/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 --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:55:31,217 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:55:31,273 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 11:55:31,313 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:55:31,314 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:55:31,314 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:55:31,315 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:55:31,315 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:55:31,316 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:55:31,316 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:55:31,316 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:55:31,323 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:55:31,324 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:55:31,327 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:55:31,328 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:55:31,328 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:55:31,329 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:55:31,329 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:55:31,330 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:55:31,330 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:55:31,330 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:55:31,331 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:55:31,331 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:55:31,331 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:55:31,332 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:55:31,332 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:55:31,332 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:55:31,332 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:55:31,333 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:55:31,333 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:55:31,334 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:55:31,334 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:55:31,334 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:55:31,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:55:31,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:55:31,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:55:31,607 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:55:31,608 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:55:31,609 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c [2023-11-17 11:55:32,844 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:55:33,009 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:55:33,010 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c [2023-11-17 11:55:33,018 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c3ac62c8/236c3fe8c69047cdbe3a89f2f029c196/FLAG71f3f1b3a [2023-11-17 11:55:33,031 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c3ac62c8/236c3fe8c69047cdbe3a89f2f029c196 [2023-11-17 11:55:33,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:55:33,035 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:55:33,036 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:55:33,036 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:55:33,040 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:55:33,041 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:55:33" (1/1) ... [2023-11-17 11:55:33,041 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44b4d1f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:55:33, skipping insertion in model container [2023-11-17 11:55:33,042 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:55:33" (1/1) ... [2023-11-17 11:55:33,077 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:55:33,241 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-nzb-file-subst.wvr.c[6540,6553] [2023-11-17 11:55:33,252 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:55:33,261 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:55:33,299 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-nzb-file-subst.wvr.c[6540,6553] [2023-11-17 11:55:33,302 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:55:33,322 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:55:33,323 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:55:33 WrapperNode [2023-11-17 11:55:33,323 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:55:33,324 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:55:33,324 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:55:33,324 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:55:33,329 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:55:33" (1/1) ... [2023-11-17 11:55:33,341 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:55:33" (1/1) ... [2023-11-17 11:55:33,385 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 606 [2023-11-17 11:55:33,386 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:55:33,386 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:55:33,386 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:55:33,386 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:55:33,395 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:55:33" (1/1) ... [2023-11-17 11:55:33,395 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:55:33" (1/1) ... [2023-11-17 11:55:33,400 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:55:33" (1/1) ... [2023-11-17 11:55:33,401 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:55:33" (1/1) ... [2023-11-17 11:55:33,416 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:55:33" (1/1) ... [2023-11-17 11:55:33,422 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:55:33" (1/1) ... [2023-11-17 11:55:33,425 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:55:33" (1/1) ... [2023-11-17 11:55:33,428 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:55:33" (1/1) ... [2023-11-17 11:55:33,433 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:55:33,434 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:55:33,434 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:55:33,434 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:55:33,435 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:55:33" (1/1) ... [2023-11-17 11:55:33,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:55:33,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:55:33,480 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 11:55:33,482 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 11:55:33,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:55:33,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:55:33,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:55:33,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 11:55:33,506 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 11:55:33,506 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 11:55:33,506 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 11:55:33,506 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 11:55:33,506 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 11:55:33,506 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 11:55:33,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:55:33,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 11:55:33,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:55:33,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:55:33,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:55:33,509 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 11:55:33,628 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:55:33,630 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:55:34,387 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:55:35,150 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:55:35,150 INFO L307 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-17 11:55:35,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:55:35 BoogieIcfgContainer [2023-11-17 11:55:35,153 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:55:35,157 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:55:35,157 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:55:35,159 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:55:35,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:55:33" (1/3) ... [2023-11-17 11:55:35,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af0c63a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:55:35, skipping insertion in model container [2023-11-17 11:55:35,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:55:33" (2/3) ... [2023-11-17 11:55:35,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af0c63a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:55:35, skipping insertion in model container [2023-11-17 11:55:35,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:55:35" (3/3) ... [2023-11-17 11:55:35,162 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-subst.wvr.c [2023-11-17 11:55:35,179 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:55:35,179 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 11:55:35,180 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:55:35,294 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-17 11:55:35,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 51 transitions, 123 flow [2023-11-17 11:55:35,378 INFO L124 PetriNetUnfolderBase]: 12/48 cut-off events. [2023-11-17 11:55:35,378 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 11:55:35,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 12/48 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 79 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2023-11-17 11:55:35,384 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 51 transitions, 123 flow [2023-11-17 11:55:35,388 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 47 transitions, 112 flow [2023-11-17 11:55:35,396 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:55:35,412 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 47 transitions, 112 flow [2023-11-17 11:55:35,415 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 47 transitions, 112 flow [2023-11-17 11:55:35,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 47 transitions, 112 flow [2023-11-17 11:55:35,438 INFO L124 PetriNetUnfolderBase]: 12/47 cut-off events. [2023-11-17 11:55:35,438 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 11:55:35,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 12/47 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 78 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2023-11-17 11:55:35,440 INFO L119 LiptonReduction]: Number of co-enabled transitions 756 [2023-11-17 11:55:46,761 INFO L134 LiptonReduction]: Checked pairs total: 675 [2023-11-17 11:55:46,761 INFO L136 LiptonReduction]: Total number of compositions: 25 [2023-11-17 11:55:46,775 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:55:46,780 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;@7e5a7fee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:55:46,780 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 11:55:46,790 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:55:46,790 INFO L124 PetriNetUnfolderBase]: 9/30 cut-off events. [2023-11-17 11:55:46,790 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 11:55:46,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:55:46,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:55:46,791 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 11:55:46,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:55:46,796 INFO L85 PathProgramCache]: Analyzing trace with hash 201403535, now seen corresponding path program 1 times [2023-11-17 11:55:46,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:55:46,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939681262] [2023-11-17 11:55:46,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:55:46,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:55:46,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:55:47,224 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 11:55:47,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:55:47,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939681262] [2023-11-17 11:55:47,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939681262] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:55:47,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:55:47,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:55:47,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685879669] [2023-11-17 11:55:47,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:55:47,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:55:47,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:55:47,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:55:47,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:55:47,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:55:47,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 31 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 11:55:47,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:55:47,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:55:47,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:55:47,509 INFO L124 PetriNetUnfolderBase]: 305/416 cut-off events. [2023-11-17 11:55:47,510 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-17 11:55:47,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 876 conditions, 416 events. 305/416 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 896 event pairs, 138 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 670. Up to 414 conditions per place. [2023-11-17 11:55:47,518 INFO L140 encePairwiseOnDemand]: 69/76 looper letters, 28 selfloop transitions, 6 changer transitions 0/34 dead transitions. [2023-11-17 11:55:47,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 34 transitions, 154 flow [2023-11-17 11:55:47,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:55:47,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:55:47,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2023-11-17 11:55:47,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2543859649122807 [2023-11-17 11:55:47,532 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 58 transitions. [2023-11-17 11:55:47,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 58 transitions. [2023-11-17 11:55:47,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:55:47,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 58 transitions. [2023-11-17 11:55:47,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 11:55:47,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states 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 11:55:47,545 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states 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 11:55:47,546 INFO L175 Difference]: Start difference. First operand has 32 places, 31 transitions, 80 flow. Second operand 3 states and 58 transitions. [2023-11-17 11:55:47,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 34 transitions, 154 flow [2023-11-17 11:55:47,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 34 transitions, 142 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-17 11:55:47,556 INFO L231 Difference]: Finished difference. Result has 29 places, 34 transitions, 100 flow [2023-11-17 11:55:47,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=29, PETRI_TRANSITIONS=34} [2023-11-17 11:55:47,561 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -3 predicate places. [2023-11-17 11:55:47,561 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 34 transitions, 100 flow [2023-11-17 11:55:47,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 11:55:47,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:55:47,562 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] [2023-11-17 11:55:47,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:55:47,562 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 11:55:47,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:55:47,571 INFO L85 PathProgramCache]: Analyzing trace with hash 164318210, now seen corresponding path program 1 times [2023-11-17 11:55:47,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:55:47,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067263795] [2023-11-17 11:55:47,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:55:47,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:55:47,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:55:47,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 11:55:47,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:55:47,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067263795] [2023-11-17 11:55:47,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067263795] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:55:47,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637012424] [2023-11-17 11:55:47,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:55:47,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:55:47,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:55:47,845 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 11:55:47,868 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 11:55:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:55:48,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-17 11:55:48,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:55:48,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 11:55:48,158 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:55:48,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 11:55:48,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637012424] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:55:48,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:55:48,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-11-17 11:55:48,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164011908] [2023-11-17 11:55:48,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:55:48,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:55:48,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:55:48,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:55:48,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:55:48,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:55:48,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 34 transitions, 100 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 11:55:48,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:55:48,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:55:48,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:55:48,454 INFO L124 PetriNetUnfolderBase]: 305/425 cut-off events. [2023-11-17 11:55:48,455 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:55:48,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 889 conditions, 425 events. 305/425 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 896 event pairs, 138 based on Foata normal form. 6/266 useless extension candidates. Maximal degree in co-relation 840. Up to 414 conditions per place. [2023-11-17 11:55:48,459 INFO L140 encePairwiseOnDemand]: 69/76 looper letters, 28 selfloop transitions, 15 changer transitions 0/43 dead transitions. [2023-11-17 11:55:48,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 43 transitions, 222 flow [2023-11-17 11:55:48,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:55:48,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:55:48,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 94 transitions. [2023-11-17 11:55:48,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.20614035087719298 [2023-11-17 11:55:48,463 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 94 transitions. [2023-11-17 11:55:48,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 94 transitions. [2023-11-17 11:55:48,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:55:48,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 94 transitions. [2023-11-17 11:55:48,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 11:55:48,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 76.0) internal successors, (532), 7 states have internal predecessors, (532), 0 states have call successors, (0), 0 states 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 11:55:48,469 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 76.0) internal successors, (532), 7 states have internal predecessors, (532), 0 states have call successors, (0), 0 states 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 11:55:48,470 INFO L175 Difference]: Start difference. First operand has 29 places, 34 transitions, 100 flow. Second operand 6 states and 94 transitions. [2023-11-17 11:55:48,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 43 transitions, 222 flow [2023-11-17 11:55:48,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 43 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:55:48,480 INFO L231 Difference]: Finished difference. Result has 36 places, 43 transitions, 190 flow [2023-11-17 11:55:48,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=190, PETRI_PLACES=36, PETRI_TRANSITIONS=43} [2023-11-17 11:55:48,481 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2023-11-17 11:55:48,481 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 43 transitions, 190 flow [2023-11-17 11:55:48,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 11:55:48,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:55:48,482 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:55:48,496 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 11:55:48,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:55:48,690 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 11:55:48,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:55:48,690 INFO L85 PathProgramCache]: Analyzing trace with hash -544190339, now seen corresponding path program 2 times [2023-11-17 11:55:48,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:55:48,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807673100] [2023-11-17 11:55:48,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:55:48,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:55:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:55:48,894 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-17 11:55:48,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:55:48,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807673100] [2023-11-17 11:55:48,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807673100] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:55:48,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265088278] [2023-11-17 11:55:48,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 11:55:48,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:55:48,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:55:48,897 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:55:48,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 11:55:49,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-17 11:55:49,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:55:49,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-17 11:55:49,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:55:50,147 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 11:55:50,148 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 11:55:50,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265088278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:55:50,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 11:55:50,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-11-17 11:55:50,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019598504] [2023-11-17 11:55:50,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:55:50,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:55:50,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:55:50,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:55:50,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-17 11:55:50,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:55:50,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 43 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 11:55:50,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:55:50,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:55:50,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:55:50,784 INFO L124 PetriNetUnfolderBase]: 428/629 cut-off events. [2023-11-17 11:55:50,784 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-17 11:55:50,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1332 conditions, 629 events. 428/629 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1819 event pairs, 138 based on Foata normal form. 1/396 useless extension candidates. Maximal degree in co-relation 1244. Up to 400 conditions per place. [2023-11-17 11:55:50,788 INFO L140 encePairwiseOnDemand]: 72/76 looper letters, 72 selfloop transitions, 2 changer transitions 7/81 dead transitions. [2023-11-17 11:55:50,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 81 transitions, 440 flow [2023-11-17 11:55:50,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:55:50,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:55:50,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2023-11-17 11:55:50,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27631578947368424 [2023-11-17 11:55:50,789 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 105 transitions. [2023-11-17 11:55:50,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 105 transitions. [2023-11-17 11:55:50,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:55:50,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 105 transitions. [2023-11-17 11:55:50,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 11:55:50,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 11:55:50,792 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 11:55:50,792 INFO L175 Difference]: Start difference. First operand has 36 places, 43 transitions, 190 flow. Second operand 5 states and 105 transitions. [2023-11-17 11:55:50,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 81 transitions, 440 flow [2023-11-17 11:55:50,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 81 transitions, 416 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-17 11:55:50,795 INFO L231 Difference]: Finished difference. Result has 42 places, 44 transitions, 181 flow [2023-11-17 11:55:50,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=181, PETRI_PLACES=42, PETRI_TRANSITIONS=44} [2023-11-17 11:55:50,795 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2023-11-17 11:55:50,796 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 44 transitions, 181 flow [2023-11-17 11:55:50,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 11:55:50,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:55:50,796 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:55:50,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-17 11:55:51,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-17 11:55:51,003 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 11:55:51,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:55:51,003 INFO L85 PathProgramCache]: Analyzing trace with hash -570251181, now seen corresponding path program 3 times [2023-11-17 11:55:51,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:55:51,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344250977] [2023-11-17 11:55:51,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:55:51,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:55:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:55:51,231 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-17 11:55:51,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:55:51,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344250977] [2023-11-17 11:55:51,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344250977] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:55:51,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201181403] [2023-11-17 11:55:51,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 11:55:51,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:55:51,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:55:51,233 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:55:51,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 11:55:51,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-17 11:55:51,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:55:51,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-17 11:55:51,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:55:52,235 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 11:55:52,235 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 11:55:52,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201181403] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:55:52,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 11:55:52,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-11-17 11:55:52,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543015043] [2023-11-17 11:55:52,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:55:52,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:55:52,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:55:52,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:55:52,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-17 11:55:52,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:55:52,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 44 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 11:55:52,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:55:52,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:55:52,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:55:52,866 INFO L124 PetriNetUnfolderBase]: 510/791 cut-off events. [2023-11-17 11:55:52,866 INFO L125 PetriNetUnfolderBase]: For 213/213 co-relation queries the response was YES. [2023-11-17 11:55:52,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1809 conditions, 791 events. 510/791 cut-off events. For 213/213 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2729 event pairs, 211 based on Foata normal form. 1/648 useless extension candidates. Maximal degree in co-relation 1777. Up to 537 conditions per place. [2023-11-17 11:55:52,870 INFO L140 encePairwiseOnDemand]: 72/76 looper letters, 68 selfloop transitions, 3 changer transitions 7/78 dead transitions. [2023-11-17 11:55:52,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 78 transitions, 427 flow [2023-11-17 11:55:52,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:55:52,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:55:52,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 101 transitions. [2023-11-17 11:55:52,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2657894736842105 [2023-11-17 11:55:52,872 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 101 transitions. [2023-11-17 11:55:52,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 101 transitions. [2023-11-17 11:55:52,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:55:52,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 101 transitions. [2023-11-17 11:55:52,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 11:55:52,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 11:55:52,874 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 11:55:52,874 INFO L175 Difference]: Start difference. First operand has 42 places, 44 transitions, 181 flow. Second operand 5 states and 101 transitions. [2023-11-17 11:55:52,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 78 transitions, 427 flow [2023-11-17 11:55:52,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 78 transitions, 418 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-17 11:55:52,877 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 198 flow [2023-11-17 11:55:52,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=39, 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=5, PETRI_FLOW=198, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2023-11-17 11:55:52,878 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 14 predicate places. [2023-11-17 11:55:52,878 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 198 flow [2023-11-17 11:55:52,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 11:55:52,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:55:52,879 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:55:52,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 11:55:53,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:55:53,086 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 11:55:53,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:55:53,087 INFO L85 PathProgramCache]: Analyzing trace with hash 803120415, now seen corresponding path program 4 times [2023-11-17 11:55:53,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:55:53,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527720902] [2023-11-17 11:55:53,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:55:53,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:55:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:55:53,288 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-17 11:55:53,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:55:53,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527720902] [2023-11-17 11:55:53,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527720902] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:55:53,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491844983] [2023-11-17 11:55:53,289 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 11:55:53,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:55:53,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:55:53,291 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:55:53,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 11:55:53,560 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 11:55:53,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:55:53,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 11:55:53,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:55:53,633 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-17 11:55:53,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:55:53,702 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-17 11:55:53,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491844983] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:55:53,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:55:53,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-11-17 11:55:53,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337012694] [2023-11-17 11:55:53,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:55:53,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 11:55:53,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:55:53,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 11:55:53,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-11-17 11:55:53,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:55:53,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 198 flow. Second operand has 17 states, 17 states have (on average 9.176470588235293) internal successors, (156), 17 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 11:55:53,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:55:53,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:55:53,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:55:54,042 INFO L124 PetriNetUnfolderBase]: 509/786 cut-off events. [2023-11-17 11:55:54,042 INFO L125 PetriNetUnfolderBase]: For 568/568 co-relation queries the response was YES. [2023-11-17 11:55:54,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1955 conditions, 786 events. 509/786 cut-off events. For 568/568 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2572 event pairs, 302 based on Foata normal form. 1/643 useless extension candidates. Maximal degree in co-relation 1921. Up to 772 conditions per place. [2023-11-17 11:55:54,049 INFO L140 encePairwiseOnDemand]: 69/76 looper letters, 30 selfloop transitions, 18 changer transitions 0/48 dead transitions. [2023-11-17 11:55:54,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 48 transitions, 312 flow [2023-11-17 11:55:54,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:55:54,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:55:54,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2023-11-17 11:55:54,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.18421052631578946 [2023-11-17 11:55:54,052 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 98 transitions. [2023-11-17 11:55:54,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 98 transitions. [2023-11-17 11:55:54,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:55:54,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 98 transitions. [2023-11-17 11:55:54,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 11:55:54,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 76.0) internal successors, (608), 8 states have internal predecessors, (608), 0 states have call successors, (0), 0 states 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 11:55:54,056 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 76.0) internal successors, (608), 8 states have internal predecessors, (608), 0 states have call successors, (0), 0 states 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 11:55:54,056 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 198 flow. Second operand 7 states and 98 transitions. [2023-11-17 11:55:54,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 48 transitions, 312 flow [2023-11-17 11:55:54,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 48 transitions, 306 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-17 11:55:54,062 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 260 flow [2023-11-17 11:55:54,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=260, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2023-11-17 11:55:54,064 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 18 predicate places. [2023-11-17 11:55:54,064 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 260 flow [2023-11-17 11:55:54,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.176470588235293) internal successors, (156), 17 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 11:55:54,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:55:54,065 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:55:54,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-17 11:55:54,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:55:54,272 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 11:55:54,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:55:54,272 INFO L85 PathProgramCache]: Analyzing trace with hash 370718770, now seen corresponding path program 5 times [2023-11-17 11:55:54,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:55:54,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508872179] [2023-11-17 11:55:54,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:55:54,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:55:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:55:55,725 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 11:55:55,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:55:55,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508872179] [2023-11-17 11:55:55,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508872179] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:55:55,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:55:55,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:55:55,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394627330] [2023-11-17 11:55:55,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:55:55,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:55:55,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:55:55,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:55:55,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:55:55,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:55:55,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 260 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 11:55:55,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:55:55,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:55:55,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:55:56,615 INFO L124 PetriNetUnfolderBase]: 1171/1741 cut-off events. [2023-11-17 11:55:56,615 INFO L125 PetriNetUnfolderBase]: For 649/649 co-relation queries the response was YES. [2023-11-17 11:55:56,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4014 conditions, 1741 events. 1171/1741 cut-off events. For 649/649 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 7188 event pairs, 210 based on Foata normal form. 1/1320 useless extension candidates. Maximal degree in co-relation 3901. Up to 811 conditions per place. [2023-11-17 11:55:56,624 INFO L140 encePairwiseOnDemand]: 65/76 looper letters, 94 selfloop transitions, 38 changer transitions 1/133 dead transitions. [2023-11-17 11:55:56,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 133 transitions, 764 flow [2023-11-17 11:55:56,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:55:56,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:55:56,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2023-11-17 11:55:56,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30639097744360905 [2023-11-17 11:55:56,626 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 163 transitions. [2023-11-17 11:55:56,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 163 transitions. [2023-11-17 11:55:56,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:55:56,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 163 transitions. [2023-11-17 11:55:56,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states 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 11:55:56,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 76.0) internal successors, (608), 8 states have internal predecessors, (608), 0 states have call successors, (0), 0 states 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 11:55:56,628 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 76.0) internal successors, (608), 8 states have internal predecessors, (608), 0 states have call successors, (0), 0 states 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 11:55:56,628 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 260 flow. Second operand 7 states and 163 transitions. [2023-11-17 11:55:56,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 133 transitions, 764 flow [2023-11-17 11:55:56,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 133 transitions, 728 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-11-17 11:55:56,632 INFO L231 Difference]: Finished difference. Result has 57 places, 87 transitions, 519 flow [2023-11-17 11:55:56,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=519, PETRI_PLACES=57, PETRI_TRANSITIONS=87} [2023-11-17 11:55:56,633 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 25 predicate places. [2023-11-17 11:55:56,633 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 87 transitions, 519 flow [2023-11-17 11:55:56,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 11:55:56,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:55:56,633 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:55:56,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 11:55:56,634 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 11:55:56,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:55:56,634 INFO L85 PathProgramCache]: Analyzing trace with hash 996577840, now seen corresponding path program 6 times [2023-11-17 11:55:56,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:55:56,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930399217] [2023-11-17 11:55:56,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:55:56,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:55:56,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:55:58,504 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 11:55:58,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:55:58,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930399217] [2023-11-17 11:55:58,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930399217] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:55:58,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:55:58,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:55:58,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115644910] [2023-11-17 11:55:58,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:55:58,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:55:58,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:55:58,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:55:58,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:55:58,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:55:58,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 87 transitions, 519 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 11:55:58,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:55:58,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:55:58,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:55:59,615 INFO L124 PetriNetUnfolderBase]: 1452/2133 cut-off events. [2023-11-17 11:55:59,616 INFO L125 PetriNetUnfolderBase]: For 2444/2444 co-relation queries the response was YES. [2023-11-17 11:55:59,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7107 conditions, 2133 events. 1452/2133 cut-off events. For 2444/2444 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 8922 event pairs, 334 based on Foata normal form. 1/1564 useless extension candidates. Maximal degree in co-relation 7007. Up to 1061 conditions per place. [2023-11-17 11:55:59,631 INFO L140 encePairwiseOnDemand]: 65/76 looper letters, 115 selfloop transitions, 43 changer transitions 2/160 dead transitions. [2023-11-17 11:55:59,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 160 transitions, 1171 flow [2023-11-17 11:55:59,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:55:59,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:55:59,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2023-11-17 11:55:59,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3026315789473684 [2023-11-17 11:55:59,633 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 115 transitions. [2023-11-17 11:55:59,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 115 transitions. [2023-11-17 11:55:59,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:55:59,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 115 transitions. [2023-11-17 11:55:59,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states 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 11:55:59,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 11:55:59,635 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 11:55:59,635 INFO L175 Difference]: Start difference. First operand has 57 places, 87 transitions, 519 flow. Second operand 5 states and 115 transitions. [2023-11-17 11:55:59,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 160 transitions, 1171 flow [2023-11-17 11:55:59,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 160 transitions, 1159 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-17 11:55:59,651 INFO L231 Difference]: Finished difference. Result has 65 places, 120 transitions, 919 flow [2023-11-17 11:55:59,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=919, PETRI_PLACES=65, PETRI_TRANSITIONS=120} [2023-11-17 11:55:59,652 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 33 predicate places. [2023-11-17 11:55:59,652 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 120 transitions, 919 flow [2023-11-17 11:55:59,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 11:55:59,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:55:59,652 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:55:59,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 11:55:59,652 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 11:55:59,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:55:59,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1881745732, now seen corresponding path program 7 times [2023-11-17 11:55:59,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:55:59,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232791338] [2023-11-17 11:55:59,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:55:59,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:55:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:00,816 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 11:56:00,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:00,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232791338] [2023-11-17 11:56:00,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232791338] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:00,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:00,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:56:00,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730196592] [2023-11-17 11:56:00,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:00,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:56:00,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:00,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:56:00,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:56:00,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:56:00,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 120 transitions, 919 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 11:56:00,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:00,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:56:00,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:01,783 INFO L124 PetriNetUnfolderBase]: 1558/2307 cut-off events. [2023-11-17 11:56:01,783 INFO L125 PetriNetUnfolderBase]: For 4709/4709 co-relation queries the response was YES. [2023-11-17 11:56:01,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9173 conditions, 2307 events. 1558/2307 cut-off events. For 4709/4709 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 10044 event pairs, 364 based on Foata normal form. 1/1738 useless extension candidates. Maximal degree in co-relation 9069. Up to 1281 conditions per place. [2023-11-17 11:56:01,805 INFO L140 encePairwiseOnDemand]: 66/76 looper letters, 153 selfloop transitions, 40 changer transitions 2/195 dead transitions. [2023-11-17 11:56:01,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 195 transitions, 1746 flow [2023-11-17 11:56:01,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:56:01,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:56:01,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2023-11-17 11:56:01,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3131578947368421 [2023-11-17 11:56:01,806 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 119 transitions. [2023-11-17 11:56:01,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 119 transitions. [2023-11-17 11:56:01,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:01,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 119 transitions. [2023-11-17 11:56:01,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 11:56:01,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 11:56:01,808 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 11:56:01,808 INFO L175 Difference]: Start difference. First operand has 65 places, 120 transitions, 919 flow. Second operand 5 states and 119 transitions. [2023-11-17 11:56:01,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 195 transitions, 1746 flow [2023-11-17 11:56:01,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 195 transitions, 1734 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-17 11:56:01,835 INFO L231 Difference]: Finished difference. Result has 72 places, 144 transitions, 1302 flow [2023-11-17 11:56:01,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1302, PETRI_PLACES=72, PETRI_TRANSITIONS=144} [2023-11-17 11:56:01,836 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 40 predicate places. [2023-11-17 11:56:01,837 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 144 transitions, 1302 flow [2023-11-17 11:56:01,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 11:56:01,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:01,837 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:56:01,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 11:56:01,837 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 11:56:01,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:01,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1348219582, now seen corresponding path program 8 times [2023-11-17 11:56:01,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:01,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276484505] [2023-11-17 11:56:01,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:01,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:01,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:02,912 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 11:56:02,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:02,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276484505] [2023-11-17 11:56:02,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276484505] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:02,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:02,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:56:02,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778818691] [2023-11-17 11:56:02,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:02,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:56:02,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:02,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:56:02,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:56:02,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:56:02,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 144 transitions, 1302 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 11:56:02,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:02,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:56:02,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:03,914 INFO L124 PetriNetUnfolderBase]: 1594/2361 cut-off events. [2023-11-17 11:56:03,914 INFO L125 PetriNetUnfolderBase]: For 7432/7432 co-relation queries the response was YES. [2023-11-17 11:56:03,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10533 conditions, 2361 events. 1594/2361 cut-off events. For 7432/7432 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 10273 event pairs, 267 based on Foata normal form. 1/1770 useless extension candidates. Maximal degree in co-relation 10425. Up to 1258 conditions per place. [2023-11-17 11:56:03,933 INFO L140 encePairwiseOnDemand]: 65/76 looper letters, 135 selfloop transitions, 48 changer transitions 2/185 dead transitions. [2023-11-17 11:56:03,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 185 transitions, 1905 flow [2023-11-17 11:56:03,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:56:03,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:56:03,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2023-11-17 11:56:03,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29736842105263156 [2023-11-17 11:56:03,935 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 113 transitions. [2023-11-17 11:56:03,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 113 transitions. [2023-11-17 11:56:03,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:03,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 113 transitions. [2023-11-17 11:56:03,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 11:56:03,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 11:56:03,937 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 11:56:03,937 INFO L175 Difference]: Start difference. First operand has 72 places, 144 transitions, 1302 flow. Second operand 5 states and 113 transitions. [2023-11-17 11:56:03,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 185 transitions, 1905 flow [2023-11-17 11:56:03,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 185 transitions, 1897 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-11-17 11:56:03,967 INFO L231 Difference]: Finished difference. Result has 78 places, 153 transitions, 1540 flow [2023-11-17 11:56:03,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1540, PETRI_PLACES=78, PETRI_TRANSITIONS=153} [2023-11-17 11:56:03,969 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 46 predicate places. [2023-11-17 11:56:03,969 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 153 transitions, 1540 flow [2023-11-17 11:56:03,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 11:56:03,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:03,970 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:56:03,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 11:56:03,970 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 11:56:03,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:03,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1915116158, now seen corresponding path program 1 times [2023-11-17 11:56:03,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:03,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945476791] [2023-11-17 11:56:03,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:03,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:03,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:04,086 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 11:56:04,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:04,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945476791] [2023-11-17 11:56:04,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945476791] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:04,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:04,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:56:04,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420192739] [2023-11-17 11:56:04,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:04,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:56:04,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:04,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:56:04,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:56:04,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:56:04,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 153 transitions, 1540 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 11:56:04,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:04,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:56:04,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:04,974 INFO L124 PetriNetUnfolderBase]: 1681/2492 cut-off events. [2023-11-17 11:56:04,974 INFO L125 PetriNetUnfolderBase]: For 8680/8680 co-relation queries the response was YES. [2023-11-17 11:56:04,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12034 conditions, 2492 events. 1681/2492 cut-off events. For 8680/8680 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 10971 event pairs, 298 based on Foata normal form. 3/1853 useless extension candidates. Maximal degree in co-relation 11923. Up to 1686 conditions per place. [2023-11-17 11:56:05,002 INFO L140 encePairwiseOnDemand]: 72/76 looper letters, 141 selfloop transitions, 13 changer transitions 53/207 dead transitions. [2023-11-17 11:56:05,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 207 transitions, 2407 flow [2023-11-17 11:56:05,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:56:05,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:56:05,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2023-11-17 11:56:05,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3059210526315789 [2023-11-17 11:56:05,003 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 93 transitions. [2023-11-17 11:56:05,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 93 transitions. [2023-11-17 11:56:05,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:05,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 93 transitions. [2023-11-17 11:56:05,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 11:56:05,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 11:56:05,005 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 11:56:05,005 INFO L175 Difference]: Start difference. First operand has 78 places, 153 transitions, 1540 flow. Second operand 4 states and 93 transitions. [2023-11-17 11:56:05,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 207 transitions, 2407 flow [2023-11-17 11:56:05,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 207 transitions, 2318 flow, removed 18 selfloop flow, removed 1 redundant places. [2023-11-17 11:56:05,053 INFO L231 Difference]: Finished difference. Result has 83 places, 135 transitions, 1359 flow [2023-11-17 11:56:05,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=1479, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1359, PETRI_PLACES=83, PETRI_TRANSITIONS=135} [2023-11-17 11:56:05,054 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 51 predicate places. [2023-11-17 11:56:05,054 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 135 transitions, 1359 flow [2023-11-17 11:56:05,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 11:56:05,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:05,055 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:56:05,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 11:56:05,055 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 11:56:05,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:05,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1104231777, now seen corresponding path program 1 times [2023-11-17 11:56:05,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:05,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914369634] [2023-11-17 11:56:05,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:05,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:05,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:05,235 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 11:56:05,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:05,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914369634] [2023-11-17 11:56:05,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914369634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:05,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:05,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:56:05,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225049557] [2023-11-17 11:56:05,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:05,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:56:05,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:05,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:56:05,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:56:05,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:56:05,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 135 transitions, 1359 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 11:56:05,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:05,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:56:05,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:06,456 INFO L124 PetriNetUnfolderBase]: 2080/3102 cut-off events. [2023-11-17 11:56:06,456 INFO L125 PetriNetUnfolderBase]: For 8094/8094 co-relation queries the response was YES. [2023-11-17 11:56:06,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13628 conditions, 3102 events. 2080/3102 cut-off events. For 8094/8094 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 14601 event pairs, 156 based on Foata normal form. 4/2244 useless extension candidates. Maximal degree in co-relation 13515. Up to 1065 conditions per place. [2023-11-17 11:56:06,481 INFO L140 encePairwiseOnDemand]: 68/76 looper letters, 186 selfloop transitions, 33 changer transitions 36/255 dead transitions. [2023-11-17 11:56:06,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 255 transitions, 2816 flow [2023-11-17 11:56:06,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:56:06,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:56:06,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2023-11-17 11:56:06,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29605263157894735 [2023-11-17 11:56:06,483 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 135 transitions. [2023-11-17 11:56:06,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 135 transitions. [2023-11-17 11:56:06,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:06,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 135 transitions. [2023-11-17 11:56:06,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 11:56:06,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 76.0) internal successors, (532), 7 states have internal predecessors, (532), 0 states have call successors, (0), 0 states 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 11:56:06,485 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 76.0) internal successors, (532), 7 states have internal predecessors, (532), 0 states have call successors, (0), 0 states 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 11:56:06,485 INFO L175 Difference]: Start difference. First operand has 83 places, 135 transitions, 1359 flow. Second operand 6 states and 135 transitions. [2023-11-17 11:56:06,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 255 transitions, 2816 flow [2023-11-17 11:56:06,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 255 transitions, 2739 flow, removed 13 selfloop flow, removed 3 redundant places. [2023-11-17 11:56:06,543 INFO L231 Difference]: Finished difference. Result has 86 places, 141 transitions, 1398 flow [2023-11-17 11:56:06,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=1321, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1398, PETRI_PLACES=86, PETRI_TRANSITIONS=141} [2023-11-17 11:56:06,544 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 54 predicate places. [2023-11-17 11:56:06,544 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 141 transitions, 1398 flow [2023-11-17 11:56:06,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 11:56:06,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:06,544 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:56:06,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 11:56:06,545 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 11:56:06,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:06,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1656537597, now seen corresponding path program 1 times [2023-11-17 11:56:06,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:06,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183679147] [2023-11-17 11:56:06,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:06,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:06,678 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 11:56:06,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:06,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183679147] [2023-11-17 11:56:06,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183679147] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:06,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:06,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:56:06,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392241891] [2023-11-17 11:56:06,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:06,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:56:06,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:06,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:56:06,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:56:06,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:56:06,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 141 transitions, 1398 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 11:56:06,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:06,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:56:06,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:07,633 INFO L124 PetriNetUnfolderBase]: 2019/2996 cut-off events. [2023-11-17 11:56:07,634 INFO L125 PetriNetUnfolderBase]: For 9979/9979 co-relation queries the response was YES. [2023-11-17 11:56:07,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13591 conditions, 2996 events. 2019/2996 cut-off events. For 9979/9979 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 13481 event pairs, 531 based on Foata normal form. 0/2228 useless extension candidates. Maximal degree in co-relation 13477. Up to 2630 conditions per place. [2023-11-17 11:56:07,660 INFO L140 encePairwiseOnDemand]: 73/76 looper letters, 162 selfloop transitions, 21 changer transitions 0/183 dead transitions. [2023-11-17 11:56:07,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 183 transitions, 2088 flow [2023-11-17 11:56:07,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:56:07,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:56:07,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2023-11-17 11:56:07,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29385964912280704 [2023-11-17 11:56:07,662 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 67 transitions. [2023-11-17 11:56:07,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 67 transitions. [2023-11-17 11:56:07,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:07,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 67 transitions. [2023-11-17 11:56:07,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 11:56:07,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states 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 11:56:07,663 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states 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 11:56:07,663 INFO L175 Difference]: Start difference. First operand has 86 places, 141 transitions, 1398 flow. Second operand 3 states and 67 transitions. [2023-11-17 11:56:07,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 183 transitions, 2088 flow [2023-11-17 11:56:07,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 183 transitions, 2071 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-17 11:56:07,707 INFO L231 Difference]: Finished difference. Result has 85 places, 144 transitions, 1473 flow [2023-11-17 11:56:07,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=1376, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1473, PETRI_PLACES=85, PETRI_TRANSITIONS=144} [2023-11-17 11:56:07,708 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 53 predicate places. [2023-11-17 11:56:07,708 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 144 transitions, 1473 flow [2023-11-17 11:56:07,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 11:56:07,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:07,708 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:56:07,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-17 11:56:07,708 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 11:56:07,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:07,709 INFO L85 PathProgramCache]: Analyzing trace with hash 2091778981, now seen corresponding path program 2 times [2023-11-17 11:56:07,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:07,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170501286] [2023-11-17 11:56:07,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:07,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:07,919 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 11:56:07,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:07,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170501286] [2023-11-17 11:56:07,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170501286] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:07,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:07,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:56:07,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139915659] [2023-11-17 11:56:07,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:07,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:56:07,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:07,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:56:07,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:56:07,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:56:07,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 144 transitions, 1473 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 11:56:07,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:07,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:56:07,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:09,079 INFO L124 PetriNetUnfolderBase]: 2128/3197 cut-off events. [2023-11-17 11:56:09,080 INFO L125 PetriNetUnfolderBase]: For 9957/9957 co-relation queries the response was YES. [2023-11-17 11:56:09,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14931 conditions, 3197 events. 2128/3197 cut-off events. For 9957/9957 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 15170 event pairs, 227 based on Foata normal form. 4/2385 useless extension candidates. Maximal degree in co-relation 14818. Up to 1340 conditions per place. [2023-11-17 11:56:09,105 INFO L140 encePairwiseOnDemand]: 67/76 looper letters, 174 selfloop transitions, 50 changer transitions 36/260 dead transitions. [2023-11-17 11:56:09,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 260 transitions, 2805 flow [2023-11-17 11:56:09,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:56:09,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:56:09,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2023-11-17 11:56:09,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3201754385964912 [2023-11-17 11:56:09,107 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 146 transitions. [2023-11-17 11:56:09,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 146 transitions. [2023-11-17 11:56:09,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:09,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 146 transitions. [2023-11-17 11:56:09,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 24.333333333333332) internal successors, (146), 6 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 11:56:09,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 76.0) internal successors, (532), 7 states have internal predecessors, (532), 0 states have call successors, (0), 0 states 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 11:56:09,109 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 76.0) internal successors, (532), 7 states have internal predecessors, (532), 0 states have call successors, (0), 0 states 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 11:56:09,109 INFO L175 Difference]: Start difference. First operand has 85 places, 144 transitions, 1473 flow. Second operand 6 states and 146 transitions. [2023-11-17 11:56:09,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 260 transitions, 2805 flow [2023-11-17 11:56:09,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 260 transitions, 2762 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-11-17 11:56:09,152 INFO L231 Difference]: Finished difference. Result has 94 places, 147 transitions, 1594 flow [2023-11-17 11:56:09,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=1444, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1594, PETRI_PLACES=94, PETRI_TRANSITIONS=147} [2023-11-17 11:56:09,153 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 62 predicate places. [2023-11-17 11:56:09,153 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 147 transitions, 1594 flow [2023-11-17 11:56:09,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 11:56:09,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:09,154 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:56:09,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-17 11:56:09,154 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 11:56:09,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:09,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1565050130, now seen corresponding path program 2 times [2023-11-17 11:56:09,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:09,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599496100] [2023-11-17 11:56:09,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:09,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:09,287 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 11:56:09,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:09,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599496100] [2023-11-17 11:56:09,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599496100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:09,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:09,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:56:09,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670366217] [2023-11-17 11:56:09,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:09,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:56:09,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:09,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:56:09,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:56:09,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:56:09,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 147 transitions, 1594 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 11:56:09,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:09,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:56:09,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:09,993 INFO L124 PetriNetUnfolderBase]: 1836/2755 cut-off events. [2023-11-17 11:56:09,993 INFO L125 PetriNetUnfolderBase]: For 11437/11437 co-relation queries the response was YES. [2023-11-17 11:56:10,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13559 conditions, 2755 events. 1836/2755 cut-off events. For 11437/11437 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 12367 event pairs, 530 based on Foata normal form. 2/2055 useless extension candidates. Maximal degree in co-relation 13524. Up to 2595 conditions per place. [2023-11-17 11:56:10,013 INFO L140 encePairwiseOnDemand]: 73/76 looper letters, 133 selfloop transitions, 0 changer transitions 35/168 dead transitions. [2023-11-17 11:56:10,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 168 transitions, 2007 flow [2023-11-17 11:56:10,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:56:10,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:56:10,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 80 transitions. [2023-11-17 11:56:10,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2631578947368421 [2023-11-17 11:56:10,014 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 80 transitions. [2023-11-17 11:56:10,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 80 transitions. [2023-11-17 11:56:10,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:10,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 80 transitions. [2023-11-17 11:56:10,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 11:56:10,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 11:56:10,015 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 11:56:10,016 INFO L175 Difference]: Start difference. First operand has 94 places, 147 transitions, 1594 flow. Second operand 4 states and 80 transitions. [2023-11-17 11:56:10,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 168 transitions, 2007 flow [2023-11-17 11:56:10,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 168 transitions, 1908 flow, removed 28 selfloop flow, removed 5 redundant places. [2023-11-17 11:56:10,070 INFO L231 Difference]: Finished difference. Result has 90 places, 133 transitions, 1294 flow [2023-11-17 11:56:10,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=1497, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1294, PETRI_PLACES=90, PETRI_TRANSITIONS=133} [2023-11-17 11:56:10,070 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 58 predicate places. [2023-11-17 11:56:10,070 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 133 transitions, 1294 flow [2023-11-17 11:56:10,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 11:56:10,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:10,071 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:56:10,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-17 11:56:10,071 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 11:56:10,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:10,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1926798993, now seen corresponding path program 1 times [2023-11-17 11:56:10,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:10,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208814763] [2023-11-17 11:56:10,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:10,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:10,490 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:56:10,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:10,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208814763] [2023-11-17 11:56:10,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208814763] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:10,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:10,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:56:10,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156652830] [2023-11-17 11:56:10,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:10,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:56:10,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:10,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:56:10,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:56:10,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:56:10,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 133 transitions, 1294 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 11:56:10,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:10,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:56:10,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:11,423 INFO L124 PetriNetUnfolderBase]: 1815/2744 cut-off events. [2023-11-17 11:56:11,424 INFO L125 PetriNetUnfolderBase]: For 8659/8659 co-relation queries the response was YES. [2023-11-17 11:56:11,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12741 conditions, 2744 events. 1815/2744 cut-off events. For 8659/8659 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 12517 event pairs, 212 based on Foata normal form. 2/2032 useless extension candidates. Maximal degree in co-relation 12708. Up to 2217 conditions per place. [2023-11-17 11:56:11,441 INFO L140 encePairwiseOnDemand]: 72/76 looper letters, 160 selfloop transitions, 20 changer transitions 13/193 dead transitions. [2023-11-17 11:56:11,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 193 transitions, 2035 flow [2023-11-17 11:56:11,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:56:11,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:56:11,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2023-11-17 11:56:11,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26842105263157895 [2023-11-17 11:56:11,443 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 102 transitions. [2023-11-17 11:56:11,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 102 transitions. [2023-11-17 11:56:11,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:11,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 102 transitions. [2023-11-17 11:56:11,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 11:56:11,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 11:56:11,444 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 11:56:11,444 INFO L175 Difference]: Start difference. First operand has 90 places, 133 transitions, 1294 flow. Second operand 5 states and 102 transitions. [2023-11-17 11:56:11,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 193 transitions, 2035 flow [2023-11-17 11:56:11,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 193 transitions, 1881 flow, removed 32 selfloop flow, removed 7 redundant places. [2023-11-17 11:56:11,480 INFO L231 Difference]: Finished difference. Result has 81 places, 132 transitions, 1225 flow [2023-11-17 11:56:11,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=1187, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1225, PETRI_PLACES=81, PETRI_TRANSITIONS=132} [2023-11-17 11:56:11,481 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 49 predicate places. [2023-11-17 11:56:11,481 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 132 transitions, 1225 flow [2023-11-17 11:56:11,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 11:56:11,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:11,482 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:56:11,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-17 11:56:11,482 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 11:56:11,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:11,482 INFO L85 PathProgramCache]: Analyzing trace with hash -390124425, now seen corresponding path program 2 times [2023-11-17 11:56:11,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:11,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340353512] [2023-11-17 11:56:11,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:11,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:11,839 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:56:11,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:11,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340353512] [2023-11-17 11:56:11,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340353512] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:11,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:11,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:56:11,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292577132] [2023-11-17 11:56:11,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:11,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:56:11,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:11,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:56:11,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:56:11,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:56:11,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 132 transitions, 1225 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 11:56:11,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:11,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:56:11,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:12,740 INFO L124 PetriNetUnfolderBase]: 1874/2843 cut-off events. [2023-11-17 11:56:12,740 INFO L125 PetriNetUnfolderBase]: For 7955/7955 co-relation queries the response was YES. [2023-11-17 11:56:12,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11925 conditions, 2843 events. 1874/2843 cut-off events. For 7955/7955 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 13190 event pairs, 256 based on Foata normal form. 2/2093 useless extension candidates. Maximal degree in co-relation 11895. Up to 2145 conditions per place. [2023-11-17 11:56:12,757 INFO L140 encePairwiseOnDemand]: 72/76 looper letters, 153 selfloop transitions, 22 changer transitions 12/187 dead transitions. [2023-11-17 11:56:12,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 187 transitions, 1897 flow [2023-11-17 11:56:12,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:56:12,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:56:12,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 100 transitions. [2023-11-17 11:56:12,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2631578947368421 [2023-11-17 11:56:12,759 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 100 transitions. [2023-11-17 11:56:12,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 100 transitions. [2023-11-17 11:56:12,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:12,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 100 transitions. [2023-11-17 11:56:12,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 11:56:12,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 11:56:12,760 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 11:56:12,760 INFO L175 Difference]: Start difference. First operand has 81 places, 132 transitions, 1225 flow. Second operand 5 states and 100 transitions. [2023-11-17 11:56:12,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 187 transitions, 1897 flow [2023-11-17 11:56:12,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 187 transitions, 1877 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-17 11:56:12,788 INFO L231 Difference]: Finished difference. Result has 83 places, 131 transitions, 1241 flow [2023-11-17 11:56:12,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=1207, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1241, PETRI_PLACES=83, PETRI_TRANSITIONS=131} [2023-11-17 11:56:12,789 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 51 predicate places. [2023-11-17 11:56:12,789 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 131 transitions, 1241 flow [2023-11-17 11:56:12,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 11:56:12,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:12,789 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:56:12,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-17 11:56:12,789 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 11:56:12,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:12,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1296275147, now seen corresponding path program 3 times [2023-11-17 11:56:12,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:12,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105330775] [2023-11-17 11:56:12,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:12,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:12,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:13,160 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:56:13,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:13,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105330775] [2023-11-17 11:56:13,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105330775] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:13,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:13,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:56:13,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460146894] [2023-11-17 11:56:13,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:13,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:56:13,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:13,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:56:13,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:56:13,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:56:13,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 131 transitions, 1241 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 11:56:13,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:13,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:56:13,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:14,093 INFO L124 PetriNetUnfolderBase]: 1855/2802 cut-off events. [2023-11-17 11:56:14,093 INFO L125 PetriNetUnfolderBase]: For 8627/8627 co-relation queries the response was YES. [2023-11-17 11:56:14,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11893 conditions, 2802 events. 1855/2802 cut-off events. For 8627/8627 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 12878 event pairs, 451 based on Foata normal form. 2/2056 useless extension candidates. Maximal degree in co-relation 11863. Up to 2304 conditions per place. [2023-11-17 11:56:14,113 INFO L140 encePairwiseOnDemand]: 72/76 looper letters, 161 selfloop transitions, 10 changer transitions 13/184 dead transitions. [2023-11-17 11:56:14,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 184 transitions, 1868 flow [2023-11-17 11:56:14,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:56:14,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:56:14,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2023-11-17 11:56:14,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27631578947368424 [2023-11-17 11:56:14,115 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 105 transitions. [2023-11-17 11:56:14,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 105 transitions. [2023-11-17 11:56:14,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:14,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 105 transitions. [2023-11-17 11:56:14,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 11:56:14,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 11:56:14,116 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 11:56:14,116 INFO L175 Difference]: Start difference. First operand has 83 places, 131 transitions, 1241 flow. Second operand 5 states and 105 transitions. [2023-11-17 11:56:14,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 184 transitions, 1868 flow [2023-11-17 11:56:14,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 184 transitions, 1846 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-17 11:56:14,143 INFO L231 Difference]: Finished difference. Result has 85 places, 129 transitions, 1215 flow [2023-11-17 11:56:14,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=1223, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1215, PETRI_PLACES=85, PETRI_TRANSITIONS=129} [2023-11-17 11:56:14,143 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 53 predicate places. [2023-11-17 11:56:14,143 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 129 transitions, 1215 flow [2023-11-17 11:56:14,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 11:56:14,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:14,144 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:56:14,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-17 11:56:14,144 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 11:56:14,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:14,144 INFO L85 PathProgramCache]: Analyzing trace with hash -586433573, now seen corresponding path program 4 times [2023-11-17 11:56:14,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:14,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468162726] [2023-11-17 11:56:14,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:14,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:14,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:14,690 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:56:14,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:14,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468162726] [2023-11-17 11:56:14,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468162726] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:14,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:14,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:56:14,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418555435] [2023-11-17 11:56:14,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:14,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:56:14,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:14,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:56:14,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:56:14,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:56:14,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 129 transitions, 1215 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 11:56:14,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:14,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:56:14,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:15,570 INFO L124 PetriNetUnfolderBase]: 1840/2766 cut-off events. [2023-11-17 11:56:15,571 INFO L125 PetriNetUnfolderBase]: For 8506/8506 co-relation queries the response was YES. [2023-11-17 11:56:15,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11812 conditions, 2766 events. 1840/2766 cut-off events. For 8506/8506 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 12543 event pairs, 451 based on Foata normal form. 1/2023 useless extension candidates. Maximal degree in co-relation 11782. Up to 2304 conditions per place. [2023-11-17 11:56:15,587 INFO L140 encePairwiseOnDemand]: 72/76 looper letters, 145 selfloop transitions, 5 changer transitions 12/162 dead transitions. [2023-11-17 11:56:15,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 162 transitions, 1701 flow [2023-11-17 11:56:15,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:56:15,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:56:15,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2023-11-17 11:56:15,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24210526315789474 [2023-11-17 11:56:15,594 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 92 transitions. [2023-11-17 11:56:15,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 92 transitions. [2023-11-17 11:56:15,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:15,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 92 transitions. [2023-11-17 11:56:15,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 11:56:15,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 11:56:15,595 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 11:56:15,595 INFO L175 Difference]: Start difference. First operand has 85 places, 129 transitions, 1215 flow. Second operand 5 states and 92 transitions. [2023-11-17 11:56:15,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 162 transitions, 1701 flow [2023-11-17 11:56:15,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 162 transitions, 1679 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-11-17 11:56:15,625 INFO L231 Difference]: Finished difference. Result has 86 places, 127 transitions, 1176 flow [2023-11-17 11:56:15,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=1195, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1176, PETRI_PLACES=86, PETRI_TRANSITIONS=127} [2023-11-17 11:56:15,625 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 54 predicate places. [2023-11-17 11:56:15,625 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 127 transitions, 1176 flow [2023-11-17 11:56:15,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 11:56:15,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:15,626 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:56:15,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-17 11:56:15,626 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 11:56:15,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:15,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1922827963, now seen corresponding path program 5 times [2023-11-17 11:56:15,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:15,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845417028] [2023-11-17 11:56:15,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:15,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:16,000 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:56:16,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:16,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845417028] [2023-11-17 11:56:16,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845417028] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:16,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:16,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:56:16,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793409456] [2023-11-17 11:56:16,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:16,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:56:16,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:16,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:56:16,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:56:16,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:56:16,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 127 transitions, 1176 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 11:56:16,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:16,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:56:16,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:16,927 INFO L124 PetriNetUnfolderBase]: 1834/2746 cut-off events. [2023-11-17 11:56:16,927 INFO L125 PetriNetUnfolderBase]: For 8049/8049 co-relation queries the response was YES. [2023-11-17 11:56:16,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11778 conditions, 2746 events. 1834/2746 cut-off events. For 8049/8049 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 12237 event pairs, 470 based on Foata normal form. 1/2005 useless extension candidates. Maximal degree in co-relation 11749. Up to 2117 conditions per place. [2023-11-17 11:56:16,940 INFO L140 encePairwiseOnDemand]: 72/76 looper letters, 152 selfloop transitions, 12 changer transitions 10/174 dead transitions. [2023-11-17 11:56:16,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 174 transitions, 1820 flow [2023-11-17 11:56:16,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:56:16,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:56:16,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 101 transitions. [2023-11-17 11:56:16,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2657894736842105 [2023-11-17 11:56:16,942 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 101 transitions. [2023-11-17 11:56:16,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 101 transitions. [2023-11-17 11:56:16,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:16,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 101 transitions. [2023-11-17 11:56:16,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 11:56:16,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 11:56:16,943 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 11:56:16,944 INFO L175 Difference]: Start difference. First operand has 86 places, 127 transitions, 1176 flow. Second operand 5 states and 101 transitions. [2023-11-17 11:56:16,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 174 transitions, 1820 flow [2023-11-17 11:56:16,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 174 transitions, 1808 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-17 11:56:16,969 INFO L231 Difference]: Finished difference. Result has 88 places, 129 transitions, 1244 flow [2023-11-17 11:56:16,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1244, PETRI_PLACES=88, PETRI_TRANSITIONS=129} [2023-11-17 11:56:16,970 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 56 predicate places. [2023-11-17 11:56:16,970 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 129 transitions, 1244 flow [2023-11-17 11:56:16,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 11:56:16,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:16,970 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:56:16,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-17 11:56:16,970 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 11:56:16,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:16,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1014004281, now seen corresponding path program 6 times [2023-11-17 11:56:16,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:16,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883000326] [2023-11-17 11:56:16,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:16,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:17,336 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:56:17,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:17,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883000326] [2023-11-17 11:56:17,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883000326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:17,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:17,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:56:17,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641994395] [2023-11-17 11:56:17,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:17,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:56:17,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:17,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:56:17,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:56:17,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:56:17,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 129 transitions, 1244 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 11:56:17,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:17,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:56:17,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:18,340 INFO L124 PetriNetUnfolderBase]: 1823/2723 cut-off events. [2023-11-17 11:56:18,340 INFO L125 PetriNetUnfolderBase]: For 8654/8654 co-relation queries the response was YES. [2023-11-17 11:56:18,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11795 conditions, 2723 events. 1823/2723 cut-off events. For 8654/8654 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 12047 event pairs, 470 based on Foata normal form. 1/1984 useless extension candidates. Maximal degree in co-relation 11764. Up to 2117 conditions per place. [2023-11-17 11:56:18,354 INFO L140 encePairwiseOnDemand]: 72/76 looper letters, 138 selfloop transitions, 7 changer transitions 12/157 dead transitions. [2023-11-17 11:56:18,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 157 transitions, 1716 flow [2023-11-17 11:56:18,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:56:18,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:56:18,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 90 transitions. [2023-11-17 11:56:18,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.23684210526315788 [2023-11-17 11:56:18,356 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 90 transitions. [2023-11-17 11:56:18,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 90 transitions. [2023-11-17 11:56:18,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:18,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 90 transitions. [2023-11-17 11:56:18,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 11:56:18,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 11:56:18,357 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 11:56:18,357 INFO L175 Difference]: Start difference. First operand has 88 places, 129 transitions, 1244 flow. Second operand 5 states and 90 transitions. [2023-11-17 11:56:18,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 157 transitions, 1716 flow [2023-11-17 11:56:18,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 157 transitions, 1705 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-17 11:56:18,382 INFO L231 Difference]: Finished difference. Result has 90 places, 127 transitions, 1218 flow [2023-11-17 11:56:18,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=1235, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1218, PETRI_PLACES=90, PETRI_TRANSITIONS=127} [2023-11-17 11:56:18,382 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 58 predicate places. [2023-11-17 11:56:18,383 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 127 transitions, 1218 flow [2023-11-17 11:56:18,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 11:56:18,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:18,383 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 11:56:18,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-17 11:56:18,383 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 11:56:18,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:18,383 INFO L85 PathProgramCache]: Analyzing trace with hash 2138705016, now seen corresponding path program 1 times [2023-11-17 11:56:18,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:18,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643720311] [2023-11-17 11:56:18,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:18,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:18,485 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:56:18,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:18,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643720311] [2023-11-17 11:56:18,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643720311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:18,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:18,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:56:18,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150617396] [2023-11-17 11:56:18,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:18,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:56:18,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:18,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:56:18,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:56:18,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:56:18,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 127 transitions, 1218 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 11:56:18,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:18,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:56:18,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:19,381 INFO L124 PetriNetUnfolderBase]: 1796/2677 cut-off events. [2023-11-17 11:56:19,382 INFO L125 PetriNetUnfolderBase]: For 7933/7933 co-relation queries the response was YES. [2023-11-17 11:56:19,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11677 conditions, 2677 events. 1796/2677 cut-off events. For 7933/7933 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 11896 event pairs, 198 based on Foata normal form. 10/1953 useless extension candidates. Maximal degree in co-relation 11646. Up to 2417 conditions per place. [2023-11-17 11:56:19,397 INFO L140 encePairwiseOnDemand]: 72/76 looper letters, 133 selfloop transitions, 14 changer transitions 5/152 dead transitions. [2023-11-17 11:56:19,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 152 transitions, 1615 flow [2023-11-17 11:56:19,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:56:19,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:56:19,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2023-11-17 11:56:19,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27631578947368424 [2023-11-17 11:56:19,399 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 84 transitions. [2023-11-17 11:56:19,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 84 transitions. [2023-11-17 11:56:19,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:19,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 84 transitions. [2023-11-17 11:56:19,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 11:56:19,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 11:56:19,400 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 11:56:19,400 INFO L175 Difference]: Start difference. First operand has 90 places, 127 transitions, 1218 flow. Second operand 4 states and 84 transitions. [2023-11-17 11:56:19,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 152 transitions, 1615 flow [2023-11-17 11:56:19,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 152 transitions, 1604 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-17 11:56:19,425 INFO L231 Difference]: Finished difference. Result has 89 places, 125 transitions, 1227 flow [2023-11-17 11:56:19,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=1194, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1227, PETRI_PLACES=89, PETRI_TRANSITIONS=125} [2023-11-17 11:56:19,425 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 57 predicate places. [2023-11-17 11:56:19,425 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 125 transitions, 1227 flow [2023-11-17 11:56:19,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 11:56:19,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:19,426 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 11:56:19,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-17 11:56:19,426 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:56:19,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:19,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1771417200, now seen corresponding path program 2 times [2023-11-17 11:56:19,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:19,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093885540] [2023-11-17 11:56:19,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:19,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:19,553 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:56:19,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:19,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093885540] [2023-11-17 11:56:19,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093885540] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:19,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:19,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:56:19,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456601113] [2023-11-17 11:56:19,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:19,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:56:19,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:19,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:56:19,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:56:19,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:56:19,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 125 transitions, 1227 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 11:56:19,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:19,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:56:19,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:20,435 INFO L124 PetriNetUnfolderBase]: 1865/2784 cut-off events. [2023-11-17 11:56:20,436 INFO L125 PetriNetUnfolderBase]: For 9064/9064 co-relation queries the response was YES. [2023-11-17 11:56:20,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12136 conditions, 2784 events. 1865/2784 cut-off events. For 9064/9064 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 12579 event pairs, 192 based on Foata normal form. 24/2038 useless extension candidates. Maximal degree in co-relation 12105. Up to 2253 conditions per place. [2023-11-17 11:56:20,448 INFO L140 encePairwiseOnDemand]: 72/76 looper letters, 136 selfloop transitions, 21 changer transitions 1/158 dead transitions. [2023-11-17 11:56:20,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 158 transitions, 1729 flow [2023-11-17 11:56:20,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:56:20,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:56:20,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2023-11-17 11:56:20,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28618421052631576 [2023-11-17 11:56:20,450 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 87 transitions. [2023-11-17 11:56:20,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 87 transitions. [2023-11-17 11:56:20,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:20,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 87 transitions. [2023-11-17 11:56:20,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 11:56:20,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 11:56:20,452 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 11:56:20,452 INFO L175 Difference]: Start difference. First operand has 89 places, 125 transitions, 1227 flow. Second operand 4 states and 87 transitions. [2023-11-17 11:56:20,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 158 transitions, 1729 flow [2023-11-17 11:56:20,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 158 transitions, 1704 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:56:20,480 INFO L231 Difference]: Finished difference. Result has 92 places, 126 transitions, 1297 flow [2023-11-17 11:56:20,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=1194, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1297, PETRI_PLACES=92, PETRI_TRANSITIONS=126} [2023-11-17 11:56:20,480 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 60 predicate places. [2023-11-17 11:56:20,481 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 126 transitions, 1297 flow [2023-11-17 11:56:20,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 11:56:20,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:20,481 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 11:56:20,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-17 11:56:20,481 INFO L420 AbstractCegarLoop]: === Iteration 23 === 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 11:56:20,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:20,481 INFO L85 PathProgramCache]: Analyzing trace with hash -774213581, now seen corresponding path program 1 times [2023-11-17 11:56:20,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:20,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567970815] [2023-11-17 11:56:20,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:20,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:20,589 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:56:20,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:20,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567970815] [2023-11-17 11:56:20,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567970815] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:20,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:20,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:56:20,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561629489] [2023-11-17 11:56:20,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:20,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:56:20,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:20,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:56:20,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:56:20,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:56:20,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 126 transitions, 1297 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 11:56:20,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:20,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:56:20,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:21,437 INFO L124 PetriNetUnfolderBase]: 1996/2997 cut-off events. [2023-11-17 11:56:21,437 INFO L125 PetriNetUnfolderBase]: For 10485/10485 co-relation queries the response was YES. [2023-11-17 11:56:21,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13118 conditions, 2997 events. 1996/2997 cut-off events. For 10485/10485 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 14001 event pairs, 229 based on Foata normal form. 46/2207 useless extension candidates. Maximal degree in co-relation 13085. Up to 2328 conditions per place. [2023-11-17 11:56:21,458 INFO L140 encePairwiseOnDemand]: 72/76 looper letters, 144 selfloop transitions, 21 changer transitions 1/166 dead transitions. [2023-11-17 11:56:21,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 166 transitions, 1880 flow [2023-11-17 11:56:21,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:56:21,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:56:21,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2023-11-17 11:56:21,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28618421052631576 [2023-11-17 11:56:21,459 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 87 transitions. [2023-11-17 11:56:21,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 87 transitions. [2023-11-17 11:56:21,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:21,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 87 transitions. [2023-11-17 11:56:21,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 11:56:21,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 11:56:21,460 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 11:56:21,460 INFO L175 Difference]: Start difference. First operand has 92 places, 126 transitions, 1297 flow. Second operand 4 states and 87 transitions. [2023-11-17 11:56:21,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 166 transitions, 1880 flow [2023-11-17 11:56:21,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 166 transitions, 1823 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-11-17 11:56:21,483 INFO L231 Difference]: Finished difference. Result has 95 places, 132 transitions, 1403 flow [2023-11-17 11:56:21,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=1247, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1403, PETRI_PLACES=95, PETRI_TRANSITIONS=132} [2023-11-17 11:56:21,484 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 63 predicate places. [2023-11-17 11:56:21,484 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 132 transitions, 1403 flow [2023-11-17 11:56:21,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 11:56:21,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:21,484 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 11:56:21,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-17 11:56:21,485 INFO L420 AbstractCegarLoop]: === Iteration 24 === 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 11:56:21,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:21,485 INFO L85 PathProgramCache]: Analyzing trace with hash 644232649, now seen corresponding path program 2 times [2023-11-17 11:56:21,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:21,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085904061] [2023-11-17 11:56:21,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:21,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:21,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:21,589 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:56:21,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:21,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085904061] [2023-11-17 11:56:21,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085904061] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:21,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:21,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:56:21,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77920912] [2023-11-17 11:56:21,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:21,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:56:21,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:21,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:56:21,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:56:21,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:56:21,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 132 transitions, 1403 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 11:56:21,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:21,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:56:21,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:22,415 INFO L124 PetriNetUnfolderBase]: 1881/2810 cut-off events. [2023-11-17 11:56:22,415 INFO L125 PetriNetUnfolderBase]: For 10379/10379 co-relation queries the response was YES. [2023-11-17 11:56:22,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12402 conditions, 2810 events. 1881/2810 cut-off events. For 10379/10379 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 12642 event pairs, 271 based on Foata normal form. 14/2046 useless extension candidates. Maximal degree in co-relation 12369. Up to 2508 conditions per place. [2023-11-17 11:56:22,429 INFO L140 encePairwiseOnDemand]: 72/76 looper letters, 140 selfloop transitions, 15 changer transitions 1/156 dead transitions. [2023-11-17 11:56:22,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 156 transitions, 1787 flow [2023-11-17 11:56:22,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:56:22,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:56:22,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2023-11-17 11:56:22,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26973684210526316 [2023-11-17 11:56:22,433 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 82 transitions. [2023-11-17 11:56:22,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 82 transitions. [2023-11-17 11:56:22,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:22,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 82 transitions. [2023-11-17 11:56:22,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 11:56:22,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 11:56:22,435 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 11:56:22,435 INFO L175 Difference]: Start difference. First operand has 95 places, 132 transitions, 1403 flow. Second operand 4 states and 82 transitions. [2023-11-17 11:56:22,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 156 transitions, 1787 flow [2023-11-17 11:56:22,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 156 transitions, 1779 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-11-17 11:56:22,454 INFO L231 Difference]: Finished difference. Result has 98 places, 127 transitions, 1347 flow [2023-11-17 11:56:22,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=1317, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1347, PETRI_PLACES=98, PETRI_TRANSITIONS=127} [2023-11-17 11:56:22,455 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 66 predicate places. [2023-11-17 11:56:22,455 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 127 transitions, 1347 flow [2023-11-17 11:56:22,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 11:56:22,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:22,455 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 11:56:22,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-17 11:56:22,456 INFO L420 AbstractCegarLoop]: === Iteration 25 === 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 11:56:22,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:22,456 INFO L85 PathProgramCache]: Analyzing trace with hash -455729638, now seen corresponding path program 3 times [2023-11-17 11:56:22,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:22,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439239527] [2023-11-17 11:56:22,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:22,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:22,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:22,557 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:56:22,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:22,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439239527] [2023-11-17 11:56:22,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439239527] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:22,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:22,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:56:22,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536359495] [2023-11-17 11:56:22,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:22,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:56:22,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:22,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:56:22,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:56:22,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:56:22,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 127 transitions, 1347 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 11:56:22,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:22,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:56:22,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:23,239 INFO L124 PetriNetUnfolderBase]: 1822/2719 cut-off events. [2023-11-17 11:56:23,239 INFO L125 PetriNetUnfolderBase]: For 11026/11026 co-relation queries the response was YES. [2023-11-17 11:56:23,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12123 conditions, 2719 events. 1822/2719 cut-off events. For 11026/11026 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 12093 event pairs, 508 based on Foata normal form. 10/1977 useless extension candidates. Maximal degree in co-relation 12089. Up to 2407 conditions per place. [2023-11-17 11:56:23,253 INFO L140 encePairwiseOnDemand]: 73/76 looper letters, 151 selfloop transitions, 5 changer transitions 8/164 dead transitions. [2023-11-17 11:56:23,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 164 transitions, 1842 flow [2023-11-17 11:56:23,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:56:23,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:56:23,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2023-11-17 11:56:23,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28618421052631576 [2023-11-17 11:56:23,254 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 87 transitions. [2023-11-17 11:56:23,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 87 transitions. [2023-11-17 11:56:23,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:23,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 87 transitions. [2023-11-17 11:56:23,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 11:56:23,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 11:56:23,256 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 11:56:23,256 INFO L175 Difference]: Start difference. First operand has 98 places, 127 transitions, 1347 flow. Second operand 4 states and 87 transitions. [2023-11-17 11:56:23,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 164 transitions, 1842 flow [2023-11-17 11:56:23,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 164 transitions, 1814 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:56:23,282 INFO L231 Difference]: Finished difference. Result has 100 places, 126 transitions, 1311 flow [2023-11-17 11:56:23,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=1321, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1311, PETRI_PLACES=100, PETRI_TRANSITIONS=126} [2023-11-17 11:56:23,282 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 68 predicate places. [2023-11-17 11:56:23,282 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 126 transitions, 1311 flow [2023-11-17 11:56:23,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 11:56:23,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:23,283 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 11:56:23,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-17 11:56:23,283 INFO L420 AbstractCegarLoop]: === Iteration 26 === 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 11:56:23,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:23,283 INFO L85 PathProgramCache]: Analyzing trace with hash -556343746, now seen corresponding path program 4 times [2023-11-17 11:56:23,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:23,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002428427] [2023-11-17 11:56:23,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:23,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:23,381 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:56:23,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:23,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002428427] [2023-11-17 11:56:23,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002428427] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:23,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:23,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:56:23,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312523531] [2023-11-17 11:56:23,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:23,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:56:23,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:23,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:56:23,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:56:23,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:56:23,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 126 transitions, 1311 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 11:56:23,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:23,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:56:23,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:24,041 INFO L124 PetriNetUnfolderBase]: 1814/2701 cut-off events. [2023-11-17 11:56:24,042 INFO L125 PetriNetUnfolderBase]: For 10085/10085 co-relation queries the response was YES. [2023-11-17 11:56:24,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12029 conditions, 2701 events. 1814/2701 cut-off events. For 10085/10085 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 11951 event pairs, 209 based on Foata normal form. 6/1955 useless extension candidates. Maximal degree in co-relation 11994. Up to 2409 conditions per place. [2023-11-17 11:56:24,055 INFO L140 encePairwiseOnDemand]: 72/76 looper letters, 138 selfloop transitions, 8 changer transitions 8/154 dead transitions. [2023-11-17 11:56:24,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 154 transitions, 1783 flow [2023-11-17 11:56:24,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:56:24,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:56:24,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2023-11-17 11:56:24,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27631578947368424 [2023-11-17 11:56:24,056 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 84 transitions. [2023-11-17 11:56:24,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 84 transitions. [2023-11-17 11:56:24,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:24,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 84 transitions. [2023-11-17 11:56:24,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 11:56:24,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 11:56:24,057 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 11:56:24,057 INFO L175 Difference]: Start difference. First operand has 100 places, 126 transitions, 1311 flow. Second operand 4 states and 84 transitions. [2023-11-17 11:56:24,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 154 transitions, 1783 flow [2023-11-17 11:56:24,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 154 transitions, 1767 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-17 11:56:24,080 INFO L231 Difference]: Finished difference. Result has 102 places, 126 transitions, 1331 flow [2023-11-17 11:56:24,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=1299, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1331, PETRI_PLACES=102, PETRI_TRANSITIONS=126} [2023-11-17 11:56:24,081 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 70 predicate places. [2023-11-17 11:56:24,081 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 126 transitions, 1331 flow [2023-11-17 11:56:24,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 11:56:24,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:24,081 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 11:56:24,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-17 11:56:24,081 INFO L420 AbstractCegarLoop]: === Iteration 27 === 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 11:56:24,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:24,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1015861969, now seen corresponding path program 3 times [2023-11-17 11:56:24,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:24,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962926938] [2023-11-17 11:56:24,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:24,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:24,191 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:56:24,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:24,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962926938] [2023-11-17 11:56:24,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962926938] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:24,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:24,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:56:24,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284441768] [2023-11-17 11:56:24,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:24,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:56:24,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:24,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:56:24,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:56:24,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:56:24,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 126 transitions, 1331 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 11:56:24,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:24,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:56:24,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:24,817 INFO L124 PetriNetUnfolderBase]: 1675/2472 cut-off events. [2023-11-17 11:56:24,818 INFO L125 PetriNetUnfolderBase]: For 10004/10004 co-relation queries the response was YES. [2023-11-17 11:56:24,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10920 conditions, 2472 events. 1675/2472 cut-off events. For 10004/10004 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 10539 event pairs, 187 based on Foata normal form. 36/1808 useless extension candidates. Maximal degree in co-relation 10884. Up to 1940 conditions per place. [2023-11-17 11:56:24,829 INFO L140 encePairwiseOnDemand]: 72/76 looper letters, 131 selfloop transitions, 17 changer transitions 4/152 dead transitions. [2023-11-17 11:56:24,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 152 transitions, 1739 flow [2023-11-17 11:56:24,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:56:24,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:56:24,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2023-11-17 11:56:24,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28289473684210525 [2023-11-17 11:56:24,831 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 86 transitions. [2023-11-17 11:56:24,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 86 transitions. [2023-11-17 11:56:24,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:24,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 86 transitions. [2023-11-17 11:56:24,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 11:56:24,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 11:56:24,832 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 11:56:24,832 INFO L175 Difference]: Start difference. First operand has 102 places, 126 transitions, 1331 flow. Second operand 4 states and 86 transitions. [2023-11-17 11:56:24,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 152 transitions, 1739 flow [2023-11-17 11:56:24,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 152 transitions, 1729 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-17 11:56:24,851 INFO L231 Difference]: Finished difference. Result has 103 places, 120 transitions, 1275 flow [2023-11-17 11:56:24,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=1290, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1275, PETRI_PLACES=103, PETRI_TRANSITIONS=120} [2023-11-17 11:56:24,852 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 71 predicate places. [2023-11-17 11:56:24,852 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 120 transitions, 1275 flow [2023-11-17 11:56:24,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 11:56:24,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:24,852 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 11:56:24,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-17 11:56:24,852 INFO L420 AbstractCegarLoop]: === Iteration 28 === 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 11:56:24,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:24,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1511368005, now seen corresponding path program 4 times [2023-11-17 11:56:24,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:24,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266385832] [2023-11-17 11:56:24,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:24,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:24,944 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:56:24,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:24,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266385832] [2023-11-17 11:56:24,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266385832] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:24,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:24,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:56:24,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299440029] [2023-11-17 11:56:24,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:24,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:56:24,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:24,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:56:24,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:56:24,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:56:24,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 120 transitions, 1275 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 11:56:24,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:24,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:56:24,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:25,623 INFO L124 PetriNetUnfolderBase]: 1662/2449 cut-off events. [2023-11-17 11:56:25,623 INFO L125 PetriNetUnfolderBase]: For 9112/9112 co-relation queries the response was YES. [2023-11-17 11:56:25,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10859 conditions, 2449 events. 1662/2449 cut-off events. For 9112/9112 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 10405 event pairs, 198 based on Foata normal form. 6/1757 useless extension candidates. Maximal degree in co-relation 10824. Up to 2340 conditions per place. [2023-11-17 11:56:25,634 INFO L140 encePairwiseOnDemand]: 72/76 looper letters, 116 selfloop transitions, 6 changer transitions 7/129 dead transitions. [2023-11-17 11:56:25,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 129 transitions, 1552 flow [2023-11-17 11:56:25,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:56:25,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:56:25,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2023-11-17 11:56:25,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24342105263157895 [2023-11-17 11:56:25,635 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 74 transitions. [2023-11-17 11:56:25,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 74 transitions. [2023-11-17 11:56:25,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:25,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 74 transitions. [2023-11-17 11:56:25,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 11:56:25,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 11:56:25,636 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 11:56:25,636 INFO L175 Difference]: Start difference. First operand has 103 places, 120 transitions, 1275 flow. Second operand 4 states and 74 transitions. [2023-11-17 11:56:25,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 129 transitions, 1552 flow [2023-11-17 11:56:25,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 129 transitions, 1496 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-11-17 11:56:25,651 INFO L231 Difference]: Finished difference. Result has 101 places, 115 transitions, 1175 flow [2023-11-17 11:56:25,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=1200, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1175, PETRI_PLACES=101, PETRI_TRANSITIONS=115} [2023-11-17 11:56:25,652 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 69 predicate places. [2023-11-17 11:56:25,652 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 115 transitions, 1175 flow [2023-11-17 11:56:25,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 11:56:25,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:25,652 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 11:56:25,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-17 11:56:25,652 INFO L420 AbstractCegarLoop]: === Iteration 29 === 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 11:56:25,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:25,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1837577220, now seen corresponding path program 5 times [2023-11-17 11:56:25,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:25,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949744953] [2023-11-17 11:56:25,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:25,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:25,754 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:56:25,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:25,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949744953] [2023-11-17 11:56:25,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949744953] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:25,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:25,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:56:25,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299754892] [2023-11-17 11:56:25,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:25,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:56:25,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:25,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:56:25,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:56:25,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:56:25,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 115 transitions, 1175 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 11:56:25,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:25,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:56:25,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:26,293 INFO L124 PetriNetUnfolderBase]: 1593/2330 cut-off events. [2023-11-17 11:56:26,293 INFO L125 PetriNetUnfolderBase]: For 8287/8287 co-relation queries the response was YES. [2023-11-17 11:56:26,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10191 conditions, 2330 events. 1593/2330 cut-off events. For 8287/8287 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9567 event pairs, 452 based on Foata normal form. 6/1670 useless extension candidates. Maximal degree in co-relation 10158. Up to 2183 conditions per place. [2023-11-17 11:56:26,305 INFO L140 encePairwiseOnDemand]: 73/76 looper letters, 123 selfloop transitions, 2 changer transitions 9/134 dead transitions. [2023-11-17 11:56:26,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 134 transitions, 1485 flow [2023-11-17 11:56:26,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:56:26,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:56:26,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2023-11-17 11:56:26,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25 [2023-11-17 11:56:26,306 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 76 transitions. [2023-11-17 11:56:26,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 76 transitions. [2023-11-17 11:56:26,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:26,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 76 transitions. [2023-11-17 11:56:26,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 11:56:26,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 11:56:26,307 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 11:56:26,307 INFO L175 Difference]: Start difference. First operand has 101 places, 115 transitions, 1175 flow. Second operand 4 states and 76 transitions. [2023-11-17 11:56:26,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 134 transitions, 1485 flow [2023-11-17 11:56:26,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 134 transitions, 1456 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-11-17 11:56:26,321 INFO L231 Difference]: Finished difference. Result has 100 places, 112 transitions, 1095 flow [2023-11-17 11:56:26,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=1100, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1095, PETRI_PLACES=100, PETRI_TRANSITIONS=112} [2023-11-17 11:56:26,322 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 68 predicate places. [2023-11-17 11:56:26,322 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 112 transitions, 1095 flow [2023-11-17 11:56:26,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 11:56:26,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:26,322 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 11:56:26,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-17 11:56:26,322 INFO L420 AbstractCegarLoop]: === Iteration 30 === 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 11:56:26,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:26,322 INFO L85 PathProgramCache]: Analyzing trace with hash 32588283, now seen corresponding path program 5 times [2023-11-17 11:56:26,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:26,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907908226] [2023-11-17 11:56:26,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:26,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:26,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:26,441 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:56:26,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:26,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907908226] [2023-11-17 11:56:26,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907908226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:26,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:26,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:56:26,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238432078] [2023-11-17 11:56:26,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:26,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:56:26,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:26,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:56:26,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:56:26,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:56:26,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 112 transitions, 1095 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 11:56:26,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:26,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:56:26,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:26,970 INFO L124 PetriNetUnfolderBase]: 1504/2181 cut-off events. [2023-11-17 11:56:26,970 INFO L125 PetriNetUnfolderBase]: For 7445/7445 co-relation queries the response was YES. [2023-11-17 11:56:26,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9338 conditions, 2181 events. 1504/2181 cut-off events. For 7445/7445 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 8620 event pairs, 448 based on Foata normal form. 8/1567 useless extension candidates. Maximal degree in co-relation 9305. Up to 2063 conditions per place. [2023-11-17 11:56:26,983 INFO L140 encePairwiseOnDemand]: 73/76 looper letters, 125 selfloop transitions, 3 changer transitions 2/130 dead transitions. [2023-11-17 11:56:26,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 130 transitions, 1434 flow [2023-11-17 11:56:26,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:56:26,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:56:26,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 75 transitions. [2023-11-17 11:56:26,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24671052631578946 [2023-11-17 11:56:26,984 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 75 transitions. [2023-11-17 11:56:26,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 75 transitions. [2023-11-17 11:56:26,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:26,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 75 transitions. [2023-11-17 11:56:26,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 11:56:26,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 11:56:26,985 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 11:56:26,985 INFO L175 Difference]: Start difference. First operand has 100 places, 112 transitions, 1095 flow. Second operand 4 states and 75 transitions. [2023-11-17 11:56:26,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 130 transitions, 1434 flow [2023-11-17 11:56:27,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 130 transitions, 1412 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-17 11:56:27,001 INFO L231 Difference]: Finished difference. Result has 99 places, 110 transitions, 1052 flow [2023-11-17 11:56:27,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=1073, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1052, PETRI_PLACES=99, PETRI_TRANSITIONS=110} [2023-11-17 11:56:27,002 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 67 predicate places. [2023-11-17 11:56:27,002 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 110 transitions, 1052 flow [2023-11-17 11:56:27,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 11:56:27,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:27,002 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 11:56:27,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-17 11:56:27,002 INFO L420 AbstractCegarLoop]: === Iteration 31 === 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 11:56:27,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:27,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1286530753, now seen corresponding path program 6 times [2023-11-17 11:56:27,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:27,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930939438] [2023-11-17 11:56:27,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:27,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:27,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:27,098 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:56:27,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:27,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930939438] [2023-11-17 11:56:27,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930939438] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:27,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:27,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:56:27,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705582331] [2023-11-17 11:56:27,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:27,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:56:27,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:27,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:56:27,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:56:27,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:56:27,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 110 transitions, 1052 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 11:56:27,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:27,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:56:27,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:27,598 INFO L124 PetriNetUnfolderBase]: 1449/2078 cut-off events. [2023-11-17 11:56:27,599 INFO L125 PetriNetUnfolderBase]: For 6215/6215 co-relation queries the response was YES. [2023-11-17 11:56:27,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8888 conditions, 2078 events. 1449/2078 cut-off events. For 6215/6215 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 7913 event pairs, 436 based on Foata normal form. 6/1488 useless extension candidates. Maximal degree in co-relation 8857. Up to 2063 conditions per place. [2023-11-17 11:56:27,609 INFO L140 encePairwiseOnDemand]: 73/76 looper letters, 105 selfloop transitions, 0 changer transitions 8/113 dead transitions. [2023-11-17 11:56:27,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 113 transitions, 1253 flow [2023-11-17 11:56:27,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:56:27,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:56:27,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2023-11-17 11:56:27,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.21052631578947367 [2023-11-17 11:56:27,610 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 64 transitions. [2023-11-17 11:56:27,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 64 transitions. [2023-11-17 11:56:27,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:27,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 64 transitions. [2023-11-17 11:56:27,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 11:56:27,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 11:56:27,611 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 11:56:27,611 INFO L175 Difference]: Start difference. First operand has 99 places, 110 transitions, 1052 flow. Second operand 4 states and 64 transitions. [2023-11-17 11:56:27,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 113 transitions, 1253 flow [2023-11-17 11:56:27,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 113 transitions, 1243 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-17 11:56:27,623 INFO L231 Difference]: Finished difference. Result has 96 places, 105 transitions, 956 flow [2023-11-17 11:56:27,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=989, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=956, PETRI_PLACES=96, PETRI_TRANSITIONS=105} [2023-11-17 11:56:27,624 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 64 predicate places. [2023-11-17 11:56:27,624 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 105 transitions, 956 flow [2023-11-17 11:56:27,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 11:56:27,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:27,624 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 11:56:27,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-17 11:56:27,624 INFO L420 AbstractCegarLoop]: === Iteration 32 === 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 11:56:27,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:27,625 INFO L85 PathProgramCache]: Analyzing trace with hash -689079424, now seen corresponding path program 6 times [2023-11-17 11:56:27,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:27,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241321501] [2023-11-17 11:56:27,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:27,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:27,731 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:56:27,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:27,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241321501] [2023-11-17 11:56:27,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241321501] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:27,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:27,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:56:27,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602179650] [2023-11-17 11:56:27,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:27,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:56:27,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:27,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:56:27,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:56:27,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:56:27,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 105 transitions, 956 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 11:56:27,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:27,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:56:27,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:28,217 INFO L124 PetriNetUnfolderBase]: 1357/1934 cut-off events. [2023-11-17 11:56:28,217 INFO L125 PetriNetUnfolderBase]: For 5269/5269 co-relation queries the response was YES. [2023-11-17 11:56:28,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8092 conditions, 1934 events. 1357/1934 cut-off events. For 5269/5269 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 7222 event pairs, 131 based on Foata normal form. 32/1402 useless extension candidates. Maximal degree in co-relation 8063. Up to 1779 conditions per place. [2023-11-17 11:56:28,225 INFO L140 encePairwiseOnDemand]: 72/76 looper letters, 105 selfloop transitions, 13 changer transitions 0/118 dead transitions. [2023-11-17 11:56:28,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 118 transitions, 1212 flow [2023-11-17 11:56:28,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:56:28,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:56:28,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2023-11-17 11:56:28,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25 [2023-11-17 11:56:28,227 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 76 transitions. [2023-11-17 11:56:28,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 76 transitions. [2023-11-17 11:56:28,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:28,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 76 transitions. [2023-11-17 11:56:28,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 11:56:28,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 11:56:28,228 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 11:56:28,228 INFO L175 Difference]: Start difference. First operand has 96 places, 105 transitions, 956 flow. Second operand 4 states and 76 transitions. [2023-11-17 11:56:28,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 118 transitions, 1212 flow [2023-11-17 11:56:28,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 118 transitions, 1144 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-11-17 11:56:28,237 INFO L231 Difference]: Finished difference. Result has 81 places, 102 transitions, 873 flow [2023-11-17 11:56:28,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=847, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=873, PETRI_PLACES=81, PETRI_TRANSITIONS=102} [2023-11-17 11:56:28,238 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 49 predicate places. [2023-11-17 11:56:28,238 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 102 transitions, 873 flow [2023-11-17 11:56:28,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 11:56:28,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:28,238 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 11:56:28,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-17 11:56:28,239 INFO L420 AbstractCegarLoop]: === Iteration 33 === 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 11:56:28,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:28,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1704470148, now seen corresponding path program 1 times [2023-11-17 11:56:28,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:28,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473200362] [2023-11-17 11:56:28,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:28,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:28,373 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-17 11:56:28,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:28,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473200362] [2023-11-17 11:56:28,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473200362] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:28,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:28,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:56:28,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352188209] [2023-11-17 11:56:28,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:28,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:56:28,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:28,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:56:28,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:56:28,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:56:28,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 102 transitions, 873 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 11:56:28,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:28,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:56:28,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:28,875 INFO L124 PetriNetUnfolderBase]: 1454/2095 cut-off events. [2023-11-17 11:56:28,875 INFO L125 PetriNetUnfolderBase]: For 4414/4414 co-relation queries the response was YES. [2023-11-17 11:56:28,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8460 conditions, 2095 events. 1454/2095 cut-off events. For 4414/4414 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 7990 event pairs, 371 based on Foata normal form. 0/1539 useless extension candidates. Maximal degree in co-relation 8433. Up to 1728 conditions per place. [2023-11-17 11:56:28,883 INFO L140 encePairwiseOnDemand]: 73/76 looper letters, 107 selfloop transitions, 14 changer transitions 0/121 dead transitions. [2023-11-17 11:56:28,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 121 transitions, 1226 flow [2023-11-17 11:56:28,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:56:28,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:56:28,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2023-11-17 11:56:28,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2719298245614035 [2023-11-17 11:56:28,885 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 62 transitions. [2023-11-17 11:56:28,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 62 transitions. [2023-11-17 11:56:28,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:28,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 62 transitions. [2023-11-17 11:56:28,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 11:56:28,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states 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 11:56:28,886 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states 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 11:56:28,886 INFO L175 Difference]: Start difference. First operand has 81 places, 102 transitions, 873 flow. Second operand 3 states and 62 transitions. [2023-11-17 11:56:28,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 121 transitions, 1226 flow [2023-11-17 11:56:28,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 121 transitions, 1203 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-17 11:56:28,894 INFO L231 Difference]: Finished difference. Result has 82 places, 104 transitions, 913 flow [2023-11-17 11:56:28,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=853, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=913, PETRI_PLACES=82, PETRI_TRANSITIONS=104} [2023-11-17 11:56:28,895 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 50 predicate places. [2023-11-17 11:56:28,895 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 104 transitions, 913 flow [2023-11-17 11:56:28,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 11:56:28,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:28,895 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 11:56:28,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-17 11:56:28,895 INFO L420 AbstractCegarLoop]: === Iteration 34 === 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 11:56:28,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:28,896 INFO L85 PathProgramCache]: Analyzing trace with hash 995885707, now seen corresponding path program 1 times [2023-11-17 11:56:28,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:28,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622490979] [2023-11-17 11:56:28,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:28,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:29,057 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-17 11:56:29,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:29,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622490979] [2023-11-17 11:56:29,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622490979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:29,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:29,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:56:29,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574258545] [2023-11-17 11:56:29,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:29,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:56:29,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:29,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:56:29,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:56:29,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:56:29,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 104 transitions, 913 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 11:56:29,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:29,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:56:29,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:29,566 INFO L124 PetriNetUnfolderBase]: 1484/2179 cut-off events. [2023-11-17 11:56:29,566 INFO L125 PetriNetUnfolderBase]: For 5554/5554 co-relation queries the response was YES. [2023-11-17 11:56:29,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8985 conditions, 2179 events. 1484/2179 cut-off events. For 5554/5554 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 8733 event pairs, 352 based on Foata normal form. 36/1689 useless extension candidates. Maximal degree in co-relation 8958. Up to 1743 conditions per place. [2023-11-17 11:56:29,577 INFO L140 encePairwiseOnDemand]: 73/76 looper letters, 111 selfloop transitions, 16 changer transitions 0/127 dead transitions. [2023-11-17 11:56:29,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 127 transitions, 1311 flow [2023-11-17 11:56:29,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:56:29,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:56:29,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2023-11-17 11:56:29,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2719298245614035 [2023-11-17 11:56:29,578 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 62 transitions. [2023-11-17 11:56:29,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 62 transitions. [2023-11-17 11:56:29,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:29,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 62 transitions. [2023-11-17 11:56:29,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 11:56:29,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states 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 11:56:29,579 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states 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 11:56:29,579 INFO L175 Difference]: Start difference. First operand has 82 places, 104 transitions, 913 flow. Second operand 3 states and 62 transitions. [2023-11-17 11:56:29,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 127 transitions, 1311 flow [2023-11-17 11:56:29,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 127 transitions, 1288 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-17 11:56:29,589 INFO L231 Difference]: Finished difference. Result has 84 places, 105 transitions, 957 flow [2023-11-17 11:56:29,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=957, PETRI_PLACES=84, PETRI_TRANSITIONS=105} [2023-11-17 11:56:29,590 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 52 predicate places. [2023-11-17 11:56:29,590 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 105 transitions, 957 flow [2023-11-17 11:56:29,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 11:56:29,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:29,590 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 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 11:56:29,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-17 11:56:29,591 INFO L420 AbstractCegarLoop]: === Iteration 35 === 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 11:56:29,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:29,591 INFO L85 PathProgramCache]: Analyzing trace with hash 624793358, now seen corresponding path program 1 times [2023-11-17 11:56:29,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:29,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046891002] [2023-11-17 11:56:29,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:29,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:35,253 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 11:56:35,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:35,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046891002] [2023-11-17 11:56:35,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046891002] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:56:35,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302911422] [2023-11-17 11:56:35,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:35,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:56:35,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:56:35,257 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:56:35,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-17 11:56:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:35,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 79 conjunts are in the unsatisfiable core [2023-11-17 11:56:35,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:56:37,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 11:56:37,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 11:56:37,081 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-17 11:56:37,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 92 [2023-11-17 11:56:38,938 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:56:38,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 397 treesize of output 477 [2023-11-17 11:56:40,288 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 11:56:40,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:56:44,629 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:56:44,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 710 treesize of output 1076 [2023-11-17 11:56:44,720 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:56:44,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 426 treesize of output 431 [2023-11-17 11:56:44,830 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:56:44,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 422 treesize of output 427 [2023-11-17 11:56:44,942 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:56:44,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 418 treesize of output 423 [2023-11-17 11:56:45,068 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:56:45,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 414 treesize of output 419 [2023-11-17 11:56:45,208 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:56:45,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 410 treesize of output 415 [2023-11-17 11:56:45,337 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:56:45,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 406 treesize of output 411 [2023-11-17 11:56:45,457 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:56:45,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 402 treesize of output 407 [2023-11-17 11:56:45,556 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:56:45,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 398 treesize of output 403 [2023-11-17 11:57:21,134 INFO L209 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-11-17 11:57:24,025 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 11:57:24,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302911422] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:57:24,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:57:24,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 41 [2023-11-17 11:57:24,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757719356] [2023-11-17 11:57:24,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:57:24,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-11-17 11:57:24,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:57:24,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-11-17 11:57:24,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1650, Unknown=2, NotChecked=0, Total=1806 [2023-11-17 11:57:24,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:57:24,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 105 transitions, 957 flow. Second operand has 43 states, 43 states have (on average 8.953488372093023) internal successors, (385), 43 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:57:24,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:57:24,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:57:24,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:57:31,839 INFO L124 PetriNetUnfolderBase]: 3395/5126 cut-off events. [2023-11-17 11:57:31,840 INFO L125 PetriNetUnfolderBase]: For 11512/11512 co-relation queries the response was YES. [2023-11-17 11:57:31,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20468 conditions, 5126 events. 3395/5126 cut-off events. For 11512/11512 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 26033 event pairs, 283 based on Foata normal form. 5/3841 useless extension candidates. Maximal degree in co-relation 20440. Up to 1895 conditions per place. [2023-11-17 11:57:31,863 INFO L140 encePairwiseOnDemand]: 64/76 looper letters, 335 selfloop transitions, 142 changer transitions 20/497 dead transitions. [2023-11-17 11:57:31,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 497 transitions, 4381 flow [2023-11-17 11:57:31,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-17 11:57:31,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-17 11:57:31,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 456 transitions. [2023-11-17 11:57:31,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2222222222222222 [2023-11-17 11:57:31,866 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 456 transitions. [2023-11-17 11:57:31,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 456 transitions. [2023-11-17 11:57:31,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:57:31,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 456 transitions. [2023-11-17 11:57:31,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 16.88888888888889) internal successors, (456), 27 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 11:57:31,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 76.0) internal successors, (2128), 28 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states 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 11:57:31,870 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 76.0) internal successors, (2128), 28 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states 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 11:57:31,870 INFO L175 Difference]: Start difference. First operand has 84 places, 105 transitions, 957 flow. Second operand 27 states and 456 transitions. [2023-11-17 11:57:31,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 497 transitions, 4381 flow [2023-11-17 11:57:31,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 497 transitions, 4266 flow, removed 23 selfloop flow, removed 1 redundant places. [2023-11-17 11:57:31,901 INFO L231 Difference]: Finished difference. Result has 127 places, 230 transitions, 2573 flow [2023-11-17 11:57:31,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=937, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2573, PETRI_PLACES=127, PETRI_TRANSITIONS=230} [2023-11-17 11:57:31,902 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 95 predicate places. [2023-11-17 11:57:31,902 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 230 transitions, 2573 flow [2023-11-17 11:57:31,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 8.953488372093023) internal successors, (385), 43 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:57:31,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:57:31,903 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 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 11:57:31,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-17 11:57:32,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-17 11:57:32,110 INFO L420 AbstractCegarLoop]: === Iteration 36 === 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 11:57:32,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:57:32,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1263674452, now seen corresponding path program 2 times [2023-11-17 11:57:32,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:57:32,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677653541] [2023-11-17 11:57:32,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:57:32,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:57:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:57:38,355 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 11:57:38,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:57:38,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677653541] [2023-11-17 11:57:38,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677653541] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:57:38,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452512141] [2023-11-17 11:57:38,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 11:57:38,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:57:38,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:57:38,356 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:57:38,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-17 11:57:38,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 11:57:38,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:57:38,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 73 conjunts are in the unsatisfiable core [2023-11-17 11:57:38,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:57:41,112 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:57:41,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 320 treesize of output 304 [2023-11-17 11:57:41,801 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 11:57:41,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:57:45,670 INFO L349 Elim1Store]: treesize reduction 13, result has 95.7 percent of original size [2023-11-17 11:57:45,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 359 treesize of output 572 [2023-11-17 11:57:47,467 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 11:57:47,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452512141] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:57:47,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:57:47,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 10] total 32 [2023-11-17 11:57:47,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353697938] [2023-11-17 11:57:47,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:57:47,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-17 11:57:47,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:57:47,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-17 11:57:47,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=948, Unknown=0, NotChecked=0, Total=1056 [2023-11-17 11:57:47,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:57:47,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 230 transitions, 2573 flow. Second operand has 33 states, 33 states have (on average 9.151515151515152) internal successors, (302), 33 states have internal predecessors, (302), 0 states have call successors, (0), 0 states 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 11:57:47,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:57:47,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:57:47,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:58:01,022 INFO L124 PetriNetUnfolderBase]: 7640/11797 cut-off events. [2023-11-17 11:58:01,022 INFO L125 PetriNetUnfolderBase]: For 55623/55623 co-relation queries the response was YES. [2023-11-17 11:58:01,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56767 conditions, 11797 events. 7640/11797 cut-off events. For 55623/55623 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 73148 event pairs, 740 based on Foata normal form. 8/10749 useless extension candidates. Maximal degree in co-relation 56721. Up to 4603 conditions per place. [2023-11-17 11:58:01,106 INFO L140 encePairwiseOnDemand]: 61/76 looper letters, 461 selfloop transitions, 510 changer transitions 25/996 dead transitions. [2023-11-17 11:58:01,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 996 transitions, 11394 flow [2023-11-17 11:58:01,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-11-17 11:58:01,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-11-17 11:58:01,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 786 transitions. [2023-11-17 11:58:01,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.19888663967611336 [2023-11-17 11:58:01,110 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 786 transitions. [2023-11-17 11:58:01,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 786 transitions. [2023-11-17 11:58:01,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:58:01,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 786 transitions. [2023-11-17 11:58:01,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 15.115384615384615) internal successors, (786), 52 states have internal predecessors, (786), 0 states have call successors, (0), 0 states 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 11:58:01,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 76.0) internal successors, (4028), 53 states have internal predecessors, (4028), 0 states have call successors, (0), 0 states 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 11:58:01,117 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 76.0) internal successors, (4028), 53 states have internal predecessors, (4028), 0 states have call successors, (0), 0 states 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 11:58:01,117 INFO L175 Difference]: Start difference. First operand has 127 places, 230 transitions, 2573 flow. Second operand 52 states and 786 transitions. [2023-11-17 11:58:01,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 996 transitions, 11394 flow [2023-11-17 11:58:01,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 996 transitions, 10916 flow, removed 123 selfloop flow, removed 4 redundant places. [2023-11-17 11:58:01,545 INFO L231 Difference]: Finished difference. Result has 208 places, 704 transitions, 9185 flow [2023-11-17 11:58:01,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=2445, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=9185, PETRI_PLACES=208, PETRI_TRANSITIONS=704} [2023-11-17 11:58:01,545 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 176 predicate places. [2023-11-17 11:58:01,546 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 704 transitions, 9185 flow [2023-11-17 11:58:01,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 9.151515151515152) internal successors, (302), 33 states have internal predecessors, (302), 0 states have call successors, (0), 0 states 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 11:58:01,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:58:01,546 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 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 11:58:01,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-17 11:58:01,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:58:01,746 INFO L420 AbstractCegarLoop]: === Iteration 37 === 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 11:58:01,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:58:01,747 INFO L85 PathProgramCache]: Analyzing trace with hash 474821626, now seen corresponding path program 3 times [2023-11-17 11:58:01,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:58:01,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712831888] [2023-11-17 11:58:01,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:58:01,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:58:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:58:07,170 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 11:58:07,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:58:07,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712831888] [2023-11-17 11:58:07,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712831888] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:58:07,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992532969] [2023-11-17 11:58:07,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 11:58:07,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:58:07,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:58:07,173 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:58:07,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-17 11:58:07,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 11:58:07,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:58:07,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 71 conjunts are in the unsatisfiable core [2023-11-17 11:58:07,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:58:09,525 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:58:09,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 285 treesize of output 273 [2023-11-17 11:58:10,062 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 11:58:10,062 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:58:14,574 INFO L349 Elim1Store]: treesize reduction 13, result has 98.1 percent of original size [2023-11-17 11:58:14,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 416 treesize of output 969 [2023-11-17 11:58:18,956 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 11:58:18,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992532969] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:58:18,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:58:18,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 10] total 32 [2023-11-17 11:58:18,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734400040] [2023-11-17 11:58:18,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:58:18,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-17 11:58:18,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:58:18,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-17 11:58:18,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2023-11-17 11:58:18,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:58:18,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 704 transitions, 9185 flow. Second operand has 33 states, 33 states have (on average 9.151515151515152) internal successors, (302), 33 states have internal predecessors, (302), 0 states have call successors, (0), 0 states 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 11:58:18,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:58:18,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:58:18,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:58:24,524 INFO L124 PetriNetUnfolderBase]: 7671/11863 cut-off events. [2023-11-17 11:58:24,524 INFO L125 PetriNetUnfolderBase]: For 110236/110236 co-relation queries the response was YES. [2023-11-17 11:58:24,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74060 conditions, 11863 events. 7671/11863 cut-off events. For 110236/110236 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 73054 event pairs, 1529 based on Foata normal form. 1/11421 useless extension candidates. Maximal degree in co-relation 73980. Up to 4629 conditions per place. [2023-11-17 11:58:24,644 INFO L140 encePairwiseOnDemand]: 63/76 looper letters, 669 selfloop transitions, 181 changer transitions 1/851 dead transitions. [2023-11-17 11:58:24,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 851 transitions, 12496 flow [2023-11-17 11:58:24,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 11:58:24,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 11:58:24,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 198 transitions. [2023-11-17 11:58:24,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.21710526315789475 [2023-11-17 11:58:24,646 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 198 transitions. [2023-11-17 11:58:24,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 198 transitions. [2023-11-17 11:58:24,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:58:24,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 198 transitions. [2023-11-17 11:58:24,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 16.5) internal successors, (198), 12 states have internal predecessors, (198), 0 states have call successors, (0), 0 states 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 11:58:24,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 76.0) internal successors, (988), 13 states have internal predecessors, (988), 0 states have call successors, (0), 0 states 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 11:58:24,647 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 76.0) internal successors, (988), 13 states have internal predecessors, (988), 0 states have call successors, (0), 0 states 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 11:58:24,647 INFO L175 Difference]: Start difference. First operand has 208 places, 704 transitions, 9185 flow. Second operand 12 states and 198 transitions. [2023-11-17 11:58:24,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 851 transitions, 12496 flow [2023-11-17 11:58:26,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 851 transitions, 11810 flow, removed 322 selfloop flow, removed 3 redundant places. [2023-11-17 11:58:26,449 INFO L231 Difference]: Finished difference. Result has 220 places, 720 transitions, 9153 flow [2023-11-17 11:58:26,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=8499, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=704, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9153, PETRI_PLACES=220, PETRI_TRANSITIONS=720} [2023-11-17 11:58:26,450 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 188 predicate places. [2023-11-17 11:58:26,450 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 720 transitions, 9153 flow [2023-11-17 11:58:26,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 9.151515151515152) internal successors, (302), 33 states have internal predecessors, (302), 0 states have call successors, (0), 0 states 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 11:58:26,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:58:26,451 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 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 11:58:26,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-17 11:58:26,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:58:26,654 INFO L420 AbstractCegarLoop]: === Iteration 38 === 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 11:58:26,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:58:26,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1122945524, now seen corresponding path program 4 times [2023-11-17 11:58:26,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:58:26,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098376102] [2023-11-17 11:58:26,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:58:26,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:58:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:58:31,251 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 11:58:31,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:58:31,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098376102] [2023-11-17 11:58:31,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098376102] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:58:31,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712374573] [2023-11-17 11:58:31,253 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 11:58:31,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:58:31,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:58:31,254 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:58:31,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-17 11:58:31,795 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 11:58:31,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:58:31,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 77 conjunts are in the unsatisfiable core [2023-11-17 11:58:31,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:58:33,729 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:58:33,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 435 treesize of output 427 [2023-11-17 11:58:35,310 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 11:58:35,311 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:58:41,146 INFO L349 Elim1Store]: treesize reduction 28, result has 90.8 percent of original size [2023-11-17 11:58:41,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 312 treesize of output 504 [2023-11-17 11:58:42,664 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 11:58:42,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712374573] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:58:42,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:58:42,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 10] total 32 [2023-11-17 11:58:42,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401831291] [2023-11-17 11:58:42,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:58:42,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-17 11:58:42,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:58:42,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-17 11:58:42,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=953, Unknown=0, NotChecked=0, Total=1056 [2023-11-17 11:58:42,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:58:42,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 720 transitions, 9153 flow. Second operand has 33 states, 33 states have (on average 9.151515151515152) internal successors, (302), 33 states have internal predecessors, (302), 0 states have call successors, (0), 0 states 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 11:58:42,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:58:42,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:58:42,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:59:03,388 INFO L124 PetriNetUnfolderBase]: 9315/14690 cut-off events. [2023-11-17 11:59:03,388 INFO L125 PetriNetUnfolderBase]: For 146193/146193 co-relation queries the response was YES. [2023-11-17 11:59:03,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91930 conditions, 14690 events. 9315/14690 cut-off events. For 146193/146193 co-relation queries the response was YES. Maximal size of possible extension queue 725. Compared 97508 event pairs, 1264 based on Foata normal form. 30/14425 useless extension candidates. Maximal degree in co-relation 91847. Up to 5856 conditions per place. [2023-11-17 11:59:03,538 INFO L140 encePairwiseOnDemand]: 61/76 looper letters, 570 selfloop transitions, 719 changer transitions 36/1325 dead transitions. [2023-11-17 11:59:03,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 1325 transitions, 18207 flow [2023-11-17 11:59:03,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-11-17 11:59:03,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2023-11-17 11:59:03,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 857 transitions. [2023-11-17 11:59:03,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.19441923774954628 [2023-11-17 11:59:03,542 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 857 transitions. [2023-11-17 11:59:03,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 857 transitions. [2023-11-17 11:59:03,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:59:03,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 857 transitions. [2023-11-17 11:59:03,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 14.775862068965518) internal successors, (857), 58 states have internal predecessors, (857), 0 states have call successors, (0), 0 states 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 11:59:03,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 76.0) internal successors, (4484), 59 states have internal predecessors, (4484), 0 states have call successors, (0), 0 states 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 11:59:03,549 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 76.0) internal successors, (4484), 59 states have internal predecessors, (4484), 0 states have call successors, (0), 0 states 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 11:59:03,549 INFO L175 Difference]: Start difference. First operand has 220 places, 720 transitions, 9153 flow. Second operand 58 states and 857 transitions. [2023-11-17 11:59:03,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 1325 transitions, 18207 flow [2023-11-17 11:59:05,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 1325 transitions, 17957 flow, removed 30 selfloop flow, removed 4 redundant places. [2023-11-17 11:59:05,754 INFO L231 Difference]: Finished difference. Result has 306 places, 1044 transitions, 15900 flow [2023-11-17 11:59:05,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=8997, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=720, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=445, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=15900, PETRI_PLACES=306, PETRI_TRANSITIONS=1044} [2023-11-17 11:59:05,755 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 274 predicate places. [2023-11-17 11:59:05,755 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 1044 transitions, 15900 flow [2023-11-17 11:59:05,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 9.151515151515152) internal successors, (302), 33 states have internal predecessors, (302), 0 states have call successors, (0), 0 states 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 11:59:05,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:59:05,755 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 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 11:59:05,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-17 11:59:05,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-17 11:59:05,956 INFO L420 AbstractCegarLoop]: === Iteration 39 === 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 11:59:05,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:59:05,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1385349482, now seen corresponding path program 5 times [2023-11-17 11:59:05,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:59:05,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007470680] [2023-11-17 11:59:05,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:59:05,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:59:06,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:59:09,979 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 11:59:09,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:59:09,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007470680] [2023-11-17 11:59:09,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007470680] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:59:09,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925280980] [2023-11-17 11:59:09,980 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 11:59:09,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:59:09,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:59:09,981 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:59:09,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-17 11:59:10,620 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-17 11:59:10,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:59:10,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 71 conjunts are in the unsatisfiable core [2023-11-17 11:59:10,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:59:12,450 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:59:12,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 389 treesize of output 473 [2023-11-17 11:59:13,563 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 11:59:13,563 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:59:18,136 INFO L349 Elim1Store]: treesize reduction 13, result has 98.1 percent of original size [2023-11-17 11:59:18,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 416 treesize of output 969 [2023-11-17 11:59:23,289 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 11:59:23,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925280980] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:59:23,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:59:23,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 10] total 32 [2023-11-17 11:59:23,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322212385] [2023-11-17 11:59:23,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:59:23,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-17 11:59:23,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:59:23,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-17 11:59:23,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=923, Unknown=0, NotChecked=0, Total=1056 [2023-11-17 11:59:23,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:59:23,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 1044 transitions, 15900 flow. Second operand has 33 states, 33 states have (on average 9.151515151515152) internal successors, (302), 33 states have internal predecessors, (302), 0 states have call successors, (0), 0 states 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 11:59:23,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:59:23,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:59:23,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:59:30,801 INFO L124 PetriNetUnfolderBase]: 9315/14666 cut-off events. [2023-11-17 11:59:30,801 INFO L125 PetriNetUnfolderBase]: For 250514/250514 co-relation queries the response was YES. [2023-11-17 11:59:30,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107808 conditions, 14666 events. 9315/14666 cut-off events. For 250514/250514 co-relation queries the response was YES. Maximal size of possible extension queue 729. Compared 96728 event pairs, 1939 based on Foata normal form. 2/14455 useless extension candidates. Maximal degree in co-relation 107692. Up to 5899 conditions per place. [2023-11-17 11:59:30,988 INFO L140 encePairwiseOnDemand]: 64/76 looper letters, 883 selfloop transitions, 271 changer transitions 1/1155 dead transitions. [2023-11-17 11:59:30,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 1155 transitions, 19553 flow [2023-11-17 11:59:30,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 11:59:30,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 11:59:30,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 196 transitions. [2023-11-17 11:59:30,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2149122807017544 [2023-11-17 11:59:30,989 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 196 transitions. [2023-11-17 11:59:30,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 196 transitions. [2023-11-17 11:59:30,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:59:30,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 196 transitions. [2023-11-17 11:59:30,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 16.333333333333332) internal successors, (196), 12 states have internal predecessors, (196), 0 states have call successors, (0), 0 states 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 11:59:30,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 76.0) internal successors, (988), 13 states have internal predecessors, (988), 0 states have call successors, (0), 0 states 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 11:59:30,991 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 76.0) internal successors, (988), 13 states have internal predecessors, (988), 0 states have call successors, (0), 0 states 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 11:59:30,991 INFO L175 Difference]: Start difference. First operand has 306 places, 1044 transitions, 15900 flow. Second operand 12 states and 196 transitions. [2023-11-17 11:59:30,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 1155 transitions, 19553 flow [2023-11-17 11:59:35,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 1155 transitions, 18121 flow, removed 584 selfloop flow, removed 8 redundant places. [2023-11-17 11:59:35,713 INFO L231 Difference]: Finished difference. Result has 309 places, 1050 transitions, 15180 flow [2023-11-17 11:59:35,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=14516, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1044, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=775, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15180, PETRI_PLACES=309, PETRI_TRANSITIONS=1050} [2023-11-17 11:59:35,714 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 277 predicate places. [2023-11-17 11:59:35,714 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 1050 transitions, 15180 flow [2023-11-17 11:59:35,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 9.151515151515152) internal successors, (302), 33 states have internal predecessors, (302), 0 states have call successors, (0), 0 states 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 11:59:35,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:59:35,715 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 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 11:59:35,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-17 11:59:35,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-17 11:59:35,916 INFO L420 AbstractCegarLoop]: === Iteration 40 === 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 11:59:35,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:59:35,917 INFO L85 PathProgramCache]: Analyzing trace with hash -2087876418, now seen corresponding path program 6 times [2023-11-17 11:59:35,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:59:35,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394816292] [2023-11-17 11:59:35,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:59:35,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:59:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:59:39,803 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 11:59:39,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:59:39,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394816292] [2023-11-17 11:59:39,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394816292] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:59:39,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872318659] [2023-11-17 11:59:39,804 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 11:59:39,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:59:39,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:59:39,806 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:59:39,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-17 11:59:40,281 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 11:59:40,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:59:40,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 73 conjunts are in the unsatisfiable core [2023-11-17 11:59:40,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:59:42,229 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:59:42,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 352 treesize of output 356 [2023-11-17 11:59:43,141 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 11:59:43,141 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:59:47,972 INFO L349 Elim1Store]: treesize reduction 13, result has 95.7 percent of original size [2023-11-17 11:59:47,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 357 treesize of output 570 [2023-11-17 11:59:50,075 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 11:59:50,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872318659] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:59:50,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:59:50,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 10] total 32 [2023-11-17 11:59:50,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126306285] [2023-11-17 11:59:50,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:59:50,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-17 11:59:50,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:59:50,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-17 11:59:50,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=938, Unknown=0, NotChecked=0, Total=1056 [2023-11-17 11:59:50,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 11:59:50,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 1050 transitions, 15180 flow. Second operand has 33 states, 33 states have (on average 9.151515151515152) internal successors, (302), 33 states have internal predecessors, (302), 0 states have call successors, (0), 0 states 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 11:59:50,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:59:50,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 11:59:50,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:59:57,672 INFO L124 PetriNetUnfolderBase]: 9347/14719 cut-off events. [2023-11-17 11:59:57,673 INFO L125 PetriNetUnfolderBase]: For 215209/215209 co-relation queries the response was YES. [2023-11-17 11:59:57,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102681 conditions, 14719 events. 9347/14719 cut-off events. For 215209/215209 co-relation queries the response was YES. Maximal size of possible extension queue 732. Compared 97147 event pairs, 1949 based on Foata normal form. 1/14507 useless extension candidates. Maximal degree in co-relation 102567. Up to 5831 conditions per place. [2023-11-17 11:59:57,871 INFO L140 encePairwiseOnDemand]: 63/76 looper letters, 902 selfloop transitions, 261 changer transitions 2/1165 dead transitions. [2023-11-17 11:59:57,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 1165 transitions, 18844 flow [2023-11-17 11:59:57,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 11:59:57,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 11:59:57,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 198 transitions. [2023-11-17 11:59:57,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.21710526315789475 [2023-11-17 11:59:57,872 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 198 transitions. [2023-11-17 11:59:57,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 198 transitions. [2023-11-17 11:59:57,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:59:57,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 198 transitions. [2023-11-17 11:59:57,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 16.5) internal successors, (198), 12 states have internal predecessors, (198), 0 states have call successors, (0), 0 states 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 11:59:57,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 76.0) internal successors, (988), 13 states have internal predecessors, (988), 0 states have call successors, (0), 0 states 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 11:59:57,874 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 76.0) internal successors, (988), 13 states have internal predecessors, (988), 0 states have call successors, (0), 0 states 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 11:59:57,874 INFO L175 Difference]: Start difference. First operand has 309 places, 1050 transitions, 15180 flow. Second operand 12 states and 198 transitions. [2023-11-17 11:59:57,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 1165 transitions, 18844 flow [2023-11-17 12:00:01,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 1165 transitions, 18436 flow, removed 18 selfloop flow, removed 7 redundant places. [2023-11-17 12:00:01,047 INFO L231 Difference]: Finished difference. Result has 315 places, 1056 transitions, 15446 flow [2023-11-17 12:00:01,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=14772, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1050, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=790, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15446, PETRI_PLACES=315, PETRI_TRANSITIONS=1056} [2023-11-17 12:00:01,048 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 283 predicate places. [2023-11-17 12:00:01,048 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 1056 transitions, 15446 flow [2023-11-17 12:00:01,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 9.151515151515152) internal successors, (302), 33 states have internal predecessors, (302), 0 states have call successors, (0), 0 states 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 12:00:01,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:00:01,049 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 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 12:00:01,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-17 12:00:01,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-17 12:00:01,257 INFO L420 AbstractCegarLoop]: === Iteration 41 === 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 12:00:01,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:00:01,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1026110120, now seen corresponding path program 7 times [2023-11-17 12:00:01,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:00:01,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780567971] [2023-11-17 12:00:01,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:00:01,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:00:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:00:06,043 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 12:00:06,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:00:06,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780567971] [2023-11-17 12:00:06,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780567971] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:00:06,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409876845] [2023-11-17 12:00:06,044 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 12:00:06,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:00:06,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:00:06,046 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:00:06,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-17 12:00:06,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:00:06,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 77 conjunts are in the unsatisfiable core [2023-11-17 12:00:06,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:00:08,493 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:00:08,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 389 treesize of output 361 [2023-11-17 12:00:09,869 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 12:00:09,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:00:16,021 INFO L349 Elim1Store]: treesize reduction 28, result has 90.8 percent of original size [2023-11-17 12:00:16,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 312 treesize of output 504 [2023-11-17 12:00:17,173 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 12:00:17,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409876845] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:00:17,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:00:17,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 10] total 32 [2023-11-17 12:00:17,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474116804] [2023-11-17 12:00:17,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:00:17,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-17 12:00:17,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:00:17,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-17 12:00:17,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2023-11-17 12:00:17,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 12:00:17,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 1056 transitions, 15446 flow. Second operand has 33 states, 33 states have (on average 9.151515151515152) internal successors, (302), 33 states have internal predecessors, (302), 0 states have call successors, (0), 0 states 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 12:00:17,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:00:17,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 12:00:17,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:00:44,433 INFO L124 PetriNetUnfolderBase]: 10468/16772 cut-off events. [2023-11-17 12:00:44,433 INFO L125 PetriNetUnfolderBase]: For 279795/279795 co-relation queries the response was YES. [2023-11-17 12:00:44,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120214 conditions, 16772 events. 10468/16772 cut-off events. For 279795/279795 co-relation queries the response was YES. Maximal size of possible extension queue 857. Compared 116760 event pairs, 1580 based on Foata normal form. 26/16581 useless extension candidates. Maximal degree in co-relation 120098. Up to 6696 conditions per place. [2023-11-17 12:00:44,694 INFO L140 encePairwiseOnDemand]: 61/76 looper letters, 663 selfloop transitions, 785 changer transitions 46/1494 dead transitions. [2023-11-17 12:00:44,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 1494 transitions, 23174 flow [2023-11-17 12:00:44,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-11-17 12:00:44,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2023-11-17 12:00:44,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 925 transitions. [2023-11-17 12:00:44,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.18440988835725677 [2023-11-17 12:00:44,697 INFO L72 ComplementDD]: Start complementDD. Operand 66 states and 925 transitions. [2023-11-17 12:00:44,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 925 transitions. [2023-11-17 12:00:44,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:00:44,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 66 states and 925 transitions. [2023-11-17 12:00:44,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 67 states, 66 states have (on average 14.015151515151516) internal successors, (925), 66 states have internal predecessors, (925), 0 states have call successors, (0), 0 states 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 12:00:44,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 67 states, 67 states have (on average 76.0) internal successors, (5092), 67 states have internal predecessors, (5092), 0 states have call successors, (0), 0 states 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 12:00:44,704 INFO L81 ComplementDD]: Finished complementDD. Result has 67 states, 67 states have (on average 76.0) internal successors, (5092), 67 states have internal predecessors, (5092), 0 states have call successors, (0), 0 states 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 12:00:44,704 INFO L175 Difference]: Start difference. First operand has 315 places, 1056 transitions, 15446 flow. Second operand 66 states and 925 transitions. [2023-11-17 12:00:44,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 1494 transitions, 23174 flow [2023-11-17 12:00:48,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 1494 transitions, 22623 flow, removed 65 selfloop flow, removed 5 redundant places. [2023-11-17 12:00:48,842 INFO L231 Difference]: Finished difference. Result has 400 places, 1201 transitions, 19343 flow [2023-11-17 12:00:48,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=15025, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1056, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=662, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=66, PETRI_FLOW=19343, PETRI_PLACES=400, PETRI_TRANSITIONS=1201} [2023-11-17 12:00:48,843 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 368 predicate places. [2023-11-17 12:00:48,843 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 1201 transitions, 19343 flow [2023-11-17 12:00:48,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 9.151515151515152) internal successors, (302), 33 states have internal predecessors, (302), 0 states have call successors, (0), 0 states 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 12:00:48,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:00:48,843 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 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 12:00:48,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-17 12:00:49,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-11-17 12:00:49,044 INFO L420 AbstractCegarLoop]: === Iteration 42 === 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 12:00:49,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:00:49,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1630393822, now seen corresponding path program 8 times [2023-11-17 12:00:49,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:00:49,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123629211] [2023-11-17 12:00:49,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:00:49,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:00:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:00:54,847 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 12:00:54,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:00:54,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123629211] [2023-11-17 12:00:54,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123629211] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:00:54,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767366795] [2023-11-17 12:00:54,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 12:00:54,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:00:54,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:00:54,853 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:00:54,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-17 12:00:55,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 12:00:55,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:00:55,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 73 conjunts are in the unsatisfiable core [2023-11-17 12:00:55,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:00:57,546 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:00:57,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 389 treesize of output 425 [2023-11-17 12:00:58,445 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 12:00:58,445 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:01:02,710 INFO L349 Elim1Store]: treesize reduction 13, result has 95.7 percent of original size [2023-11-17 12:01:02,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 344 treesize of output 553 [2023-11-17 12:01:04,993 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 12:01:04,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767366795] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:01:04,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:01:04,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 10] total 32 [2023-11-17 12:01:04,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395792465] [2023-11-17 12:01:04,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:01:04,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-17 12:01:04,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:01:04,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-17 12:01:04,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2023-11-17 12:01:04,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 12:01:04,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 1201 transitions, 19343 flow. Second operand has 33 states, 33 states have (on average 9.151515151515152) internal successors, (302), 33 states have internal predecessors, (302), 0 states have call successors, (0), 0 states 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 12:01:04,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:01:04,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 12:01:04,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:01:21,801 INFO L124 PetriNetUnfolderBase]: 11600/18553 cut-off events. [2023-11-17 12:01:21,801 INFO L125 PetriNetUnfolderBase]: For 511127/511127 co-relation queries the response was YES. [2023-11-17 12:01:22,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150375 conditions, 18553 events. 11600/18553 cut-off events. For 511127/511127 co-relation queries the response was YES. Maximal size of possible extension queue 953. Compared 130896 event pairs, 1979 based on Foata normal form. 5/18322 useless extension candidates. Maximal degree in co-relation 150234. Up to 7632 conditions per place. [2023-11-17 12:01:22,246 INFO L140 encePairwiseOnDemand]: 61/76 looper letters, 767 selfloop transitions, 826 changer transitions 3/1596 dead transitions. [2023-11-17 12:01:22,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 1596 transitions, 27667 flow [2023-11-17 12:01:22,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-11-17 12:01:22,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-11-17 12:01:22,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 730 transitions. [2023-11-17 12:01:22,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.19210526315789472 [2023-11-17 12:01:22,249 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 730 transitions. [2023-11-17 12:01:22,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 730 transitions. [2023-11-17 12:01:22,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:01:22,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 730 transitions. [2023-11-17 12:01:22,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 14.6) internal successors, (730), 50 states have internal predecessors, (730), 0 states have call successors, (0), 0 states 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 12:01:22,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 76.0) internal successors, (3876), 51 states have internal predecessors, (3876), 0 states have call successors, (0), 0 states 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 12:01:22,255 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 76.0) internal successors, (3876), 51 states have internal predecessors, (3876), 0 states have call successors, (0), 0 states 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 12:01:22,255 INFO L175 Difference]: Start difference. First operand has 400 places, 1201 transitions, 19343 flow. Second operand 50 states and 730 transitions. [2023-11-17 12:01:22,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 1596 transitions, 27667 flow [2023-11-17 12:01:30,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 1596 transitions, 25662 flow, removed 424 selfloop flow, removed 20 redundant places. [2023-11-17 12:01:30,962 INFO L231 Difference]: Finished difference. Result has 440 places, 1334 transitions, 21682 flow [2023-11-17 12:01:30,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=17521, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=709, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=21682, PETRI_PLACES=440, PETRI_TRANSITIONS=1334} [2023-11-17 12:01:30,963 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 408 predicate places. [2023-11-17 12:01:30,963 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 1334 transitions, 21682 flow [2023-11-17 12:01:30,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 9.151515151515152) internal successors, (302), 33 states have internal predecessors, (302), 0 states have call successors, (0), 0 states 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 12:01:30,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:01:30,964 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 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 12:01:30,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-17 12:01:31,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:01:31,165 INFO L420 AbstractCegarLoop]: === Iteration 43 === 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 12:01:31,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:01:31,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1694911554, now seen corresponding path program 9 times [2023-11-17 12:01:31,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:01:31,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437446660] [2023-11-17 12:01:31,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:01:31,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:01:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:01:35,186 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 12:01:35,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:01:35,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437446660] [2023-11-17 12:01:35,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437446660] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:01:35,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143434990] [2023-11-17 12:01:35,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 12:01:35,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:01:35,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:01:35,188 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:01:35,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-17 12:01:35,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 12:01:35,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:01:35,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 73 conjunts are in the unsatisfiable core [2023-11-17 12:01:35,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:01:37,678 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:01:37,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 403 treesize of output 483 [2023-11-17 12:01:38,825 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 12:01:38,825 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:01:43,283 INFO L349 Elim1Store]: treesize reduction 13, result has 96.6 percent of original size [2023-11-17 12:01:43,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 391 treesize of output 676 [2023-11-17 12:01:46,376 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 12:01:46,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143434990] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:01:46,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:01:46,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 10] total 33 [2023-11-17 12:01:46,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785620609] [2023-11-17 12:01:46,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:01:46,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-17 12:01:46,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:01:46,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-17 12:01:46,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=988, Unknown=0, NotChecked=0, Total=1122 [2023-11-17 12:01:46,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 12:01:46,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 1334 transitions, 21682 flow. Second operand has 34 states, 34 states have (on average 9.176470588235293) internal successors, (312), 34 states have internal predecessors, (312), 0 states have call successors, (0), 0 states 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 12:01:46,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:01:46,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 12:01:46,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:01:56,847 INFO L124 PetriNetUnfolderBase]: 11600/18552 cut-off events. [2023-11-17 12:01:56,847 INFO L125 PetriNetUnfolderBase]: For 550152/550152 co-relation queries the response was YES. [2023-11-17 12:01:57,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150858 conditions, 18552 events. 11600/18552 cut-off events. For 550152/550152 co-relation queries the response was YES. Maximal size of possible extension queue 955. Compared 130722 event pairs, 2578 based on Foata normal form. 1/18288 useless extension candidates. Maximal degree in co-relation 150710. Up to 7613 conditions per place. [2023-11-17 12:01:57,145 INFO L140 encePairwiseOnDemand]: 64/76 looper letters, 1103 selfloop transitions, 342 changer transitions 2/1447 dead transitions. [2023-11-17 12:01:57,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 1447 transitions, 26139 flow [2023-11-17 12:01:57,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 12:01:57,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 12:01:57,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 196 transitions. [2023-11-17 12:01:57,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2149122807017544 [2023-11-17 12:01:57,147 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 196 transitions. [2023-11-17 12:01:57,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 196 transitions. [2023-11-17 12:01:57,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:01:57,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 196 transitions. [2023-11-17 12:01:57,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 16.333333333333332) internal successors, (196), 12 states have internal predecessors, (196), 0 states have call successors, (0), 0 states 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 12:01:57,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 76.0) internal successors, (988), 13 states have internal predecessors, (988), 0 states have call successors, (0), 0 states 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 12:01:57,149 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 76.0) internal successors, (988), 13 states have internal predecessors, (988), 0 states have call successors, (0), 0 states 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 12:01:57,149 INFO L175 Difference]: Start difference. First operand has 440 places, 1334 transitions, 21682 flow. Second operand 12 states and 196 transitions. [2023-11-17 12:01:57,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 1447 transitions, 26139 flow [2023-11-17 12:02:04,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 1447 transitions, 24798 flow, removed 272 selfloop flow, removed 22 redundant places. [2023-11-17 12:02:04,793 INFO L231 Difference]: Finished difference. Result has 431 places, 1338 transitions, 21174 flow [2023-11-17 12:02:04,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=20381, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=338, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=992, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=21174, PETRI_PLACES=431, PETRI_TRANSITIONS=1338} [2023-11-17 12:02:04,795 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 399 predicate places. [2023-11-17 12:02:04,795 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 1338 transitions, 21174 flow [2023-11-17 12:02:04,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 9.176470588235293) internal successors, (312), 34 states have internal predecessors, (312), 0 states have call successors, (0), 0 states 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 12:02:04,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:02:04,795 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 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 12:02:04,802 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-17 12:02:04,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-11-17 12:02:04,996 INFO L420 AbstractCegarLoop]: === Iteration 44 === 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 12:02:04,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:02:04,996 INFO L85 PathProgramCache]: Analyzing trace with hash 803044790, now seen corresponding path program 10 times [2023-11-17 12:02:04,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:02:04,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705773788] [2023-11-17 12:02:04,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:02:04,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:02:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:02:09,330 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 12:02:09,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:02:09,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705773788] [2023-11-17 12:02:09,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705773788] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:02:09,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498552837] [2023-11-17 12:02:09,331 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 12:02:09,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:02:09,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:02:09,332 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:02:09,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-17 12:02:09,846 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 12:02:09,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:02:09,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 75 conjunts are in the unsatisfiable core [2023-11-17 12:02:09,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:02:12,024 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:02:12,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 320 treesize of output 304 [2023-11-17 12:02:12,934 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 12:02:12,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:02:18,548 INFO L349 Elim1Store]: treesize reduction 13, result has 95.7 percent of original size [2023-11-17 12:02:18,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 359 treesize of output 572 [2023-11-17 12:02:20,324 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 12:02:20,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498552837] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:02:20,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:02:20,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 10] total 32 [2023-11-17 12:02:20,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875752171] [2023-11-17 12:02:20,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:02:20,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-17 12:02:20,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:02:20,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-17 12:02:20,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2023-11-17 12:02:20,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 12:02:20,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 1338 transitions, 21174 flow. Second operand has 33 states, 33 states have (on average 9.151515151515152) internal successors, (302), 33 states have internal predecessors, (302), 0 states have call successors, (0), 0 states 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 12:02:20,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:02:20,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 12:02:20,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:02:35,034 INFO L124 PetriNetUnfolderBase]: 11692/18701 cut-off events. [2023-11-17 12:02:35,035 INFO L125 PetriNetUnfolderBase]: For 560699/560699 co-relation queries the response was YES. [2023-11-17 12:02:35,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151610 conditions, 18701 events. 11692/18701 cut-off events. For 560699/560699 co-relation queries the response was YES. Maximal size of possible extension queue 964. Compared 132055 event pairs, 2346 based on Foata normal form. 3/18468 useless extension candidates. Maximal degree in co-relation 151461. Up to 7440 conditions per place. [2023-11-17 12:02:35,369 INFO L140 encePairwiseOnDemand]: 63/76 looper letters, 909 selfloop transitions, 597 changer transitions 4/1510 dead transitions. [2023-11-17 12:02:35,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 1510 transitions, 26255 flow [2023-11-17 12:02:35,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-17 12:02:35,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-17 12:02:35,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 400 transitions. [2023-11-17 12:02:35,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.20242914979757085 [2023-11-17 12:02:35,371 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 400 transitions. [2023-11-17 12:02:35,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 400 transitions. [2023-11-17 12:02:35,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:02:35,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 400 transitions. [2023-11-17 12:02:35,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 15.384615384615385) internal successors, (400), 26 states have internal predecessors, (400), 0 states have call successors, (0), 0 states 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 12:02:35,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 76.0) internal successors, (2052), 27 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states 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 12:02:35,373 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 76.0) internal successors, (2052), 27 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states 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 12:02:35,373 INFO L175 Difference]: Start difference. First operand has 431 places, 1338 transitions, 21174 flow. Second operand 26 states and 400 transitions. [2023-11-17 12:02:35,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 1510 transitions, 26255 flow [2023-11-17 12:02:41,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 1510 transitions, 25765 flow, removed 8 selfloop flow, removed 7 redundant places. [2023-11-17 12:02:42,020 INFO L231 Difference]: Finished difference. Result has 454 places, 1355 transitions, 22270 flow [2023-11-17 12:02:42,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=20684, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=583, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=753, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=22270, PETRI_PLACES=454, PETRI_TRANSITIONS=1355} [2023-11-17 12:02:42,021 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 422 predicate places. [2023-11-17 12:02:42,021 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 1355 transitions, 22270 flow [2023-11-17 12:02:42,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 9.151515151515152) internal successors, (302), 33 states have internal predecessors, (302), 0 states have call successors, (0), 0 states 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 12:02:42,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:02:42,022 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 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 12:02:42,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-17 12:02:42,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:02:42,223 INFO L420 AbstractCegarLoop]: === Iteration 45 === 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 12:02:42,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:02:42,224 INFO L85 PathProgramCache]: Analyzing trace with hash -724785792, now seen corresponding path program 11 times [2023-11-17 12:02:42,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:02:42,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746880972] [2023-11-17 12:02:42,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:02:42,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:02:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:02:47,363 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 12:02:47,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:02:47,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746880972] [2023-11-17 12:02:47,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746880972] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:02:47,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880304594] [2023-11-17 12:02:47,364 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 12:02:47,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:02:47,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:02:47,365 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:02:47,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-17 12:02:47,975 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-17 12:02:47,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:02:47,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 79 conjunts are in the unsatisfiable core [2023-11-17 12:02:47,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:02:50,275 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:02:50,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 429 treesize of output 421 [2023-11-17 12:02:51,838 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 12:02:51,838 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:02:58,361 INFO L349 Elim1Store]: treesize reduction 28, result has 83.4 percent of original size [2023-11-17 12:02:58,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 263 treesize of output 343 [2023-11-17 12:02:59,510 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-17 12:02:59,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880304594] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:02:59,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:02:59,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 10] total 32 [2023-11-17 12:02:59,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066667726] [2023-11-17 12:02:59,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:02:59,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-17 12:02:59,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:02:59,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-17 12:02:59,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=924, Unknown=0, NotChecked=0, Total=1056 [2023-11-17 12:02:59,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 76 [2023-11-17 12:02:59,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 1355 transitions, 22270 flow. Second operand has 33 states, 33 states have (on average 9.151515151515152) internal successors, (302), 33 states have internal predecessors, (302), 0 states have call successors, (0), 0 states 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 12:02:59,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:02:59,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 76 [2023-11-17 12:02:59,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:03:15,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] Received shutdown request... [2023-11-17 12:03:27,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-11-17 12:03:27,460 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 12:03:27,474 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 12:03:27,474 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 12:03:27,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-17 12:03:27,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:03:27,669 WARN L619 AbstractCegarLoop]: Verification canceled: while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 99 known predicates. [2023-11-17 12:03:27,671 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 12:03:27,671 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 12:03:27,671 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 12:03:27,671 INFO L445 BasicCegarLoop]: Path program histogram: [11, 8, 6, 6, 6, 2, 2, 1, 1, 1, 1] [2023-11-17 12:03:27,674 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 12:03:27,674 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 12:03:27,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 12:03:27 BasicIcfg [2023-11-17 12:03:27,676 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 12:03:27,677 INFO L158 Benchmark]: Toolchain (without parser) took 474642.20ms. Allocated memory was 177.2MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 128.4MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. [2023-11-17 12:03:27,677 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 177.2MB. Free memory is still 129.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 12:03:27,677 INFO L158 Benchmark]: CACSL2BoogieTranslator took 287.46ms. Allocated memory is still 177.2MB. Free memory was 128.0MB in the beginning and 113.2MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-11-17 12:03:27,677 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.83ms. Allocated memory is still 177.2MB. Free memory was 113.2MB in the beginning and 108.8MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-11-17 12:03:27,677 INFO L158 Benchmark]: Boogie Preprocessor took 47.03ms. Allocated memory is still 177.2MB. Free memory was 108.8MB in the beginning and 105.6MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 12:03:27,677 INFO L158 Benchmark]: RCFGBuilder took 1718.92ms. Allocated memory was 177.2MB in the beginning and 245.4MB in the end (delta: 68.2MB). Free memory was 105.3MB in the beginning and 129.9MB in the end (delta: -24.7MB). Peak memory consumption was 107.5MB. Max. memory is 8.0GB. [2023-11-17 12:03:27,678 INFO L158 Benchmark]: TraceAbstraction took 472519.75ms. Allocated memory was 245.4MB in the beginning and 3.4GB in the end (delta: 3.1GB). Free memory was 128.9MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 933.4MB. Max. memory is 8.0GB. [2023-11-17 12:03:27,678 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 177.2MB. Free memory is still 129.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 287.46ms. Allocated memory is still 177.2MB. Free memory was 128.0MB in the beginning and 113.2MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 61.83ms. Allocated memory is still 177.2MB. Free memory was 113.2MB in the beginning and 108.8MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 47.03ms. Allocated memory is still 177.2MB. Free memory was 108.8MB in the beginning and 105.6MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 1718.92ms. Allocated memory was 177.2MB in the beginning and 245.4MB in the end (delta: 68.2MB). Free memory was 105.3MB in the beginning and 129.9MB in the end (delta: -24.7MB). Peak memory consumption was 107.5MB. Max. memory is 8.0GB. * TraceAbstraction took 472519.75ms. Allocated memory was 245.4MB in the beginning and 3.4GB in the end (delta: 3.1GB). Free memory was 128.9MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 933.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.3s, 45 PlacesBefore, 32 PlacesAfterwards, 47 TransitionsBefore, 31 TransitionsAfterwards, 756 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 3 ChoiceCompositions, 25 TotalNumberOfCompositions, 675 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 628, independent: 622, independent conditional: 0, independent unconditional: 622, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 401, independent: 397, independent conditional: 0, independent unconditional: 397, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 401, independent: 397, independent conditional: 0, independent unconditional: 397, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 126, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 126, dependent conditional: 0, dependent unconditional: 126, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 628, independent: 225, independent conditional: 0, independent unconditional: 225, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 401, unknown conditional: 0, unknown unconditional: 401] , Statistics on independence cache: Total cache size (in pairs): 38, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 164]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 99 known predicates. - TimeoutResultAtElement [Line: 157]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 99 known predicates. - TimeoutResultAtElement [Line: 156]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 99 known predicates. - TimeoutResultAtElement [Line: 158]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 99 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 64 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 472.3s, OverallIterations: 45, TraceHistogramMax: 5, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 228.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 11.4s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 4089 SdHoareTripleChecker+Valid, 40.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4089 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 37.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 645 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30866 IncrementalHoareTripleChecker+Invalid, 31512 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 645 mSolverCounterUnsat, 0 mSDtfsCounter, 30866 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1981 GetRequests, 1150 SyntacticMatches, 0 SemanticMatches, 830 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13538 ImplicationChecksByTransitivity, 79.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22270occurred in iteration=44, InterpolantAutomatonStates: 482, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 5.4s SatisfiabilityAnalysisTime, 217.7s InterpolantComputationTime, 2177 NumberOfCodeBlocks, 2129 NumberOfCodeBlocksAsserted, 75 NumberOfCheckSat, 2597 ConstructedInterpolants, 75 QuantifiedInterpolants, 54824 SizeOfPredicates, 683 NumberOfNonLiveVariables, 6060 ConjunctsInSsa, 843 ConjunctsInUnsatCore, 73 InterpolantComputations, 32 PerfectInterpolantSequences, 2977/3129 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown