/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-node-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:53:05,477 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:53:05,528 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 15:53:05,553 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:53:05,554 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:53:05,555 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:53:05,555 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:53:05,555 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:53:05,556 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:53:05,556 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:53:05,556 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:53:05,557 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:53:05,557 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:53:05,557 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:53:05,558 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:53:05,558 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:53:05,558 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:53:05,559 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:53:05,559 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:53:05,559 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:53:05,560 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:53:05,565 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:53:05,565 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:53:05,565 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:53:05,573 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:53:05,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:53:05,573 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:53:05,573 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:53:05,574 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:53:05,574 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:53:05,574 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:53:05,574 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:53:05,574 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:53:05,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:53:05,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:53:05,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:53:05,800 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:53:05,802 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:53:05,804 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-subst.wvr.c [2023-11-17 15:53:07,081 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:53:07,301 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:53:07,302 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-subst.wvr.c [2023-11-17 15:53:07,312 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91a238be0/110bff768df04c39af5523dacc5c1d7c/FLAG9321e0208 [2023-11-17 15:53:07,336 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91a238be0/110bff768df04c39af5523dacc5c1d7c [2023-11-17 15:53:07,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:53:07,341 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:53:07,344 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:53:07,344 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:53:07,348 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:53:07,350 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:53:07" (1/1) ... [2023-11-17 15:53:07,351 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@109c410a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:53:07, skipping insertion in model container [2023-11-17 15:53:07,351 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:53:07" (1/1) ... [2023-11-17 15:53:07,385 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:53:07,551 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-subst.wvr.c[4035,4048] [2023-11-17 15:53:07,569 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:53:07,579 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:53:07,609 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-subst.wvr.c[4035,4048] [2023-11-17 15:53:07,615 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:53:07,631 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:53:07,632 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:53:07 WrapperNode [2023-11-17 15:53:07,632 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:53:07,633 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:53:07,633 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:53:07,633 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:53:07,639 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:53:07" (1/1) ... [2023-11-17 15:53:07,650 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:53:07" (1/1) ... [2023-11-17 15:53:07,702 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 439 [2023-11-17 15:53:07,702 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:53:07,703 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:53:07,703 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:53:07,703 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:53:07,723 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:53:07" (1/1) ... [2023-11-17 15:53:07,723 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:53:07" (1/1) ... [2023-11-17 15:53:07,728 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:53:07" (1/1) ... [2023-11-17 15:53:07,728 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:53:07" (1/1) ... [2023-11-17 15:53:07,757 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:53:07" (1/1) ... [2023-11-17 15:53:07,762 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:53:07" (1/1) ... [2023-11-17 15:53:07,764 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:53:07" (1/1) ... [2023-11-17 15:53:07,783 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:53:07" (1/1) ... [2023-11-17 15:53:07,787 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:53:07,788 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:53:07,788 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:53:07,788 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:53:07,793 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:53:07" (1/1) ... [2023-11-17 15:53:07,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:53:07,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:53:07,822 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 15:53:07,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 15:53:07,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:53:07,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:53:07,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:53:07,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 15:53:07,848 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 15:53:07,848 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 15:53:07,848 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 15:53:07,848 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 15:53:07,848 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 15:53:07,849 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 15:53:07,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:53:07,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 15:53:07,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:53:07,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:53:07,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:53:07,851 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 15:53:08,013 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:53:08,018 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:53:08,656 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:53:08,684 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:53:08,685 INFO L307 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-17 15:53:08,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:53:08 BoogieIcfgContainer [2023-11-17 15:53:08,687 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:53:08,691 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:53:08,691 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:53:08,693 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:53:08,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:53:07" (1/3) ... [2023-11-17 15:53:08,694 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32376a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:53:08, skipping insertion in model container [2023-11-17 15:53:08,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:53:07" (2/3) ... [2023-11-17 15:53:08,695 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32376a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:53:08, skipping insertion in model container [2023-11-17 15:53:08,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:53:08" (3/3) ... [2023-11-17 15:53:08,711 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2023-11-17 15:53:08,725 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:53:08,725 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 15:53:08,726 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:53:08,810 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-17 15:53:08,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 536 places, 567 transitions, 1155 flow [2023-11-17 15:53:09,005 INFO L124 PetriNetUnfolderBase]: 41/564 cut-off events. [2023-11-17 15:53:09,005 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 15:53:09,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 577 conditions, 564 events. 41/564 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 703 event pairs, 0 based on Foata normal form. 0/522 useless extension candidates. Maximal degree in co-relation 481. Up to 2 conditions per place. [2023-11-17 15:53:09,013 INFO L82 GeneralOperation]: Start removeDead. Operand has 536 places, 567 transitions, 1155 flow [2023-11-17 15:53:09,021 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 522 places, 553 transitions, 1124 flow [2023-11-17 15:53:09,024 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:53:09,037 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 522 places, 553 transitions, 1124 flow [2023-11-17 15:53:09,043 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 522 places, 553 transitions, 1124 flow [2023-11-17 15:53:09,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 522 places, 553 transitions, 1124 flow [2023-11-17 15:53:09,192 INFO L124 PetriNetUnfolderBase]: 41/553 cut-off events. [2023-11-17 15:53:09,193 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 15:53:09,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 566 conditions, 553 events. 41/553 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 703 event pairs, 0 based on Foata normal form. 0/512 useless extension candidates. Maximal degree in co-relation 481. Up to 2 conditions per place. [2023-11-17 15:53:09,210 INFO L119 LiptonReduction]: Number of co-enabled transitions 22110 [2023-11-17 15:53:26,573 INFO L134 LiptonReduction]: Checked pairs total: 25175 [2023-11-17 15:53:26,574 INFO L136 LiptonReduction]: Total number of compositions: 645 [2023-11-17 15:53:26,587 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:53:26,593 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;@5f1a0bee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:53:26,594 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 15:53:26,601 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:53:26,601 INFO L124 PetriNetUnfolderBase]: 10/41 cut-off events. [2023-11-17 15:53:26,601 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 15:53:26,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:53:26,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:53:26,603 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:53:26,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:53:26,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1883497507, now seen corresponding path program 1 times [2023-11-17 15:53:26,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:53:26,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536362012] [2023-11-17 15:53:26,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:53:26,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:53:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:53:26,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:53:26,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:53:26,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536362012] [2023-11-17 15:53:26,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536362012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:53:26,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:53:26,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:53:26,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984849487] [2023-11-17 15:53:26,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:53:26,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-17 15:53:26,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:53:27,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-17 15:53:27,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-17 15:53:27,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 531 out of 1212 [2023-11-17 15:53:27,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 102 flow. Second operand has 2 states, 2 states have (on average 543.5) internal successors, (1087), 2 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:27,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:53:27,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 531 of 1212 [2023-11-17 15:53:27,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:53:27,221 INFO L124 PetriNetUnfolderBase]: 699/1048 cut-off events. [2023-11-17 15:53:27,221 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2023-11-17 15:53:27,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2232 conditions, 1048 events. 699/1048 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3721 event pairs, 557 based on Foata normal form. 0/906 useless extension candidates. Maximal degree in co-relation 2016. Up to 1049 conditions per place. [2023-11-17 15:53:27,228 INFO L140 encePairwiseOnDemand]: 1211/1212 looper letters, 41 selfloop transitions, 0 changer transitions 0/41 dead transitions. [2023-11-17 15:53:27,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 182 flow [2023-11-17 15:53:27,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 15:53:27,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-17 15:53:27,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1104 transitions. [2023-11-17 15:53:27,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45544554455445546 [2023-11-17 15:53:27,248 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1104 transitions. [2023-11-17 15:53:27,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1104 transitions. [2023-11-17 15:53:27,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:53:27,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1104 transitions. [2023-11-17 15:53:27,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 552.0) internal successors, (1104), 2 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:27,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1212.0) internal successors, (3636), 3 states have internal predecessors, (3636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:27,272 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1212.0) internal successors, (3636), 3 states have internal predecessors, (3636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:27,273 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 102 flow. Second operand 2 states and 1104 transitions. [2023-11-17 15:53:27,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 182 flow [2023-11-17 15:53:27,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 170 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-17 15:53:27,281 INFO L231 Difference]: Finished difference. Result has 37 places, 41 transitions, 88 flow [2023-11-17 15:53:27,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1212, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=88, PETRI_PLACES=37, PETRI_TRANSITIONS=41} [2023-11-17 15:53:27,288 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places. [2023-11-17 15:53:27,288 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 41 transitions, 88 flow [2023-11-17 15:53:27,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 543.5) internal successors, (1087), 2 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:27,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:53:27,289 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] [2023-11-17 15:53:27,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:53:27,290 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:53:27,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:53:27,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1236281337, now seen corresponding path program 1 times [2023-11-17 15:53:27,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:53:27,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629906180] [2023-11-17 15:53:27,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:53:27,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:53:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:53:27,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:53:27,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:53:27,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629906180] [2023-11-17 15:53:27,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629906180] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:53:27,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:53:27,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:53:27,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495003718] [2023-11-17 15:53:27,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:53:27,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:53:27,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:53:27,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:53:27,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:53:27,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 524 out of 1212 [2023-11-17 15:53:27,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 41 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 533.3333333333334) internal successors, (1600), 3 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:27,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:53:27,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 524 of 1212 [2023-11-17 15:53:27,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:53:27,702 INFO L124 PetriNetUnfolderBase]: 789/1184 cut-off events. [2023-11-17 15:53:27,702 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-17 15:53:27,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2435 conditions, 1184 events. 789/1184 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4442 event pairs, 473 based on Foata normal form. 0/1036 useless extension candidates. Maximal degree in co-relation 2432. Up to 867 conditions per place. [2023-11-17 15:53:27,709 INFO L140 encePairwiseOnDemand]: 1208/1212 looper letters, 52 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2023-11-17 15:53:27,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 55 transitions, 228 flow [2023-11-17 15:53:27,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:53:27,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:53:27,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1628 transitions. [2023-11-17 15:53:27,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44774477447744776 [2023-11-17 15:53:27,714 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1628 transitions. [2023-11-17 15:53:27,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1628 transitions. [2023-11-17 15:53:27,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:53:27,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1628 transitions. [2023-11-17 15:53:27,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 542.6666666666666) internal successors, (1628), 3 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:27,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1212.0) internal successors, (4848), 4 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:27,727 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1212.0) internal successors, (4848), 4 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:27,728 INFO L175 Difference]: Start difference. First operand has 37 places, 41 transitions, 88 flow. Second operand 3 states and 1628 transitions. [2023-11-17 15:53:27,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 55 transitions, 228 flow [2023-11-17 15:53:27,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 55 transitions, 228 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 15:53:27,730 INFO L231 Difference]: Finished difference. Result has 41 places, 42 transitions, 106 flow [2023-11-17 15:53:27,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1212, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=41, PETRI_TRANSITIONS=42} [2023-11-17 15:53:27,731 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2023-11-17 15:53:27,731 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 42 transitions, 106 flow [2023-11-17 15:53:27,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 533.3333333333334) internal successors, (1600), 3 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:27,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:53:27,732 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] [2023-11-17 15:53:27,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:53:27,733 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:53:27,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:53:27,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1990745682, now seen corresponding path program 1 times [2023-11-17 15:53:27,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:53:27,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101528580] [2023-11-17 15:53:27,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:53:27,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:53:27,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:53:27,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:53:27,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:53:27,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101528580] [2023-11-17 15:53:27,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101528580] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:53:27,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:53:27,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:53:27,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579591307] [2023-11-17 15:53:27,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:53:27,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:53:27,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:53:27,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:53:27,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:53:27,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 492 out of 1212 [2023-11-17 15:53:27,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 42 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 501.6666666666667) internal successors, (1505), 3 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:27,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:53:27,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 492 of 1212 [2023-11-17 15:53:27,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:53:28,086 INFO L124 PetriNetUnfolderBase]: 789/1185 cut-off events. [2023-11-17 15:53:28,087 INFO L125 PetriNetUnfolderBase]: For 231/231 co-relation queries the response was YES. [2023-11-17 15:53:28,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2807 conditions, 1185 events. 789/1185 cut-off events. For 231/231 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4315 event pairs, 641 based on Foata normal form. 0/1129 useless extension candidates. Maximal degree in co-relation 2802. Up to 1185 conditions per place. [2023-11-17 15:53:28,093 INFO L140 encePairwiseOnDemand]: 1209/1212 looper letters, 41 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-11-17 15:53:28,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 43 transitions, 194 flow [2023-11-17 15:53:28,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:53:28,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:53:28,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1519 transitions. [2023-11-17 15:53:28,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41776677667766776 [2023-11-17 15:53:28,098 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1519 transitions. [2023-11-17 15:53:28,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1519 transitions. [2023-11-17 15:53:28,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:53:28,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1519 transitions. [2023-11-17 15:53:28,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 506.3333333333333) internal successors, (1519), 3 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:28,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1212.0) internal successors, (4848), 4 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:28,111 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1212.0) internal successors, (4848), 4 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:28,111 INFO L175 Difference]: Start difference. First operand has 41 places, 42 transitions, 106 flow. Second operand 3 states and 1519 transitions. [2023-11-17 15:53:28,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 43 transitions, 194 flow [2023-11-17 15:53:28,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 43 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 15:53:28,115 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 112 flow [2023-11-17 15:53:28,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1212, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2023-11-17 15:53:28,116 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-11-17 15:53:28,116 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 112 flow [2023-11-17 15:53:28,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 501.6666666666667) internal successors, (1505), 3 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:28,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:53:28,118 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] [2023-11-17 15:53:28,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 15:53:28,118 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:53:28,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:53:28,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1432284726, now seen corresponding path program 1 times [2023-11-17 15:53:28,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:53:28,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189798352] [2023-11-17 15:53:28,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:53:28,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:53:28,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:53:28,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:53:28,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:53:28,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189798352] [2023-11-17 15:53:28,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189798352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:53:28,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:53:28,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:53:28,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399732379] [2023-11-17 15:53:28,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:53:28,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:53:28,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:53:28,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:53:28,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:53:28,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 480 out of 1212 [2023-11-17 15:53:28,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 487.5) internal successors, (1950), 4 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:28,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:53:28,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 480 of 1212 [2023-11-17 15:53:28,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:53:28,554 INFO L124 PetriNetUnfolderBase]: 789/1186 cut-off events. [2023-11-17 15:53:28,555 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2023-11-17 15:53:28,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2677 conditions, 1186 events. 789/1186 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4315 event pairs, 641 based on Foata normal form. 0/1084 useless extension candidates. Maximal degree in co-relation 2671. Up to 1184 conditions per place. [2023-11-17 15:53:28,560 INFO L140 encePairwiseOnDemand]: 1207/1212 looper letters, 40 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2023-11-17 15:53:28,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 44 transitions, 202 flow [2023-11-17 15:53:28,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:53:28,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:53:28,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1964 transitions. [2023-11-17 15:53:28,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4051155115511551 [2023-11-17 15:53:28,566 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1964 transitions. [2023-11-17 15:53:28,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1964 transitions. [2023-11-17 15:53:28,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:53:28,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1964 transitions. [2023-11-17 15:53:28,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 491.0) internal successors, (1964), 4 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:28,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1212.0) internal successors, (6060), 5 states have internal predecessors, (6060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:28,581 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1212.0) internal successors, (6060), 5 states have internal predecessors, (6060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:28,582 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 112 flow. Second operand 4 states and 1964 transitions. [2023-11-17 15:53:28,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 44 transitions, 202 flow [2023-11-17 15:53:28,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 44 transitions, 198 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 15:53:28,586 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 126 flow [2023-11-17 15:53:28,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1212, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=126, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2023-11-17 15:53:28,587 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2023-11-17 15:53:28,587 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 126 flow [2023-11-17 15:53:28,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 487.5) internal successors, (1950), 4 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:28,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:53:28,589 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] [2023-11-17 15:53:28,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 15:53:28,589 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:53:28,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:53:28,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1053063921, now seen corresponding path program 1 times [2023-11-17 15:53:28,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:53:28,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483873998] [2023-11-17 15:53:28,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:53:28,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:53:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:53:28,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 15:53:28,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:53:28,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483873998] [2023-11-17 15:53:28,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483873998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:53:28,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:53:28,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:53:28,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793804526] [2023-11-17 15:53:28,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:53:28,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:53:28,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:53:28,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:53:28,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:53:28,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 480 out of 1212 [2023-11-17 15:53:28,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 487.75) internal successors, (1951), 4 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:28,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:53:28,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 480 of 1212 [2023-11-17 15:53:28,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:53:28,971 INFO L124 PetriNetUnfolderBase]: 789/1187 cut-off events. [2023-11-17 15:53:28,972 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2023-11-17 15:53:28,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2686 conditions, 1187 events. 789/1187 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4315 event pairs, 641 based on Foata normal form. 0/1086 useless extension candidates. Maximal degree in co-relation 2679. Up to 1186 conditions per place. [2023-11-17 15:53:28,979 INFO L140 encePairwiseOnDemand]: 1208/1212 looper letters, 42 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2023-11-17 15:53:28,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 218 flow [2023-11-17 15:53:28,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:53:28,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:53:28,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1963 transitions. [2023-11-17 15:53:28,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4049092409240924 [2023-11-17 15:53:28,985 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1963 transitions. [2023-11-17 15:53:28,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1963 transitions. [2023-11-17 15:53:28,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:53:28,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1963 transitions. [2023-11-17 15:53:28,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 490.75) internal successors, (1963), 4 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:28,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1212.0) internal successors, (6060), 5 states have internal predecessors, (6060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:28,999 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1212.0) internal successors, (6060), 5 states have internal predecessors, (6060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:28,999 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 126 flow. Second operand 4 states and 1963 transitions. [2023-11-17 15:53:28,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 218 flow [2023-11-17 15:53:29,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 45 transitions, 217 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:53:29,002 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 139 flow [2023-11-17 15:53:29,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1212, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2023-11-17 15:53:29,003 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2023-11-17 15:53:29,003 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 139 flow [2023-11-17 15:53:29,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 487.75) internal successors, (1951), 4 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:29,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:53:29,004 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] [2023-11-17 15:53:29,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 15:53:29,004 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:53:29,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:53:29,005 INFO L85 PathProgramCache]: Analyzing trace with hash -643470102, now seen corresponding path program 1 times [2023-11-17 15:53:29,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:53:29,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048710025] [2023-11-17 15:53:29,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:53:29,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:53:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:53:29,143 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 15:53:29,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:53:29,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048710025] [2023-11-17 15:53:29,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048710025] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:53:29,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:53:29,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:53:29,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347069971] [2023-11-17 15:53:29,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:53:29,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:53:29,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:53:29,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:53:29,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:53:29,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 483 out of 1212 [2023-11-17 15:53:29,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 491.0) internal successors, (1964), 4 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:29,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:53:29,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 483 of 1212 [2023-11-17 15:53:29,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:53:29,339 INFO L124 PetriNetUnfolderBase]: 789/1188 cut-off events. [2023-11-17 15:53:29,339 INFO L125 PetriNetUnfolderBase]: For 86/86 co-relation queries the response was YES. [2023-11-17 15:53:29,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2695 conditions, 1188 events. 789/1188 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4315 event pairs, 641 based on Foata normal form. 0/1088 useless extension candidates. Maximal degree in co-relation 2687. Up to 1187 conditions per place. [2023-11-17 15:53:29,347 INFO L140 encePairwiseOnDemand]: 1208/1212 looper letters, 43 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2023-11-17 15:53:29,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 233 flow [2023-11-17 15:53:29,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:53:29,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:53:29,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1975 transitions. [2023-11-17 15:53:29,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4073844884488449 [2023-11-17 15:53:29,353 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1975 transitions. [2023-11-17 15:53:29,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1975 transitions. [2023-11-17 15:53:29,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:53:29,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1975 transitions. [2023-11-17 15:53:29,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 493.75) internal successors, (1975), 4 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:29,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1212.0) internal successors, (6060), 5 states have internal predecessors, (6060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:29,365 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1212.0) internal successors, (6060), 5 states have internal predecessors, (6060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:29,366 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 139 flow. Second operand 4 states and 1975 transitions. [2023-11-17 15:53:29,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 233 flow [2023-11-17 15:53:29,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 227 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-17 15:53:29,368 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 147 flow [2023-11-17 15:53:29,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1212, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=147, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-11-17 15:53:29,369 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2023-11-17 15:53:29,369 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 147 flow [2023-11-17 15:53:29,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 491.0) internal successors, (1964), 4 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:29,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:53:29,371 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] [2023-11-17 15:53:29,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 15:53:29,371 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:53:29,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:53:29,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1440074201, now seen corresponding path program 1 times [2023-11-17 15:53:29,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:53:29,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195275375] [2023-11-17 15:53:29,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:53:29,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:53:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:53:29,494 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 15:53:29,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:53:29,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195275375] [2023-11-17 15:53:29,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195275375] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:53:29,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:53:29,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:53:29,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762925511] [2023-11-17 15:53:29,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:53:29,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:53:29,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:53:29,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:53:29,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:53:29,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 483 out of 1212 [2023-11-17 15:53:29,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 491.25) internal successors, (1965), 4 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:29,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:53:29,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 483 of 1212 [2023-11-17 15:53:29,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:53:29,738 INFO L124 PetriNetUnfolderBase]: 789/1189 cut-off events. [2023-11-17 15:53:29,738 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2023-11-17 15:53:29,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2701 conditions, 1189 events. 789/1189 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4320 event pairs, 641 based on Foata normal form. 0/1090 useless extension candidates. Maximal degree in co-relation 2692. Up to 1188 conditions per place. [2023-11-17 15:53:29,745 INFO L140 encePairwiseOnDemand]: 1208/1212 looper letters, 44 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2023-11-17 15:53:29,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 47 transitions, 243 flow [2023-11-17 15:53:29,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:53:29,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:53:29,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1975 transitions. [2023-11-17 15:53:29,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4073844884488449 [2023-11-17 15:53:29,751 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1975 transitions. [2023-11-17 15:53:29,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1975 transitions. [2023-11-17 15:53:29,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:53:29,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1975 transitions. [2023-11-17 15:53:29,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 493.75) internal successors, (1975), 4 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:29,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1212.0) internal successors, (6060), 5 states have internal predecessors, (6060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:29,763 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1212.0) internal successors, (6060), 5 states have internal predecessors, (6060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:29,763 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 147 flow. Second operand 4 states and 1975 transitions. [2023-11-17 15:53:29,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 47 transitions, 243 flow [2023-11-17 15:53:29,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 47 transitions, 237 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-17 15:53:29,766 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 155 flow [2023-11-17 15:53:29,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1212, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=155, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2023-11-17 15:53:29,766 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2023-11-17 15:53:29,766 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 155 flow [2023-11-17 15:53:29,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 491.25) internal successors, (1965), 4 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:29,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:53:29,767 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] [2023-11-17 15:53:29,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 15:53:29,768 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:53:29,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:53:29,768 INFO L85 PathProgramCache]: Analyzing trace with hash 405858536, now seen corresponding path program 1 times [2023-11-17 15:53:29,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:53:29,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715318529] [2023-11-17 15:53:29,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:53:29,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:53:29,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:53:30,007 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 15:53:30,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:53:30,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715318529] [2023-11-17 15:53:30,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715318529] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:53:30,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051030684] [2023-11-17 15:53:30,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:53:30,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:53:30,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:53:30,013 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:53:30,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 15:53:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:53:30,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-17 15:53:30,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:53:30,235 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-17 15:53:30,235 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:53:30,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051030684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:53:30,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:53:30,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-17 15:53:30,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166510490] [2023-11-17 15:53:30,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:53:30,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:53:30,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:53:30,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:53:30,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 15:53:30,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 483 out of 1212 [2023-11-17 15:53:30,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 155 flow. Second operand has 4 states, 4 states have (on average 491.5) internal successors, (1966), 4 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:30,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:53:30,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 483 of 1212 [2023-11-17 15:53:30,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:53:30,460 INFO L124 PetriNetUnfolderBase]: 789/1190 cut-off events. [2023-11-17 15:53:30,460 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2023-11-17 15:53:30,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2707 conditions, 1190 events. 789/1190 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4320 event pairs, 641 based on Foata normal form. 0/1092 useless extension candidates. Maximal degree in co-relation 2697. Up to 1189 conditions per place. [2023-11-17 15:53:30,467 INFO L140 encePairwiseOnDemand]: 1208/1212 looper letters, 45 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2023-11-17 15:53:30,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 48 transitions, 253 flow [2023-11-17 15:53:30,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:53:30,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:53:30,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1975 transitions. [2023-11-17 15:53:30,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4073844884488449 [2023-11-17 15:53:30,472 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1975 transitions. [2023-11-17 15:53:30,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1975 transitions. [2023-11-17 15:53:30,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:53:30,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1975 transitions. [2023-11-17 15:53:30,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 493.75) internal successors, (1975), 4 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:30,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1212.0) internal successors, (6060), 5 states have internal predecessors, (6060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:30,484 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1212.0) internal successors, (6060), 5 states have internal predecessors, (6060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:30,484 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 155 flow. Second operand 4 states and 1975 transitions. [2023-11-17 15:53:30,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 48 transitions, 253 flow [2023-11-17 15:53:30,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 48 transitions, 247 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-17 15:53:30,486 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 163 flow [2023-11-17 15:53:30,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1212, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=163, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2023-11-17 15:53:30,487 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2023-11-17 15:53:30,487 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 163 flow [2023-11-17 15:53:30,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 491.5) internal successors, (1966), 4 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:30,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:53:30,488 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] [2023-11-17 15:53:30,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-17 15:53:30,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:53:30,695 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:53:30,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:53:30,696 INFO L85 PathProgramCache]: Analyzing trace with hash -345881631, now seen corresponding path program 1 times [2023-11-17 15:53:30,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:53:30,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890301118] [2023-11-17 15:53:30,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:53:30,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:53:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:53:32,591 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 15:53:32,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:53:32,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890301118] [2023-11-17 15:53:32,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890301118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:53:32,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:53:32,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 15:53:32,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215871084] [2023-11-17 15:53:32,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:53:32,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 15:53:32,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:53:32,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 15:53:32,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-11-17 15:53:32,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 427 out of 1212 [2023-11-17 15:53:32,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 163 flow. Second operand has 13 states, 13 states have (on average 429.6923076923077) internal successors, (5586), 13 states have internal predecessors, (5586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:32,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:53:32,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 427 of 1212 [2023-11-17 15:53:32,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:53:34,460 INFO L124 PetriNetUnfolderBase]: 2952/4514 cut-off events. [2023-11-17 15:53:34,460 INFO L125 PetriNetUnfolderBase]: For 514/514 co-relation queries the response was YES. [2023-11-17 15:53:34,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10320 conditions, 4514 events. 2952/4514 cut-off events. For 514/514 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 24295 event pairs, 398 based on Foata normal form. 2/4104 useless extension candidates. Maximal degree in co-relation 10309. Up to 1173 conditions per place. [2023-11-17 15:53:34,483 INFO L140 encePairwiseOnDemand]: 1200/1212 looper letters, 208 selfloop transitions, 18 changer transitions 14/240 dead transitions. [2023-11-17 15:53:34,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 240 transitions, 1158 flow [2023-11-17 15:53:34,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-17 15:53:34,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-17 15:53:34,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 7058 transitions. [2023-11-17 15:53:34,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3639645214521452 [2023-11-17 15:53:34,500 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 7058 transitions. [2023-11-17 15:53:34,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 7058 transitions. [2023-11-17 15:53:34,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:53:34,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 7058 transitions. [2023-11-17 15:53:34,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 441.125) internal successors, (7058), 16 states have internal predecessors, (7058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:34,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 1212.0) internal successors, (20604), 17 states have internal predecessors, (20604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:34,546 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 1212.0) internal successors, (20604), 17 states have internal predecessors, (20604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:34,546 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 163 flow. Second operand 16 states and 7058 transitions. [2023-11-17 15:53:34,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 240 transitions, 1158 flow [2023-11-17 15:53:34,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 240 transitions, 1152 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-17 15:53:34,563 INFO L231 Difference]: Finished difference. Result has 79 places, 63 transitions, 278 flow [2023-11-17 15:53:34,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1212, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=278, PETRI_PLACES=79, PETRI_TRANSITIONS=63} [2023-11-17 15:53:34,565 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 37 predicate places. [2023-11-17 15:53:34,565 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 63 transitions, 278 flow [2023-11-17 15:53:34,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 429.6923076923077) internal successors, (5586), 13 states have internal predecessors, (5586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:34,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:53:34,567 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] [2023-11-17 15:53:34,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 15:53:34,567 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:53:34,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:53:34,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1894546445, now seen corresponding path program 2 times [2023-11-17 15:53:34,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:53:34,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035578549] [2023-11-17 15:53:34,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:53:34,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:53:34,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:53:36,637 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 15:53:36,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:53:36,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035578549] [2023-11-17 15:53:36,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035578549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:53:36,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:53:36,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 15:53:36,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090497810] [2023-11-17 15:53:36,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:53:36,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 15:53:36,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:53:36,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 15:53:36,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-11-17 15:53:36,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 425 out of 1212 [2023-11-17 15:53:36,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 63 transitions, 278 flow. Second operand has 13 states, 13 states have (on average 427.6923076923077) internal successors, (5560), 13 states have internal predecessors, (5560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:36,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:53:36,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 425 of 1212 [2023-11-17 15:53:36,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:53:39,121 INFO L124 PetriNetUnfolderBase]: 4876/7687 cut-off events. [2023-11-17 15:53:39,121 INFO L125 PetriNetUnfolderBase]: For 6863/6863 co-relation queries the response was YES. [2023-11-17 15:53:39,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21826 conditions, 7687 events. 4876/7687 cut-off events. For 6863/6863 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 47583 event pairs, 553 based on Foata normal form. 1/7687 useless extension candidates. Maximal degree in co-relation 21803. Up to 2296 conditions per place. [2023-11-17 15:53:39,174 INFO L140 encePairwiseOnDemand]: 1198/1212 looper letters, 179 selfloop transitions, 35 changer transitions 7/221 dead transitions. [2023-11-17 15:53:39,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 221 transitions, 1300 flow [2023-11-17 15:53:39,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 15:53:39,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 15:53:39,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 6124 transitions. [2023-11-17 15:53:39,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3609146628948609 [2023-11-17 15:53:39,193 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 6124 transitions. [2023-11-17 15:53:39,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 6124 transitions. [2023-11-17 15:53:39,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:53:39,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 6124 transitions. [2023-11-17 15:53:39,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 437.42857142857144) internal successors, (6124), 14 states have internal predecessors, (6124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:39,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 1212.0) internal successors, (18180), 15 states have internal predecessors, (18180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:39,229 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 1212.0) internal successors, (18180), 15 states have internal predecessors, (18180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:39,230 INFO L175 Difference]: Start difference. First operand has 79 places, 63 transitions, 278 flow. Second operand 14 states and 6124 transitions. [2023-11-17 15:53:39,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 221 transitions, 1300 flow [2023-11-17 15:53:39,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 221 transitions, 1273 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-11-17 15:53:39,293 INFO L231 Difference]: Finished difference. Result has 94 places, 88 transitions, 560 flow [2023-11-17 15:53:39,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1212, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=560, PETRI_PLACES=94, PETRI_TRANSITIONS=88} [2023-11-17 15:53:39,295 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 52 predicate places. [2023-11-17 15:53:39,295 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 88 transitions, 560 flow [2023-11-17 15:53:39,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 427.6923076923077) internal successors, (5560), 13 states have internal predecessors, (5560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:39,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:53:39,296 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] [2023-11-17 15:53:39,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 15:53:39,297 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:53:39,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:53:39,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1428572317, now seen corresponding path program 3 times [2023-11-17 15:53:39,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:53:39,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020177227] [2023-11-17 15:53:39,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:53:39,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:53:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:53:41,223 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 15:53:41,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:53:41,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020177227] [2023-11-17 15:53:41,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020177227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:53:41,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:53:41,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 15:53:41,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204793688] [2023-11-17 15:53:41,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:53:41,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 15:53:41,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:53:41,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 15:53:41,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-17 15:53:41,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 453 out of 1212 [2023-11-17 15:53:41,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 88 transitions, 560 flow. Second operand has 9 states, 9 states have (on average 456.8888888888889) internal successors, (4112), 9 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:41,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:53:41,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 453 of 1212 [2023-11-17 15:53:41,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:53:43,173 INFO L124 PetriNetUnfolderBase]: 5343/8664 cut-off events. [2023-11-17 15:53:43,173 INFO L125 PetriNetUnfolderBase]: For 19726/19726 co-relation queries the response was YES. [2023-11-17 15:53:43,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30438 conditions, 8664 events. 5343/8664 cut-off events. For 19726/19726 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 56759 event pairs, 1338 based on Foata normal form. 1/8664 useless extension candidates. Maximal degree in co-relation 30409. Up to 4294 conditions per place. [2023-11-17 15:53:43,230 INFO L140 encePairwiseOnDemand]: 1202/1212 looper letters, 198 selfloop transitions, 35 changer transitions 7/240 dead transitions. [2023-11-17 15:53:43,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 240 transitions, 1942 flow [2023-11-17 15:53:43,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 15:53:43,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 15:53:43,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4217 transitions. [2023-11-17 15:53:43,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3865969930326366 [2023-11-17 15:53:43,239 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4217 transitions. [2023-11-17 15:53:43,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4217 transitions. [2023-11-17 15:53:43,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:53:43,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4217 transitions. [2023-11-17 15:53:43,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 468.55555555555554) internal successors, (4217), 9 states have internal predecessors, (4217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:43,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1212.0) internal successors, (12120), 10 states have internal predecessors, (12120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:43,260 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1212.0) internal successors, (12120), 10 states have internal predecessors, (12120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:43,261 INFO L175 Difference]: Start difference. First operand has 94 places, 88 transitions, 560 flow. Second operand 9 states and 4217 transitions. [2023-11-17 15:53:43,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 240 transitions, 1942 flow [2023-11-17 15:53:43,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 240 transitions, 1881 flow, removed 29 selfloop flow, removed 3 redundant places. [2023-11-17 15:53:43,424 INFO L231 Difference]: Finished difference. Result has 104 places, 103 transitions, 791 flow [2023-11-17 15:53:43,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1212, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=791, PETRI_PLACES=104, PETRI_TRANSITIONS=103} [2023-11-17 15:53:43,424 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 62 predicate places. [2023-11-17 15:53:43,425 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 103 transitions, 791 flow [2023-11-17 15:53:43,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 456.8888888888889) internal successors, (4112), 9 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:43,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:53:43,426 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] [2023-11-17 15:53:43,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 15:53:43,426 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:53:43,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:53:43,427 INFO L85 PathProgramCache]: Analyzing trace with hash -669507965, now seen corresponding path program 1 times [2023-11-17 15:53:43,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:53:43,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722466312] [2023-11-17 15:53:43,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:53:43,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:53:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:53:43,646 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 15:53:43,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:53:43,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722466312] [2023-11-17 15:53:43,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722466312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:53:43,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:53:43,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:53:43,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096583945] [2023-11-17 15:53:43,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:53:43,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:53:43,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:53:43,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:53:43,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:53:43,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 484 out of 1212 [2023-11-17 15:53:43,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 103 transitions, 791 flow. Second operand has 4 states, 4 states have (on average 492.75) internal successors, (1971), 4 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:43,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:53:43,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 484 of 1212 [2023-11-17 15:53:43,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:53:45,349 INFO L124 PetriNetUnfolderBase]: 7047/11909 cut-off events. [2023-11-17 15:53:45,350 INFO L125 PetriNetUnfolderBase]: For 34308/34308 co-relation queries the response was YES. [2023-11-17 15:53:45,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42834 conditions, 11909 events. 7047/11909 cut-off events. For 34308/34308 co-relation queries the response was YES. Maximal size of possible extension queue 745. Compared 86905 event pairs, 2725 based on Foata normal form. 198/12106 useless extension candidates. Maximal degree in co-relation 42800. Up to 6361 conditions per place. [2023-11-17 15:53:45,623 INFO L140 encePairwiseOnDemand]: 1206/1212 looper letters, 182 selfloop transitions, 31 changer transitions 0/213 dead transitions. [2023-11-17 15:53:45,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 213 transitions, 2104 flow [2023-11-17 15:53:45,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:53:45,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:53:45,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2506 transitions. [2023-11-17 15:53:45,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41353135313531353 [2023-11-17 15:53:45,629 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2506 transitions. [2023-11-17 15:53:45,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2506 transitions. [2023-11-17 15:53:45,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:53:45,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2506 transitions. [2023-11-17 15:53:45,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 501.2) internal successors, (2506), 5 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:45,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1212.0) internal successors, (7272), 6 states have internal predecessors, (7272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:45,640 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1212.0) internal successors, (7272), 6 states have internal predecessors, (7272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:45,640 INFO L175 Difference]: Start difference. First operand has 104 places, 103 transitions, 791 flow. Second operand 5 states and 2506 transitions. [2023-11-17 15:53:45,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 213 transitions, 2104 flow [2023-11-17 15:53:45,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 213 transitions, 2010 flow, removed 18 selfloop flow, removed 3 redundant places. [2023-11-17 15:53:45,933 INFO L231 Difference]: Finished difference. Result has 108 places, 130 transitions, 1168 flow [2023-11-17 15:53:45,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1212, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1168, PETRI_PLACES=108, PETRI_TRANSITIONS=130} [2023-11-17 15:53:45,934 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 66 predicate places. [2023-11-17 15:53:45,934 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 130 transitions, 1168 flow [2023-11-17 15:53:45,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 492.75) internal successors, (1971), 4 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:45,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:53:45,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:53:45,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-17 15:53:45,935 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:53:45,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:53:45,936 INFO L85 PathProgramCache]: Analyzing trace with hash 2066950595, now seen corresponding path program 2 times [2023-11-17 15:53:45,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:53:45,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292107350] [2023-11-17 15:53:45,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:53:45,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:53:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:53:46,157 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 15:53:46,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:53:46,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292107350] [2023-11-17 15:53:46,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292107350] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:53:46,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:53:46,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:53:46,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628506480] [2023-11-17 15:53:46,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:53:46,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:53:46,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:53:46,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:53:46,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:53:46,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 484 out of 1212 [2023-11-17 15:53:46,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 130 transitions, 1168 flow. Second operand has 4 states, 4 states have (on average 492.75) internal successors, (1971), 4 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:46,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:53:46,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 484 of 1212 [2023-11-17 15:53:46,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:53:48,595 INFO L124 PetriNetUnfolderBase]: 9159/15384 cut-off events. [2023-11-17 15:53:48,595 INFO L125 PetriNetUnfolderBase]: For 49000/49000 co-relation queries the response was YES. [2023-11-17 15:53:48,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59387 conditions, 15384 events. 9159/15384 cut-off events. For 49000/49000 co-relation queries the response was YES. Maximal size of possible extension queue 987. Compared 117551 event pairs, 2695 based on Foata normal form. 137/15520 useless extension candidates. Maximal degree in co-relation 59351. Up to 7328 conditions per place. [2023-11-17 15:53:48,715 INFO L140 encePairwiseOnDemand]: 1205/1212 looper letters, 174 selfloop transitions, 51 changer transitions 0/225 dead transitions. [2023-11-17 15:53:48,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 225 transitions, 2399 flow [2023-11-17 15:53:48,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:53:48,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:53:48,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2015 transitions. [2023-11-17 15:53:48,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41563531353135313 [2023-11-17 15:53:48,719 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2015 transitions. [2023-11-17 15:53:48,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2015 transitions. [2023-11-17 15:53:48,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:53:48,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2015 transitions. [2023-11-17 15:53:48,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 503.75) internal successors, (2015), 4 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:48,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1212.0) internal successors, (6060), 5 states have internal predecessors, (6060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:48,727 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1212.0) internal successors, (6060), 5 states have internal predecessors, (6060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:48,727 INFO L175 Difference]: Start difference. First operand has 108 places, 130 transitions, 1168 flow. Second operand 4 states and 2015 transitions. [2023-11-17 15:53:48,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 225 transitions, 2399 flow [2023-11-17 15:53:49,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 225 transitions, 2399 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 15:53:49,059 INFO L231 Difference]: Finished difference. Result has 114 places, 158 transitions, 1732 flow [2023-11-17 15:53:49,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1212, PETRI_DIFFERENCE_MINUEND_FLOW=1136, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1732, PETRI_PLACES=114, PETRI_TRANSITIONS=158} [2023-11-17 15:53:49,060 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 72 predicate places. [2023-11-17 15:53:49,060 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 158 transitions, 1732 flow [2023-11-17 15:53:49,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 492.75) internal successors, (1971), 4 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:49,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:53:49,061 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] [2023-11-17 15:53:49,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-17 15:53:49,061 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:53:49,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:53:49,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1901369947, now seen corresponding path program 4 times [2023-11-17 15:53:49,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:53:49,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812987889] [2023-11-17 15:53:49,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:53:49,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:53:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:53:50,799 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 15:53:50,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:53:50,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812987889] [2023-11-17 15:53:50,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812987889] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:53:50,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:53:50,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 15:53:50,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882440266] [2023-11-17 15:53:50,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:53:50,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 15:53:50,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:53:50,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 15:53:50,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-17 15:53:50,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 442 out of 1212 [2023-11-17 15:53:50,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 158 transitions, 1732 flow. Second operand has 10 states, 10 states have (on average 445.5) internal successors, (4455), 10 states have internal predecessors, (4455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:50,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:53:50,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 442 of 1212 [2023-11-17 15:53:50,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:53:56,330 INFO L124 PetriNetUnfolderBase]: 12115/20744 cut-off events. [2023-11-17 15:53:56,330 INFO L125 PetriNetUnfolderBase]: For 83003/83003 co-relation queries the response was YES. [2023-11-17 15:53:56,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86584 conditions, 20744 events. 12115/20744 cut-off events. For 83003/83003 co-relation queries the response was YES. Maximal size of possible extension queue 1339. Compared 168934 event pairs, 3071 based on Foata normal form. 1/20744 useless extension candidates. Maximal degree in co-relation 86545. Up to 8095 conditions per place. [2023-11-17 15:53:56,542 INFO L140 encePairwiseOnDemand]: 1198/1212 looper letters, 304 selfloop transitions, 147 changer transitions 7/458 dead transitions. [2023-11-17 15:53:56,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 458 transitions, 4920 flow [2023-11-17 15:53:56,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 15:53:56,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 15:53:56,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 6862 transitions. [2023-11-17 15:53:56,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37744774477447746 [2023-11-17 15:53:56,557 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 6862 transitions. [2023-11-17 15:53:56,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 6862 transitions. [2023-11-17 15:53:56,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:53:56,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 6862 transitions. [2023-11-17 15:53:56,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 457.46666666666664) internal successors, (6862), 15 states have internal predecessors, (6862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:56,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 1212.0) internal successors, (19392), 16 states have internal predecessors, (19392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:56,591 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 1212.0) internal successors, (19392), 16 states have internal predecessors, (19392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:56,592 INFO L175 Difference]: Start difference. First operand has 114 places, 158 transitions, 1732 flow. Second operand 15 states and 6862 transitions. [2023-11-17 15:53:56,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 458 transitions, 4920 flow [2023-11-17 15:53:57,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 458 transitions, 4914 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-17 15:53:57,221 INFO L231 Difference]: Finished difference. Result has 139 places, 241 transitions, 3192 flow [2023-11-17 15:53:57,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1212, PETRI_DIFFERENCE_MINUEND_FLOW=1728, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3192, PETRI_PLACES=139, PETRI_TRANSITIONS=241} [2023-11-17 15:53:57,222 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 97 predicate places. [2023-11-17 15:53:57,222 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 241 transitions, 3192 flow [2023-11-17 15:53:57,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 445.5) internal successors, (4455), 10 states have internal predecessors, (4455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:57,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:53:57,224 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] [2023-11-17 15:53:57,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-17 15:53:57,224 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:53:57,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:53:57,225 INFO L85 PathProgramCache]: Analyzing trace with hash -5690759, now seen corresponding path program 5 times [2023-11-17 15:53:57,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:53:57,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745255517] [2023-11-17 15:53:57,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:53:57,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:53:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:53:58,776 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 15:53:58,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:53:58,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745255517] [2023-11-17 15:53:58,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745255517] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:53:58,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:53:58,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 15:53:58,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138949683] [2023-11-17 15:53:58,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:53:58,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 15:53:58,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:53:58,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 15:53:58,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-17 15:53:58,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 453 out of 1212 [2023-11-17 15:53:58,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 241 transitions, 3192 flow. Second operand has 9 states, 9 states have (on average 456.8888888888889) internal successors, (4112), 9 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:53:58,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:53:58,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 453 of 1212 [2023-11-17 15:53:58,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:54:03,104 INFO L124 PetriNetUnfolderBase]: 12815/22150 cut-off events. [2023-11-17 15:54:03,105 INFO L125 PetriNetUnfolderBase]: For 139709/139709 co-relation queries the response was YES. [2023-11-17 15:54:03,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109798 conditions, 22150 events. 12815/22150 cut-off events. For 139709/139709 co-relation queries the response was YES. Maximal size of possible extension queue 1418. Compared 183587 event pairs, 3275 based on Foata normal form. 1/22150 useless extension candidates. Maximal degree in co-relation 109748. Up to 11744 conditions per place. [2023-11-17 15:54:03,339 INFO L140 encePairwiseOnDemand]: 1204/1212 looper letters, 363 selfloop transitions, 38 changer transitions 7/408 dead transitions. [2023-11-17 15:54:03,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 408 transitions, 5540 flow [2023-11-17 15:54:03,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 15:54:03,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 15:54:03,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4204 transitions. [2023-11-17 15:54:03,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854052071873854 [2023-11-17 15:54:03,348 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4204 transitions. [2023-11-17 15:54:03,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4204 transitions. [2023-11-17 15:54:03,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:54:03,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4204 transitions. [2023-11-17 15:54:03,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 467.1111111111111) internal successors, (4204), 9 states have internal predecessors, (4204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:03,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1212.0) internal successors, (12120), 10 states have internal predecessors, (12120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:03,368 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1212.0) internal successors, (12120), 10 states have internal predecessors, (12120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:03,368 INFO L175 Difference]: Start difference. First operand has 139 places, 241 transitions, 3192 flow. Second operand 9 states and 4204 transitions. [2023-11-17 15:54:03,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 408 transitions, 5540 flow [2023-11-17 15:54:04,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 408 transitions, 5480 flow, removed 30 selfloop flow, removed 1 redundant places. [2023-11-17 15:54:04,902 INFO L231 Difference]: Finished difference. Result has 152 places, 248 transitions, 3382 flow [2023-11-17 15:54:04,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1212, PETRI_DIFFERENCE_MINUEND_FLOW=3154, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3382, PETRI_PLACES=152, PETRI_TRANSITIONS=248} [2023-11-17 15:54:04,903 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 110 predicate places. [2023-11-17 15:54:04,903 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 248 transitions, 3382 flow [2023-11-17 15:54:04,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 456.8888888888889) internal successors, (4112), 9 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:04,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:54:04,904 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] [2023-11-17 15:54:04,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-17 15:54:04,904 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:54:04,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:54:04,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1722835919, now seen corresponding path program 6 times [2023-11-17 15:54:04,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:54:04,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964491799] [2023-11-17 15:54:04,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:04,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:54:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:06,263 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 15:54:06,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:54:06,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964491799] [2023-11-17 15:54:06,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964491799] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:54:06,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:54:06,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 15:54:06,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338838357] [2023-11-17 15:54:06,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:54:06,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 15:54:06,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:54:06,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 15:54:06,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-17 15:54:06,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 442 out of 1212 [2023-11-17 15:54:06,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 248 transitions, 3382 flow. Second operand has 10 states, 10 states have (on average 445.5) internal successors, (4455), 10 states have internal predecessors, (4455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:06,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:54:06,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 442 of 1212 [2023-11-17 15:54:06,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:54:13,366 INFO L124 PetriNetUnfolderBase]: 21621/37366 cut-off events. [2023-11-17 15:54:13,366 INFO L125 PetriNetUnfolderBase]: For 285570/285570 co-relation queries the response was YES. [2023-11-17 15:54:13,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190259 conditions, 37366 events. 21621/37366 cut-off events. For 285570/285570 co-relation queries the response was YES. Maximal size of possible extension queue 2390. Compared 334077 event pairs, 7178 based on Foata normal form. 2/37367 useless extension candidates. Maximal degree in co-relation 190202. Up to 9376 conditions per place. [2023-11-17 15:54:13,812 INFO L140 encePairwiseOnDemand]: 1199/1212 looper letters, 541 selfloop transitions, 151 changer transitions 16/708 dead transitions. [2023-11-17 15:54:13,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 708 transitions, 9690 flow [2023-11-17 15:54:13,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-17 15:54:13,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-17 15:54:13,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 7789 transitions. [2023-11-17 15:54:13,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37803339157445154 [2023-11-17 15:54:13,824 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 7789 transitions. [2023-11-17 15:54:13,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 7789 transitions. [2023-11-17 15:54:13,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:54:13,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 7789 transitions. [2023-11-17 15:54:13,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 458.1764705882353) internal successors, (7789), 17 states have internal predecessors, (7789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:13,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 1212.0) internal successors, (21816), 18 states have internal predecessors, (21816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:13,850 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 1212.0) internal successors, (21816), 18 states have internal predecessors, (21816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:13,851 INFO L175 Difference]: Start difference. First operand has 152 places, 248 transitions, 3382 flow. Second operand 17 states and 7789 transitions. [2023-11-17 15:54:13,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 708 transitions, 9690 flow [2023-11-17 15:54:17,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 708 transitions, 9493 flow, removed 66 selfloop flow, removed 2 redundant places. [2023-11-17 15:54:17,388 INFO L231 Difference]: Finished difference. Result has 180 places, 335 transitions, 5435 flow [2023-11-17 15:54:17,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1212, PETRI_DIFFERENCE_MINUEND_FLOW=3333, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5435, PETRI_PLACES=180, PETRI_TRANSITIONS=335} [2023-11-17 15:54:17,388 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 138 predicate places. [2023-11-17 15:54:17,388 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 335 transitions, 5435 flow [2023-11-17 15:54:17,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 445.5) internal successors, (4455), 10 states have internal predecessors, (4455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:17,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:54:17,389 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] [2023-11-17 15:54:17,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-17 15:54:17,390 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:54:17,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:54:17,390 INFO L85 PathProgramCache]: Analyzing trace with hash -2065173477, now seen corresponding path program 7 times [2023-11-17 15:54:17,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:54:17,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40931522] [2023-11-17 15:54:17,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:17,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:54:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:19,094 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 15:54:19,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:54:19,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40931522] [2023-11-17 15:54:19,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40931522] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:54:19,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:54:19,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 15:54:19,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679337895] [2023-11-17 15:54:19,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:54:19,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 15:54:19,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:54:19,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 15:54:19,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-17 15:54:19,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 442 out of 1212 [2023-11-17 15:54:19,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 335 transitions, 5435 flow. Second operand has 10 states, 10 states have (on average 445.5) internal successors, (4455), 10 states have internal predecessors, (4455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:19,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:54:19,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 442 of 1212 [2023-11-17 15:54:19,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:54:28,329 INFO L124 PetriNetUnfolderBase]: 25446/44217 cut-off events. [2023-11-17 15:54:28,329 INFO L125 PetriNetUnfolderBase]: For 392034/392034 co-relation queries the response was YES. [2023-11-17 15:54:28,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242470 conditions, 44217 events. 25446/44217 cut-off events. For 392034/392034 co-relation queries the response was YES. Maximal size of possible extension queue 2813. Compared 407639 event pairs, 10391 based on Foata normal form. 1/44217 useless extension candidates. Maximal degree in co-relation 242399. Up to 26306 conditions per place. [2023-11-17 15:54:29,203 INFO L140 encePairwiseOnDemand]: 1199/1212 looper letters, 416 selfloop transitions, 210 changer transitions 7/633 dead transitions. [2023-11-17 15:54:29,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 633 transitions, 9913 flow [2023-11-17 15:54:29,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 15:54:29,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 15:54:29,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 5481 transitions. [2023-11-17 15:54:29,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37685643564356436 [2023-11-17 15:54:29,209 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 5481 transitions. [2023-11-17 15:54:29,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 5481 transitions. [2023-11-17 15:54:29,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:54:29,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 5481 transitions. [2023-11-17 15:54:29,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 456.75) internal successors, (5481), 12 states have internal predecessors, (5481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:29,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 1212.0) internal successors, (15756), 13 states have internal predecessors, (15756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:29,227 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 1212.0) internal successors, (15756), 13 states have internal predecessors, (15756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:29,228 INFO L175 Difference]: Start difference. First operand has 180 places, 335 transitions, 5435 flow. Second operand 12 states and 5481 transitions. [2023-11-17 15:54:29,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 633 transitions, 9913 flow [2023-11-17 15:54:35,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 633 transitions, 9707 flow, removed 78 selfloop flow, removed 3 redundant places. [2023-11-17 15:54:35,798 INFO L231 Difference]: Finished difference. Result has 196 places, 401 transitions, 7087 flow [2023-11-17 15:54:35,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1212, PETRI_DIFFERENCE_MINUEND_FLOW=5318, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7087, PETRI_PLACES=196, PETRI_TRANSITIONS=401} [2023-11-17 15:54:35,799 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 154 predicate places. [2023-11-17 15:54:35,799 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 401 transitions, 7087 flow [2023-11-17 15:54:35,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 445.5) internal successors, (4455), 10 states have internal predecessors, (4455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:35,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:54:35,800 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] [2023-11-17 15:54:35,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-17 15:54:35,800 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:54:35,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:54:35,800 INFO L85 PathProgramCache]: Analyzing trace with hash 608880297, now seen corresponding path program 8 times [2023-11-17 15:54:35,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:54:35,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002336236] [2023-11-17 15:54:35,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:35,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:54:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:37,139 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 15:54:37,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:54:37,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002336236] [2023-11-17 15:54:37,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002336236] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:54:37,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:54:37,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 15:54:37,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47896777] [2023-11-17 15:54:37,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:54:37,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 15:54:37,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:54:37,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 15:54:37,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-17 15:54:37,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 442 out of 1212 [2023-11-17 15:54:37,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 401 transitions, 7087 flow. Second operand has 10 states, 10 states have (on average 445.5) internal successors, (4455), 10 states have internal predecessors, (4455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:37,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:54:37,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 442 of 1212 [2023-11-17 15:54:37,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:54:46,853 INFO L124 PetriNetUnfolderBase]: 25572/44541 cut-off events. [2023-11-17 15:54:46,853 INFO L125 PetriNetUnfolderBase]: For 491329/491329 co-relation queries the response was YES. [2023-11-17 15:54:47,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261367 conditions, 44541 events. 25572/44541 cut-off events. For 491329/491329 co-relation queries the response was YES. Maximal size of possible extension queue 2923. Compared 412541 event pairs, 11086 based on Foata normal form. 1/44541 useless extension candidates. Maximal degree in co-relation 261288. Up to 24342 conditions per place. [2023-11-17 15:54:47,732 INFO L140 encePairwiseOnDemand]: 1200/1212 looper letters, 480 selfloop transitions, 148 changer transitions 8/636 dead transitions. [2023-11-17 15:54:47,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 636 transitions, 11347 flow [2023-11-17 15:54:47,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 15:54:47,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 15:54:47,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 4565 transitions. [2023-11-17 15:54:47,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37665016501650167 [2023-11-17 15:54:47,736 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 4565 transitions. [2023-11-17 15:54:47,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 4565 transitions. [2023-11-17 15:54:47,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:54:47,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 4565 transitions. [2023-11-17 15:54:47,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 456.5) internal successors, (4565), 10 states have internal predecessors, (4565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:47,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1212.0) internal successors, (13332), 11 states have internal predecessors, (13332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:47,751 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1212.0) internal successors, (13332), 11 states have internal predecessors, (13332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:47,751 INFO L175 Difference]: Start difference. First operand has 196 places, 401 transitions, 7087 flow. Second operand 10 states and 4565 transitions. [2023-11-17 15:54:47,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 636 transitions, 11347 flow [2023-11-17 15:54:58,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 636 transitions, 11159 flow, removed 94 selfloop flow, removed 1 redundant places. [2023-11-17 15:54:58,603 INFO L231 Difference]: Finished difference. Result has 209 places, 423 transitions, 7826 flow [2023-11-17 15:54:58,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1212, PETRI_DIFFERENCE_MINUEND_FLOW=7001, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7826, PETRI_PLACES=209, PETRI_TRANSITIONS=423} [2023-11-17 15:54:58,603 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 167 predicate places. [2023-11-17 15:54:58,603 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 423 transitions, 7826 flow [2023-11-17 15:54:58,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 445.5) internal successors, (4455), 10 states have internal predecessors, (4455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:58,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:54:58,604 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] [2023-11-17 15:54:58,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-17 15:54:58,604 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:54:58,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:54:58,605 INFO L85 PathProgramCache]: Analyzing trace with hash 336178381, now seen corresponding path program 9 times [2023-11-17 15:54:58,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:54:58,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056051050] [2023-11-17 15:54:58,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:58,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:54:58,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:59,735 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 15:54:59,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:54:59,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056051050] [2023-11-17 15:54:59,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056051050] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:54:59,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:54:59,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 15:54:59,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583606701] [2023-11-17 15:54:59,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:54:59,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 15:54:59,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:54:59,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 15:54:59,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-17 15:54:59,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 442 out of 1212 [2023-11-17 15:54:59,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 423 transitions, 7826 flow. Second operand has 10 states, 10 states have (on average 445.5) internal successors, (4455), 10 states have internal predecessors, (4455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:54:59,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:54:59,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 442 of 1212 [2023-11-17 15:54:59,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:55:10,025 INFO L124 PetriNetUnfolderBase]: 25814/45187 cut-off events. [2023-11-17 15:55:10,026 INFO L125 PetriNetUnfolderBase]: For 529577/529577 co-relation queries the response was YES. [2023-11-17 15:55:10,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269616 conditions, 45187 events. 25814/45187 cut-off events. For 529577/529577 co-relation queries the response was YES. Maximal size of possible extension queue 2909. Compared 422162 event pairs, 10413 based on Foata normal form. 1/45187 useless extension candidates. Maximal degree in co-relation 269531. Up to 26352 conditions per place. [2023-11-17 15:55:10,926 INFO L140 encePairwiseOnDemand]: 1200/1212 looper letters, 357 selfloop transitions, 267 changer transitions 7/631 dead transitions. [2023-11-17 15:55:10,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 631 transitions, 11994 flow [2023-11-17 15:55:10,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 15:55:10,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 15:55:10,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 4563 transitions. [2023-11-17 15:55:10,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3764851485148515 [2023-11-17 15:55:10,930 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 4563 transitions. [2023-11-17 15:55:10,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 4563 transitions. [2023-11-17 15:55:10,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:55:10,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 4563 transitions. [2023-11-17 15:55:10,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 456.3) internal successors, (4563), 10 states have internal predecessors, (4563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:55:10,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1212.0) internal successors, (13332), 11 states have internal predecessors, (13332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:55:10,945 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1212.0) internal successors, (13332), 11 states have internal predecessors, (13332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:55:10,946 INFO L175 Difference]: Start difference. First operand has 209 places, 423 transitions, 7826 flow. Second operand 10 states and 4563 transitions. [2023-11-17 15:55:10,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 631 transitions, 11994 flow [2023-11-17 15:55:22,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 631 transitions, 11589 flow, removed 31 selfloop flow, removed 4 redundant places. [2023-11-17 15:55:22,617 INFO L231 Difference]: Finished difference. Result has 221 places, 472 transitions, 9693 flow [2023-11-17 15:55:22,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1212, PETRI_DIFFERENCE_MINUEND_FLOW=7553, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9693, PETRI_PLACES=221, PETRI_TRANSITIONS=472} [2023-11-17 15:55:22,618 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 179 predicate places. [2023-11-17 15:55:22,618 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 472 transitions, 9693 flow [2023-11-17 15:55:22,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 445.5) internal successors, (4455), 10 states have internal predecessors, (4455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:55:22,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:55:22,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:55:22,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-17 15:55:22,619 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:55:22,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:55:22,619 INFO L85 PathProgramCache]: Analyzing trace with hash -895706953, now seen corresponding path program 10 times [2023-11-17 15:55:22,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:55:22,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003778235] [2023-11-17 15:55:22,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:55:22,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:55:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:55:24,262 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 15:55:24,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:55:24,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003778235] [2023-11-17 15:55:24,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003778235] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:55:24,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:55:24,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 15:55:24,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686970281] [2023-11-17 15:55:24,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:55:24,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 15:55:24,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:55:24,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 15:55:24,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-17 15:55:24,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 453 out of 1212 [2023-11-17 15:55:24,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 472 transitions, 9693 flow. Second operand has 9 states, 9 states have (on average 456.8888888888889) internal successors, (4112), 9 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:55:24,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:55:24,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 453 of 1212 [2023-11-17 15:55:24,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:55:35,666 INFO L124 PetriNetUnfolderBase]: 25813/45178 cut-off events. [2023-11-17 15:55:35,667 INFO L125 PetriNetUnfolderBase]: For 605791/605791 co-relation queries the response was YES. [2023-11-17 15:55:36,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281642 conditions, 45178 events. 25813/45178 cut-off events. For 605791/605791 co-relation queries the response was YES. Maximal size of possible extension queue 2884. Compared 420789 event pairs, 6749 based on Foata normal form. 1/45178 useless extension candidates. Maximal degree in co-relation 281550. Up to 25172 conditions per place. [2023-11-17 15:55:36,745 INFO L140 encePairwiseOnDemand]: 1204/1212 looper letters, 637 selfloop transitions, 60 changer transitions 8/705 dead transitions. [2023-11-17 15:55:36,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 705 transitions, 14264 flow [2023-11-17 15:55:36,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 15:55:36,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 15:55:36,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4205 transitions. [2023-11-17 15:55:36,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854968830216355 [2023-11-17 15:55:36,748 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4205 transitions. [2023-11-17 15:55:36,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4205 transitions. [2023-11-17 15:55:36,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:55:36,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4205 transitions. [2023-11-17 15:55:36,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 467.22222222222223) internal successors, (4205), 9 states have internal predecessors, (4205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:55:36,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1212.0) internal successors, (12120), 10 states have internal predecessors, (12120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:55:36,758 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1212.0) internal successors, (12120), 10 states have internal predecessors, (12120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:55:36,758 INFO L175 Difference]: Start difference. First operand has 221 places, 472 transitions, 9693 flow. Second operand 9 states and 4205 transitions. [2023-11-17 15:55:36,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 705 transitions, 14264 flow [2023-11-17 15:55:49,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 705 transitions, 13934 flow, removed 78 selfloop flow, removed 2 redundant places. [2023-11-17 15:55:49,668 INFO L231 Difference]: Finished difference. Result has 232 places, 482 transitions, 9850 flow [2023-11-17 15:55:49,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1212, PETRI_DIFFERENCE_MINUEND_FLOW=9447, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9850, PETRI_PLACES=232, PETRI_TRANSITIONS=482} [2023-11-17 15:55:49,669 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 190 predicate places. [2023-11-17 15:55:49,669 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 482 transitions, 9850 flow [2023-11-17 15:55:49,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 456.8888888888889) internal successors, (4112), 9 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:55:49,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:55:49,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:55:49,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-17 15:55:49,670 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:55:49,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:55:49,670 INFO L85 PathProgramCache]: Analyzing trace with hash 2132057133, now seen corresponding path program 11 times [2023-11-17 15:55:49,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:55:49,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776249992] [2023-11-17 15:55:49,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:55:49,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:55:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:55:50,785 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 15:55:50,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:55:50,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776249992] [2023-11-17 15:55:50,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776249992] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:55:50,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:55:50,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 15:55:50,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465290898] [2023-11-17 15:55:50,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:55:50,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 15:55:50,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:55:50,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 15:55:50,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-17 15:55:50,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 442 out of 1212 [2023-11-17 15:55:50,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 482 transitions, 9850 flow. Second operand has 10 states, 10 states have (on average 445.5) internal successors, (4455), 10 states have internal predecessors, (4455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:55:50,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:55:50,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 442 of 1212 [2023-11-17 15:55:50,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand