. [2023-11-10 12:22:58,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11679 conditions, 5092 events. 2074/5092 cut-off events. For 1913/2226 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 45277 event pairs, 464 based on Foata normal form. 184/5087 useless extension candidates. Maximal degree in co-relation 7775. Up to 1025 conditions per place. [2023-11-10 12:22:58,137 INFO L140 encePairwiseOnDemand]: 134/146 looper letters, 84 selfloop transitions, 45 changer transitions 0/226 dead transitions. [2023-11-10 12:22:58,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 226 transitions, 961 flow [2023-11-10 12:22:58,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-10 12:22:58,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-10 12:22:58,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 804 transitions. [2023-11-10 12:22:58,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.786692759295499 [2023-11-10 12:22:58,139 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 804 transitions. [2023-11-10 12:22:58,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 804 transitions. [2023-11-10 12:22:58,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:22:58,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 804 transitions. [2023-11-10 12:22:58,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.85714285714286) internal successors, (804), 7 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:58,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 146.0) internal successors, (1168), 8 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:58,142 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 146.0) internal successors, (1168), 8 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:58,142 INFO L175 Difference]: Start difference. First operand has 146 places, 162 transitions, 476 flow. Second operand 7 states and 804 transitions. [2023-11-10 12:22:58,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 226 transitions, 961 flow [2023-11-10 12:22:58,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 226 transitions, 952 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-10 12:22:58,149 INFO L231 Difference]: Finished difference. Result has 151 places, 195 transitions, 780 flow [2023-11-10 12:22:58,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=780, PETRI_PLACES=151, PETRI_TRANSITIONS=195} [2023-11-10 12:22:58,151 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, 11 predicate places. [2023-11-10 12:22:58,151 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 195 transitions, 780 flow [2023-11-10 12:22:58,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:58,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:22:58,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:22:58,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-10 12:22:58,152 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 12:22:58,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:22:58,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1240858043, now seen corresponding path program 5 times [2023-11-10 12:22:58,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:22:58,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290390036] [2023-11-10 12:22:58,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:22:58,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:22:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:22:58,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:22:58,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:22:58,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290390036] [2023-11-10 12:22:58,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290390036] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:22:58,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:22:58,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 12:22:58,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72329947] [2023-11-10 12:22:58,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:22:58,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 12:22:58,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:22:58,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 12:22:58,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-10 12:22:58,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 146 [2023-11-10 12:22:58,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 195 transitions, 780 flow. Second operand has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:58,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:22:58,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 146 [2023-11-10 12:22:58,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:22:58,863 INFO L124 PetriNetUnfolderBase]: 1991/4838 cut-off events. [2023-11-10 12:22:58,863 INFO L125 PetriNetUnfolderBase]: For 5771/6504 co-relation queries the response was YES. [2023-11-10 12:22:58,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13740 conditions, 4838 events. 1991/4838 cut-off events. For 5771/6504 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 42047 event pairs, 470 based on Foata normal form. 359/5010 useless extension candidates. Maximal degree in co-relation 8956. Up to 946 conditions per place. [2023-11-10 12:22:58,903 INFO L140 encePairwiseOnDemand]: 134/146 looper letters, 86 selfloop transitions, 54 changer transitions 0/237 dead transitions. [2023-11-10 12:22:58,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 237 transitions, 1255 flow [2023-11-10 12:22:58,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-10 12:22:58,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-10 12:22:58,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 806 transitions. [2023-11-10 12:22:58,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7886497064579256 [2023-11-10 12:22:58,905 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 806 transitions. [2023-11-10 12:22:58,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 806 transitions. [2023-11-10 12:22:58,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:22:58,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 806 transitions. [2023-11-10 12:22:58,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 115.14285714285714) internal successors, (806), 7 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:58,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 146.0) internal successors, (1168), 8 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:58,909 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 146.0) internal successors, (1168), 8 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:58,909 INFO L175 Difference]: Start difference. First operand has 151 places, 195 transitions, 780 flow. Second operand 7 states and 806 transitions. [2023-11-10 12:22:58,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 237 transitions, 1255 flow [2023-11-10 12:22:58,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 237 transitions, 1236 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-10 12:22:58,917 INFO L231 Difference]: Finished difference. Result has 156 places, 205 transitions, 1001 flow [2023-11-10 12:22:58,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1001, PETRI_PLACES=156, PETRI_TRANSITIONS=205} [2023-11-10 12:22:58,918 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, 16 predicate places. [2023-11-10 12:22:58,918 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 205 transitions, 1001 flow [2023-11-10 12:22:58,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:58,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:22:58,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:22:58,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-10 12:22:58,919 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 12:22:58,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:22:58,919 INFO L85 PathProgramCache]: Analyzing trace with hash -577907899, now seen corresponding path program 6 times [2023-11-10 12:22:58,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:22:58,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338472428] [2023-11-10 12:22:58,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:22:58,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:22:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:22:59,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:22:59,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:22:59,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338472428] [2023-11-10 12:22:59,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338472428] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:22:59,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:22:59,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-10 12:22:59,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232645742] [2023-11-10 12:22:59,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:22:59,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-10 12:22:59,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:22:59,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-10 12:22:59,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-10 12:22:59,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 146 [2023-11-10 12:22:59,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 205 transitions, 1001 flow. Second operand has 8 states, 8 states have (on average 107.75) internal successors, (862), 8 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:59,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:22:59,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 146 [2023-11-10 12:22:59,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:22:59,597 INFO L124 PetriNetUnfolderBase]: 2189/5274 cut-off events. [2023-11-10 12:22:59,597 INFO L125 PetriNetUnfolderBase]: For 10717/11821 co-relation queries the response was YES. [2023-11-10 12:22:59,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16907 conditions, 5274 events. 2189/5274 cut-off events. For 10717/11821 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 46306 event pairs, 372 based on Foata normal form. 258/5287 useless extension candidates. Maximal degree in co-relation 10953. Up to 1316 conditions per place. [2023-11-10 12:22:59,636 INFO L140 encePairwiseOnDemand]: 134/146 looper letters, 83 selfloop transitions, 92 changer transitions 2/274 dead transitions. [2023-11-10 12:22:59,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 274 transitions, 1693 flow [2023-11-10 12:22:59,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-10 12:22:59,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-10 12:22:59,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 931 transitions. [2023-11-10 12:22:59,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7970890410958904 [2023-11-10 12:22:59,638 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 931 transitions. [2023-11-10 12:22:59,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 931 transitions. [2023-11-10 12:22:59,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:22:59,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 931 transitions. [2023-11-10 12:22:59,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 116.375) internal successors, (931), 8 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:59,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 146.0) internal successors, (1314), 9 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:59,642 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 146.0) internal successors, (1314), 9 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:59,642 INFO L175 Difference]: Start difference. First operand has 156 places, 205 transitions, 1001 flow. Second operand 8 states and 931 transitions. [2023-11-10 12:22:59,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 274 transitions, 1693 flow [2023-11-10 12:22:59,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 274 transitions, 1622 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-10 12:22:59,651 INFO L231 Difference]: Finished difference. Result has 161 places, 232 transitions, 1379 flow [2023-11-10 12:22:59,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1379, PETRI_PLACES=161, PETRI_TRANSITIONS=232} [2023-11-10 12:22:59,652 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, 21 predicate places. [2023-11-10 12:22:59,652 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 232 transitions, 1379 flow [2023-11-10 12:22:59,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 107.75) internal successors, (862), 8 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:59,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:22:59,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:22:59,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-10 12:22:59,653 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 12:22:59,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:22:59,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1807448875, now seen corresponding path program 7 times [2023-11-10 12:22:59,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:22:59,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624669692] [2023-11-10 12:22:59,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:22:59,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:22:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:22:59,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:22:59,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:22:59,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624669692] [2023-11-10 12:22:59,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624669692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:22:59,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:22:59,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 12:22:59,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389582614] [2023-11-10 12:22:59,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:22:59,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 12:22:59,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:22:59,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 12:22:59,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-10 12:22:59,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 146 [2023-11-10 12:22:59,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 232 transitions, 1379 flow. Second operand has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:59,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:22:59,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 146 [2023-11-10 12:22:59,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:23:00,301 INFO L124 PetriNetUnfolderBase]: 1998/5142 cut-off events. [2023-11-10 12:23:00,301 INFO L125 PetriNetUnfolderBase]: For 14365/15028 co-relation queries the response was YES. [2023-11-10 12:23:00,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17388 conditions, 5142 events. 1998/5142 cut-off events. For 14365/15028 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 46801 event pairs, 567 based on Foata normal form. 293/5195 useless extension candidates. Maximal degree in co-relation 5299. Up to 1204 conditions per place. [2023-11-10 12:23:00,337 INFO L140 encePairwiseOnDemand]: 134/146 looper letters, 102 selfloop transitions, 70 changer transitions 2/271 dead transitions. [2023-11-10 12:23:00,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 271 transitions, 1948 flow [2023-11-10 12:23:00,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-10 12:23:00,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-10 12:23:00,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 805 transitions. [2023-11-10 12:23:00,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7876712328767124 [2023-11-10 12:23:00,339 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 805 transitions. [2023-11-10 12:23:00,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 805 transitions. [2023-11-10 12:23:00,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:23:00,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 805 transitions. [2023-11-10 12:23:00,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:00,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 146.0) internal successors, (1168), 8 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:00,342 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 146.0) internal successors, (1168), 8 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:00,342 INFO L175 Difference]: Start difference. First operand has 161 places, 232 transitions, 1379 flow. Second operand 7 states and 805 transitions. [2023-11-10 12:23:00,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 271 transitions, 1948 flow [2023-11-10 12:23:00,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 271 transitions, 1936 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-10 12:23:00,361 INFO L231 Difference]: Finished difference. Result has 167 places, 240 transitions, 1658 flow [2023-11-10 12:23:00,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=1355, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1658, PETRI_PLACES=167, PETRI_TRANSITIONS=240} [2023-11-10 12:23:00,361 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, 27 predicate places. [2023-11-10 12:23:00,362 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 240 transitions, 1658 flow [2023-11-10 12:23:00,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:00,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:23:00,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:23:00,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-10 12:23:00,362 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 12:23:00,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:23:00,363 INFO L85 PathProgramCache]: Analyzing trace with hash 17716259, now seen corresponding path program 8 times [2023-11-10 12:23:00,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:23:00,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375840626] [2023-11-10 12:23:00,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:23:00,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:23:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:23:00,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:23:00,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:23:00,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375840626] [2023-11-10 12:23:00,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375840626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:23:00,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:23:00,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 12:23:00,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881621133] [2023-11-10 12:23:00,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:23:00,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 12:23:00,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:23:00,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 12:23:00,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-10 12:23:00,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 146 [2023-11-10 12:23:00,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 240 transitions, 1658 flow. Second operand has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:00,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:23:00,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 146 [2023-11-10 12:23:00,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:23:00,817 INFO L124 PetriNetUnfolderBase]: 1068/3086 cut-off events. [2023-11-10 12:23:00,817 INFO L125 PetriNetUnfolderBase]: For 12363/12826 co-relation queries the response was YES. [2023-11-10 12:23:00,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11390 conditions, 3086 events. 1068/3086 cut-off events. For 12363/12826 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 25591 event pairs, 198 based on Foata normal form. 250/3204 useless extension candidates. Maximal degree in co-relation 4335. Up to 764 conditions per place. [2023-11-10 12:23:00,837 INFO L140 encePairwiseOnDemand]: 134/146 looper letters, 98 selfloop transitions, 78 changer transitions 0/269 dead transitions. [2023-11-10 12:23:00,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 269 transitions, 2214 flow [2023-11-10 12:23:00,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-10 12:23:00,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-10 12:23:00,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 803 transitions. [2023-11-10 12:23:00,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7857142857142857 [2023-11-10 12:23:00,839 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 803 transitions. [2023-11-10 12:23:00,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 803 transitions. [2023-11-10 12:23:00,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:23:00,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 803 transitions. [2023-11-10 12:23:00,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:00,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 146.0) internal successors, (1168), 8 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:00,842 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 146.0) internal successors, (1168), 8 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:00,842 INFO L175 Difference]: Start difference. First operand has 167 places, 240 transitions, 1658 flow. Second operand 7 states and 803 transitions. [2023-11-10 12:23:00,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 269 transitions, 2214 flow [2023-11-10 12:23:00,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 269 transitions, 2095 flow, removed 4 selfloop flow, removed 8 redundant places. [2023-11-10 12:23:00,854 INFO L231 Difference]: Finished difference. Result has 167 places, 245 transitions, 1874 flow [2023-11-10 12:23:00,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=1410, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1874, PETRI_PLACES=167, PETRI_TRANSITIONS=245} [2023-11-10 12:23:00,855 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, 27 predicate places. [2023-11-10 12:23:00,855 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 245 transitions, 1874 flow [2023-11-10 12:23:00,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:00,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:23:00,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:23:00,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-10 12:23:00,856 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 12:23:00,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:23:00,856 INFO L85 PathProgramCache]: Analyzing trace with hash 81490179, now seen corresponding path program 9 times [2023-11-10 12:23:00,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:23:00,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150801929] [2023-11-10 12:23:00,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:23:00,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:23:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:23:01,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:23:01,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:23:01,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150801929] [2023-11-10 12:23:01,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150801929] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:23:01,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:23:01,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-10 12:23:01,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146110903] [2023-11-10 12:23:01,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:23:01,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-10 12:23:01,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:23:01,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-10 12:23:01,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-10 12:23:01,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 146 [2023-11-10 12:23:01,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 245 transitions, 1874 flow. Second operand has 8 states, 8 states have (on average 107.75) internal successors, (862), 8 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:01,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:23:01,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 146 [2023-11-10 12:23:01,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:23:01,378 INFO L124 PetriNetUnfolderBase]: 1073/3089 cut-off events. [2023-11-10 12:23:01,378 INFO L125 PetriNetUnfolderBase]: For 14922/15658 co-relation queries the response was YES. [2023-11-10 12:23:01,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11999 conditions, 3089 events. 1073/3089 cut-off events. For 14922/15658 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 25555 event pairs, 151 based on Foata normal form. 318/3271 useless extension candidates. Maximal degree in co-relation 3696. Up to 651 conditions per place. [2023-11-10 12:23:01,399 INFO L140 encePairwiseOnDemand]: 134/146 looper letters, 85 selfloop transitions, 116 changer transitions 2/296 dead transitions. [2023-11-10 12:23:01,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 296 transitions, 2586 flow [2023-11-10 12:23:01,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-10 12:23:01,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-10 12:23:01,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 929 transitions. [2023-11-10 12:23:01,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7953767123287672 [2023-11-10 12:23:01,401 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 929 transitions. [2023-11-10 12:23:01,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 929 transitions. [2023-11-10 12:23:01,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:23:01,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 929 transitions. [2023-11-10 12:23:01,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 116.125) internal successors, (929), 8 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:01,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 146.0) internal successors, (1314), 9 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:01,405 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 146.0) internal successors, (1314), 9 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:01,405 INFO L175 Difference]: Start difference. First operand has 167 places, 245 transitions, 1874 flow. Second operand 8 states and 929 transitions. [2023-11-10 12:23:01,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 296 transitions, 2586 flow [2023-11-10 12:23:01,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 296 transitions, 2492 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-10 12:23:01,418 INFO L231 Difference]: Finished difference. Result has 171 places, 252 transitions, 2163 flow [2023-11-10 12:23:01,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=1788, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2163, PETRI_PLACES=171, PETRI_TRANSITIONS=252} [2023-11-10 12:23:01,419 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, 31 predicate places. [2023-11-10 12:23:01,419 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 252 transitions, 2163 flow [2023-11-10 12:23:01,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 107.75) internal successors, (862), 8 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:01,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:23:01,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:23:01,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-10 12:23:01,420 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 12:23:01,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:23:01,421 INFO L85 PathProgramCache]: Analyzing trace with hash -2096925629, now seen corresponding path program 10 times [2023-11-10 12:23:01,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:23:01,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049487398] [2023-11-10 12:23:01,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:23:01,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:23:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:23:01,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:23:01,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:23:01,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049487398] [2023-11-10 12:23:01,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049487398] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:23:01,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:23:01,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-10 12:23:01,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640745716] [2023-11-10 12:23:01,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:23:01,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-10 12:23:01,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:23:01,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-10 12:23:01,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-10 12:23:01,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 146 [2023-11-10 12:23:01,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 252 transitions, 2163 flow. Second operand has 10 states, 10 states have (on average 98.7) internal successors, (987), 10 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:01,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:23:01,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 146 [2023-11-10 12:23:01,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:23:02,262 INFO L124 PetriNetUnfolderBase]: 1898/4362 cut-off events. [2023-11-10 12:23:02,262 INFO L125 PetriNetUnfolderBase]: For 24597/24597 co-relation queries the response was YES. [2023-11-10 12:23:02,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19399 conditions, 4362 events. 1898/4362 cut-off events. For 24597/24597 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 34148 event pairs, 322 based on Foata normal form. 66/4318 useless extension candidates. Maximal degree in co-relation 11448. Up to 1242 conditions per place. [2023-11-10 12:23:02,294 INFO L140 encePairwiseOnDemand]: 134/146 looper letters, 156 selfloop transitions, 133 changer transitions 4/371 dead transitions. [2023-11-10 12:23:02,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 371 transitions, 3508 flow [2023-11-10 12:23:02,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-10 12:23:02,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-10 12:23:02,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1201 transitions. [2023-11-10 12:23:02,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7478206724782067 [2023-11-10 12:23:02,297 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1201 transitions. [2023-11-10 12:23:02,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1201 transitions. [2023-11-10 12:23:02,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:23:02,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1201 transitions. [2023-11-10 12:23:02,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 109.18181818181819) internal successors, (1201), 11 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:02,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 146.0) internal successors, (1752), 12 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:02,302 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 146.0) internal successors, (1752), 12 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:02,302 INFO L175 Difference]: Start difference. First operand has 171 places, 252 transitions, 2163 flow. Second operand 11 states and 1201 transitions. [2023-11-10 12:23:02,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 371 transitions, 3508 flow [2023-11-10 12:23:02,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 371 transitions, 3302 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-11-10 12:23:02,325 INFO L231 Difference]: Finished difference. Result has 177 places, 269 transitions, 2564 flow [2023-11-10 12:23:02,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=1991, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2564, PETRI_PLACES=177, PETRI_TRANSITIONS=269} [2023-11-10 12:23:02,327 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, 37 predicate places. [2023-11-10 12:23:02,328 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 269 transitions, 2564 flow [2023-11-10 12:23:02,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 98.7) internal successors, (987), 10 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:02,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:23:02,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:23:02,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-10 12:23:02,329 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 12:23:02,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:23:02,329 INFO L85 PathProgramCache]: Analyzing trace with hash -241190529, now seen corresponding path program 11 times [2023-11-10 12:23:02,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:23:02,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077777944] [2023-11-10 12:23:02,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:23:02,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:23:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:23:02,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:23:02,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:23:02,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077777944] [2023-11-10 12:23:02,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077777944] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:23:02,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:23:02,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-10 12:23:02,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330035951] [2023-11-10 12:23:02,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:23:02,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-10 12:23:02,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:23:02,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-10 12:23:02,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-10 12:23:02,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 146 [2023-11-10 12:23:02,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 269 transitions, 2564 flow. Second operand has 10 states, 10 states have (on average 98.7) internal successors, (987), 10 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:02,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:23:02,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 146 [2023-11-10 12:23:02,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:23:03,121 INFO L124 PetriNetUnfolderBase]: 1752/4205 cut-off events. [2023-11-10 12:23:03,122 INFO L125 PetriNetUnfolderBase]: For 25258/25258 co-relation queries the response was YES. [2023-11-10 12:23:03,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19122 conditions, 4205 events. 1752/4205 cut-off events. For 25258/25258 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 33529 event pairs, 263 based on Foata normal form. 118/4234 useless extension candidates. Maximal degree in co-relation 6088. Up to 1161 conditions per place. [2023-11-10 12:23:03,153 INFO L140 encePairwiseOnDemand]: 134/146 looper letters, 155 selfloop transitions, 139 changer transitions 16/388 dead transitions. [2023-11-10 12:23:03,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 388 transitions, 3920 flow [2023-11-10 12:23:03,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-10 12:23:03,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-10 12:23:03,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1204 transitions. [2023-11-10 12:23:03,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7496886674968867 [2023-11-10 12:23:03,156 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1204 transitions. [2023-11-10 12:23:03,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1204 transitions. [2023-11-10 12:23:03,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:23:03,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1204 transitions. [2023-11-10 12:23:03,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 109.45454545454545) internal successors, (1204), 11 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:03,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 146.0) internal successors, (1752), 12 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:03,160 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 146.0) internal successors, (1752), 12 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:03,160 INFO L175 Difference]: Start difference. First operand has 177 places, 269 transitions, 2564 flow. Second operand 11 states and 1204 transitions. [2023-11-10 12:23:03,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 388 transitions, 3920 flow [2023-11-10 12:23:03,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 388 transitions, 3729 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-10 12:23:03,183 INFO L231 Difference]: Finished difference. Result has 184 places, 275 transitions, 2785 flow [2023-11-10 12:23:03,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=2390, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2785, PETRI_PLACES=184, PETRI_TRANSITIONS=275} [2023-11-10 12:23:03,183 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, 44 predicate places. [2023-11-10 12:23:03,184 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 275 transitions, 2785 flow [2023-11-10 12:23:03,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 98.7) internal successors, (987), 10 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:03,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:23:03,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:23:03,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-10 12:23:03,184 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 12:23:03,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:23:03,185 INFO L85 PathProgramCache]: Analyzing trace with hash 434761461, now seen corresponding path program 12 times [2023-11-10 12:23:03,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:23:03,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121742832] [2023-11-10 12:23:03,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:23:03,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:23:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:23:03,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:23:03,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:23:03,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121742832] [2023-11-10 12:23:03,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121742832] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:23:03,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:23:03,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-10 12:23:03,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840444374] [2023-11-10 12:23:03,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:23:03,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-10 12:23:03,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:23:03,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-10 12:23:03,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-10 12:23:03,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 146 [2023-11-10 12:23:03,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 275 transitions, 2785 flow. Second operand has 10 states, 10 states have (on average 98.7) internal successors, (987), 10 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:03,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:23:03,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 146 [2023-11-10 12:23:03,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:23:03,879 INFO L124 PetriNetUnfolderBase]: 1052/2900 cut-off events. [2023-11-10 12:23:03,879 INFO L125 PetriNetUnfolderBase]: For 17544/17544 co-relation queries the response was YES. [2023-11-10 12:23:03,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13694 conditions, 2900 events. 1052/2900 cut-off events. For 17544/17544 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 23191 event pairs, 138 based on Foata normal form. 159/2991 useless extension candidates. Maximal degree in co-relation 7539. Up to 658 conditions per place. [2023-11-10 12:23:03,898 INFO L140 encePairwiseOnDemand]: 134/146 looper letters, 131 selfloop transitions, 133 changer transitions 38/380 dead transitions. [2023-11-10 12:23:03,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 380 transitions, 4181 flow [2023-11-10 12:23:03,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-10 12:23:03,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-10 12:23:03,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1193 transitions. [2023-11-10 12:23:03,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7428393524283935 [2023-11-10 12:23:03,901 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1193 transitions. [2023-11-10 12:23:03,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1193 transitions. [2023-11-10 12:23:03,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:23:03,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1193 transitions. [2023-11-10 12:23:03,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 108.45454545454545) internal successors, (1193), 11 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:03,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 146.0) internal successors, (1752), 12 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:03,906 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 146.0) internal successors, (1752), 12 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:03,906 INFO L175 Difference]: Start difference. First operand has 184 places, 275 transitions, 2785 flow. Second operand 11 states and 1193 transitions. [2023-11-10 12:23:03,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 380 transitions, 4181 flow [2023-11-10 12:23:03,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 380 transitions, 3919 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-10 12:23:03,928 INFO L231 Difference]: Finished difference. Result has 188 places, 267 transitions, 2752 flow [2023-11-10 12:23:03,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=2513, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2752, PETRI_PLACES=188, PETRI_TRANSITIONS=267} [2023-11-10 12:23:03,930 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, 48 predicate places. [2023-11-10 12:23:03,930 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 267 transitions, 2752 flow [2023-11-10 12:23:03,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 98.7) internal successors, (987), 10 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:03,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:23:03,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:23:03,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-10 12:23:03,940 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 12:23:03,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:23:03,941 INFO L85 PathProgramCache]: Analyzing trace with hash 2035635307, now seen corresponding path program 13 times [2023-11-10 12:23:03,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:23:03,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558944388] [2023-11-10 12:23:03,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:23:03,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:23:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:23:04,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:23:04,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:23:04,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558944388] [2023-11-10 12:23:04,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558944388] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:23:04,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:23:04,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-10 12:23:04,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144266997] [2023-11-10 12:23:04,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:23:04,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-10 12:23:04,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:23:04,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-10 12:23:04,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-10 12:23:04,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 146 [2023-11-10 12:23:04,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 267 transitions, 2752 flow. Second operand has 10 states, 10 states have (on average 98.7) internal successors, (987), 10 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:04,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:23:04,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 146 [2023-11-10 12:23:04,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:23:04,636 INFO L124 PetriNetUnfolderBase]: 903/2527 cut-off events. [2023-11-10 12:23:04,637 INFO L125 PetriNetUnfolderBase]: For 17320/17320 co-relation queries the response was YES. [2023-11-10 12:23:04,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11861 conditions, 2527 events. 903/2527 cut-off events. For 17320/17320 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 19420 event pairs, 186 based on Foata normal form. 18/2471 useless extension candidates. Maximal degree in co-relation 4995. Up to 512 conditions per place. [2023-11-10 12:23:04,653 INFO L140 encePairwiseOnDemand]: 134/146 looper letters, 150 selfloop transitions, 113 changer transitions 40/381 dead transitions. [2023-11-10 12:23:04,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 381 transitions, 4339 flow [2023-11-10 12:23:04,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-10 12:23:04,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-10 12:23:04,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1181 transitions. [2023-11-10 12:23:04,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7353673723536738 [2023-11-10 12:23:04,657 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1181 transitions. [2023-11-10 12:23:04,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1181 transitions. [2023-11-10 12:23:04,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:23:04,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1181 transitions. [2023-11-10 12:23:04,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 107.36363636363636) internal successors, (1181), 11 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:04,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 146.0) internal successors, (1752), 12 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:04,661 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 146.0) internal successors, (1752), 12 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:04,661 INFO L175 Difference]: Start difference. First operand has 188 places, 267 transitions, 2752 flow. Second operand 11 states and 1181 transitions. [2023-11-10 12:23:04,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 381 transitions, 4339 flow [2023-11-10 12:23:04,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 381 transitions, 4192 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-10 12:23:04,684 INFO L231 Difference]: Finished difference. Result has 196 places, 271 transitions, 3064 flow [2023-11-10 12:23:04,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=2634, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3064, PETRI_PLACES=196, PETRI_TRANSITIONS=271} [2023-11-10 12:23:04,685 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, 56 predicate places. [2023-11-10 12:23:04,685 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 271 transitions, 3064 flow [2023-11-10 12:23:04,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 98.7) internal successors, (987), 10 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:04,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:23:04,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:23:04,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-10 12:23:04,686 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 12:23:04,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:23:04,686 INFO L85 PathProgramCache]: Analyzing trace with hash 113589515, now seen corresponding path program 14 times [2023-11-10 12:23:04,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:23:04,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917352756] [2023-11-10 12:23:04,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:23:04,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:23:04,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:23:04,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:23:04,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:23:04,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917352756] [2023-11-10 12:23:04,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917352756] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:23:04,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:23:04,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-10 12:23:04,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990313875] [2023-11-10 12:23:04,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:23:04,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-10 12:23:04,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:23:04,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-10 12:23:04,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-10 12:23:04,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 146 [2023-11-10 12:23:04,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 271 transitions, 3064 flow. Second operand has 9 states, 9 states have (on average 99.22222222222223) internal successors, (893), 9 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:04,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:23:04,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 146 [2023-11-10 12:23:04,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:23:05,358 INFO L124 PetriNetUnfolderBase]: 791/2262 cut-off events. [2023-11-10 12:23:05,358 INFO L125 PetriNetUnfolderBase]: For 19087/19087 co-relation queries the response was YES. [2023-11-10 12:23:05,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11197 conditions, 2262 events. 791/2262 cut-off events. For 19087/19087 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 17054 event pairs, 147 based on Foata normal form. 7/2190 useless extension candidates. Maximal degree in co-relation 8769. Up to 544 conditions per place. [2023-11-10 12:23:05,377 INFO L140 encePairwiseOnDemand]: 134/146 looper letters, 144 selfloop transitions, 117 changer transitions 5/344 dead transitions. [2023-11-10 12:23:05,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 344 transitions, 4027 flow [2023-11-10 12:23:05,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-10 12:23:05,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-10 12:23:05,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1079 transitions. [2023-11-10 12:23:05,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.739041095890411 [2023-11-10 12:23:05,380 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1079 transitions. [2023-11-10 12:23:05,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1079 transitions. [2023-11-10 12:23:05,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:23:05,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1079 transitions. [2023-11-10 12:23:05,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 107.9) internal successors, (1079), 10 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:05,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 146.0) internal successors, (1606), 11 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:05,385 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 146.0) internal successors, (1606), 11 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:05,385 INFO L175 Difference]: Start difference. First operand has 196 places, 271 transitions, 3064 flow. Second operand 10 states and 1079 transitions. [2023-11-10 12:23:05,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 344 transitions, 4027 flow [2023-11-10 12:23:05,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 344 transitions, 3961 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-11-10 12:23:05,413 INFO L231 Difference]: Finished difference. Result has 201 places, 275 transitions, 3314 flow [2023-11-10 12:23:05,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=2997, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3314, PETRI_PLACES=201, PETRI_TRANSITIONS=275} [2023-11-10 12:23:05,414 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, 61 predicate places. [2023-11-10 12:23:05,414 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 275 transitions, 3314 flow [2023-11-10 12:23:05,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 99.22222222222223) internal successors, (893), 9 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:05,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:23:05,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:23:05,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-10 12:23:05,415 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 12:23:05,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:23:05,415 INFO L85 PathProgramCache]: Analyzing trace with hash 489516121, now seen corresponding path program 15 times [2023-11-10 12:23:05,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:23:05,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67285919] [2023-11-10 12:23:05,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:23:05,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:23:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:23:05,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:23:05,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:23:05,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67285919] [2023-11-10 12:23:05,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67285919] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:23:05,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:23:05,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-10 12:23:05,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534973982] [2023-11-10 12:23:05,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:23:05,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-10 12:23:05,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:23:05,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-10 12:23:05,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-10 12:23:05,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 146 [2023-11-10 12:23:05,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 275 transitions, 3314 flow. Second operand has 10 states, 10 states have (on average 98.7) internal successors, (987), 10 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:05,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:23:05,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 146 [2023-11-10 12:23:05,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:23:06,079 INFO L124 PetriNetUnfolderBase]: 791/2265 cut-off events. [2023-11-10 12:23:06,079 INFO L125 PetriNetUnfolderBase]: For 22050/22050 co-relation queries the response was YES. [2023-11-10 12:23:06,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11715 conditions, 2265 events. 791/2265 cut-off events. For 22050/22050 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 17142 event pairs, 149 based on Foata normal form. 7/2190 useless extension candidates. Maximal degree in co-relation 9180. Up to 500 conditions per place. [2023-11-10 12:23:06,095 INFO L140 encePairwiseOnDemand]: 134/146 looper letters, 158 selfloop transitions, 114 changer transitions 11/361 dead transitions. [2023-11-10 12:23:06,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 361 transitions, 4373 flow [2023-11-10 12:23:06,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-10 12:23:06,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-10 12:23:06,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1186 transitions. [2023-11-10 12:23:06,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7384806973848069 [2023-11-10 12:23:06,097 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1186 transitions. [2023-11-10 12:23:06,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1186 transitions. [2023-11-10 12:23:06,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:23:06,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1186 transitions. [2023-11-10 12:23:06,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 107.81818181818181) internal successors, (1186), 11 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:06,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 146.0) internal successors, (1752), 12 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:06,100 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 146.0) internal successors, (1752), 12 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:06,100 INFO L175 Difference]: Start difference. First operand has 201 places, 275 transitions, 3314 flow. Second operand 11 states and 1186 transitions. [2023-11-10 12:23:06,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 361 transitions, 4373 flow [2023-11-10 12:23:06,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 361 transitions, 4233 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-10 12:23:06,129 INFO L231 Difference]: Finished difference. Result has 206 places, 272 transitions, 3342 flow [2023-11-10 12:23:06,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=3176, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3342, PETRI_PLACES=206, PETRI_TRANSITIONS=272} [2023-11-10 12:23:06,130 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, 66 predicate places. [2023-11-10 12:23:06,130 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 272 transitions, 3342 flow [2023-11-10 12:23:06,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 98.7) internal successors, (987), 10 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:06,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:23:06,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:23:06,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-10 12:23:06,131 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 12:23:06,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:23:06,131 INFO L85 PathProgramCache]: Analyzing trace with hash -896109847, now seen corresponding path program 16 times [2023-11-10 12:23:06,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:23:06,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911719695] [2023-11-10 12:23:06,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:23:06,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:23:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:23:06,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:23:06,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:23:06,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911719695] [2023-11-10 12:23:06,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911719695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:23:06,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:23:06,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-10 12:23:06,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905589865] [2023-11-10 12:23:06,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:23:06,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-10 12:23:06,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:23:06,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-10 12:23:06,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-10 12:23:06,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 146 [2023-11-10 12:23:06,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 272 transitions, 3342 flow. Second operand has 11 states, 11 states have (on average 98.27272727272727) internal successors, (1081), 11 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:06,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:23:06,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 146 [2023-11-10 12:23:06,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:23:06,820 INFO L124 PetriNetUnfolderBase]: 783/2269 cut-off events. [2023-11-10 12:23:06,821 INFO L125 PetriNetUnfolderBase]: For 23875/23875 co-relation queries the response was YES. [2023-11-10 12:23:06,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11970 conditions, 2269 events. 783/2269 cut-off events. For 23875/23875 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 17374 event pairs, 153 based on Foata normal form. 7/2191 useless extension candidates. Maximal degree in co-relation 9466. Up to 482 conditions per place. [2023-11-10 12:23:06,835 INFO L140 encePairwiseOnDemand]: 134/146 looper letters, 166 selfloop transitions, 116 changer transitions 17/377 dead transitions. [2023-11-10 12:23:06,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 377 transitions, 4596 flow [2023-11-10 12:23:06,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-10 12:23:06,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-10 12:23:06,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1490 transitions. [2023-11-10 12:23:06,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7289628180039139 [2023-11-10 12:23:06,838 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1490 transitions. [2023-11-10 12:23:06,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1490 transitions. [2023-11-10 12:23:06,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:23:06,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1490 transitions. [2023-11-10 12:23:06,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 106.42857142857143) internal successors, (1490), 14 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:06,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 146.0) internal successors, (2190), 15 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:06,842 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 146.0) internal successors, (2190), 15 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:06,842 INFO L175 Difference]: Start difference. First operand has 206 places, 272 transitions, 3342 flow. Second operand 14 states and 1490 transitions. [2023-11-10 12:23:06,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 377 transitions, 4596 flow [2023-11-10 12:23:06,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 377 transitions, 4466 flow, removed 8 selfloop flow, removed 7 redundant places. [2023-11-10 12:23:06,875 INFO L231 Difference]: Finished difference. Result has 213 places, 274 transitions, 3480 flow [2023-11-10 12:23:06,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=3236, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3480, PETRI_PLACES=213, PETRI_TRANSITIONS=274} [2023-11-10 12:23:06,875 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, 73 predicate places. [2023-11-10 12:23:06,875 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 274 transitions, 3480 flow [2023-11-10 12:23:06,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 98.27272727272727) internal successors, (1081), 11 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:06,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:23:06,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:23:06,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-10 12:23:06,876 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 12:23:06,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:23:06,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1568583147, now seen corresponding path program 17 times [2023-11-10 12:23:06,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:23:06,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908314835] [2023-11-10 12:23:06,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:23:06,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:23:06,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:23:07,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:23:07,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:23:07,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908314835] [2023-11-10 12:23:07,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908314835] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:23:07,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:23:07,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-10 12:23:07,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038027439] [2023-11-10 12:23:07,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:23:07,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-10 12:23:07,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:23:07,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-10 12:23:07,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-10 12:23:07,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 146 [2023-11-10 12:23:07,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 274 transitions, 3480 flow. Second operand has 11 states, 11 states have (on average 98.27272727272727) internal successors, (1081), 11 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:07,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:23:07,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 146 [2023-11-10 12:23:07,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:23:07,632 INFO L124 PetriNetUnfolderBase]: 799/2423 cut-off events. [2023-11-10 12:23:07,632 INFO L125 PetriNetUnfolderBase]: For 29409/29409 co-relation queries the response was YES. [2023-11-10 12:23:07,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12624 conditions, 2423 events. 799/2423 cut-off events. For 29409/29409 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 19152 event pairs, 197 based on Foata normal form. 9/2356 useless extension candidates. Maximal degree in co-relation 7534. Up to 467 conditions per place. [2023-11-10 12:23:07,650 INFO L140 encePairwiseOnDemand]: 134/146 looper letters, 143 selfloop transitions, 108 changer transitions 53/382 dead transitions. [2023-11-10 12:23:07,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 382 transitions, 4893 flow [2023-11-10 12:23:07,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-10 12:23:07,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-10 12:23:07,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1488 transitions. [2023-11-10 12:23:07,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7279843444227005 [2023-11-10 12:23:07,653 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1488 transitions. [2023-11-10 12:23:07,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1488 transitions. [2023-11-10 12:23:07,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:23:07,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1488 transitions. [2023-11-10 12:23:07,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 106.28571428571429) internal successors, (1488), 14 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:07,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 146.0) internal successors, (2190), 15 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:07,657 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 146.0) internal successors, (2190), 15 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:07,657 INFO L175 Difference]: Start difference. First operand has 213 places, 274 transitions, 3480 flow. Second operand 14 states and 1488 transitions. [2023-11-10 12:23:07,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 382 transitions, 4893 flow [2023-11-10 12:23:07,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 382 transitions, 4628 flow, removed 2 selfloop flow, removed 11 redundant places. [2023-11-10 12:23:07,692 INFO L231 Difference]: Finished difference. Result has 216 places, 266 transitions, 3308 flow [2023-11-10 12:23:07,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=3242, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3308, PETRI_PLACES=216, PETRI_TRANSITIONS=266} [2023-11-10 12:23:07,693 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, 76 predicate places. [2023-11-10 12:23:07,693 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 266 transitions, 3308 flow [2023-11-10 12:23:07,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 98.27272727272727) internal successors, (1081), 11 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:07,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:23:07,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:23:07,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-10 12:23:07,694 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 12:23:07,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:23:07,694 INFO L85 PathProgramCache]: Analyzing trace with hash 979058613, now seen corresponding path program 18 times [2023-11-10 12:23:07,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:23:07,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016840543] [2023-11-10 12:23:07,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:23:07,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:23:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:23:07,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:23:07,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:23:07,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016840543] [2023-11-10 12:23:07,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016840543] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:23:07,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:23:07,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-10 12:23:07,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483141753] [2023-11-10 12:23:07,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:23:07,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-10 12:23:07,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:23:07,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-10 12:23:07,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-10 12:23:07,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 146 [2023-11-10 12:23:07,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 266 transitions, 3308 flow. Second operand has 11 states, 11 states have (on average 98.27272727272727) internal successors, (1081), 11 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:07,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:23:07,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 146 [2023-11-10 12:23:07,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:23:08,410 INFO L124 PetriNetUnfolderBase]: 748/2280 cut-off events. [2023-11-10 12:23:08,410 INFO L125 PetriNetUnfolderBase]: For 27376/27376 co-relation queries the response was YES. [2023-11-10 12:23:08,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12069 conditions, 2280 events. 748/2280 cut-off events. For 27376/27376 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 17867 event pairs, 191 based on Foata normal form. 21/2224 useless extension candidates. Maximal degree in co-relation 6429. Up to 468 conditions per place. [2023-11-10 12:23:08,425 INFO L140 encePairwiseOnDemand]: 134/146 looper letters, 155 selfloop transitions, 108 changer transitions 37/378 dead transitions. [2023-11-10 12:23:08,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 378 transitions, 4725 flow [2023-11-10 12:23:08,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-10 12:23:08,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-10 12:23:08,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1491 transitions. [2023-11-10 12:23:08,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7294520547945206 [2023-11-10 12:23:08,428 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1491 transitions. [2023-11-10 12:23:08,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1491 transitions. [2023-11-10 12:23:08,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:23:08,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1491 transitions. [2023-11-10 12:23:08,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 106.5) internal successors, (1491), 14 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:08,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 146.0) internal successors, (2190), 15 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:08,432 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 146.0) internal successors, (2190), 15 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:08,432 INFO L175 Difference]: Start difference. First operand has 216 places, 266 transitions, 3308 flow. Second operand 14 states and 1491 transitions. [2023-11-10 12:23:08,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 378 transitions, 4725 flow [2023-11-10 12:23:08,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 378 transitions, 4491 flow, removed 9 selfloop flow, removed 10 redundant places. [2023-11-10 12:23:08,464 INFO L231 Difference]: Finished difference. Result has 218 places, 264 transitions, 3276 flow [2023-11-10 12:23:08,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=3097, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3276, PETRI_PLACES=218, PETRI_TRANSITIONS=264} [2023-11-10 12:23:08,465 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, 78 predicate places. [2023-11-10 12:23:08,465 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 264 transitions, 3276 flow [2023-11-10 12:23:08,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 98.27272727272727) internal successors, (1081), 11 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:08,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:23:08,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:23:08,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-10 12:23:08,466 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 12:23:08,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:23:08,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1549479979, now seen corresponding path program 19 times [2023-11-10 12:23:08,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:23:08,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637259321] [2023-11-10 12:23:08,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:23:08,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:23:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:23:08,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:23:08,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:23:08,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637259321] [2023-11-10 12:23:08,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637259321] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:23:08,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:23:08,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-10 12:23:08,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048533124] [2023-11-10 12:23:08,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:23:08,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-10 12:23:08,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:23:08,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-10 12:23:08,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-10 12:23:08,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 146 [2023-11-10 12:23:08,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 264 transitions, 3276 flow. Second operand has 9 states, 9 states have (on average 99.22222222222223) internal successors, (893), 9 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:08,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:23:08,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 146 [2023-11-10 12:23:08,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:23:08,865 INFO L124 PetriNetUnfolderBase]: 168/746 cut-off events. [2023-11-10 12:23:08,865 INFO L125 PetriNetUnfolderBase]: For 7138/7138 co-relation queries the response was YES. [2023-11-10 12:23:08,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3995 conditions, 746 events. 168/746 cut-off events. For 7138/7138 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4161 event pairs, 44 based on Foata normal form. 72/811 useless extension candidates. Maximal degree in co-relation 3428. Up to 233 conditions per place. [2023-11-10 12:23:08,870 INFO L140 encePairwiseOnDemand]: 134/146 looper letters, 97 selfloop transitions, 27 changer transitions 46/248 dead transitions. [2023-11-10 12:23:08,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 248 transitions, 2757 flow [2023-11-10 12:23:08,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-10 12:23:08,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-10 12:23:08,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1054 transitions. [2023-11-10 12:23:08,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7219178082191781 [2023-11-10 12:23:08,871 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1054 transitions. [2023-11-10 12:23:08,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1054 transitions. [2023-11-10 12:23:08,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:23:08,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1054 transitions. [2023-11-10 12:23:08,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 105.4) internal successors, (1054), 10 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:08,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 146.0) internal successors, (1606), 11 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:08,874 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 146.0) internal successors, (1606), 11 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:08,874 INFO L175 Difference]: Start difference. First operand has 218 places, 264 transitions, 3276 flow. Second operand 10 states and 1054 transitions. [2023-11-10 12:23:08,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 248 transitions, 2757 flow [2023-11-10 12:23:08,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 248 transitions, 2538 flow, removed 28 selfloop flow, removed 13 redundant places. [2023-11-10 12:23:08,889 INFO L231 Difference]: Finished difference. Result has 214 places, 175 transitions, 1305 flow [2023-11-10 12:23:08,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=1934, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1305, PETRI_PLACES=214, PETRI_TRANSITIONS=175} [2023-11-10 12:23:08,889 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, 74 predicate places. [2023-11-10 12:23:08,889 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 175 transitions, 1305 flow [2023-11-10 12:23:08,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 99.22222222222223) internal successors, (893), 9 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:08,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:23:08,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:23:08,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-10 12:23:08,890 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 12:23:08,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:23:08,890 INFO L85 PathProgramCache]: Analyzing trace with hash 2090633443, now seen corresponding path program 20 times [2023-11-10 12:23:08,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:23:08,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096201308] [2023-11-10 12:23:08,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:23:08,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:23:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:23:09,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:23:09,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:23:09,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096201308] [2023-11-10 12:23:09,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096201308] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:23:09,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:23:09,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-10 12:23:09,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447257830] [2023-11-10 12:23:09,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:23:09,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-10 12:23:09,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:23:09,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-10 12:23:09,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-10 12:23:09,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 146 [2023-11-10 12:23:09,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 175 transitions, 1305 flow. Second operand has 9 states, 9 states have (on average 107.22222222222223) internal successors, (965), 9 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:09,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:23:09,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 146 [2023-11-10 12:23:09,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:23:09,132 INFO L124 PetriNetUnfolderBase]: 33/306 cut-off events. [2023-11-10 12:23:09,132 INFO L125 PetriNetUnfolderBase]: For 2286/2298 co-relation queries the response was YES. [2023-11-10 12:23:09,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1208 conditions, 306 events. 33/306 cut-off events. For 2286/2298 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 968 event pairs, 4 based on Foata normal form. 12/316 useless extension candidates. Maximal degree in co-relation 955. Up to 39 conditions per place. [2023-11-10 12:23:09,133 INFO L140 encePairwiseOnDemand]: 134/146 looper letters, 43 selfloop transitions, 26 changer transitions 19/177 dead transitions. [2023-11-10 12:23:09,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 177 transitions, 1437 flow [2023-11-10 12:23:09,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-10 12:23:09,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-10 12:23:09,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1102 transitions. [2023-11-10 12:23:09,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7547945205479452 [2023-11-10 12:23:09,135 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1102 transitions. [2023-11-10 12:23:09,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1102 transitions. [2023-11-10 12:23:09,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:23:09,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1102 transitions. [2023-11-10 12:23:09,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 110.2) internal successors, (1102), 10 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:09,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 146.0) internal successors, (1606), 11 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:09,138 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 146.0) internal successors, (1606), 11 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:09,138 INFO L175 Difference]: Start difference. First operand has 214 places, 175 transitions, 1305 flow. Second operand 10 states and 1102 transitions. [2023-11-10 12:23:09,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 177 transitions, 1437 flow [2023-11-10 12:23:09,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 177 transitions, 1173 flow, removed 30 selfloop flow, removed 26 redundant places. [2023-11-10 12:23:09,143 INFO L231 Difference]: Finished difference. Result has 188 places, 146 transitions, 749 flow [2023-11-10 12:23:09,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=749, PETRI_PLACES=188, PETRI_TRANSITIONS=146} [2023-11-10 12:23:09,144 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, 48 predicate places. [2023-11-10 12:23:09,144 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 146 transitions, 749 flow [2023-11-10 12:23:09,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 107.22222222222223) internal successors, (965), 9 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:09,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:23:09,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:23:09,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-10 12:23:09,145 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 12:23:09,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:23:09,145 INFO L85 PathProgramCache]: Analyzing trace with hash -505267441, now seen corresponding path program 21 times [2023-11-10 12:23:09,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:23:09,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786287773] [2023-11-10 12:23:09,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:23:09,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:23:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:23:09,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:23:09,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:23:09,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786287773] [2023-11-10 12:23:09,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786287773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:23:09,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:23:09,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-10 12:23:09,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310817052] [2023-11-10 12:23:09,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:23:09,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-10 12:23:09,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:23:09,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-10 12:23:09,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-10 12:23:09,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 146 [2023-11-10 12:23:09,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 146 transitions, 749 flow. Second operand has 10 states, 10 states have (on average 106.8) internal successors, (1068), 10 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:09,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:23:09,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 146 [2023-11-10 12:23:09,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:23:09,397 INFO L124 PetriNetUnfolderBase]: 17/198 cut-off events. [2023-11-10 12:23:09,397 INFO L125 PetriNetUnfolderBase]: For 876/882 co-relation queries the response was YES. [2023-11-10 12:23:09,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 630 conditions, 198 events. 17/198 cut-off events. For 876/882 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 342 event pairs, 2 based on Foata normal form. 10/207 useless extension candidates. Maximal degree in co-relation 484. Up to 20 conditions per place. [2023-11-10 12:23:09,398 INFO L140 encePairwiseOnDemand]: 134/146 looper letters, 37 selfloop transitions, 18 changer transitions 9/153 dead transitions. [2023-11-10 12:23:09,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 153 transitions, 859 flow [2023-11-10 12:23:09,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-10 12:23:09,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-10 12:23:09,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1092 transitions. [2023-11-10 12:23:09,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7479452054794521 [2023-11-10 12:23:09,400 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1092 transitions. [2023-11-10 12:23:09,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1092 transitions. [2023-11-10 12:23:09,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:23:09,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1092 transitions. [2023-11-10 12:23:09,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 109.2) internal successors, (1092), 10 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:09,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 146.0) internal successors, (1606), 11 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:09,403 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 146.0) internal successors, (1606), 11 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:09,403 INFO L175 Difference]: Start difference. First operand has 188 places, 146 transitions, 749 flow. Second operand 10 states and 1092 transitions. [2023-11-10 12:23:09,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 153 transitions, 859 flow [2023-11-10 12:23:09,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 153 transitions, 649 flow, removed 6 selfloop flow, removed 28 redundant places. [2023-11-10 12:23:09,406 INFO L231 Difference]: Finished difference. Result has 170 places, 134 transitions, 440 flow [2023-11-10 12:23:09,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=440, PETRI_PLACES=170, PETRI_TRANSITIONS=134} [2023-11-10 12:23:09,407 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, 30 predicate places. [2023-11-10 12:23:09,407 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 134 transitions, 440 flow [2023-11-10 12:23:09,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 106.8) internal successors, (1068), 10 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:09,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:23:09,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:23:09,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-10 12:23:09,408 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 12:23:09,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:23:09,408 INFO L85 PathProgramCache]: Analyzing trace with hash -134196359, now seen corresponding path program 22 times [2023-11-10 12:23:09,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:23:09,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517414354] [2023-11-10 12:23:09,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:23:09,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:23:09,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:23:09,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:23:09,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:23:09,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517414354] [2023-11-10 12:23:09,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517414354] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:23:09,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:23:09,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-10 12:23:09,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492159698] [2023-11-10 12:23:09,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:23:09,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-10 12:23:09,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:23:09,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-10 12:23:09,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-10 12:23:09,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 146 [2023-11-10 12:23:09,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 134 transitions, 440 flow. Second operand has 11 states, 11 states have (on average 106.45454545454545) internal successors, (1171), 11 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:09,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:23:09,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 146 [2023-11-10 12:23:09,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:23:09,643 INFO L124 PetriNetUnfolderBase]: 9/127 cut-off events. [2023-11-10 12:23:09,644 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2023-11-10 12:23:09,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 127 events. 9/127 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 121 event pairs, 0 based on Foata normal form. 2/128 useless extension candidates. Maximal degree in co-relation 289. Up to 8 conditions per place. [2023-11-10 12:23:09,644 INFO L140 encePairwiseOnDemand]: 136/146 looper letters, 0 selfloop transitions, 0 changer transitions 114/114 dead transitions. [2023-11-10 12:23:09,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 114 transitions, 463 flow [2023-11-10 12:23:09,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-10 12:23:09,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-10 12:23:09,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1172 transitions. [2023-11-10 12:23:09,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7297633872976339 [2023-11-10 12:23:09,646 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1172 transitions. [2023-11-10 12:23:09,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1172 transitions. [2023-11-10 12:23:09,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:23:09,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1172 transitions. [2023-11-10 12:23:09,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 106.54545454545455) internal successors, (1172), 11 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:09,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 146.0) internal successors, (1752), 12 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:09,649 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 146.0) internal successors, (1752), 12 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:09,649 INFO L175 Difference]: Start difference. First operand has 170 places, 134 transitions, 440 flow. Second operand 11 states and 1172 transitions. [2023-11-10 12:23:09,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 114 transitions, 463 flow [2023-11-10 12:23:09,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 114 transitions, 379 flow, removed 2 selfloop flow, removed 24 redundant places. [2023-11-10 12:23:09,651 INFO L231 Difference]: Finished difference. Result has 128 places, 0 transitions, 0 flow [2023-11-10 12:23:09,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=128, PETRI_TRANSITIONS=0} [2023-11-10 12:23:09,651 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, -12 predicate places. [2023-11-10 12:23:09,652 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 0 transitions, 0 flow [2023-11-10 12:23:09,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 106.45454545454545) internal successors, (1171), 11 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:09,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-11-10 12:23:09,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-11-10 12:23:09,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-10 12:23:09,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-11-10 12:23:09,655 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-11-10 12:23:09,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-10 12:23:09,655 INFO L445 BasicCegarLoop]: Path program histogram: [22] [2023-11-10 12:23:09,658 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-10 12:23:09,658 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-10 12:23:09,661 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 12:23:09 BasicIcfg [2023-11-10 12:23:09,662 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-10 12:23:09,662 INFO L158 Benchmark]: Toolchain (without parser) took 17709.60ms. Allocated memory was 191.9MB in the beginning and 887.1MB in the end (delta: 695.2MB). Free memory was 147.7MB in the beginning and 540.9MB in the end (delta: -393.2MB). Peak memory consumption was 303.0MB. Max. memory is 8.0GB. [2023-11-10 12:23:09,662 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 191.9MB. Free memory is still 148.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-10 12:23:09,662 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.23ms. Allocated memory is still 191.9MB. Free memory was 147.4MB in the beginning and 135.7MB in the end (delta: 11.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-11-10 12:23:09,662 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.71ms. Allocated memory is still 191.9MB. Free memory was 135.7MB in the beginning and 133.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-10 12:23:09,662 INFO L158 Benchmark]: Boogie Preprocessor took 24.91ms. Allocated memory is still 191.9MB. Free memory was 133.5MB in the beginning and 132.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-10 12:23:09,663 INFO L158 Benchmark]: RCFGBuilder took 459.91ms. Allocated memory was 191.9MB in the beginning and 230.7MB in the end (delta: 38.8MB). Free memory was 132.0MB in the beginning and 194.5MB in the end (delta: -62.6MB). Peak memory consumption was 19.2MB. Max. memory is 8.0GB. [2023-11-10 12:23:09,663 INFO L158 Benchmark]: TraceAbstraction took 16970.15ms. Allocated memory was 230.7MB in the beginning and 887.1MB in the end (delta: 656.4MB). Free memory was 193.5MB in the beginning and 540.9MB in the end (delta: -347.4MB). Peak memory consumption was 309.0MB. Max. memory is 8.0GB. [2023-11-10 12:23:09,664 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 191.9MB. Free memory is still 148.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 214.23ms. Allocated memory is still 191.9MB. Free memory was 147.4MB in the beginning and 135.7MB in the end (delta: 11.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 34.71ms. Allocated memory is still 191.9MB. Free memory was 135.7MB in the beginning and 133.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.91ms. Allocated memory is still 191.9MB. Free memory was 133.5MB in the beginning and 132.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 459.91ms. Allocated memory was 191.9MB in the beginning and 230.7MB in the end (delta: 38.8MB). Free memory was 132.0MB in the beginning and 194.5MB in the end (delta: -62.6MB). Peak memory consumption was 19.2MB. Max. memory is 8.0GB. * TraceAbstraction took 16970.15ms. Allocated memory was 230.7MB in the beginning and 887.1MB in the end (delta: 656.4MB). Free memory was 193.5MB in the beginning and 540.9MB in the end (delta: -347.4MB). Peak memory consumption was 309.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 146]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 178 locations, 5 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: 16.9s, OverallIterations: 22, TraceHistogramMax: 1, PathProgramHistogramMax: 22, EmptinessCheckTime: 0.0s, AutomataDifference: 11.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1246 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1246 mSDsluCounter, 2092 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1503 mSDsCounter, 448 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6835 IncrementalHoareTripleChecker+Invalid, 7283 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 448 mSolverCounterUnsat, 589 mSDtfsCounter, 6835 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 303 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3480occurred in iteration=16, InterpolantAutomatonStates: 222, 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, 0.5s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 2750 NumberOfCodeBlocks, 2750 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 2728 ConstructedInterpolants, 0 QuantifiedInterpolants, 9616 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-10 12:23:09,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...