/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:20:23,558 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:20:23,608 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 15:20:23,658 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:20:23,658 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:20:23,659 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:20:23,659 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:20:23,659 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:20:23,660 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:20:23,664 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:20:23,665 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:20:23,665 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:20:23,665 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:20:23,666 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:20:23,667 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:20:23,667 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:20:23,667 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:20:23,667 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:20:23,667 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:20:23,667 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:20:23,667 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:20:23,668 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:20:23,668 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:20:23,668 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:20:23,668 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:20:23,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:20:23,669 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:20:23,669 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:20:23,669 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:20:23,669 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:20:23,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:20:23,670 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:20:23,670 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:20:23,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:20:23,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:20:23,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:20:23,875 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:20:23,876 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:20:23,877 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i [2023-11-17 15:20:24,993 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:20:25,256 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:20:25,257 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i [2023-11-17 15:20:25,280 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eafe7f6ce/e57fa69e94aa4ba48db1717f54db8e10/FLAG82c68b4e9 [2023-11-17 15:20:25,291 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eafe7f6ce/e57fa69e94aa4ba48db1717f54db8e10 [2023-11-17 15:20:25,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:20:25,294 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:20:25,295 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:20:25,295 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:20:25,298 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:20:25,299 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:20:25" (1/1) ... [2023-11-17 15:20:25,300 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@102fd593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:20:25, skipping insertion in model container [2023-11-17 15:20:25,300 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:20:25" (1/1) ... [2023-11-17 15:20:25,336 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:20:25,759 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i[76084,76097] [2023-11-17 15:20:25,788 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:20:25,794 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:20:25,826 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i[76084,76097] [2023-11-17 15:20:25,833 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:20:25,939 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:20:25,939 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:20:25 WrapperNode [2023-11-17 15:20:25,939 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:20:25,940 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:20:25,940 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:20:25,940 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:20:25,945 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:20:25" (1/1) ... [2023-11-17 15:20:25,980 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:20:25" (1/1) ... [2023-11-17 15:20:26,000 INFO L138 Inliner]: procedures = 483, calls = 47, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 135 [2023-11-17 15:20:26,001 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:20:26,001 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:20:26,001 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:20:26,001 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:20:26,008 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:20:25" (1/1) ... [2023-11-17 15:20:26,008 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:20:25" (1/1) ... [2023-11-17 15:20:26,011 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:20:25" (1/1) ... [2023-11-17 15:20:26,011 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:20:25" (1/1) ... [2023-11-17 15:20:26,021 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:20:25" (1/1) ... [2023-11-17 15:20:26,023 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:20:25" (1/1) ... [2023-11-17 15:20:26,026 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:20:25" (1/1) ... [2023-11-17 15:20:26,027 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:20:25" (1/1) ... [2023-11-17 15:20:26,031 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:20:26,032 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:20:26,032 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:20:26,032 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:20:26,033 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:20:25" (1/1) ... [2023-11-17 15:20:26,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:20:26,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:20:26,059 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 15:20:26,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 15:20:26,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:20:26,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 15:20:26,082 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-17 15:20:26,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:20:26,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-17 15:20:26,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:20:26,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:20:26,082 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-11-17 15:20:26,082 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-11-17 15:20:26,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:20:26,082 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-17 15:20:26,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:20:26,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:20:26,084 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 15:20:26,266 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:20:26,268 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:20:26,457 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:20:26,472 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:20:26,472 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 15:20:26,474 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:20:26 BoogieIcfgContainer [2023-11-17 15:20:26,474 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:20:26,475 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:20:26,475 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:20:26,478 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:20:26,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:20:25" (1/3) ... [2023-11-17 15:20:26,478 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@763758b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:20:26, skipping insertion in model container [2023-11-17 15:20:26,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:20:25" (2/3) ... [2023-11-17 15:20:26,478 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@763758b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:20:26, skipping insertion in model container [2023-11-17 15:20:26,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:20:26" (3/3) ... [2023-11-17 15:20:26,479 INFO L112 eAbstractionObserver]: Analyzing ICFG race-3_1-container_of-global.i [2023-11-17 15:20:26,492 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:20:26,493 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-17 15:20:26,493 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:20:26,569 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 15:20:26,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 198 transitions, 410 flow [2023-11-17 15:20:26,707 INFO L124 PetriNetUnfolderBase]: 10/244 cut-off events. [2023-11-17 15:20:26,707 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 15:20:26,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 244 events. 10/244 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 441 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 140. Up to 4 conditions per place. [2023-11-17 15:20:26,714 INFO L82 GeneralOperation]: Start removeDead. Operand has 196 places, 198 transitions, 410 flow [2023-11-17 15:20:26,729 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 182 transitions, 376 flow [2023-11-17 15:20:26,732 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:20:26,751 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 182 places, 182 transitions, 376 flow [2023-11-17 15:20:26,753 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 182 places, 182 transitions, 376 flow [2023-11-17 15:20:26,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 182 transitions, 376 flow [2023-11-17 15:20:26,804 INFO L124 PetriNetUnfolderBase]: 7/217 cut-off events. [2023-11-17 15:20:26,804 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 15:20:26,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 217 events. 7/217 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 361 event pairs, 0 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 126. Up to 4 conditions per place. [2023-11-17 15:20:26,809 INFO L119 LiptonReduction]: Number of co-enabled transitions 3536 [2023-11-17 15:21:12,093 INFO L134 LiptonReduction]: Checked pairs total: 6763 [2023-11-17 15:21:12,093 INFO L136 LiptonReduction]: Total number of compositions: 201 [2023-11-17 15:21:12,127 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:21:12,132 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;@1c39f0a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:21:12,132 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-17 15:21:12,133 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:21:12,133 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-17 15:21:12,133 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:21:12,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:21:12,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-17 15:21:12,134 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 15:21:12,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:21:12,141 INFO L85 PathProgramCache]: Analyzing trace with hash 682, now seen corresponding path program 1 times [2023-11-17 15:21:12,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:21:12,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543963234] [2023-11-17 15:21:12,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:21:12,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:21:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:21:12,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:21:12,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:21:12,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543963234] [2023-11-17 15:21:12,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543963234] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:21:12,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:21:12,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-17 15:21:12,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946513795] [2023-11-17 15:21:12,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:21:12,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-17 15:21:12,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:21:12,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-17 15:21:12,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-17 15:21:12,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 399 [2023-11-17 15:21:12,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 178.5) internal successors, (357), 2 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:12,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:21:12,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 399 [2023-11-17 15:21:12,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:21:12,482 INFO L124 PetriNetUnfolderBase]: 277/523 cut-off events. [2023-11-17 15:21:12,483 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-17 15:21:12,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1032 conditions, 523 events. 277/523 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2421 event pairs, 276 based on Foata normal form. 0/466 useless extension candidates. Maximal degree in co-relation 941. Up to 488 conditions per place. [2023-11-17 15:21:12,489 INFO L140 encePairwiseOnDemand]: 396/399 looper letters, 26 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2023-11-17 15:21:12,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 122 flow [2023-11-17 15:21:12,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 15:21:12,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-17 15:21:12,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 385 transitions. [2023-11-17 15:21:12,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2023-11-17 15:21:12,507 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 385 transitions. [2023-11-17 15:21:12,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 385 transitions. [2023-11-17 15:21:12,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:21:12,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 385 transitions. [2023-11-17 15:21:12,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 192.5) internal successors, (385), 2 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 15:21:12,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 399.0) internal successors, (1197), 3 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:12,524 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 399.0) internal successors, (1197), 3 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:12,525 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 76 flow. Second operand 2 states and 385 transitions. [2023-11-17 15:21:12,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 122 flow [2023-11-17 15:21:12,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 114 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 15:21:12,530 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 62 flow [2023-11-17 15:21:12,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=62, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2023-11-17 15:21:12,535 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2023-11-17 15:21:12,536 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 62 flow [2023-11-17 15:21:12,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 178.5) internal successors, (357), 2 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:12,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:21:12,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-17 15:21:12,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:21:12,537 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 15:21:12,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:21:12,537 INFO L85 PathProgramCache]: Analyzing trace with hash 21126263, now seen corresponding path program 1 times [2023-11-17 15:21:12,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:21:12,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229623903] [2023-11-17 15:21:12,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:21:12,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:21:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:21:12,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:21:12,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:21:12,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229623903] [2023-11-17 15:21:12,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229623903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:21:12,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:21:12,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:21:12,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875702234] [2023-11-17 15:21:12,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:21:12,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:21:12,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:21:12,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:21:12,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:21:12,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 399 [2023-11-17 15:21:12,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:12,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:21:12,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 399 [2023-11-17 15:21:12,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:21:13,018 INFO L124 PetriNetUnfolderBase]: 639/1091 cut-off events. [2023-11-17 15:21:13,018 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 15:21:13,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2192 conditions, 1091 events. 639/1091 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5131 event pairs, 306 based on Foata normal form. 0/1019 useless extension candidates. Maximal degree in co-relation 2189. Up to 767 conditions per place. [2023-11-17 15:21:13,022 INFO L140 encePairwiseOnDemand]: 391/399 looper letters, 35 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2023-11-17 15:21:13,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 42 transitions, 172 flow [2023-11-17 15:21:13,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:21:13,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:21:13,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 475 transitions. [2023-11-17 15:21:13,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968253968253968 [2023-11-17 15:21:13,026 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 475 transitions. [2023-11-17 15:21:13,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 475 transitions. [2023-11-17 15:21:13,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:21:13,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 475 transitions. [2023-11-17 15:21:13,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:13,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:13,032 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:13,032 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 62 flow. Second operand 3 states and 475 transitions. [2023-11-17 15:21:13,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 42 transitions, 172 flow [2023-11-17 15:21:13,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 42 transitions, 172 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 15:21:13,034 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 112 flow [2023-11-17 15:21:13,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2023-11-17 15:21:13,034 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2023-11-17 15:21:13,035 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 112 flow [2023-11-17 15:21:13,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:13,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:21:13,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-17 15:21:13,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:21:13,036 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 15:21:13,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:21:13,039 INFO L85 PathProgramCache]: Analyzing trace with hash 654914672, now seen corresponding path program 1 times [2023-11-17 15:21:13,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:21:13,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544266771] [2023-11-17 15:21:13,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:21:13,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:21:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:21:13,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:21:13,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:21:13,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544266771] [2023-11-17 15:21:13,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544266771] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:21:13,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:21:13,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:21:13,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521884170] [2023-11-17 15:21:13,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:21:13,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:21:13,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:21:13,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:21:13,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:21:13,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 399 [2023-11-17 15:21:13,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:13,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:21:13,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 399 [2023-11-17 15:21:13,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:21:13,426 INFO L124 PetriNetUnfolderBase]: 755/1298 cut-off events. [2023-11-17 15:21:13,426 INFO L125 PetriNetUnfolderBase]: For 478/478 co-relation queries the response was YES. [2023-11-17 15:21:13,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3359 conditions, 1298 events. 755/1298 cut-off events. For 478/478 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6431 event pairs, 422 based on Foata normal form. 37/1333 useless extension candidates. Maximal degree in co-relation 3354. Up to 992 conditions per place. [2023-11-17 15:21:13,433 INFO L140 encePairwiseOnDemand]: 392/399 looper letters, 39 selfloop transitions, 9 changer transitions 2/50 dead transitions. [2023-11-17 15:21:13,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 50 transitions, 274 flow [2023-11-17 15:21:13,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:21:13,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:21:13,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 474 transitions. [2023-11-17 15:21:13,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39598997493734334 [2023-11-17 15:21:13,435 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 474 transitions. [2023-11-17 15:21:13,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 474 transitions. [2023-11-17 15:21:13,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:21:13,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 474 transitions. [2023-11-17 15:21:13,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:13,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:13,439 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:13,439 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 112 flow. Second operand 3 states and 474 transitions. [2023-11-17 15:21:13,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 50 transitions, 274 flow [2023-11-17 15:21:13,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 50 transitions, 250 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 15:21:13,445 INFO L231 Difference]: Finished difference. Result has 36 places, 40 transitions, 169 flow [2023-11-17 15:21:13,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=36, PETRI_TRANSITIONS=40} [2023-11-17 15:21:13,447 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-11-17 15:21:13,447 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 40 transitions, 169 flow [2023-11-17 15:21:13,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:13,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:21:13,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:21:13,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 15:21:13,448 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 15:21:13,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:21:13,449 INFO L85 PathProgramCache]: Analyzing trace with hash 2053758013, now seen corresponding path program 1 times [2023-11-17 15:21:13,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:21:13,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375506636] [2023-11-17 15:21:13,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:21:13,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:21:13,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:21:13,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:21:13,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:21:13,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375506636] [2023-11-17 15:21:13,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375506636] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:21:13,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:21:13,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:21:13,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704026112] [2023-11-17 15:21:13,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:21:13,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:21:13,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:21:13,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:21:13,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:21:13,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 399 [2023-11-17 15:21:13,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 40 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:13,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:21:13,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 399 [2023-11-17 15:21:13,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:21:13,608 INFO L124 PetriNetUnfolderBase]: 116/227 cut-off events. [2023-11-17 15:21:13,608 INFO L125 PetriNetUnfolderBase]: For 186/186 co-relation queries the response was YES. [2023-11-17 15:21:13,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 599 conditions, 227 events. 116/227 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 850 event pairs, 24 based on Foata normal form. 25/250 useless extension candidates. Maximal degree in co-relation 593. Up to 160 conditions per place. [2023-11-17 15:21:13,609 INFO L140 encePairwiseOnDemand]: 397/399 looper letters, 27 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2023-11-17 15:21:13,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 30 transitions, 152 flow [2023-11-17 15:21:13,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:21:13,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:21:13,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 542 transitions. [2023-11-17 15:21:13,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527986633249791 [2023-11-17 15:21:13,611 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 542 transitions. [2023-11-17 15:21:13,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 542 transitions. [2023-11-17 15:21:13,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:21:13,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 542 transitions. [2023-11-17 15:21:13,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:13,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:13,615 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:13,615 INFO L175 Difference]: Start difference. First operand has 36 places, 40 transitions, 169 flow. Second operand 3 states and 542 transitions. [2023-11-17 15:21:13,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 30 transitions, 152 flow [2023-11-17 15:21:13,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 30 transitions, 136 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-11-17 15:21:13,616 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 58 flow [2023-11-17 15:21:13,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2023-11-17 15:21:13,616 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2023-11-17 15:21:13,616 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 58 flow [2023-11-17 15:21:13,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:13,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:21:13,617 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] [2023-11-17 15:21:13,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 15:21:13,617 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 15:21:13,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:21:13,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1432051615, now seen corresponding path program 1 times [2023-11-17 15:21:13,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:21:13,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668419272] [2023-11-17 15:21:13,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:21:13,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:21:13,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:21:14,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:21:14,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:21:14,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668419272] [2023-11-17 15:21:14,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668419272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:21:14,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:21:14,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:21:14,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546185979] [2023-11-17 15:21:14,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:21:14,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:21:14,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:21:14,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:21:14,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:21:14,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 399 [2023-11-17 15:21:14,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:14,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:21:14,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 399 [2023-11-17 15:21:14,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:21:14,133 INFO L124 PetriNetUnfolderBase]: 136/275 cut-off events. [2023-11-17 15:21:14,133 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2023-11-17 15:21:14,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 673 conditions, 275 events. 136/275 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1055 event pairs, 52 based on Foata normal form. 12/286 useless extension candidates. Maximal degree in co-relation 667. Up to 140 conditions per place. [2023-11-17 15:21:14,135 INFO L140 encePairwiseOnDemand]: 395/399 looper letters, 29 selfloop transitions, 3 changer transitions 0/33 dead transitions. [2023-11-17 15:21:14,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 33 transitions, 155 flow [2023-11-17 15:21:14,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:21:14,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:21:14,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 537 transitions. [2023-11-17 15:21:14,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44862155388471175 [2023-11-17 15:21:14,141 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 537 transitions. [2023-11-17 15:21:14,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 537 transitions. [2023-11-17 15:21:14,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:21:14,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 537 transitions. [2023-11-17 15:21:14,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:14,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:14,144 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:14,144 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 58 flow. Second operand 3 states and 537 transitions. [2023-11-17 15:21:14,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 33 transitions, 155 flow [2023-11-17 15:21:14,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 33 transitions, 153 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:21:14,147 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 76 flow [2023-11-17 15:21:14,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2023-11-17 15:21:14,149 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2023-11-17 15:21:14,149 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 76 flow [2023-11-17 15:21:14,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:14,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:21:14,149 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] [2023-11-17 15:21:14,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 15:21:14,150 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 15:21:14,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:21:14,150 INFO L85 PathProgramCache]: Analyzing trace with hash -806617385, now seen corresponding path program 2 times [2023-11-17 15:21:14,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:21:14,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884122417] [2023-11-17 15:21:14,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:21:14,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:21:14,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:21:14,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:21:14,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:21:14,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884122417] [2023-11-17 15:21:14,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884122417] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:21:14,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:21:14,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:21:14,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942204313] [2023-11-17 15:21:14,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:21:14,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:21:14,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:21:14,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:21:14,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:21:14,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 399 [2023-11-17 15:21:14,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:14,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:21:14,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 399 [2023-11-17 15:21:14,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:21:14,626 INFO L124 PetriNetUnfolderBase]: 60/151 cut-off events. [2023-11-17 15:21:14,626 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-11-17 15:21:14,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 151 events. 60/151 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 471 event pairs, 32 based on Foata normal form. 12/161 useless extension candidates. Maximal degree in co-relation 397. Up to 83 conditions per place. [2023-11-17 15:21:14,627 INFO L140 encePairwiseOnDemand]: 396/399 looper letters, 24 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2023-11-17 15:21:14,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 27 transitions, 131 flow [2023-11-17 15:21:14,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:21:14,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:21:14,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 531 transitions. [2023-11-17 15:21:14,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44360902255639095 [2023-11-17 15:21:14,629 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 531 transitions. [2023-11-17 15:21:14,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 531 transitions. [2023-11-17 15:21:14,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:21:14,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 531 transitions. [2023-11-17 15:21:14,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:14,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:14,633 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:14,633 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 76 flow. Second operand 3 states and 531 transitions. [2023-11-17 15:21:14,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 27 transitions, 131 flow [2023-11-17 15:21:14,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 117 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-11-17 15:21:14,634 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 61 flow [2023-11-17 15:21:14,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=61, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2023-11-17 15:21:14,635 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2023-11-17 15:21:14,635 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 61 flow [2023-11-17 15:21:14,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:14,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:21:14,635 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] [2023-11-17 15:21:14,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 15:21:14,636 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 15:21:14,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:21:14,636 INFO L85 PathProgramCache]: Analyzing trace with hash -735755567, now seen corresponding path program 3 times [2023-11-17 15:21:14,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:21:14,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683727123] [2023-11-17 15:21:14,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:21:14,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:21:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:21:16,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:21:16,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:21:16,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683727123] [2023-11-17 15:21:16,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683727123] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:21:16,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:21:16,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-17 15:21:16,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991233473] [2023-11-17 15:21:16,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:21:16,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:21:16,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:21:16,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:21:16,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:21:16,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 399 [2023-11-17 15:21:16,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 61 flow. Second operand has 15 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:16,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:21:16,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 399 [2023-11-17 15:21:16,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:21:16,713 INFO L124 PetriNetUnfolderBase]: 109/262 cut-off events. [2023-11-17 15:21:16,713 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2023-11-17 15:21:16,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 646 conditions, 262 events. 109/262 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1006 event pairs, 17 based on Foata normal form. 0/261 useless extension candidates. Maximal degree in co-relation 639. Up to 130 conditions per place. [2023-11-17 15:21:16,715 INFO L140 encePairwiseOnDemand]: 385/399 looper letters, 62 selfloop transitions, 15 changer transitions 0/77 dead transitions. [2023-11-17 15:21:16,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 77 transitions, 364 flow [2023-11-17 15:21:16,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 15:21:16,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 15:21:16,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1431 transitions. [2023-11-17 15:21:16,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32604237867395763 [2023-11-17 15:21:16,719 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1431 transitions. [2023-11-17 15:21:16,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1431 transitions. [2023-11-17 15:21:16,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:21:16,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1431 transitions. [2023-11-17 15:21:16,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 130.0909090909091) internal successors, (1431), 11 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:16,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 399.0) internal successors, (4788), 12 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:16,727 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 399.0) internal successors, (4788), 12 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:16,727 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 61 flow. Second operand 11 states and 1431 transitions. [2023-11-17 15:21:16,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 77 transitions, 364 flow [2023-11-17 15:21:16,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 77 transitions, 352 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 15:21:16,729 INFO L231 Difference]: Finished difference. Result has 48 places, 36 transitions, 168 flow [2023-11-17 15:21:16,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=168, PETRI_PLACES=48, PETRI_TRANSITIONS=36} [2023-11-17 15:21:16,729 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 12 predicate places. [2023-11-17 15:21:16,730 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 36 transitions, 168 flow [2023-11-17 15:21:16,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:16,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:21:16,731 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] [2023-11-17 15:21:16,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 15:21:16,731 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 15:21:16,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:21:16,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1643073586, now seen corresponding path program 1 times [2023-11-17 15:21:16,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:21:16,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582652659] [2023-11-17 15:21:16,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:21:16,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:21:16,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:21:17,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:21:17,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:21:17,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582652659] [2023-11-17 15:21:17,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582652659] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:21:17,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:21:17,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 15:21:17,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495114981] [2023-11-17 15:21:17,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:21:17,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 15:21:17,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:21:17,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 15:21:17,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 15:21:17,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 399 [2023-11-17 15:21:17,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 36 transitions, 168 flow. Second operand has 7 states, 7 states have (on average 131.0) internal successors, (917), 7 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:17,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:21:17,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 399 [2023-11-17 15:21:17,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:21:17,404 INFO L124 PetriNetUnfolderBase]: 121/309 cut-off events. [2023-11-17 15:21:17,405 INFO L125 PetriNetUnfolderBase]: For 267/267 co-relation queries the response was YES. [2023-11-17 15:21:17,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 969 conditions, 309 events. 121/309 cut-off events. For 267/267 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1363 event pairs, 33 based on Foata normal form. 1/308 useless extension candidates. Maximal degree in co-relation 954. Up to 107 conditions per place. [2023-11-17 15:21:17,406 INFO L140 encePairwiseOnDemand]: 392/399 looper letters, 59 selfloop transitions, 12 changer transitions 3/74 dead transitions. [2023-11-17 15:21:17,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 74 transitions, 480 flow [2023-11-17 15:21:17,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:21:17,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:21:17,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 821 transitions. [2023-11-17 15:21:17,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3429406850459482 [2023-11-17 15:21:17,409 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 821 transitions. [2023-11-17 15:21:17,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 821 transitions. [2023-11-17 15:21:17,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:21:17,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 821 transitions. [2023-11-17 15:21:17,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 136.83333333333334) internal successors, (821), 6 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:17,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:17,414 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:17,414 INFO L175 Difference]: Start difference. First operand has 48 places, 36 transitions, 168 flow. Second operand 6 states and 821 transitions. [2023-11-17 15:21:17,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 74 transitions, 480 flow [2023-11-17 15:21:17,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 74 transitions, 480 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 15:21:17,418 INFO L231 Difference]: Finished difference. Result has 56 places, 39 transitions, 223 flow [2023-11-17 15:21:17,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=223, PETRI_PLACES=56, PETRI_TRANSITIONS=39} [2023-11-17 15:21:17,419 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 20 predicate places. [2023-11-17 15:21:17,419 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 39 transitions, 223 flow [2023-11-17 15:21:17,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 131.0) internal successors, (917), 7 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:17,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:21:17,421 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] [2023-11-17 15:21:17,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 15:21:17,421 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 15:21:17,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:21:17,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1941707533, now seen corresponding path program 4 times [2023-11-17 15:21:17,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:21:17,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621694325] [2023-11-17 15:21:17,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:21:17,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:21:17,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:21:18,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:21:18,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:21:18,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621694325] [2023-11-17 15:21:18,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621694325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:21:18,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:21:18,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-17 15:21:18,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054084448] [2023-11-17 15:21:18,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:21:18,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:21:18,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:21:18,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:21:18,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:21:18,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 399 [2023-11-17 15:21:18,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 39 transitions, 223 flow. Second operand has 15 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:18,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:21:18,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 399 [2023-11-17 15:21:18,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:21:19,233 INFO L124 PetriNetUnfolderBase]: 120/314 cut-off events. [2023-11-17 15:21:19,233 INFO L125 PetriNetUnfolderBase]: For 500/500 co-relation queries the response was YES. [2023-11-17 15:21:19,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1091 conditions, 314 events. 120/314 cut-off events. For 500/500 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1392 event pairs, 45 based on Foata normal form. 1/313 useless extension candidates. Maximal degree in co-relation 1072. Up to 236 conditions per place. [2023-11-17 15:21:19,234 INFO L140 encePairwiseOnDemand]: 388/399 looper letters, 48 selfloop transitions, 7 changer transitions 22/77 dead transitions. [2023-11-17 15:21:19,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 77 transitions, 547 flow [2023-11-17 15:21:19,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 15:21:19,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 15:21:19,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1418 transitions. [2023-11-17 15:21:19,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32308042834358625 [2023-11-17 15:21:19,239 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1418 transitions. [2023-11-17 15:21:19,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1418 transitions. [2023-11-17 15:21:19,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:21:19,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1418 transitions. [2023-11-17 15:21:19,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 128.9090909090909) internal successors, (1418), 11 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:19,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 399.0) internal successors, (4788), 12 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:19,247 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 399.0) internal successors, (4788), 12 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:19,250 INFO L175 Difference]: Start difference. First operand has 56 places, 39 transitions, 223 flow. Second operand 11 states and 1418 transitions. [2023-11-17 15:21:19,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 77 transitions, 547 flow [2023-11-17 15:21:19,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 77 transitions, 514 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-11-17 15:21:19,253 INFO L231 Difference]: Finished difference. Result has 64 places, 39 transitions, 226 flow [2023-11-17 15:21:19,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=226, PETRI_PLACES=64, PETRI_TRANSITIONS=39} [2023-11-17 15:21:19,253 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 28 predicate places. [2023-11-17 15:21:19,253 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 39 transitions, 226 flow [2023-11-17 15:21:19,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:19,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:21:19,256 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] [2023-11-17 15:21:19,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 15:21:19,257 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 15:21:19,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:21:19,258 INFO L85 PathProgramCache]: Analyzing trace with hash -2079277369, now seen corresponding path program 5 times [2023-11-17 15:21:19,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:21:19,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422384424] [2023-11-17 15:21:19,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:21:19,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:21:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:21:20,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:21:20,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:21:20,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422384424] [2023-11-17 15:21:20,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422384424] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:21:20,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:21:20,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-17 15:21:20,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707331666] [2023-11-17 15:21:20,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:21:20,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:21:20,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:21:20,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:21:20,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:21:20,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 399 [2023-11-17 15:21:20,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 39 transitions, 226 flow. Second operand has 15 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:20,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:21:20,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 399 [2023-11-17 15:21:20,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:21:20,856 INFO L124 PetriNetUnfolderBase]: 118/321 cut-off events. [2023-11-17 15:21:20,856 INFO L125 PetriNetUnfolderBase]: For 511/511 co-relation queries the response was YES. [2023-11-17 15:21:20,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1149 conditions, 321 events. 118/321 cut-off events. For 511/511 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1445 event pairs, 29 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 1127. Up to 188 conditions per place. [2023-11-17 15:21:20,858 INFO L140 encePairwiseOnDemand]: 385/399 looper letters, 67 selfloop transitions, 26 changer transitions 2/95 dead transitions. [2023-11-17 15:21:20,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 95 transitions, 673 flow [2023-11-17 15:21:20,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 15:21:20,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 15:21:20,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1555 transitions. [2023-11-17 15:21:20,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3247702589807853 [2023-11-17 15:21:20,864 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1555 transitions. [2023-11-17 15:21:20,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1555 transitions. [2023-11-17 15:21:20,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:21:20,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1555 transitions. [2023-11-17 15:21:20,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 129.58333333333334) internal successors, (1555), 12 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:20,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 399.0) internal successors, (5187), 13 states have internal predecessors, (5187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:20,873 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 399.0) internal successors, (5187), 13 states have internal predecessors, (5187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:20,873 INFO L175 Difference]: Start difference. First operand has 64 places, 39 transitions, 226 flow. Second operand 12 states and 1555 transitions. [2023-11-17 15:21:20,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 95 transitions, 673 flow [2023-11-17 15:21:20,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 95 transitions, 639 flow, removed 10 selfloop flow, removed 9 redundant places. [2023-11-17 15:21:20,878 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 388 flow [2023-11-17 15:21:20,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=388, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2023-11-17 15:21:20,879 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 30 predicate places. [2023-11-17 15:21:20,879 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 388 flow [2023-11-17 15:21:20,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:20,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:21:20,880 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] [2023-11-17 15:21:20,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 15:21:20,880 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 15:21:20,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:21:20,881 INFO L85 PathProgramCache]: Analyzing trace with hash -896021461, now seen corresponding path program 6 times [2023-11-17 15:21:20,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:21:20,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779070678] [2023-11-17 15:21:20,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:21:20,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:21:20,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:21:22,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:21:22,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:21:22,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779070678] [2023-11-17 15:21:22,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779070678] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:21:22,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:21:22,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-17 15:21:22,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594229379] [2023-11-17 15:21:22,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:21:22,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:21:22,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:21:22,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:21:22,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:21:22,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 399 [2023-11-17 15:21:22,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 388 flow. Second operand has 15 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:22,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:21:22,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 399 [2023-11-17 15:21:22,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:21:22,569 INFO L124 PetriNetUnfolderBase]: 133/370 cut-off events. [2023-11-17 15:21:22,569 INFO L125 PetriNetUnfolderBase]: For 846/846 co-relation queries the response was YES. [2023-11-17 15:21:22,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1438 conditions, 370 events. 133/370 cut-off events. For 846/846 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1784 event pairs, 62 based on Foata normal form. 2/370 useless extension candidates. Maximal degree in co-relation 1415. Up to 300 conditions per place. [2023-11-17 15:21:22,572 INFO L140 encePairwiseOnDemand]: 388/399 looper letters, 57 selfloop transitions, 7 changer transitions 27/91 dead transitions. [2023-11-17 15:21:22,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 91 transitions, 794 flow [2023-11-17 15:21:22,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 15:21:22,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 15:21:22,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1410 transitions. [2023-11-17 15:21:22,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3212576896787423 [2023-11-17 15:21:22,576 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1410 transitions. [2023-11-17 15:21:22,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1410 transitions. [2023-11-17 15:21:22,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:21:22,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1410 transitions. [2023-11-17 15:21:22,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 128.1818181818182) internal successors, (1410), 11 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:22,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 399.0) internal successors, (4788), 12 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:22,583 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 399.0) internal successors, (4788), 12 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:22,583 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 388 flow. Second operand 11 states and 1410 transitions. [2023-11-17 15:21:22,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 91 transitions, 794 flow [2023-11-17 15:21:22,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 91 transitions, 764 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-17 15:21:22,588 INFO L231 Difference]: Finished difference. Result has 80 places, 59 transitions, 442 flow [2023-11-17 15:21:22,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=442, PETRI_PLACES=80, PETRI_TRANSITIONS=59} [2023-11-17 15:21:22,588 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 44 predicate places. [2023-11-17 15:21:22,589 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 59 transitions, 442 flow [2023-11-17 15:21:22,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:22,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:21:22,599 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] [2023-11-17 15:21:22,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 15:21:22,599 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 15:21:22,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:21:22,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1662973897, now seen corresponding path program 7 times [2023-11-17 15:21:22,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:21:22,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645382902] [2023-11-17 15:21:22,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:21:22,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:21:22,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:21:23,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:21:23,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:21:23,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645382902] [2023-11-17 15:21:23,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645382902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:21:23,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:21:23,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-17 15:21:23,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309421402] [2023-11-17 15:21:23,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:21:23,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:21:23,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:21:23,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:21:23,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:21:23,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 399 [2023-11-17 15:21:23,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 59 transitions, 442 flow. Second operand has 15 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:23,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:21:23,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 399 [2023-11-17 15:21:23,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:21:24,147 INFO L124 PetriNetUnfolderBase]: 124/343 cut-off events. [2023-11-17 15:21:24,148 INFO L125 PetriNetUnfolderBase]: For 925/925 co-relation queries the response was YES. [2023-11-17 15:21:24,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1407 conditions, 343 events. 124/343 cut-off events. For 925/925 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1604 event pairs, 39 based on Foata normal form. 1/342 useless extension candidates. Maximal degree in co-relation 1375. Up to 225 conditions per place. [2023-11-17 15:21:24,150 INFO L140 encePairwiseOnDemand]: 385/399 looper letters, 73 selfloop transitions, 26 changer transitions 1/100 dead transitions. [2023-11-17 15:21:24,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 100 transitions, 850 flow [2023-11-17 15:21:24,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 15:21:24,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 15:21:24,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1427 transitions. [2023-11-17 15:21:24,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32513100934153566 [2023-11-17 15:21:24,153 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1427 transitions. [2023-11-17 15:21:24,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1427 transitions. [2023-11-17 15:21:24,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:21:24,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1427 transitions. [2023-11-17 15:21:24,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 129.72727272727272) internal successors, (1427), 11 states have internal predecessors, (1427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:24,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 399.0) internal successors, (4788), 12 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:24,160 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 399.0) internal successors, (4788), 12 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:24,160 INFO L175 Difference]: Start difference. First operand has 80 places, 59 transitions, 442 flow. Second operand 11 states and 1427 transitions. [2023-11-17 15:21:24,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 100 transitions, 850 flow [2023-11-17 15:21:24,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 100 transitions, 806 flow, removed 19 selfloop flow, removed 7 redundant places. [2023-11-17 15:21:24,168 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 521 flow [2023-11-17 15:21:24,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=521, PETRI_PLACES=78, PETRI_TRANSITIONS=65} [2023-11-17 15:21:24,169 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 42 predicate places. [2023-11-17 15:21:24,169 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 521 flow [2023-11-17 15:21:24,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:24,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:21:24,169 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] [2023-11-17 15:21:24,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-17 15:21:24,169 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 15:21:24,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:21:24,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1816320579, now seen corresponding path program 8 times [2023-11-17 15:21:24,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:21:24,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382150916] [2023-11-17 15:21:24,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:21:24,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:21:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:21:25,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:21:25,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:21:25,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382150916] [2023-11-17 15:21:25,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382150916] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:21:25,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:21:25,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-17 15:21:25,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322007756] [2023-11-17 15:21:25,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:21:25,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:21:25,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:21:25,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:21:25,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:21:25,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 399 [2023-11-17 15:21:25,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 521 flow. Second operand has 15 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:25,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:21:25,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 399 [2023-11-17 15:21:25,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:21:25,750 INFO L124 PetriNetUnfolderBase]: 138/389 cut-off events. [2023-11-17 15:21:25,751 INFO L125 PetriNetUnfolderBase]: For 1069/1069 co-relation queries the response was YES. [2023-11-17 15:21:25,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1601 conditions, 389 events. 138/389 cut-off events. For 1069/1069 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1953 event pairs, 63 based on Foata normal form. 2/389 useless extension candidates. Maximal degree in co-relation 1573. Up to 304 conditions per place. [2023-11-17 15:21:25,753 INFO L140 encePairwiseOnDemand]: 388/399 looper letters, 68 selfloop transitions, 8 changer transitions 26/102 dead transitions. [2023-11-17 15:21:25,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 102 transitions, 954 flow [2023-11-17 15:21:25,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 15:21:25,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 15:21:25,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1415 transitions. [2023-11-17 15:21:25,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3223969013442698 [2023-11-17 15:21:25,757 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1415 transitions. [2023-11-17 15:21:25,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1415 transitions. [2023-11-17 15:21:25,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:21:25,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1415 transitions. [2023-11-17 15:21:25,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 128.63636363636363) internal successors, (1415), 11 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:25,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 399.0) internal successors, (4788), 12 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:25,764 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 399.0) internal successors, (4788), 12 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:25,764 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 521 flow. Second operand 11 states and 1415 transitions. [2023-11-17 15:21:25,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 102 transitions, 954 flow [2023-11-17 15:21:25,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 102 transitions, 879 flow, removed 5 selfloop flow, removed 9 redundant places. [2023-11-17 15:21:25,769 INFO L231 Difference]: Finished difference. Result has 85 places, 65 transitions, 508 flow [2023-11-17 15:21:25,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=508, PETRI_PLACES=85, PETRI_TRANSITIONS=65} [2023-11-17 15:21:25,770 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 49 predicate places. [2023-11-17 15:21:25,770 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 65 transitions, 508 flow [2023-11-17 15:21:25,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:25,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:21:25,770 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] [2023-11-17 15:21:25,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-17 15:21:25,770 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 15:21:25,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:21:25,771 INFO L85 PathProgramCache]: Analyzing trace with hash -621237097, now seen corresponding path program 9 times [2023-11-17 15:21:25,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:21:25,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577492868] [2023-11-17 15:21:25,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:21:25,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:21:25,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:21:26,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:21:26,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:21:26,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577492868] [2023-11-17 15:21:26,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577492868] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:21:26,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:21:26,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-17 15:21:26,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691886365] [2023-11-17 15:21:26,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:21:26,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:21:26,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:21:26,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:21:26,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:21:26,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 399 [2023-11-17 15:21:26,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 65 transitions, 508 flow. Second operand has 15 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:26,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:21:26,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 399 [2023-11-17 15:21:26,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:21:27,434 INFO L124 PetriNetUnfolderBase]: 122/343 cut-off events. [2023-11-17 15:21:27,434 INFO L125 PetriNetUnfolderBase]: For 1015/1015 co-relation queries the response was YES. [2023-11-17 15:21:27,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1434 conditions, 343 events. 122/343 cut-off events. For 1015/1015 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1616 event pairs, 44 based on Foata normal form. 1/343 useless extension candidates. Maximal degree in co-relation 1401. Up to 239 conditions per place. [2023-11-17 15:21:27,438 INFO L140 encePairwiseOnDemand]: 385/399 looper letters, 71 selfloop transitions, 28 changer transitions 0/99 dead transitions. [2023-11-17 15:21:27,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 99 transitions, 849 flow [2023-11-17 15:21:27,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 15:21:27,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 15:21:27,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1548 transitions. [2023-11-17 15:21:27,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3233082706766917 [2023-11-17 15:21:27,442 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1548 transitions. [2023-11-17 15:21:27,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1548 transitions. [2023-11-17 15:21:27,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:21:27,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1548 transitions. [2023-11-17 15:21:27,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:27,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 399.0) internal successors, (5187), 13 states have internal predecessors, (5187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:27,452 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 399.0) internal successors, (5187), 13 states have internal predecessors, (5187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:27,452 INFO L175 Difference]: Start difference. First operand has 85 places, 65 transitions, 508 flow. Second operand 12 states and 1548 transitions. [2023-11-17 15:21:27,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 99 transitions, 849 flow [2023-11-17 15:21:27,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 99 transitions, 807 flow, removed 12 selfloop flow, removed 10 redundant places. [2023-11-17 15:21:27,457 INFO L231 Difference]: Finished difference. Result has 82 places, 67 transitions, 557 flow [2023-11-17 15:21:27,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=557, PETRI_PLACES=82, PETRI_TRANSITIONS=67} [2023-11-17 15:21:27,458 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 46 predicate places. [2023-11-17 15:21:27,458 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 67 transitions, 557 flow [2023-11-17 15:21:27,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:27,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:21:27,459 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] [2023-11-17 15:21:27,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-17 15:21:27,459 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 15:21:27,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:21:27,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1307479808, now seen corresponding path program 2 times [2023-11-17 15:21:27,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:21:27,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095077709] [2023-11-17 15:21:27,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:21:27,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:21:27,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:21:27,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:21:27,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:21:27,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095077709] [2023-11-17 15:21:27,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095077709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:21:27,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:21:27,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 15:21:27,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747180788] [2023-11-17 15:21:27,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:21:27,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 15:21:27,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:21:27,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 15:21:27,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 15:21:27,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 399 [2023-11-17 15:21:27,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 67 transitions, 557 flow. Second operand has 7 states, 7 states have (on average 131.0) internal successors, (917), 7 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:27,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:21:27,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 399 [2023-11-17 15:21:27,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:21:28,071 INFO L124 PetriNetUnfolderBase]: 147/447 cut-off events. [2023-11-17 15:21:28,071 INFO L125 PetriNetUnfolderBase]: For 1111/1111 co-relation queries the response was YES. [2023-11-17 15:21:28,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1769 conditions, 447 events. 147/447 cut-off events. For 1111/1111 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2532 event pairs, 37 based on Foata normal form. 6/452 useless extension candidates. Maximal degree in co-relation 1740. Up to 147 conditions per place. [2023-11-17 15:21:28,074 INFO L140 encePairwiseOnDemand]: 391/399 looper letters, 61 selfloop transitions, 33 changer transitions 15/109 dead transitions. [2023-11-17 15:21:28,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 109 transitions, 1043 flow [2023-11-17 15:21:28,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:21:28,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:21:28,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 824 transitions. [2023-11-17 15:21:28,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3441938178780284 [2023-11-17 15:21:28,077 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 824 transitions. [2023-11-17 15:21:28,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 824 transitions. [2023-11-17 15:21:28,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:21:28,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 824 transitions. [2023-11-17 15:21:28,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 137.33333333333334) internal successors, (824), 6 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:28,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:28,081 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:28,081 INFO L175 Difference]: Start difference. First operand has 82 places, 67 transitions, 557 flow. Second operand 6 states and 824 transitions. [2023-11-17 15:21:28,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 109 transitions, 1043 flow [2023-11-17 15:21:28,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 109 transitions, 998 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-17 15:21:28,086 INFO L231 Difference]: Finished difference. Result has 81 places, 68 transitions, 617 flow [2023-11-17 15:21:28,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=617, PETRI_PLACES=81, PETRI_TRANSITIONS=68} [2023-11-17 15:21:28,088 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 45 predicate places. [2023-11-17 15:21:28,088 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 68 transitions, 617 flow [2023-11-17 15:21:28,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 131.0) internal successors, (917), 7 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:28,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:21:28,088 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] [2023-11-17 15:21:28,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-17 15:21:28,089 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 15:21:28,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:21:28,089 INFO L85 PathProgramCache]: Analyzing trace with hash -547746262, now seen corresponding path program 3 times [2023-11-17 15:21:28,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:21:28,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556936237] [2023-11-17 15:21:28,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:21:28,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:21:28,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:21:28,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:21:28,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:21:28,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556936237] [2023-11-17 15:21:28,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556936237] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:21:28,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:21:28,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 15:21:28,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558427193] [2023-11-17 15:21:28,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:21:28,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 15:21:28,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:21:28,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 15:21:28,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 15:21:28,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 399 [2023-11-17 15:21:28,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 68 transitions, 617 flow. Second operand has 7 states, 7 states have (on average 131.0) internal successors, (917), 7 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:28,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:21:28,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 399 [2023-11-17 15:21:28,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:21:28,641 INFO L124 PetriNetUnfolderBase]: 121/375 cut-off events. [2023-11-17 15:21:28,642 INFO L125 PetriNetUnfolderBase]: For 1193/1193 co-relation queries the response was YES. [2023-11-17 15:21:28,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1588 conditions, 375 events. 121/375 cut-off events. For 1193/1193 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1968 event pairs, 33 based on Foata normal form. 5/379 useless extension candidates. Maximal degree in co-relation 1558. Up to 154 conditions per place. [2023-11-17 15:21:28,644 INFO L140 encePairwiseOnDemand]: 392/399 looper letters, 65 selfloop transitions, 20 changer transitions 11/96 dead transitions. [2023-11-17 15:21:28,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 96 transitions, 943 flow [2023-11-17 15:21:28,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:21:28,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:21:28,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 828 transitions. [2023-11-17 15:21:28,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3458646616541353 [2023-11-17 15:21:28,646 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 828 transitions. [2023-11-17 15:21:28,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 828 transitions. [2023-11-17 15:21:28,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:21:28,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 828 transitions. [2023-11-17 15:21:28,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:28,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:28,650 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:28,650 INFO L175 Difference]: Start difference. First operand has 81 places, 68 transitions, 617 flow. Second operand 6 states and 828 transitions. [2023-11-17 15:21:28,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 96 transitions, 943 flow [2023-11-17 15:21:28,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 96 transitions, 874 flow, removed 18 selfloop flow, removed 8 redundant places. [2023-11-17 15:21:28,655 INFO L231 Difference]: Finished difference. Result has 78 places, 59 transitions, 543 flow [2023-11-17 15:21:28,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=543, PETRI_PLACES=78, PETRI_TRANSITIONS=59} [2023-11-17 15:21:28,655 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 42 predicate places. [2023-11-17 15:21:28,655 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 59 transitions, 543 flow [2023-11-17 15:21:28,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 131.0) internal successors, (917), 7 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:28,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:21:28,656 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] [2023-11-17 15:21:28,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-17 15:21:28,656 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 15:21:28,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:21:28,656 INFO L85 PathProgramCache]: Analyzing trace with hash -218203649, now seen corresponding path program 10 times [2023-11-17 15:21:28,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:21:28,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135270636] [2023-11-17 15:21:28,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:21:28,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:21:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:21:29,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:21:29,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:21:29,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135270636] [2023-11-17 15:21:29,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135270636] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:21:29,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:21:29,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-17 15:21:29,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146093602] [2023-11-17 15:21:29,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:21:29,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 15:21:29,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:21:29,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 15:21:29,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-11-17 15:21:29,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 399 [2023-11-17 15:21:29,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 59 transitions, 543 flow. Second operand has 14 states, 14 states have (on average 124.5) internal successors, (1743), 14 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:29,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:21:29,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 399 [2023-11-17 15:21:29,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:21:30,052 INFO L124 PetriNetUnfolderBase]: 106/335 cut-off events. [2023-11-17 15:21:30,053 INFO L125 PetriNetUnfolderBase]: For 1268/1268 co-relation queries the response was YES. [2023-11-17 15:21:30,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1426 conditions, 335 events. 106/335 cut-off events. For 1268/1268 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1660 event pairs, 62 based on Foata normal form. 3/337 useless extension candidates. Maximal degree in co-relation 1397. Up to 241 conditions per place. [2023-11-17 15:21:30,055 INFO L140 encePairwiseOnDemand]: 388/399 looper letters, 46 selfloop transitions, 6 changer transitions 31/83 dead transitions. [2023-11-17 15:21:30,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 83 transitions, 833 flow [2023-11-17 15:21:30,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 15:21:30,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 15:21:30,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1412 transitions. [2023-11-17 15:21:30,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3217133743449533 [2023-11-17 15:21:30,058 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1412 transitions. [2023-11-17 15:21:30,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1412 transitions. [2023-11-17 15:21:30,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:21:30,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1412 transitions. [2023-11-17 15:21:30,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 128.36363636363637) internal successors, (1412), 11 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:30,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 399.0) internal successors, (4788), 12 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:30,066 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 399.0) internal successors, (4788), 12 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:30,066 INFO L175 Difference]: Start difference. First operand has 78 places, 59 transitions, 543 flow. Second operand 11 states and 1412 transitions. [2023-11-17 15:21:30,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 83 transitions, 833 flow [2023-11-17 15:21:30,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 83 transitions, 780 flow, removed 18 selfloop flow, removed 5 redundant places. [2023-11-17 15:21:30,071 INFO L231 Difference]: Finished difference. Result has 86 places, 48 transitions, 425 flow [2023-11-17 15:21:30,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=425, PETRI_PLACES=86, PETRI_TRANSITIONS=48} [2023-11-17 15:21:30,072 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 50 predicate places. [2023-11-17 15:21:30,072 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 48 transitions, 425 flow [2023-11-17 15:21:30,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 124.5) internal successors, (1743), 14 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:30,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:21:30,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:21:30,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-17 15:21:30,072 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 15:21:30,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:21:30,073 INFO L85 PathProgramCache]: Analyzing trace with hash -2064377649, now seen corresponding path program 11 times [2023-11-17 15:21:30,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:21:30,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335216890] [2023-11-17 15:21:30,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:21:30,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:21:30,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:21:31,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:21:31,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:21:31,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335216890] [2023-11-17 15:21:31,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335216890] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:21:31,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:21:31,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-17 15:21:31,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299696087] [2023-11-17 15:21:31,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:21:31,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:21:31,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:21:31,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:21:31,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:21:31,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 399 [2023-11-17 15:21:31,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 48 transitions, 425 flow. Second operand has 15 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:31,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:21:31,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 399 [2023-11-17 15:21:31,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:21:31,629 INFO L124 PetriNetUnfolderBase]: 91/288 cut-off events. [2023-11-17 15:21:31,629 INFO L125 PetriNetUnfolderBase]: For 1013/1013 co-relation queries the response was YES. [2023-11-17 15:21:31,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1242 conditions, 288 events. 91/288 cut-off events. For 1013/1013 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1354 event pairs, 25 based on Foata normal form. 3/290 useless extension candidates. Maximal degree in co-relation 1209. Up to 140 conditions per place. [2023-11-17 15:21:31,631 INFO L140 encePairwiseOnDemand]: 387/399 looper letters, 50 selfloop transitions, 16 changer transitions 24/90 dead transitions. [2023-11-17 15:21:31,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 90 transitions, 852 flow [2023-11-17 15:21:31,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 15:21:31,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 15:21:31,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1423 transitions. [2023-11-17 15:21:31,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3242196400091137 [2023-11-17 15:21:31,634 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1423 transitions. [2023-11-17 15:21:31,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1423 transitions. [2023-11-17 15:21:31,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:21:31,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1423 transitions. [2023-11-17 15:21:31,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 129.36363636363637) internal successors, (1423), 11 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:31,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 399.0) internal successors, (4788), 12 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:31,639 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 399.0) internal successors, (4788), 12 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:31,639 INFO L175 Difference]: Start difference. First operand has 86 places, 48 transitions, 425 flow. Second operand 11 states and 1423 transitions. [2023-11-17 15:21:31,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 90 transitions, 852 flow [2023-11-17 15:21:31,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 90 transitions, 722 flow, removed 54 selfloop flow, removed 13 redundant places. [2023-11-17 15:21:31,646 INFO L231 Difference]: Finished difference. Result has 76 places, 53 transitions, 453 flow [2023-11-17 15:21:31,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=453, PETRI_PLACES=76, PETRI_TRANSITIONS=53} [2023-11-17 15:21:31,647 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 40 predicate places. [2023-11-17 15:21:31,647 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 53 transitions, 453 flow [2023-11-17 15:21:31,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:31,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:21:31,648 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] [2023-11-17 15:21:31,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-17 15:21:31,648 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 15:21:31,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:21:31,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1758956019, now seen corresponding path program 12 times [2023-11-17 15:21:31,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:21:31,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744289549] [2023-11-17 15:21:31,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:21:31,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:21:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:21:32,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:21:32,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:21:32,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744289549] [2023-11-17 15:21:32,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744289549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:21:32,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:21:32,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-17 15:21:32,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627866561] [2023-11-17 15:21:32,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:21:32,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:21:32,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:21:32,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:21:32,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:21:32,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 399 [2023-11-17 15:21:32,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 53 transitions, 453 flow. Second operand has 15 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:32,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:21:32,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 399 [2023-11-17 15:21:32,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:21:33,119 INFO L124 PetriNetUnfolderBase]: 66/220 cut-off events. [2023-11-17 15:21:33,119 INFO L125 PetriNetUnfolderBase]: For 740/740 co-relation queries the response was YES. [2023-11-17 15:21:33,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 939 conditions, 220 events. 66/220 cut-off events. For 740/740 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 890 event pairs, 19 based on Foata normal form. 2/220 useless extension candidates. Maximal degree in co-relation 912. Up to 98 conditions per place. [2023-11-17 15:21:33,121 INFO L140 encePairwiseOnDemand]: 388/399 looper letters, 41 selfloop transitions, 11 changer transitions 30/82 dead transitions. [2023-11-17 15:21:33,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 82 transitions, 720 flow [2023-11-17 15:21:33,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 15:21:33,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 15:21:33,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1420 transitions. [2023-11-17 15:21:33,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32353611300979723 [2023-11-17 15:21:33,123 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1420 transitions. [2023-11-17 15:21:33,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1420 transitions. [2023-11-17 15:21:33,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:21:33,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1420 transitions. [2023-11-17 15:21:33,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 129.0909090909091) internal successors, (1420), 11 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:33,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 399.0) internal successors, (4788), 12 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:33,127 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 399.0) internal successors, (4788), 12 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:33,127 INFO L175 Difference]: Start difference. First operand has 76 places, 53 transitions, 453 flow. Second operand 11 states and 1420 transitions. [2023-11-17 15:21:33,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 82 transitions, 720 flow [2023-11-17 15:21:33,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 82 transitions, 701 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-11-17 15:21:33,131 INFO L231 Difference]: Finished difference. Result has 82 places, 44 transitions, 379 flow [2023-11-17 15:21:33,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=379, PETRI_PLACES=82, PETRI_TRANSITIONS=44} [2023-11-17 15:21:33,131 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 46 predicate places. [2023-11-17 15:21:33,131 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 44 transitions, 379 flow [2023-11-17 15:21:33,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:33,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:21:33,132 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] [2023-11-17 15:21:33,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-17 15:21:33,132 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 15:21:33,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:21:33,132 INFO L85 PathProgramCache]: Analyzing trace with hash 2109507185, now seen corresponding path program 13 times [2023-11-17 15:21:33,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:21:33,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883692740] [2023-11-17 15:21:33,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:21:33,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:21:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:21:33,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:21:33,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:21:33,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883692740] [2023-11-17 15:21:33,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883692740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:21:33,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:21:33,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-17 15:21:33,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842805860] [2023-11-17 15:21:33,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:21:33,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 15:21:33,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:21:33,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 15:21:33,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-11-17 15:21:33,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 399 [2023-11-17 15:21:33,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 44 transitions, 379 flow. Second operand has 14 states, 14 states have (on average 124.5) internal successors, (1743), 14 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:33,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:21:33,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 399 [2023-11-17 15:21:33,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:21:34,482 INFO L124 PetriNetUnfolderBase]: 51/184 cut-off events. [2023-11-17 15:21:34,482 INFO L125 PetriNetUnfolderBase]: For 627/627 co-relation queries the response was YES. [2023-11-17 15:21:34,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 818 conditions, 184 events. 51/184 cut-off events. For 627/627 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 687 event pairs, 11 based on Foata normal form. 1/183 useless extension candidates. Maximal degree in co-relation 788. Up to 85 conditions per place. [2023-11-17 15:21:34,484 INFO L140 encePairwiseOnDemand]: 387/399 looper letters, 45 selfloop transitions, 15 changer transitions 20/80 dead transitions. [2023-11-17 15:21:34,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 80 transitions, 708 flow [2023-11-17 15:21:34,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 15:21:34,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 15:21:34,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1545 transitions. [2023-11-17 15:21:34,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3226817042606516 [2023-11-17 15:21:34,485 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1545 transitions. [2023-11-17 15:21:34,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1545 transitions. [2023-11-17 15:21:34,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:21:34,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1545 transitions. [2023-11-17 15:21:34,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 128.75) internal successors, (1545), 12 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:34,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 399.0) internal successors, (5187), 13 states have internal predecessors, (5187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:34,490 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 399.0) internal successors, (5187), 13 states have internal predecessors, (5187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:34,490 INFO L175 Difference]: Start difference. First operand has 82 places, 44 transitions, 379 flow. Second operand 12 states and 1545 transitions. [2023-11-17 15:21:34,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 80 transitions, 708 flow [2023-11-17 15:21:34,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 80 transitions, 636 flow, removed 20 selfloop flow, removed 11 redundant places. [2023-11-17 15:21:34,493 INFO L231 Difference]: Finished difference. Result has 82 places, 48 transitions, 404 flow [2023-11-17 15:21:34,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=404, PETRI_PLACES=82, PETRI_TRANSITIONS=48} [2023-11-17 15:21:34,494 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 46 predicate places. [2023-11-17 15:21:34,494 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 48 transitions, 404 flow [2023-11-17 15:21:34,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 124.5) internal successors, (1743), 14 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:34,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:21:34,494 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] [2023-11-17 15:21:34,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-17 15:21:34,495 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 15:21:34,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:21:34,495 INFO L85 PathProgramCache]: Analyzing trace with hash -751480945, now seen corresponding path program 14 times [2023-11-17 15:21:34,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:21:34,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277158458] [2023-11-17 15:21:34,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:21:34,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:21:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:21:35,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:21:35,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:21:35,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277158458] [2023-11-17 15:21:35,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277158458] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:21:35,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:21:35,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-17 15:21:35,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401763474] [2023-11-17 15:21:35,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:21:35,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 15:21:35,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:21:35,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 15:21:35,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-11-17 15:21:35,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 399 [2023-11-17 15:21:35,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 48 transitions, 404 flow. Second operand has 14 states, 14 states have (on average 124.5) internal successors, (1743), 14 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:35,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:21:35,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 399 [2023-11-17 15:21:35,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:21:35,704 INFO L124 PetriNetUnfolderBase]: 44/161 cut-off events. [2023-11-17 15:21:35,705 INFO L125 PetriNetUnfolderBase]: For 599/599 co-relation queries the response was YES. [2023-11-17 15:21:35,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 161 events. 44/161 cut-off events. For 599/599 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 562 event pairs, 12 based on Foata normal form. 2/161 useless extension candidates. Maximal degree in co-relation 684. Up to 74 conditions per place. [2023-11-17 15:21:35,705 INFO L140 encePairwiseOnDemand]: 388/399 looper letters, 30 selfloop transitions, 4 changer transitions 35/69 dead transitions. [2023-11-17 15:21:35,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 69 transitions, 595 flow [2023-11-17 15:21:35,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 15:21:35,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 15:21:35,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1412 transitions. [2023-11-17 15:21:35,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3217133743449533 [2023-11-17 15:21:35,710 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1412 transitions. [2023-11-17 15:21:35,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1412 transitions. [2023-11-17 15:21:35,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:21:35,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1412 transitions. [2023-11-17 15:21:35,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 128.36363636363637) internal successors, (1412), 11 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:35,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 399.0) internal successors, (4788), 12 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:35,714 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 399.0) internal successors, (4788), 12 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:35,714 INFO L175 Difference]: Start difference. First operand has 82 places, 48 transitions, 404 flow. Second operand 11 states and 1412 transitions. [2023-11-17 15:21:35,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 69 transitions, 595 flow [2023-11-17 15:21:35,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 69 transitions, 575 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-11-17 15:21:35,722 INFO L231 Difference]: Finished difference. Result has 85 places, 33 transitions, 253 flow [2023-11-17 15:21:35,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=253, PETRI_PLACES=85, PETRI_TRANSITIONS=33} [2023-11-17 15:21:35,722 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 49 predicate places. [2023-11-17 15:21:35,722 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 33 transitions, 253 flow [2023-11-17 15:21:35,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 124.5) internal successors, (1743), 14 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:35,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:21:35,723 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] [2023-11-17 15:21:35,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-17 15:21:35,723 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 15:21:35,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:21:35,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1331427040, now seen corresponding path program 4 times [2023-11-17 15:21:35,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:21:35,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876889989] [2023-11-17 15:21:35,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:21:35,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:21:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:21:36,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:21:36,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:21:36,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876889989] [2023-11-17 15:21:36,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876889989] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:21:36,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:21:36,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 15:21:36,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781510097] [2023-11-17 15:21:36,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:21:36,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 15:21:36,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:21:36,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 15:21:36,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 15:21:36,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 399 [2023-11-17 15:21:36,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 33 transitions, 253 flow. Second operand has 7 states, 7 states have (on average 131.0) internal successors, (917), 7 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:36,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:21:36,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 399 [2023-11-17 15:21:36,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:21:36,256 INFO L124 PetriNetUnfolderBase]: 19/92 cut-off events. [2023-11-17 15:21:36,256 INFO L125 PetriNetUnfolderBase]: For 280/280 co-relation queries the response was YES. [2023-11-17 15:21:36,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417 conditions, 92 events. 19/92 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 250 event pairs, 10 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 388. Up to 39 conditions per place. [2023-11-17 15:21:36,257 INFO L140 encePairwiseOnDemand]: 393/399 looper letters, 37 selfloop transitions, 11 changer transitions 0/48 dead transitions. [2023-11-17 15:21:36,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 48 transitions, 409 flow [2023-11-17 15:21:36,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:21:36,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:21:36,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 810 transitions. [2023-11-17 15:21:36,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3383458646616541 [2023-11-17 15:21:36,258 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 810 transitions. [2023-11-17 15:21:36,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 810 transitions. [2023-11-17 15:21:36,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:21:36,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 810 transitions. [2023-11-17 15:21:36,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 135.0) internal successors, (810), 6 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:36,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:36,260 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:36,261 INFO L175 Difference]: Start difference. First operand has 85 places, 33 transitions, 253 flow. Second operand 6 states and 810 transitions. [2023-11-17 15:21:36,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 48 transitions, 409 flow [2023-11-17 15:21:36,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 48 transitions, 311 flow, removed 22 selfloop flow, removed 18 redundant places. [2023-11-17 15:21:36,263 INFO L231 Difference]: Finished difference. Result has 55 places, 35 transitions, 220 flow [2023-11-17 15:21:36,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=220, PETRI_PLACES=55, PETRI_TRANSITIONS=35} [2023-11-17 15:21:36,265 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 19 predicate places. [2023-11-17 15:21:36,265 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 35 transitions, 220 flow [2023-11-17 15:21:36,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 131.0) internal successors, (917), 7 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:36,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:21:36,265 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] [2023-11-17 15:21:36,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-17 15:21:36,265 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 15:21:36,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:21:36,266 INFO L85 PathProgramCache]: Analyzing trace with hash -614154823, now seen corresponding path program 15 times [2023-11-17 15:21:36,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:21:36,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513106847] [2023-11-17 15:21:36,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:21:36,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:21:36,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:21:37,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:21:37,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:21:37,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513106847] [2023-11-17 15:21:37,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513106847] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:21:37,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:21:37,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-17 15:21:37,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065062215] [2023-11-17 15:21:37,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:21:37,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:21:37,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:21:37,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:21:37,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:21:37,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 399 [2023-11-17 15:21:37,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 35 transitions, 220 flow. Second operand has 15 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:37,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:21:37,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 399 [2023-11-17 15:21:37,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:21:37,643 INFO L124 PetriNetUnfolderBase]: 18/102 cut-off events. [2023-11-17 15:21:37,643 INFO L125 PetriNetUnfolderBase]: For 247/247 co-relation queries the response was YES. [2023-11-17 15:21:37,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 102 events. 18/102 cut-off events. For 247/247 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 318 event pairs, 0 based on Foata normal form. 1/102 useless extension candidates. Maximal degree in co-relation 367. Up to 32 conditions per place. [2023-11-17 15:21:37,644 INFO L140 encePairwiseOnDemand]: 389/399 looper letters, 31 selfloop transitions, 14 changer transitions 10/55 dead transitions. [2023-11-17 15:21:37,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 55 transitions, 415 flow [2023-11-17 15:21:37,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 15:21:37,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 15:21:37,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1399 transitions. [2023-11-17 15:21:37,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3187514240145819 [2023-11-17 15:21:37,646 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1399 transitions. [2023-11-17 15:21:37,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1399 transitions. [2023-11-17 15:21:37,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:21:37,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1399 transitions. [2023-11-17 15:21:37,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 127.18181818181819) internal successors, (1399), 11 states have internal predecessors, (1399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:37,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 399.0) internal successors, (4788), 12 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:37,650 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 399.0) internal successors, (4788), 12 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:37,650 INFO L175 Difference]: Start difference. First operand has 55 places, 35 transitions, 220 flow. Second operand 11 states and 1399 transitions. [2023-11-17 15:21:37,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 55 transitions, 415 flow [2023-11-17 15:21:37,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 55 transitions, 398 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 15:21:37,651 INFO L231 Difference]: Finished difference. Result has 66 places, 37 transitions, 266 flow [2023-11-17 15:21:37,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=266, PETRI_PLACES=66, PETRI_TRANSITIONS=37} [2023-11-17 15:21:37,652 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 30 predicate places. [2023-11-17 15:21:37,652 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 37 transitions, 266 flow [2023-11-17 15:21:37,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:37,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:21:37,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:21:37,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-17 15:21:37,652 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 15:21:37,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:21:37,653 INFO L85 PathProgramCache]: Analyzing trace with hash 623497131, now seen corresponding path program 16 times [2023-11-17 15:21:37,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:21:37,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3938908] [2023-11-17 15:21:37,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:21:37,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:21:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:21:38,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:21:38,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:21:38,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3938908] [2023-11-17 15:21:38,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3938908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:21:38,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:21:38,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-17 15:21:38,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811988088] [2023-11-17 15:21:38,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:21:38,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:21:38,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:21:38,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:21:38,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:21:38,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 399 [2023-11-17 15:21:38,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 37 transitions, 266 flow. Second operand has 15 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:38,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:21:38,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 399 [2023-11-17 15:21:38,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:21:39,049 INFO L124 PetriNetUnfolderBase]: 18/100 cut-off events. [2023-11-17 15:21:39,049 INFO L125 PetriNetUnfolderBase]: For 266/266 co-relation queries the response was YES. [2023-11-17 15:21:39,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 424 conditions, 100 events. 18/100 cut-off events. For 266/266 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 305 event pairs, 2 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 403. Up to 33 conditions per place. [2023-11-17 15:21:39,050 INFO L140 encePairwiseOnDemand]: 388/399 looper letters, 34 selfloop transitions, 19 changer transitions 1/54 dead transitions. [2023-11-17 15:21:39,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 54 transitions, 467 flow [2023-11-17 15:21:39,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 15:21:39,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 15:21:39,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1397 transitions. [2023-11-17 15:21:39,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3182957393483709 [2023-11-17 15:21:39,052 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1397 transitions. [2023-11-17 15:21:39,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1397 transitions. [2023-11-17 15:21:39,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:21:39,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1397 transitions. [2023-11-17 15:21:39,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 127.0) internal successors, (1397), 11 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:39,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 399.0) internal successors, (4788), 12 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:39,056 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 399.0) internal successors, (4788), 12 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:39,056 INFO L175 Difference]: Start difference. First operand has 66 places, 37 transitions, 266 flow. Second operand 11 states and 1397 transitions. [2023-11-17 15:21:39,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 54 transitions, 467 flow [2023-11-17 15:21:39,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 54 transitions, 442 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-11-17 15:21:39,057 INFO L231 Difference]: Finished difference. Result has 68 places, 40 transitions, 325 flow [2023-11-17 15:21:39,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=325, PETRI_PLACES=68, PETRI_TRANSITIONS=40} [2023-11-17 15:21:39,058 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 32 predicate places. [2023-11-17 15:21:39,058 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 40 transitions, 325 flow [2023-11-17 15:21:39,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:39,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:21:39,058 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] [2023-11-17 15:21:39,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-17 15:21:39,058 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 15:21:39,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:21:39,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1474248865, now seen corresponding path program 17 times [2023-11-17 15:21:39,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:21:39,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165286202] [2023-11-17 15:21:39,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:21:39,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:21:39,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:21:39,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:21:39,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:21:39,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165286202] [2023-11-17 15:21:39,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165286202] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:21:39,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:21:39,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-17 15:21:39,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849077767] [2023-11-17 15:21:39,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:21:39,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:21:39,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:21:39,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:21:39,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:21:39,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 399 [2023-11-17 15:21:39,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 40 transitions, 325 flow. Second operand has 15 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:39,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:21:39,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 399 [2023-11-17 15:21:39,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:21:40,250 INFO L124 PetriNetUnfolderBase]: 18/106 cut-off events. [2023-11-17 15:21:40,250 INFO L125 PetriNetUnfolderBase]: For 333/333 co-relation queries the response was YES. [2023-11-17 15:21:40,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 465 conditions, 106 events. 18/106 cut-off events. For 333/333 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 344 event pairs, 2 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 444. Up to 39 conditions per place. [2023-11-17 15:21:40,251 INFO L140 encePairwiseOnDemand]: 388/399 looper letters, 35 selfloop transitions, 20 changer transitions 1/56 dead transitions. [2023-11-17 15:21:40,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 56 transitions, 518 flow [2023-11-17 15:21:40,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 15:21:40,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 15:21:40,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1398 transitions. [2023-11-17 15:21:40,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31852358168147643 [2023-11-17 15:21:40,252 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1398 transitions. [2023-11-17 15:21:40,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1398 transitions. [2023-11-17 15:21:40,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:21:40,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1398 transitions. [2023-11-17 15:21:40,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 127.0909090909091) internal successors, (1398), 11 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:40,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 399.0) internal successors, (4788), 12 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:40,258 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 399.0) internal successors, (4788), 12 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:40,258 INFO L175 Difference]: Start difference. First operand has 68 places, 40 transitions, 325 flow. Second operand 11 states and 1398 transitions. [2023-11-17 15:21:40,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 56 transitions, 518 flow [2023-11-17 15:21:40,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 56 transitions, 474 flow, removed 2 selfloop flow, removed 9 redundant places. [2023-11-17 15:21:40,260 INFO L231 Difference]: Finished difference. Result has 71 places, 42 transitions, 349 flow [2023-11-17 15:21:40,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=349, PETRI_PLACES=71, PETRI_TRANSITIONS=42} [2023-11-17 15:21:40,261 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 35 predicate places. [2023-11-17 15:21:40,261 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 42 transitions, 349 flow [2023-11-17 15:21:40,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:40,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:21:40,261 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] [2023-11-17 15:21:40,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-17 15:21:40,261 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 15:21:40,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:21:40,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1864729039, now seen corresponding path program 18 times [2023-11-17 15:21:40,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:21:40,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608846596] [2023-11-17 15:21:40,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:21:40,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:21:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:21:41,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:21:41,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:21:41,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608846596] [2023-11-17 15:21:41,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608846596] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:21:41,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:21:41,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-17 15:21:41,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303689308] [2023-11-17 15:21:41,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:21:41,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:21:41,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:21:41,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:21:41,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:21:41,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 399 [2023-11-17 15:21:41,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 42 transitions, 349 flow. Second operand has 15 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:41,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:21:41,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 399 [2023-11-17 15:21:41,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:21:41,443 INFO L124 PetriNetUnfolderBase]: 15/102 cut-off events. [2023-11-17 15:21:41,443 INFO L125 PetriNetUnfolderBase]: For 320/320 co-relation queries the response was YES. [2023-11-17 15:21:41,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 102 events. 15/102 cut-off events. For 320/320 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 328 event pairs, 1 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 417. Up to 20 conditions per place. [2023-11-17 15:21:41,444 INFO L140 encePairwiseOnDemand]: 387/399 looper letters, 33 selfloop transitions, 21 changer transitions 0/54 dead transitions. [2023-11-17 15:21:41,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 54 transitions, 490 flow [2023-11-17 15:21:41,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 15:21:41,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 15:21:41,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1395 transitions. [2023-11-17 15:21:41,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3178400546821599 [2023-11-17 15:21:41,447 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1395 transitions. [2023-11-17 15:21:41,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1395 transitions. [2023-11-17 15:21:41,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:21:41,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1395 transitions. [2023-11-17 15:21:41,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 126.81818181818181) internal successors, (1395), 11 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:41,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 399.0) internal successors, (4788), 12 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:41,450 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 399.0) internal successors, (4788), 12 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:41,450 INFO L175 Difference]: Start difference. First operand has 71 places, 42 transitions, 349 flow. Second operand 11 states and 1395 transitions. [2023-11-17 15:21:41,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 54 transitions, 490 flow [2023-11-17 15:21:41,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 54 transitions, 447 flow, removed 2 selfloop flow, removed 9 redundant places. [2023-11-17 15:21:41,452 INFO L231 Difference]: Finished difference. Result has 73 places, 42 transitions, 348 flow [2023-11-17 15:21:41,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=348, PETRI_PLACES=73, PETRI_TRANSITIONS=42} [2023-11-17 15:21:41,454 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 37 predicate places. [2023-11-17 15:21:41,454 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 42 transitions, 348 flow [2023-11-17 15:21:41,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:41,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:21:41,454 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] [2023-11-17 15:21:41,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-17 15:21:41,454 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 15:21:41,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:21:41,454 INFO L85 PathProgramCache]: Analyzing trace with hash 623497108, now seen corresponding path program 5 times [2023-11-17 15:21:41,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:21:41,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194965694] [2023-11-17 15:21:41,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:21:41,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:21:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:21:41,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:21:41,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:21:41,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194965694] [2023-11-17 15:21:41,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194965694] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:21:41,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:21:41,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 15:21:41,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107607001] [2023-11-17 15:21:41,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:21:41,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 15:21:41,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:21:41,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 15:21:41,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 15:21:41,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 399 [2023-11-17 15:21:41,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 42 transitions, 348 flow. Second operand has 7 states, 7 states have (on average 131.0) internal successors, (917), 7 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:41,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:21:41,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 399 [2023-11-17 15:21:41,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:21:41,920 INFO L124 PetriNetUnfolderBase]: 13/107 cut-off events. [2023-11-17 15:21:41,920 INFO L125 PetriNetUnfolderBase]: For 310/310 co-relation queries the response was YES. [2023-11-17 15:21:41,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 107 events. 13/107 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 380 event pairs, 6 based on Foata normal form. 3/110 useless extension candidates. Maximal degree in co-relation 436. Up to 36 conditions per place. [2023-11-17 15:21:41,921 INFO L140 encePairwiseOnDemand]: 392/399 looper letters, 27 selfloop transitions, 9 changer transitions 14/50 dead transitions. [2023-11-17 15:21:41,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 50 transitions, 477 flow [2023-11-17 15:21:41,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:21:41,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:21:41,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 802 transitions. [2023-11-17 15:21:41,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33500417710944025 [2023-11-17 15:21:41,923 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 802 transitions. [2023-11-17 15:21:41,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 802 transitions. [2023-11-17 15:21:41,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:21:41,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 802 transitions. [2023-11-17 15:21:41,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 133.66666666666666) internal successors, (802), 6 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:41,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:41,925 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:41,925 INFO L175 Difference]: Start difference. First operand has 73 places, 42 transitions, 348 flow. Second operand 6 states and 802 transitions. [2023-11-17 15:21:41,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 50 transitions, 477 flow [2023-11-17 15:21:41,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 50 transitions, 420 flow, removed 2 selfloop flow, removed 12 redundant places. [2023-11-17 15:21:41,929 INFO L231 Difference]: Finished difference. Result has 67 places, 35 transitions, 239 flow [2023-11-17 15:21:41,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=239, PETRI_PLACES=67, PETRI_TRANSITIONS=35} [2023-11-17 15:21:41,929 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 31 predicate places. [2023-11-17 15:21:41,929 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 35 transitions, 239 flow [2023-11-17 15:21:41,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 131.0) internal successors, (917), 7 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:41,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:21:41,929 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] [2023-11-17 15:21:41,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-17 15:21:41,930 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 15:21:41,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:21:41,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1331427017, now seen corresponding path program 19 times [2023-11-17 15:21:41,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:21:41,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781531948] [2023-11-17 15:21:41,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:21:41,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:21:41,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:21:42,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:21:42,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:21:42,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781531948] [2023-11-17 15:21:42,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781531948] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:21:42,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:21:42,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-17 15:21:42,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86762442] [2023-11-17 15:21:42,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:21:42,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:21:42,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:21:42,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:21:42,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:21:42,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 399 [2023-11-17 15:21:42,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 35 transitions, 239 flow. Second operand has 15 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:42,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:21:42,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 399 [2023-11-17 15:21:42,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:21:43,116 INFO L124 PetriNetUnfolderBase]: 9/90 cut-off events. [2023-11-17 15:21:43,116 INFO L125 PetriNetUnfolderBase]: For 173/173 co-relation queries the response was YES. [2023-11-17 15:21:43,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 90 events. 9/90 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 286 event pairs, 0 based on Foata normal form. 1/91 useless extension candidates. Maximal degree in co-relation 335. Up to 56 conditions per place. [2023-11-17 15:21:43,117 INFO L140 encePairwiseOnDemand]: 389/399 looper letters, 31 selfloop transitions, 8 changer transitions 12/51 dead transitions. [2023-11-17 15:21:43,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 51 transitions, 420 flow [2023-11-17 15:21:43,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 15:21:43,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 15:21:43,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1395 transitions. [2023-11-17 15:21:43,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3178400546821599 [2023-11-17 15:21:43,119 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1395 transitions. [2023-11-17 15:21:43,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1395 transitions. [2023-11-17 15:21:43,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:21:43,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1395 transitions. [2023-11-17 15:21:43,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 126.81818181818181) internal successors, (1395), 11 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:43,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 399.0) internal successors, (4788), 12 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:43,123 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 399.0) internal successors, (4788), 12 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:43,123 INFO L175 Difference]: Start difference. First operand has 67 places, 35 transitions, 239 flow. Second operand 11 states and 1395 transitions. [2023-11-17 15:21:43,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 51 transitions, 420 flow [2023-11-17 15:21:43,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 51 transitions, 361 flow, removed 1 selfloop flow, removed 10 redundant places. [2023-11-17 15:21:43,125 INFO L231 Difference]: Finished difference. Result has 68 places, 35 transitions, 222 flow [2023-11-17 15:21:43,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=222, PETRI_PLACES=68, PETRI_TRANSITIONS=35} [2023-11-17 15:21:43,126 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 32 predicate places. [2023-11-17 15:21:43,126 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 35 transitions, 222 flow [2023-11-17 15:21:43,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:43,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:21:43,126 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] [2023-11-17 15:21:43,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-17 15:21:43,126 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 15:21:43,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:21:43,127 INFO L85 PathProgramCache]: Analyzing trace with hash -2137666301, now seen corresponding path program 20 times [2023-11-17 15:21:43,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:21:43,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051702185] [2023-11-17 15:21:43,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:21:43,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:21:43,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:21:43,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:21:43,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:21:43,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051702185] [2023-11-17 15:21:43,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051702185] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:21:43,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:21:43,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-17 15:21:43,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741184701] [2023-11-17 15:21:43,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:21:43,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:21:43,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:21:43,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:21:43,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:21:43,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 399 [2023-11-17 15:21:43,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 35 transitions, 222 flow. Second operand has 15 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:43,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:21:43,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 399 [2023-11-17 15:21:43,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:21:44,282 INFO L124 PetriNetUnfolderBase]: 8/83 cut-off events. [2023-11-17 15:21:44,282 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2023-11-17 15:21:44,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 83 events. 8/83 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 238 event pairs, 0 based on Foata normal form. 1/84 useless extension candidates. Maximal degree in co-relation 298. Up to 50 conditions per place. [2023-11-17 15:21:44,283 INFO L140 encePairwiseOnDemand]: 389/399 looper letters, 29 selfloop transitions, 7 changer transitions 13/49 dead transitions. [2023-11-17 15:21:44,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 49 transitions, 377 flow [2023-11-17 15:21:44,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 15:21:44,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 15:21:44,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1394 transitions. [2023-11-17 15:21:44,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31761221234905446 [2023-11-17 15:21:44,285 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1394 transitions. [2023-11-17 15:21:44,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1394 transitions. [2023-11-17 15:21:44,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:21:44,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1394 transitions. [2023-11-17 15:21:44,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 126.72727272727273) internal successors, (1394), 11 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:44,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 399.0) internal successors, (4788), 12 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:44,289 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 399.0) internal successors, (4788), 12 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:44,289 INFO L175 Difference]: Start difference. First operand has 68 places, 35 transitions, 222 flow. Second operand 11 states and 1394 transitions. [2023-11-17 15:21:44,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 49 transitions, 377 flow [2023-11-17 15:21:44,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 49 transitions, 345 flow, removed 6 selfloop flow, removed 9 redundant places. [2023-11-17 15:21:44,291 INFO L231 Difference]: Finished difference. Result has 68 places, 33 transitions, 201 flow [2023-11-17 15:21:44,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=201, PETRI_PLACES=68, PETRI_TRANSITIONS=33} [2023-11-17 15:21:44,293 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 32 predicate places. [2023-11-17 15:21:44,293 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 33 transitions, 201 flow [2023-11-17 15:21:44,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:44,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:21:44,293 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] [2023-11-17 15:21:44,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-17 15:21:44,293 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 15:21:44,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:21:44,294 INFO L85 PathProgramCache]: Analyzing trace with hash 986283008, now seen corresponding path program 6 times [2023-11-17 15:21:44,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:21:44,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914648625] [2023-11-17 15:21:44,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:21:44,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:21:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:21:44,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:21:44,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:21:44,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914648625] [2023-11-17 15:21:44,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914648625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:21:44,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:21:44,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 15:21:44,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827965136] [2023-11-17 15:21:44,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:21:44,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 15:21:44,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:21:44,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 15:21:44,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 15:21:44,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 399 [2023-11-17 15:21:44,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 33 transitions, 201 flow. Second operand has 7 states, 7 states have (on average 131.0) internal successors, (917), 7 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:44,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:21:44,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 399 [2023-11-17 15:21:44,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:21:44,733 INFO L124 PetriNetUnfolderBase]: 8/69 cut-off events. [2023-11-17 15:21:44,733 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2023-11-17 15:21:44,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 69 events. 8/69 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 149 event pairs, 5 based on Foata normal form. 1/70 useless extension candidates. Maximal degree in co-relation 245. Up to 31 conditions per place. [2023-11-17 15:21:44,734 INFO L140 encePairwiseOnDemand]: 393/399 looper letters, 22 selfloop transitions, 4 changer transitions 13/39 dead transitions. [2023-11-17 15:21:44,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 39 transitions, 288 flow [2023-11-17 15:21:44,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:21:44,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:21:44,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 800 transitions. [2023-11-17 15:21:44,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3341687552213868 [2023-11-17 15:21:44,735 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 800 transitions. [2023-11-17 15:21:44,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 800 transitions. [2023-11-17 15:21:44,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:21:44,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 800 transitions. [2023-11-17 15:21:44,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 133.33333333333334) internal successors, (800), 6 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:44,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:44,738 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:44,738 INFO L175 Difference]: Start difference. First operand has 68 places, 33 transitions, 201 flow. Second operand 6 states and 800 transitions. [2023-11-17 15:21:44,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 39 transitions, 288 flow [2023-11-17 15:21:44,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 39 transitions, 252 flow, removed 4 selfloop flow, removed 12 redundant places. [2023-11-17 15:21:44,739 INFO L231 Difference]: Finished difference. Result has 54 places, 26 transitions, 126 flow [2023-11-17 15:21:44,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=126, PETRI_PLACES=54, PETRI_TRANSITIONS=26} [2023-11-17 15:21:44,740 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 18 predicate places. [2023-11-17 15:21:44,740 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 26 transitions, 126 flow [2023-11-17 15:21:44,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 131.0) internal successors, (917), 7 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:44,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:21:44,740 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] [2023-11-17 15:21:44,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-17 15:21:44,740 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 15:21:44,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:21:44,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1194298513, now seen corresponding path program 21 times [2023-11-17 15:21:44,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:21:44,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491780573] [2023-11-17 15:21:44,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:21:44,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:21:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:21:45,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:21:45,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:21:45,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491780573] [2023-11-17 15:21:45,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491780573] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:21:45,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:21:45,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-17 15:21:45,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706716378] [2023-11-17 15:21:45,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:21:45,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:21:45,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:21:45,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:21:45,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:21:45,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 399 [2023-11-17 15:21:45,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 26 transitions, 126 flow. Second operand has 15 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:45,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:21:45,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 399 [2023-11-17 15:21:45,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:21:46,065 INFO L124 PetriNetUnfolderBase]: 1/38 cut-off events. [2023-11-17 15:21:46,065 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-11-17 15:21:46,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 38 events. 1/38 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 1/39 useless extension candidates. Maximal degree in co-relation 121. Up to 13 conditions per place. [2023-11-17 15:21:46,065 INFO L140 encePairwiseOnDemand]: 389/399 looper letters, 18 selfloop transitions, 3 changer transitions 16/37 dead transitions. [2023-11-17 15:21:46,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 37 transitions, 232 flow [2023-11-17 15:21:46,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 15:21:46,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 15:21:46,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1390 transitions. [2023-11-17 15:21:46,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3167008430166325 [2023-11-17 15:21:46,067 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1390 transitions. [2023-11-17 15:21:46,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1390 transitions. [2023-11-17 15:21:46,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:21:46,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1390 transitions. [2023-11-17 15:21:46,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 126.36363636363636) internal successors, (1390), 11 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:46,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 399.0) internal successors, (4788), 12 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:46,070 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 399.0) internal successors, (4788), 12 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:46,070 INFO L175 Difference]: Start difference. First operand has 54 places, 26 transitions, 126 flow. Second operand 11 states and 1390 transitions. [2023-11-17 15:21:46,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 37 transitions, 232 flow [2023-11-17 15:21:46,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 37 transitions, 190 flow, removed 2 selfloop flow, removed 12 redundant places. [2023-11-17 15:21:46,071 INFO L231 Difference]: Finished difference. Result has 50 places, 21 transitions, 77 flow [2023-11-17 15:21:46,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=77, PETRI_PLACES=50, PETRI_TRANSITIONS=21} [2023-11-17 15:21:46,072 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 14 predicate places. [2023-11-17 15:21:46,072 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 21 transitions, 77 flow [2023-11-17 15:21:46,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:46,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:21:46,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:21:46,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-17 15:21:46,072 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 15:21:46,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:21:46,073 INFO L85 PathProgramCache]: Analyzing trace with hash 728984471, now seen corresponding path program 22 times [2023-11-17 15:21:46,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:21:46,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133769947] [2023-11-17 15:21:46,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:21:46,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:21:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:21:46,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:21:46,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:21:46,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133769947] [2023-11-17 15:21:46,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133769947] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:21:46,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:21:46,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-17 15:21:46,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127019500] [2023-11-17 15:21:46,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:21:46,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:21:46,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:21:46,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:21:46,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:21:46,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 399 [2023-11-17 15:21:46,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 21 transitions, 77 flow. Second operand has 15 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:46,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:21:46,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 399 [2023-11-17 15:21:46,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:21:47,130 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2023-11-17 15:21:47,130 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-17 15:21:47,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 20 events. 0/20 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/21 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2023-11-17 15:21:47,130 INFO L140 encePairwiseOnDemand]: 389/399 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-11-17 15:21:47,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 20 transitions, 112 flow [2023-11-17 15:21:47,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 15:21:47,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 15:21:47,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1374 transitions. [2023-11-17 15:21:47,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31305536568694464 [2023-11-17 15:21:47,132 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1374 transitions. [2023-11-17 15:21:47,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1374 transitions. [2023-11-17 15:21:47,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:21:47,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1374 transitions. [2023-11-17 15:21:47,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 124.9090909090909) internal successors, (1374), 11 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:47,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 399.0) internal successors, (4788), 12 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:47,135 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 399.0) internal successors, (4788), 12 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:47,135 INFO L175 Difference]: Start difference. First operand has 50 places, 21 transitions, 77 flow. Second operand 11 states and 1374 transitions. [2023-11-17 15:21:47,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 20 transitions, 112 flow [2023-11-17 15:21:47,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 20 transitions, 86 flow, removed 4 selfloop flow, removed 12 redundant places. [2023-11-17 15:21:47,136 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2023-11-17 15:21:47,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2023-11-17 15:21:47,136 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2023-11-17 15:21:47,136 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2023-11-17 15:21:47,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:21:47,138 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2023-11-17 15:21:47,139 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2023-11-17 15:21:47,139 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2023-11-17 15:21:47,139 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2023-11-17 15:21:47,139 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2023-11-17 15:21:47,139 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2023-11-17 15:21:47,139 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-11-17 15:21:47,139 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-11-17 15:21:47,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-17 15:21:47,139 INFO L445 BasicCegarLoop]: Path program histogram: [22, 6, 1, 1, 1, 1] [2023-11-17 15:21:47,142 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 15:21:47,142 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 15:21:47,144 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:21:47 BasicIcfg [2023-11-17 15:21:47,144 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 15:21:47,144 INFO L158 Benchmark]: Toolchain (without parser) took 81850.20ms. Allocated memory was 359.7MB in the beginning and 867.2MB in the end (delta: 507.5MB). Free memory was 305.7MB in the beginning and 618.9MB in the end (delta: -313.2MB). Peak memory consumption was 195.3MB. Max. memory is 8.0GB. [2023-11-17 15:21:47,144 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 209.7MB. Free memory is still 155.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:21:47,145 INFO L158 Benchmark]: CACSL2BoogieTranslator took 644.53ms. Allocated memory is still 359.7MB. Free memory was 305.3MB in the beginning and 319.3MB in the end (delta: -14.1MB). Peak memory consumption was 60.7MB. Max. memory is 8.0GB. [2023-11-17 15:21:47,145 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.66ms. Allocated memory is still 359.7MB. Free memory was 319.3MB in the beginning and 315.7MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 15:21:47,145 INFO L158 Benchmark]: Boogie Preprocessor took 29.98ms. Allocated memory is still 359.7MB. Free memory was 315.7MB in the beginning and 313.1MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 15:21:47,145 INFO L158 Benchmark]: RCFGBuilder took 442.12ms. Allocated memory is still 359.7MB. Free memory was 312.5MB in the beginning and 286.8MB in the end (delta: 25.7MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2023-11-17 15:21:47,148 INFO L158 Benchmark]: TraceAbstraction took 80668.67ms. Allocated memory was 359.7MB in the beginning and 867.2MB in the end (delta: 507.5MB). Free memory was 286.3MB in the beginning and 618.9MB in the end (delta: -332.6MB). Peak memory consumption was 175.4MB. Max. memory is 8.0GB. [2023-11-17 15:21:47,149 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 209.7MB. Free memory is still 155.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 644.53ms. Allocated memory is still 359.7MB. Free memory was 305.3MB in the beginning and 319.3MB in the end (delta: -14.1MB). Peak memory consumption was 60.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 60.66ms. Allocated memory is still 359.7MB. Free memory was 319.3MB in the beginning and 315.7MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.98ms. Allocated memory is still 359.7MB. Free memory was 315.7MB in the beginning and 313.1MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 442.12ms. Allocated memory is still 359.7MB. Free memory was 312.5MB in the beginning and 286.8MB in the end (delta: 25.7MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. * TraceAbstraction took 80668.67ms. Allocated memory was 359.7MB in the beginning and 867.2MB in the end (delta: 507.5MB). Free memory was 286.3MB in the beginning and 618.9MB in the end (delta: -332.6MB). Peak memory consumption was 175.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 45.3s, 182 PlacesBefore, 36 PlacesAfterwards, 182 TransitionsBefore, 32 TransitionsAfterwards, 3536 CoEnabledTransitionPairs, 8 FixpointIterations, 112 TrivialSequentialCompositions, 61 ConcurrentSequentialCompositions, 13 TrivialYvCompositions, 11 ConcurrentYvCompositions, 4 ChoiceCompositions, 201 TotalNumberOfCompositions, 6763 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3564, independent: 3335, independent conditional: 0, independent unconditional: 3335, dependent: 164, dependent conditional: 0, dependent unconditional: 164, unknown: 65, unknown conditional: 0, unknown unconditional: 65] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2427, independent: 2358, independent conditional: 0, independent unconditional: 2358, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 15, unknown conditional: 0, unknown unconditional: 15] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2427, independent: 2355, independent conditional: 0, independent unconditional: 2355, dependent: 72, dependent conditional: 0, dependent unconditional: 72, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 72, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 15, unknown conditional: 0, unknown unconditional: 15] , SemanticIndependenceRelation.Query Time [ms]: [ total: 34467, independent: 11, independent conditional: 0, independent unconditional: 11, dependent: 2055, dependent conditional: 0, dependent unconditional: 2055, unknown: 32401, unknown conditional: 0, unknown unconditional: 32401] ], Cache Queries: [ total: 3564, independent: 977, independent conditional: 0, independent unconditional: 977, dependent: 110, dependent conditional: 0, dependent unconditional: 110, unknown: 2477, unknown conditional: 0, unknown unconditional: 2477] , Statistics on independence cache: Total cache size (in pairs): 99, Positive cache size: 84, Positive conditional cache size: 0, Positive unconditional cache size: 84, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 9, Unknown conditional cache size: 0, Unknown unconditional cache size: 9 - PositiveResult [Line: 1693]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 210 locations, 8 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: 80.5s, OverallIterations: 32, TraceHistogramMax: 1, PathProgramHistogramMax: 22, EmptinessCheckTime: 0.0s, AutomataDifference: 11.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 45.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 856 SdHoareTripleChecker+Valid, 6.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 856 mSDsluCounter, 50 SdHoareTripleChecker+Invalid, 5.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 347 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9916 IncrementalHoareTripleChecker+Invalid, 10263 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 347 mSolverCounterUnsat, 34 mSDtfsCounter, 9916 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 466 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 426 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 968 ImplicationChecksByTransitivity, 7.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=617occurred in iteration=15, InterpolantAutomatonStates: 276, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 21.8s InterpolantComputationTime, 608 NumberOfCodeBlocks, 608 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 576 ConstructedInterpolants, 0 QuantifiedInterpolants, 11807 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 32 InterpolantComputations, 32 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-17 15:21:47,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...