/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-races/race-2_1-container_of.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:30:21,356 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:30:21,431 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 11:30:21,455 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:30:21,457 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:30:21,457 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:30:21,458 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:30:21,458 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:30:21,458 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:30:21,461 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:30:21,462 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:30:21,462 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:30:21,463 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:30:21,463 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:30:21,464 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:30:21,464 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:30:21,464 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:30:21,464 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:30:21,464 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:30:21,464 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:30:21,465 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:30:21,465 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:30:21,465 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:30:21,466 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:30:21,467 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:30:21,467 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:30:21,467 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:30:21,467 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:30:21,467 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:30:21,467 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:30:21,468 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:30:21,468 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:30:21,468 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:30:21,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:30:21,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:30:21,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:30:21,697 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:30:21,697 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:30:21,698 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_1-container_of.i [2023-11-17 11:30:22,838 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:30:23,135 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:30:23,135 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i [2023-11-17 11:30:23,153 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8289b4c9/1796b910741a42a891b250dded0d0838/FLAG6cb4abb62 [2023-11-17 11:30:23,167 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8289b4c9/1796b910741a42a891b250dded0d0838 [2023-11-17 11:30:23,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:30:23,170 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:30:23,171 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:30:23,171 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:30:23,174 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:30:23,174 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:30:23" (1/1) ... [2023-11-17 11:30:23,176 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c895cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:23, skipping insertion in model container [2023-11-17 11:30:23,176 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:30:23" (1/1) ... [2023-11-17 11:30:23,230 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:30:23,668 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-2_1-container_of.i[76077,76090] [2023-11-17 11:30:23,720 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:30:23,728 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:30:23,779 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-2_1-container_of.i[76077,76090] [2023-11-17 11:30:23,798 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:30:23,941 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:30:23,942 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:23 WrapperNode [2023-11-17 11:30:23,942 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:30:23,943 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:30:23,943 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:30:23,943 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:30:23,948 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:23" (1/1) ... [2023-11-17 11:30:23,972 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:23" (1/1) ... [2023-11-17 11:30:23,992 INFO L138 Inliner]: procedures = 483, calls = 47, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 134 [2023-11-17 11:30:23,993 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:30:23,994 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:30:23,994 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:30:23,994 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:30:24,000 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:23" (1/1) ... [2023-11-17 11:30:24,001 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:23" (1/1) ... [2023-11-17 11:30:24,004 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:23" (1/1) ... [2023-11-17 11:30:24,004 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:23" (1/1) ... [2023-11-17 11:30:24,018 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:23" (1/1) ... [2023-11-17 11:30:24,019 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:23" (1/1) ... [2023-11-17 11:30:24,022 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:23" (1/1) ... [2023-11-17 11:30:24,023 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:23" (1/1) ... [2023-11-17 11:30:24,027 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:30:24,028 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:30:24,028 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:30:24,028 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:30:24,029 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:23" (1/1) ... [2023-11-17 11:30:24,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:30:24,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:30:24,060 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 11:30:24,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 11:30:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:30:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 11:30:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-17 11:30:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:30:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-17 11:30:24,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:30:24,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:30:24,098 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-11-17 11:30:24,098 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-11-17 11:30:24,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:30:24,099 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-17 11:30:24,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:30:24,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:30:24,103 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 11:30:24,396 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:30:24,398 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:30:24,627 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:30:24,763 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:30:24,764 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 11:30:24,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:30:24 BoogieIcfgContainer [2023-11-17 11:30:24,766 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:30:24,768 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:30:24,768 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:30:24,770 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:30:24,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:30:23" (1/3) ... [2023-11-17 11:30:24,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4beded24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:30:24, skipping insertion in model container [2023-11-17 11:30:24,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:23" (2/3) ... [2023-11-17 11:30:24,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4beded24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:30:24, skipping insertion in model container [2023-11-17 11:30:24,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:30:24" (3/3) ... [2023-11-17 11:30:24,772 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_1-container_of.i [2023-11-17 11:30:24,786 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:30:24,787 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-17 11:30:24,787 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:30:24,825 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 11:30:24,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 60 transitions, 134 flow [2023-11-17 11:30:24,888 INFO L124 PetriNetUnfolderBase]: 10/73 cut-off events. [2023-11-17 11:30:24,888 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 11:30:24,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 73 events. 10/73 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 145 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 39. Up to 4 conditions per place. [2023-11-17 11:30:24,892 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 60 transitions, 134 flow [2023-11-17 11:30:24,896 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 53 transitions, 118 flow [2023-11-17 11:30:24,903 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:30:24,912 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 53 transitions, 118 flow [2023-11-17 11:30:24,914 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 53 transitions, 118 flow [2023-11-17 11:30:24,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 53 transitions, 118 flow [2023-11-17 11:30:24,923 INFO L124 PetriNetUnfolderBase]: 7/64 cut-off events. [2023-11-17 11:30:24,923 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 11:30:24,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 64 events. 7/64 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 122 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 34. Up to 4 conditions per place. [2023-11-17 11:30:24,924 INFO L119 LiptonReduction]: Number of co-enabled transitions 330 [2023-11-17 11:30:40,247 INFO L134 LiptonReduction]: Checked pairs total: 838 [2023-11-17 11:30:40,247 INFO L136 LiptonReduction]: Total number of compositions: 49 [2023-11-17 11:30:40,258 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:30:40,263 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;@21a2a3f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:30:40,264 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-17 11:30:40,264 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:30:40,265 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-17 11:30:40,265 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:30:40,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:40,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-17 11:30:40,266 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 11:30:40,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:40,269 INFO L85 PathProgramCache]: Analyzing trace with hash 503, now seen corresponding path program 1 times [2023-11-17 11:30:40,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:40,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160552203] [2023-11-17 11:30:40,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:40,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:40,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:40,426 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 11:30:40,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:40,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160552203] [2023-11-17 11:30:40,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160552203] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:40,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:40,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-17 11:30:40,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853843689] [2023-11-17 11:30:40,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:40,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-17 11:30:40,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:40,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-17 11:30:40,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-17 11:30:40,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:30:40,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 60 flow. Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:40,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:40,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:30:40,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:40,566 INFO L124 PetriNetUnfolderBase]: 142/263 cut-off events. [2023-11-17 11:30:40,567 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-17 11:30:40,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 263 events. 142/263 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 892 event pairs, 141 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 484. Up to 264 conditions per place. [2023-11-17 11:30:40,571 INFO L140 encePairwiseOnDemand]: 107/109 looper letters, 22 selfloop transitions, 0 changer transitions 0/22 dead transitions. [2023-11-17 11:30:40,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 22 transitions, 100 flow [2023-11-17 11:30:40,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 11:30:40,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-17 11:30:40,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 68 transitions. [2023-11-17 11:30:40,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3119266055045872 [2023-11-17 11:30:40,582 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 68 transitions. [2023-11-17 11:30:40,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 68 transitions. [2023-11-17 11:30:40,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:40,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 68 transitions. [2023-11-17 11:30:40,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:40,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:40,593 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:40,594 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 60 flow. Second operand 2 states and 68 transitions. [2023-11-17 11:30:40,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 22 transitions, 100 flow [2023-11-17 11:30:40,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 22 transitions, 92 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 11:30:40,598 INFO L231 Difference]: Finished difference. Result has 24 places, 22 transitions, 48 flow [2023-11-17 11:30:40,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=48, PETRI_PLACES=24, PETRI_TRANSITIONS=22} [2023-11-17 11:30:40,604 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -5 predicate places. [2023-11-17 11:30:40,604 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 22 transitions, 48 flow [2023-11-17 11:30:40,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:40,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:40,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-17 11:30:40,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:30:40,605 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 11:30:40,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:40,613 INFO L85 PathProgramCache]: Analyzing trace with hash 507421, now seen corresponding path program 1 times [2023-11-17 11:30:40,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:40,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779722222] [2023-11-17 11:30:40,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:40,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:40,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:40,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:40,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779722222] [2023-11-17 11:30:40,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779722222] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:40,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:40,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:30:40,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945922390] [2023-11-17 11:30:40,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:40,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:30:40,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:40,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:30:40,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:30:40,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:30:40,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 22 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:40,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:40,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:30:40,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:41,055 INFO L124 PetriNetUnfolderBase]: 154/294 cut-off events. [2023-11-17 11:30:41,056 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 11:30:41,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 596 conditions, 294 events. 154/294 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1158 event pairs, 99 based on Foata normal form. 0/262 useless extension candidates. Maximal degree in co-relation 593. Up to 228 conditions per place. [2023-11-17 11:30:41,062 INFO L140 encePairwiseOnDemand]: 104/109 looper letters, 25 selfloop transitions, 4 changer transitions 0/29 dead transitions. [2023-11-17 11:30:41,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 29 transitions, 120 flow [2023-11-17 11:30:41,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:30:41,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:30:41,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2023-11-17 11:30:41,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29357798165137616 [2023-11-17 11:30:41,066 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 96 transitions. [2023-11-17 11:30:41,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 96 transitions. [2023-11-17 11:30:41,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:41,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 96 transitions. [2023-11-17 11:30:41,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:41,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 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 11:30:41,071 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 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 11:30:41,071 INFO L175 Difference]: Start difference. First operand has 24 places, 22 transitions, 48 flow. Second operand 3 states and 96 transitions. [2023-11-17 11:30:41,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 29 transitions, 120 flow [2023-11-17 11:30:41,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 29 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 11:30:41,072 INFO L231 Difference]: Finished difference. Result has 27 places, 24 transitions, 70 flow [2023-11-17 11:30:41,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=27, PETRI_TRANSITIONS=24} [2023-11-17 11:30:41,073 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -2 predicate places. [2023-11-17 11:30:41,073 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 24 transitions, 70 flow [2023-11-17 11:30:41,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:41,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:41,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-17 11:30:41,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:30:41,075 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 11:30:41,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:41,079 INFO L85 PathProgramCache]: Analyzing trace with hash 507398, now seen corresponding path program 1 times [2023-11-17 11:30:41,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:41,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093897911] [2023-11-17 11:30:41,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:41,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:41,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:41,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:41,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093897911] [2023-11-17 11:30:41,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093897911] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:41,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:41,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:30:41,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089501525] [2023-11-17 11:30:41,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:41,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:30:41,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:41,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:30:41,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:30:41,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 109 [2023-11-17 11:30:41,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 24 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:41,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:41,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 109 [2023-11-17 11:30:41,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:41,305 INFO L124 PetriNetUnfolderBase]: 114/225 cut-off events. [2023-11-17 11:30:41,305 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2023-11-17 11:30:41,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 542 conditions, 225 events. 114/225 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 824 event pairs, 77 based on Foata normal form. 29/252 useless extension candidates. Maximal degree in co-relation 537. Up to 168 conditions per place. [2023-11-17 11:30:41,306 INFO L140 encePairwiseOnDemand]: 105/109 looper letters, 25 selfloop transitions, 2 changer transitions 2/29 dead transitions. [2023-11-17 11:30:41,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 29 transitions, 142 flow [2023-11-17 11:30:41,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:30:41,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:30:41,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2023-11-17 11:30:41,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.17737003058103976 [2023-11-17 11:30:41,308 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 58 transitions. [2023-11-17 11:30:41,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 58 transitions. [2023-11-17 11:30:41,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:41,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 58 transitions. [2023-11-17 11:30:41,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:41,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 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 11:30:41,310 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 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 11:30:41,310 INFO L175 Difference]: Start difference. First operand has 27 places, 24 transitions, 70 flow. Second operand 3 states and 58 transitions. [2023-11-17 11:30:41,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 29 transitions, 142 flow [2023-11-17 11:30:41,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 29 transitions, 138 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:30:41,313 INFO L231 Difference]: Finished difference. Result has 27 places, 21 transitions, 62 flow [2023-11-17 11:30:41,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=27, PETRI_TRANSITIONS=21} [2023-11-17 11:30:41,314 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -2 predicate places. [2023-11-17 11:30:41,314 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 21 transitions, 62 flow [2023-11-17 11:30:41,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:41,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:41,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:41,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 11:30:41,315 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 11:30:41,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:41,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1613609563, now seen corresponding path program 1 times [2023-11-17 11:30:41,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:41,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798073738] [2023-11-17 11:30:41,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:41,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:41,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:41,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:41,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798073738] [2023-11-17 11:30:41,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798073738] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:41,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:41,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:30:41,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213444652] [2023-11-17 11:30:41,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:41,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:30:41,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:41,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:30:41,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:30:41,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 109 [2023-11-17 11:30:41,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 21 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:41,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:41,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 109 [2023-11-17 11:30:41,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:41,477 INFO L124 PetriNetUnfolderBase]: 69/137 cut-off events. [2023-11-17 11:30:41,478 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2023-11-17 11:30:41,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 137 events. 69/137 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 410 event pairs, 15 based on Foata normal form. 16/152 useless extension candidates. Maximal degree in co-relation 307. Up to 97 conditions per place. [2023-11-17 11:30:41,478 INFO L140 encePairwiseOnDemand]: 107/109 looper letters, 22 selfloop transitions, 1 changer transitions 0/23 dead transitions. [2023-11-17 11:30:41,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 23 transitions, 104 flow [2023-11-17 11:30:41,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:30:41,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:30:41,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2023-11-17 11:30:41,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26605504587155965 [2023-11-17 11:30:41,481 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 87 transitions. [2023-11-17 11:30:41,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 87 transitions. [2023-11-17 11:30:41,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:41,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 87 transitions. [2023-11-17 11:30:41,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:41,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 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 11:30:41,484 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 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 11:30:41,484 INFO L175 Difference]: Start difference. First operand has 27 places, 21 transitions, 62 flow. Second operand 3 states and 87 transitions. [2023-11-17 11:30:41,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 23 transitions, 104 flow [2023-11-17 11:30:41,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 23 transitions, 104 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 11:30:41,485 INFO L231 Difference]: Finished difference. Result has 25 places, 17 transitions, 44 flow [2023-11-17 11:30:41,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2023-11-17 11:30:41,486 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -4 predicate places. [2023-11-17 11:30:41,486 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 44 flow [2023-11-17 11:30:41,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:41,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:41,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:41,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 11:30:41,486 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 11:30:41,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:41,487 INFO L85 PathProgramCache]: Analyzing trace with hash -343953478, now seen corresponding path program 1 times [2023-11-17 11:30:41,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:41,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607306965] [2023-11-17 11:30:41,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:41,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:42,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:42,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:42,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607306965] [2023-11-17 11:30:42,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607306965] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:42,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:42,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 11:30:42,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366977704] [2023-11-17 11:30:42,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:42,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:30:42,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:42,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:30:42,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:30:42,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:30:42,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:42,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:42,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:30:42,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:42,264 INFO L124 PetriNetUnfolderBase]: 75/151 cut-off events. [2023-11-17 11:30:42,264 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-11-17 11:30:42,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 151 events. 75/151 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 502 event pairs, 5 based on Foata normal form. 6/156 useless extension candidates. Maximal degree in co-relation 359. Up to 103 conditions per place. [2023-11-17 11:30:42,268 INFO L140 encePairwiseOnDemand]: 102/109 looper letters, 27 selfloop transitions, 10 changer transitions 0/37 dead transitions. [2023-11-17 11:30:42,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 37 transitions, 175 flow [2023-11-17 11:30:42,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:30:42,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:30:42,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 171 transitions. [2023-11-17 11:30:42,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26146788990825687 [2023-11-17 11:30:42,274 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 171 transitions. [2023-11-17 11:30:42,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 171 transitions. [2023-11-17 11:30:42,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:42,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 171 transitions. [2023-11-17 11:30:42,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:42,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:42,277 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:42,277 INFO L175 Difference]: Start difference. First operand has 25 places, 17 transitions, 44 flow. Second operand 6 states and 171 transitions. [2023-11-17 11:30:42,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 37 transitions, 175 flow [2023-11-17 11:30:42,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 37 transitions, 172 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:30:42,279 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 114 flow [2023-11-17 11:30:42,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=114, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2023-11-17 11:30:42,281 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2023-11-17 11:30:42,281 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 114 flow [2023-11-17 11:30:42,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:42,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:42,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:42,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 11:30:42,281 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 11:30:42,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:42,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1642800811, now seen corresponding path program 1 times [2023-11-17 11:30:42,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:42,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906640201] [2023-11-17 11:30:42,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:42,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:43,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:43,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:43,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906640201] [2023-11-17 11:30:43,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906640201] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:43,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:43,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 11:30:43,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846778420] [2023-11-17 11:30:43,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:43,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 11:30:43,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:43,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 11:30:43,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-17 11:30:43,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:30:43,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 114 flow. Second operand has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:43,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:43,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:30:43,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:44,036 INFO L124 PetriNetUnfolderBase]: 94/202 cut-off events. [2023-11-17 11:30:44,036 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2023-11-17 11:30:44,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 670 conditions, 202 events. 94/202 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 702 event pairs, 12 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 660. Up to 139 conditions per place. [2023-11-17 11:30:44,038 INFO L140 encePairwiseOnDemand]: 96/109 looper letters, 45 selfloop transitions, 28 changer transitions 0/73 dead transitions. [2023-11-17 11:30:44,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 73 transitions, 473 flow [2023-11-17 11:30:44,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 11:30:44,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 11:30:44,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 323 transitions. [2023-11-17 11:30:44,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24694189602446484 [2023-11-17 11:30:44,040 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 323 transitions. [2023-11-17 11:30:44,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 323 transitions. [2023-11-17 11:30:44,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:44,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 323 transitions. [2023-11-17 11:30:44,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 26.916666666666668) internal successors, (323), 12 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:44,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 109.0) internal successors, (1417), 13 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:44,043 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 109.0) internal successors, (1417), 13 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:44,043 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 114 flow. Second operand 12 states and 323 transitions. [2023-11-17 11:30:44,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 73 transitions, 473 flow [2023-11-17 11:30:44,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 73 transitions, 473 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 11:30:44,045 INFO L231 Difference]: Finished difference. Result has 51 places, 54 transitions, 368 flow [2023-11-17 11:30:44,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=368, PETRI_PLACES=51, PETRI_TRANSITIONS=54} [2023-11-17 11:30:44,045 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2023-11-17 11:30:44,045 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 54 transitions, 368 flow [2023-11-17 11:30:44,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:44,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:44,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:44,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 11:30:44,046 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 11:30:44,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:44,046 INFO L85 PathProgramCache]: Analyzing trace with hash -916353853, now seen corresponding path program 2 times [2023-11-17 11:30:44,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:44,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90950127] [2023-11-17 11:30:44,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:44,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:44,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:44,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:44,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90950127] [2023-11-17 11:30:44,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90950127] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:44,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:44,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 11:30:44,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71573488] [2023-11-17 11:30:44,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:44,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:30:44,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:44,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:30:44,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:30:44,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:30:44,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 54 transitions, 368 flow. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:44,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:44,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:30:44,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:44,516 INFO L124 PetriNetUnfolderBase]: 96/214 cut-off events. [2023-11-17 11:30:44,516 INFO L125 PetriNetUnfolderBase]: For 379/379 co-relation queries the response was YES. [2023-11-17 11:30:44,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 912 conditions, 214 events. 96/214 cut-off events. For 379/379 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 801 event pairs, 18 based on Foata normal form. 6/219 useless extension candidates. Maximal degree in co-relation 894. Up to 99 conditions per place. [2023-11-17 11:30:44,518 INFO L140 encePairwiseOnDemand]: 102/109 looper letters, 49 selfloop transitions, 34 changer transitions 0/83 dead transitions. [2023-11-17 11:30:44,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 83 transitions, 721 flow [2023-11-17 11:30:44,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:30:44,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:30:44,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 194 transitions. [2023-11-17 11:30:44,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.254259501965924 [2023-11-17 11:30:44,519 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 194 transitions. [2023-11-17 11:30:44,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 194 transitions. [2023-11-17 11:30:44,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:44,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 194 transitions. [2023-11-17 11:30:44,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 27.714285714285715) internal successors, (194), 7 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:44,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 109.0) internal successors, (872), 8 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:44,521 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 109.0) internal successors, (872), 8 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:44,521 INFO L175 Difference]: Start difference. First operand has 51 places, 54 transitions, 368 flow. Second operand 7 states and 194 transitions. [2023-11-17 11:30:44,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 83 transitions, 721 flow [2023-11-17 11:30:44,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 83 transitions, 697 flow, removed 11 selfloop flow, removed 1 redundant places. [2023-11-17 11:30:44,528 INFO L231 Difference]: Finished difference. Result has 58 places, 66 transitions, 545 flow [2023-11-17 11:30:44,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=545, PETRI_PLACES=58, PETRI_TRANSITIONS=66} [2023-11-17 11:30:44,529 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2023-11-17 11:30:44,530 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 66 transitions, 545 flow [2023-11-17 11:30:44,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:44,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:44,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:44,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 11:30:44,530 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 11:30:44,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:44,531 INFO L85 PathProgramCache]: Analyzing trace with hash -591532477, now seen corresponding path program 3 times [2023-11-17 11:30:44,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:44,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984911533] [2023-11-17 11:30:44,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:44,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:45,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:45,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:45,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984911533] [2023-11-17 11:30:45,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984911533] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:45,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:45,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 11:30:45,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996156072] [2023-11-17 11:30:45,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:45,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 11:30:45,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:45,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 11:30:45,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-17 11:30:45,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:30:45,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 66 transitions, 545 flow. Second operand has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:45,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:45,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:30:45,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:46,067 INFO L124 PetriNetUnfolderBase]: 100/230 cut-off events. [2023-11-17 11:30:46,068 INFO L125 PetriNetUnfolderBase]: For 673/673 co-relation queries the response was YES. [2023-11-17 11:30:46,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1102 conditions, 230 events. 100/230 cut-off events. For 673/673 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 897 event pairs, 18 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 1081. Up to 175 conditions per place. [2023-11-17 11:30:46,070 INFO L140 encePairwiseOnDemand]: 97/109 looper letters, 60 selfloop transitions, 33 changer transitions 0/93 dead transitions. [2023-11-17 11:30:46,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 93 transitions, 914 flow [2023-11-17 11:30:46,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 11:30:46,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 11:30:46,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 298 transitions. [2023-11-17 11:30:46,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24854045037531275 [2023-11-17 11:30:46,071 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 298 transitions. [2023-11-17 11:30:46,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 298 transitions. [2023-11-17 11:30:46,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:46,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 298 transitions. [2023-11-17 11:30:46,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 27.09090909090909) internal successors, (298), 11 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:46,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 109.0) internal successors, (1308), 12 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:46,074 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 109.0) internal successors, (1308), 12 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:46,074 INFO L175 Difference]: Start difference. First operand has 58 places, 66 transitions, 545 flow. Second operand 11 states and 298 transitions. [2023-11-17 11:30:46,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 93 transitions, 914 flow [2023-11-17 11:30:46,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 93 transitions, 850 flow, removed 15 selfloop flow, removed 3 redundant places. [2023-11-17 11:30:46,078 INFO L231 Difference]: Finished difference. Result has 68 places, 74 transitions, 643 flow [2023-11-17 11:30:46,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=643, PETRI_PLACES=68, PETRI_TRANSITIONS=74} [2023-11-17 11:30:46,079 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 39 predicate places. [2023-11-17 11:30:46,079 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 74 transitions, 643 flow [2023-11-17 11:30:46,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:46,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:46,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:46,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 11:30:46,079 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 11:30:46,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:46,080 INFO L85 PathProgramCache]: Analyzing trace with hash 812027224, now seen corresponding path program 2 times [2023-11-17 11:30:46,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:46,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816860731] [2023-11-17 11:30:46,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:46,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:46,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:46,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:46,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816860731] [2023-11-17 11:30:46,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816860731] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:46,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:46,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 11:30:46,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993790700] [2023-11-17 11:30:46,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:46,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:30:46,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:46,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:30:46,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:30:46,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:30:46,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 74 transitions, 643 flow. Second operand has 8 states, 8 states have (on average 24.0) internal successors, (192), 8 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:46,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:46,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:30:46,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:46,729 INFO L124 PetriNetUnfolderBase]: 115/279 cut-off events. [2023-11-17 11:30:46,729 INFO L125 PetriNetUnfolderBase]: For 677/677 co-relation queries the response was YES. [2023-11-17 11:30:46,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1335 conditions, 279 events. 115/279 cut-off events. For 677/677 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1257 event pairs, 8 based on Foata normal form. 1/278 useless extension candidates. Maximal degree in co-relation 1311. Up to 90 conditions per place. [2023-11-17 11:30:46,731 INFO L140 encePairwiseOnDemand]: 100/109 looper letters, 67 selfloop transitions, 37 changer transitions 7/111 dead transitions. [2023-11-17 11:30:46,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 111 transitions, 1091 flow [2023-11-17 11:30:46,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 11:30:46,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 11:30:46,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 226 transitions. [2023-11-17 11:30:46,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2591743119266055 [2023-11-17 11:30:46,733 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 226 transitions. [2023-11-17 11:30:46,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 226 transitions. [2023-11-17 11:30:46,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:46,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 226 transitions. [2023-11-17 11:30:46,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 28.25) internal successors, (226), 8 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:46,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 109.0) internal successors, (981), 9 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:46,735 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 109.0) internal successors, (981), 9 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:46,735 INFO L175 Difference]: Start difference. First operand has 68 places, 74 transitions, 643 flow. Second operand 8 states and 226 transitions. [2023-11-17 11:30:46,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 111 transitions, 1091 flow [2023-11-17 11:30:46,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 111 transitions, 1052 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-17 11:30:46,740 INFO L231 Difference]: Finished difference. Result has 73 places, 74 transitions, 694 flow [2023-11-17 11:30:46,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=694, PETRI_PLACES=73, PETRI_TRANSITIONS=74} [2023-11-17 11:30:46,741 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 44 predicate places. [2023-11-17 11:30:46,741 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 74 transitions, 694 flow [2023-11-17 11:30:46,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.0) internal successors, (192), 8 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:46,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:46,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:46,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 11:30:46,741 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 11:30:46,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:46,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1066705497, now seen corresponding path program 4 times [2023-11-17 11:30:46,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:46,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553739394] [2023-11-17 11:30:46,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:46,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:46,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:47,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:47,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:47,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553739394] [2023-11-17 11:30:47,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553739394] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:47,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:47,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 11:30:47,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855551977] [2023-11-17 11:30:47,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:47,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 11:30:47,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:47,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 11:30:47,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-17 11:30:47,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:30:47,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 74 transitions, 694 flow. Second operand has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:47,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:47,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:30:47,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:48,144 INFO L124 PetriNetUnfolderBase]: 125/305 cut-off events. [2023-11-17 11:30:48,144 INFO L125 PetriNetUnfolderBase]: For 1212/1212 co-relation queries the response was YES. [2023-11-17 11:30:48,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1606 conditions, 305 events. 125/305 cut-off events. For 1212/1212 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1417 event pairs, 28 based on Foata normal form. 1/304 useless extension candidates. Maximal degree in co-relation 1578. Up to 254 conditions per place. [2023-11-17 11:30:48,147 INFO L140 encePairwiseOnDemand]: 98/109 looper letters, 78 selfloop transitions, 20 changer transitions 9/107 dead transitions. [2023-11-17 11:30:48,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 107 transitions, 1164 flow [2023-11-17 11:30:48,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 11:30:48,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 11:30:48,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 295 transitions. [2023-11-17 11:30:48,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24603836530442036 [2023-11-17 11:30:48,158 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 295 transitions. [2023-11-17 11:30:48,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 295 transitions. [2023-11-17 11:30:48,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:48,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 295 transitions. [2023-11-17 11:30:48,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 26.818181818181817) internal successors, (295), 11 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:48,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 109.0) internal successors, (1308), 12 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:48,160 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 109.0) internal successors, (1308), 12 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:48,161 INFO L175 Difference]: Start difference. First operand has 73 places, 74 transitions, 694 flow. Second operand 11 states and 295 transitions. [2023-11-17 11:30:48,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 107 transitions, 1164 flow [2023-11-17 11:30:48,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 107 transitions, 1069 flow, removed 13 selfloop flow, removed 5 redundant places. [2023-11-17 11:30:48,169 INFO L231 Difference]: Finished difference. Result has 82 places, 83 transitions, 761 flow [2023-11-17 11:30:48,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=761, PETRI_PLACES=82, PETRI_TRANSITIONS=83} [2023-11-17 11:30:48,170 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 53 predicate places. [2023-11-17 11:30:48,171 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 83 transitions, 761 flow [2023-11-17 11:30:48,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:48,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:48,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:48,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 11:30:48,172 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 11:30:48,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:48,172 INFO L85 PathProgramCache]: Analyzing trace with hash 765967003, now seen corresponding path program 5 times [2023-11-17 11:30:48,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:48,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995457925] [2023-11-17 11:30:48,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:48,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:48,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:49,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:49,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:49,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995457925] [2023-11-17 11:30:49,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995457925] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:49,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:49,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 11:30:49,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016657686] [2023-11-17 11:30:49,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:49,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 11:30:49,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:49,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 11:30:49,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-17 11:30:49,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:30:49,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 83 transitions, 761 flow. Second operand has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:49,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:49,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:30:49,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:49,678 INFO L124 PetriNetUnfolderBase]: 142/348 cut-off events. [2023-11-17 11:30:49,678 INFO L125 PetriNetUnfolderBase]: For 1838/1838 co-relation queries the response was YES. [2023-11-17 11:30:49,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1930 conditions, 348 events. 142/348 cut-off events. For 1838/1838 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1719 event pairs, 15 based on Foata normal form. 1/347 useless extension candidates. Maximal degree in co-relation 1897. Up to 247 conditions per place. [2023-11-17 11:30:49,681 INFO L140 encePairwiseOnDemand]: 98/109 looper letters, 90 selfloop transitions, 28 changer transitions 13/131 dead transitions. [2023-11-17 11:30:49,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 131 transitions, 1469 flow [2023-11-17 11:30:49,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 11:30:49,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 11:30:49,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 325 transitions. [2023-11-17 11:30:49,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2484709480122324 [2023-11-17 11:30:49,690 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 325 transitions. [2023-11-17 11:30:49,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 325 transitions. [2023-11-17 11:30:49,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:49,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 325 transitions. [2023-11-17 11:30:49,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 27.083333333333332) internal successors, (325), 12 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:49,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 109.0) internal successors, (1417), 13 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:49,693 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 109.0) internal successors, (1417), 13 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:49,693 INFO L175 Difference]: Start difference. First operand has 82 places, 83 transitions, 761 flow. Second operand 12 states and 325 transitions. [2023-11-17 11:30:49,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 131 transitions, 1469 flow [2023-11-17 11:30:49,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 131 transitions, 1420 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-11-17 11:30:49,703 INFO L231 Difference]: Finished difference. Result has 93 places, 97 transitions, 977 flow [2023-11-17 11:30:49,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=977, PETRI_PLACES=93, PETRI_TRANSITIONS=97} [2023-11-17 11:30:49,703 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 64 predicate places. [2023-11-17 11:30:49,703 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 97 transitions, 977 flow [2023-11-17 11:30:49,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:49,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:49,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:49,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 11:30:49,705 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 11:30:49,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:49,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1313495695, now seen corresponding path program 6 times [2023-11-17 11:30:49,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:49,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117443387] [2023-11-17 11:30:49,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:49,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:49,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:50,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:50,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:50,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117443387] [2023-11-17 11:30:50,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117443387] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:50,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:50,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 11:30:50,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231855155] [2023-11-17 11:30:50,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:50,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 11:30:50,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:50,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 11:30:50,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-17 11:30:50,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:30:50,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 97 transitions, 977 flow. Second operand has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:50,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:50,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:30:50,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:51,109 INFO L124 PetriNetUnfolderBase]: 130/326 cut-off events. [2023-11-17 11:30:51,109 INFO L125 PetriNetUnfolderBase]: For 1975/1975 co-relation queries the response was YES. [2023-11-17 11:30:51,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1958 conditions, 326 events. 130/326 cut-off events. For 1975/1975 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1603 event pairs, 19 based on Foata normal form. 1/325 useless extension candidates. Maximal degree in co-relation 1919. Up to 294 conditions per place. [2023-11-17 11:30:51,112 INFO L140 encePairwiseOnDemand]: 99/109 looper letters, 82 selfloop transitions, 16 changer transitions 14/112 dead transitions. [2023-11-17 11:30:51,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 112 transitions, 1314 flow [2023-11-17 11:30:51,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 11:30:51,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 11:30:51,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 288 transitions. [2023-11-17 11:30:51,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24020016680567138 [2023-11-17 11:30:51,113 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 288 transitions. [2023-11-17 11:30:51,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 288 transitions. [2023-11-17 11:30:51,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:51,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 288 transitions. [2023-11-17 11:30:51,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 26.181818181818183) internal successors, (288), 11 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:51,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 109.0) internal successors, (1308), 12 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:51,116 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 109.0) internal successors, (1308), 12 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:51,116 INFO L175 Difference]: Start difference. First operand has 93 places, 97 transitions, 977 flow. Second operand 11 states and 288 transitions. [2023-11-17 11:30:51,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 112 transitions, 1314 flow [2023-11-17 11:30:51,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 112 transitions, 1252 flow, removed 30 selfloop flow, removed 2 redundant places. [2023-11-17 11:30:51,124 INFO L231 Difference]: Finished difference. Result has 103 places, 95 transitions, 939 flow [2023-11-17 11:30:51,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=915, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=939, PETRI_PLACES=103, PETRI_TRANSITIONS=95} [2023-11-17 11:30:51,124 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 74 predicate places. [2023-11-17 11:30:51,125 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 95 transitions, 939 flow [2023-11-17 11:30:51,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:51,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:51,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:51,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-17 11:30:51,125 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 11:30:51,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:51,125 INFO L85 PathProgramCache]: Analyzing trace with hash -277479749, now seen corresponding path program 7 times [2023-11-17 11:30:51,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:51,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263862919] [2023-11-17 11:30:51,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:51,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:51,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:51,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:51,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263862919] [2023-11-17 11:30:51,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263862919] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:51,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:51,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 11:30:51,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019801120] [2023-11-17 11:30:51,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:51,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:30:51,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:51,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:30:51,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:30:51,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:30:51,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 95 transitions, 939 flow. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:51,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:51,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:30:51,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:51,524 INFO L124 PetriNetUnfolderBase]: 74/212 cut-off events. [2023-11-17 11:30:51,525 INFO L125 PetriNetUnfolderBase]: For 1302/1302 co-relation queries the response was YES. [2023-11-17 11:30:51,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1255 conditions, 212 events. 74/212 cut-off events. For 1302/1302 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 935 event pairs, 14 based on Foata normal form. 6/216 useless extension candidates. Maximal degree in co-relation 1212. Up to 152 conditions per place. [2023-11-17 11:30:51,527 INFO L140 encePairwiseOnDemand]: 103/109 looper letters, 58 selfloop transitions, 30 changer transitions 1/89 dead transitions. [2023-11-17 11:30:51,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 89 transitions, 1064 flow [2023-11-17 11:30:51,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:30:51,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:30:51,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2023-11-17 11:30:51,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24639580602883354 [2023-11-17 11:30:51,528 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 188 transitions. [2023-11-17 11:30:51,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 188 transitions. [2023-11-17 11:30:51,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:51,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 188 transitions. [2023-11-17 11:30:51,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:51,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 109.0) internal successors, (872), 8 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:51,530 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 109.0) internal successors, (872), 8 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:51,530 INFO L175 Difference]: Start difference. First operand has 103 places, 95 transitions, 939 flow. Second operand 7 states and 188 transitions. [2023-11-17 11:30:51,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 89 transitions, 1064 flow [2023-11-17 11:30:51,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 89 transitions, 1010 flow, removed 13 selfloop flow, removed 10 redundant places. [2023-11-17 11:30:51,536 INFO L231 Difference]: Finished difference. Result has 97 places, 85 transitions, 868 flow [2023-11-17 11:30:51,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=868, PETRI_PLACES=97, PETRI_TRANSITIONS=85} [2023-11-17 11:30:51,537 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 68 predicate places. [2023-11-17 11:30:51,537 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 85 transitions, 868 flow [2023-11-17 11:30:51,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:51,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:51,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:51,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-17 11:30:51,538 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 11:30:51,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:51,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1859749869, now seen corresponding path program 8 times [2023-11-17 11:30:51,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:51,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080730849] [2023-11-17 11:30:51,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:51,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:51,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:52,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:52,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:52,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080730849] [2023-11-17 11:30:52,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080730849] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:52,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:52,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 11:30:52,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799395601] [2023-11-17 11:30:52,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:52,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 11:30:52,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:52,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 11:30:52,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-17 11:30:52,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:30:52,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 85 transitions, 868 flow. Second operand has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:52,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:52,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:30:52,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:52,755 INFO L124 PetriNetUnfolderBase]: 79/232 cut-off events. [2023-11-17 11:30:52,756 INFO L125 PetriNetUnfolderBase]: For 1387/1387 co-relation queries the response was YES. [2023-11-17 11:30:52,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1381 conditions, 232 events. 79/232 cut-off events. For 1387/1387 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1075 event pairs, 18 based on Foata normal form. 1/231 useless extension candidates. Maximal degree in co-relation 1340. Up to 192 conditions per place. [2023-11-17 11:30:52,757 INFO L140 encePairwiseOnDemand]: 99/109 looper letters, 72 selfloop transitions, 19 changer transitions 14/105 dead transitions. [2023-11-17 11:30:52,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 105 transitions, 1261 flow [2023-11-17 11:30:52,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 11:30:52,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 11:30:52,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 290 transitions. [2023-11-17 11:30:52,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24186822351959966 [2023-11-17 11:30:52,760 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 290 transitions. [2023-11-17 11:30:52,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 290 transitions. [2023-11-17 11:30:52,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:52,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 290 transitions. [2023-11-17 11:30:52,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 26.363636363636363) internal successors, (290), 11 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:52,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 109.0) internal successors, (1308), 12 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:52,763 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 109.0) internal successors, (1308), 12 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:52,763 INFO L175 Difference]: Start difference. First operand has 97 places, 85 transitions, 868 flow. Second operand 11 states and 290 transitions. [2023-11-17 11:30:52,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 105 transitions, 1261 flow [2023-11-17 11:30:52,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 105 transitions, 1215 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-17 11:30:52,771 INFO L231 Difference]: Finished difference. Result has 108 places, 88 transitions, 915 flow [2023-11-17 11:30:52,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=915, PETRI_PLACES=108, PETRI_TRANSITIONS=88} [2023-11-17 11:30:52,772 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 79 predicate places. [2023-11-17 11:30:52,772 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 88 transitions, 915 flow [2023-11-17 11:30:52,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:52,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:52,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:52,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-17 11:30:52,773 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 11:30:52,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:52,773 INFO L85 PathProgramCache]: Analyzing trace with hash 759659691, now seen corresponding path program 9 times [2023-11-17 11:30:52,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:52,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86820173] [2023-11-17 11:30:52,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:52,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:52,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:53,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:53,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:53,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86820173] [2023-11-17 11:30:53,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86820173] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:53,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:53,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 11:30:53,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657660820] [2023-11-17 11:30:53,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:53,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 11:30:53,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:53,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 11:30:53,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-17 11:30:53,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:30:53,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 88 transitions, 915 flow. Second operand has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:53,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:53,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:30:53,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:54,070 INFO L124 PetriNetUnfolderBase]: 74/221 cut-off events. [2023-11-17 11:30:54,070 INFO L125 PetriNetUnfolderBase]: For 1406/1406 co-relation queries the response was YES. [2023-11-17 11:30:54,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1318 conditions, 221 events. 74/221 cut-off events. For 1406/1406 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1002 event pairs, 14 based on Foata normal form. 1/220 useless extension candidates. Maximal degree in co-relation 1274. Up to 182 conditions per place. [2023-11-17 11:30:54,072 INFO L140 encePairwiseOnDemand]: 99/109 looper letters, 69 selfloop transitions, 19 changer transitions 14/102 dead transitions. [2023-11-17 11:30:54,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 102 transitions, 1260 flow [2023-11-17 11:30:54,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 11:30:54,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 11:30:54,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 312 transitions. [2023-11-17 11:30:54,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.23853211009174313 [2023-11-17 11:30:54,074 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 312 transitions. [2023-11-17 11:30:54,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 312 transitions. [2023-11-17 11:30:54,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:54,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 312 transitions. [2023-11-17 11:30:54,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 26.0) internal successors, (312), 12 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:54,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 109.0) internal successors, (1417), 13 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:54,078 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 109.0) internal successors, (1417), 13 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:54,078 INFO L175 Difference]: Start difference. First operand has 108 places, 88 transitions, 915 flow. Second operand 12 states and 312 transitions. [2023-11-17 11:30:54,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 102 transitions, 1260 flow [2023-11-17 11:30:54,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 102 transitions, 1196 flow, removed 19 selfloop flow, removed 7 redundant places. [2023-11-17 11:30:54,086 INFO L231 Difference]: Finished difference. Result has 112 places, 85 transitions, 888 flow [2023-11-17 11:30:54,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=888, PETRI_PLACES=112, PETRI_TRANSITIONS=85} [2023-11-17 11:30:54,088 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 83 predicate places. [2023-11-17 11:30:54,088 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 85 transitions, 888 flow [2023-11-17 11:30:54,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:54,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:54,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:54,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-17 11:30:54,089 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 11:30:54,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:54,090 INFO L85 PathProgramCache]: Analyzing trace with hash -567708913, now seen corresponding path program 10 times [2023-11-17 11:30:54,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:54,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166807166] [2023-11-17 11:30:54,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:54,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:54,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:54,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:54,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:54,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166807166] [2023-11-17 11:30:54,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166807166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:54,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:54,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 11:30:54,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98233294] [2023-11-17 11:30:54,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:54,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 11:30:54,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:54,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 11:30:54,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-17 11:30:54,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:30:54,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 85 transitions, 888 flow. Second operand has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:54,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:54,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:30:54,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:55,310 INFO L124 PetriNetUnfolderBase]: 67/199 cut-off events. [2023-11-17 11:30:55,310 INFO L125 PetriNetUnfolderBase]: For 1085/1085 co-relation queries the response was YES. [2023-11-17 11:30:55,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1183 conditions, 199 events. 67/199 cut-off events. For 1085/1085 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 853 event pairs, 12 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 1138. Up to 173 conditions per place. [2023-11-17 11:30:55,312 INFO L140 encePairwiseOnDemand]: 98/109 looper letters, 71 selfloop transitions, 22 changer transitions 0/93 dead transitions. [2023-11-17 11:30:55,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 93 transitions, 1152 flow [2023-11-17 11:30:55,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 11:30:55,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 11:30:55,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 285 transitions. [2023-11-17 11:30:55,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.237698081734779 [2023-11-17 11:30:55,314 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 285 transitions. [2023-11-17 11:30:55,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 285 transitions. [2023-11-17 11:30:55,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:55,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 285 transitions. [2023-11-17 11:30:55,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 25.90909090909091) internal successors, (285), 11 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:55,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 109.0) internal successors, (1308), 12 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:55,316 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 109.0) internal successors, (1308), 12 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:55,316 INFO L175 Difference]: Start difference. First operand has 112 places, 85 transitions, 888 flow. Second operand 11 states and 285 transitions. [2023-11-17 11:30:55,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 93 transitions, 1152 flow [2023-11-17 11:30:55,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 93 transitions, 1100 flow, removed 7 selfloop flow, removed 10 redundant places. [2023-11-17 11:30:55,323 INFO L231 Difference]: Finished difference. Result has 110 places, 86 transitions, 919 flow [2023-11-17 11:30:55,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=919, PETRI_PLACES=110, PETRI_TRANSITIONS=86} [2023-11-17 11:30:55,323 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 81 predicate places. [2023-11-17 11:30:55,324 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 86 transitions, 919 flow [2023-11-17 11:30:55,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:55,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:55,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:55,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-17 11:30:55,324 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 11:30:55,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:55,324 INFO L85 PathProgramCache]: Analyzing trace with hash -567708932, now seen corresponding path program 3 times [2023-11-17 11:30:55,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:55,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629116767] [2023-11-17 11:30:55,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:55,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:55,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:55,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:55,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629116767] [2023-11-17 11:30:55,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629116767] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:55,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:55,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 11:30:55,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310505276] [2023-11-17 11:30:55,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:55,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:30:55,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:55,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:30:55,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:30:55,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:30:55,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 86 transitions, 919 flow. Second operand has 8 states, 8 states have (on average 24.0) internal successors, (192), 8 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:55,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:55,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:30:55,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:55,947 INFO L124 PetriNetUnfolderBase]: 66/204 cut-off events. [2023-11-17 11:30:55,948 INFO L125 PetriNetUnfolderBase]: For 1063/1063 co-relation queries the response was YES. [2023-11-17 11:30:55,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1191 conditions, 204 events. 66/204 cut-off events. For 1063/1063 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 899 event pairs, 11 based on Foata normal form. 1/204 useless extension candidates. Maximal degree in co-relation 1147. Up to 98 conditions per place. [2023-11-17 11:30:55,950 INFO L140 encePairwiseOnDemand]: 101/109 looper letters, 63 selfloop transitions, 32 changer transitions 4/99 dead transitions. [2023-11-17 11:30:55,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 99 transitions, 1213 flow [2023-11-17 11:30:55,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 11:30:55,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 11:30:55,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2023-11-17 11:30:55,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24311926605504589 [2023-11-17 11:30:55,951 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 212 transitions. [2023-11-17 11:30:55,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 212 transitions. [2023-11-17 11:30:55,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:55,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 212 transitions. [2023-11-17 11:30:55,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:55,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 109.0) internal successors, (981), 9 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:55,953 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 109.0) internal successors, (981), 9 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:55,953 INFO L175 Difference]: Start difference. First operand has 110 places, 86 transitions, 919 flow. Second operand 8 states and 212 transitions. [2023-11-17 11:30:55,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 99 transitions, 1213 flow [2023-11-17 11:30:55,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 99 transitions, 1162 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-17 11:30:55,961 INFO L231 Difference]: Finished difference. Result has 113 places, 84 transitions, 927 flow [2023-11-17 11:30:55,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=862, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=927, PETRI_PLACES=113, PETRI_TRANSITIONS=84} [2023-11-17 11:30:55,962 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 84 predicate places. [2023-11-17 11:30:55,962 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 84 transitions, 927 flow [2023-11-17 11:30:55,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.0) internal successors, (192), 8 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:55,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:55,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:55,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-17 11:30:55,962 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 11:30:55,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:55,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1263165815, now seen corresponding path program 11 times [2023-11-17 11:30:55,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:55,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051976135] [2023-11-17 11:30:55,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:55,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:56,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:56,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:56,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051976135] [2023-11-17 11:30:56,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051976135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:56,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:56,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 11:30:56,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680091850] [2023-11-17 11:30:56,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:56,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 11:30:56,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:56,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 11:30:56,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-17 11:30:56,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:30:56,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 84 transitions, 927 flow. Second operand has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:56,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:56,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:30:56,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:57,281 INFO L124 PetriNetUnfolderBase]: 65/202 cut-off events. [2023-11-17 11:30:57,281 INFO L125 PetriNetUnfolderBase]: For 1271/1271 co-relation queries the response was YES. [2023-11-17 11:30:57,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1221 conditions, 202 events. 65/202 cut-off events. For 1271/1271 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 895 event pairs, 17 based on Foata normal form. 1/202 useless extension candidates. Maximal degree in co-relation 1175. Up to 177 conditions per place. [2023-11-17 11:30:57,283 INFO L140 encePairwiseOnDemand]: 99/109 looper letters, 67 selfloop transitions, 17 changer transitions 10/94 dead transitions. [2023-11-17 11:30:57,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 94 transitions, 1207 flow [2023-11-17 11:30:57,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 11:30:57,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 11:30:57,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 306 transitions. [2023-11-17 11:30:57,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.23394495412844038 [2023-11-17 11:30:57,285 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 306 transitions. [2023-11-17 11:30:57,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 306 transitions. [2023-11-17 11:30:57,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:57,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 306 transitions. [2023-11-17 11:30:57,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 25.5) internal successors, (306), 12 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:57,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 109.0) internal successors, (1417), 13 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:57,287 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 109.0) internal successors, (1417), 13 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:57,287 INFO L175 Difference]: Start difference. First operand has 113 places, 84 transitions, 927 flow. Second operand 12 states and 306 transitions. [2023-11-17 11:30:57,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 94 transitions, 1207 flow [2023-11-17 11:30:57,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 94 transitions, 1127 flow, removed 14 selfloop flow, removed 6 redundant places. [2023-11-17 11:30:57,295 INFO L231 Difference]: Finished difference. Result has 119 places, 84 transitions, 919 flow [2023-11-17 11:30:57,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=919, PETRI_PLACES=119, PETRI_TRANSITIONS=84} [2023-11-17 11:30:57,295 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 90 predicate places. [2023-11-17 11:30:57,295 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 84 transitions, 919 flow [2023-11-17 11:30:57,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:57,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:57,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:57,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-17 11:30:57,296 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 11:30:57,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:57,296 INFO L85 PathProgramCache]: Analyzing trace with hash -103001015, now seen corresponding path program 12 times [2023-11-17 11:30:57,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:57,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903234652] [2023-11-17 11:30:57,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:57,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:57,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:58,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:58,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:58,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903234652] [2023-11-17 11:30:58,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903234652] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:58,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:58,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 11:30:58,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343307918] [2023-11-17 11:30:58,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:58,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 11:30:58,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:58,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 11:30:58,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-17 11:30:58,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:30:58,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 84 transitions, 919 flow. Second operand has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:58,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:58,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:30:58,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:58,639 INFO L124 PetriNetUnfolderBase]: 64/191 cut-off events. [2023-11-17 11:30:58,640 INFO L125 PetriNetUnfolderBase]: For 1131/1131 co-relation queries the response was YES. [2023-11-17 11:30:58,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1157 conditions, 191 events. 64/191 cut-off events. For 1131/1131 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 803 event pairs, 18 based on Foata normal form. 1/191 useless extension candidates. Maximal degree in co-relation 1108. Up to 157 conditions per place. [2023-11-17 11:30:58,642 INFO L140 encePairwiseOnDemand]: 99/109 looper letters, 68 selfloop transitions, 20 changer transitions 7/95 dead transitions. [2023-11-17 11:30:58,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 95 transitions, 1192 flow [2023-11-17 11:30:58,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 11:30:58,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 11:30:58,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 307 transitions. [2023-11-17 11:30:58,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.23470948012232415 [2023-11-17 11:30:58,645 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 307 transitions. [2023-11-17 11:30:58,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 307 transitions. [2023-11-17 11:30:58,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:58,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 307 transitions. [2023-11-17 11:30:58,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 25.583333333333332) internal successors, (307), 12 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:58,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 109.0) internal successors, (1417), 13 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:58,649 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 109.0) internal successors, (1417), 13 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:58,649 INFO L175 Difference]: Start difference. First operand has 119 places, 84 transitions, 919 flow. Second operand 12 states and 307 transitions. [2023-11-17 11:30:58,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 95 transitions, 1192 flow [2023-11-17 11:30:58,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 95 transitions, 1146 flow, removed 10 selfloop flow, removed 10 redundant places. [2023-11-17 11:30:58,656 INFO L231 Difference]: Finished difference. Result has 116 places, 83 transitions, 922 flow [2023-11-17 11:30:58,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=922, PETRI_PLACES=116, PETRI_TRANSITIONS=83} [2023-11-17 11:30:58,656 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 87 predicate places. [2023-11-17 11:30:58,657 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 83 transitions, 922 flow [2023-11-17 11:30:58,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:58,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:58,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:58,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-17 11:30:58,657 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 11:30:58,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:58,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1483662333, now seen corresponding path program 13 times [2023-11-17 11:30:58,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:58,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920841842] [2023-11-17 11:30:58,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:58,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:58,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:59,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:59,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:59,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920841842] [2023-11-17 11:30:59,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920841842] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:59,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:59,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 11:30:59,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172700013] [2023-11-17 11:30:59,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:59,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 11:30:59,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:59,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 11:30:59,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-17 11:30:59,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:30:59,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 83 transitions, 922 flow. Second operand has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:59,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:59,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:30:59,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:59,889 INFO L124 PetriNetUnfolderBase]: 63/184 cut-off events. [2023-11-17 11:30:59,889 INFO L125 PetriNetUnfolderBase]: For 1095/1095 co-relation queries the response was YES. [2023-11-17 11:30:59,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1134 conditions, 184 events. 63/184 cut-off events. For 1095/1095 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 758 event pairs, 7 based on Foata normal form. 1/184 useless extension candidates. Maximal degree in co-relation 1090. Up to 113 conditions per place. [2023-11-17 11:30:59,890 INFO L140 encePairwiseOnDemand]: 99/109 looper letters, 56 selfloop transitions, 37 changer transitions 9/102 dead transitions. [2023-11-17 11:30:59,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 102 transitions, 1273 flow [2023-11-17 11:30:59,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 11:30:59,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 11:30:59,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 294 transitions. [2023-11-17 11:30:59,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24520433694745622 [2023-11-17 11:30:59,909 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 294 transitions. [2023-11-17 11:30:59,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 294 transitions. [2023-11-17 11:30:59,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:59,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 294 transitions. [2023-11-17 11:30:59,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 26.727272727272727) internal successors, (294), 11 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:59,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 109.0) internal successors, (1308), 12 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:59,911 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 109.0) internal successors, (1308), 12 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:59,911 INFO L175 Difference]: Start difference. First operand has 116 places, 83 transitions, 922 flow. Second operand 11 states and 294 transitions. [2023-11-17 11:30:59,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 102 transitions, 1273 flow [2023-11-17 11:30:59,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 102 transitions, 1191 flow, removed 13 selfloop flow, removed 12 redundant places. [2023-11-17 11:30:59,919 INFO L231 Difference]: Finished difference. Result has 112 places, 85 transitions, 969 flow [2023-11-17 11:30:59,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=969, PETRI_PLACES=112, PETRI_TRANSITIONS=85} [2023-11-17 11:30:59,919 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 83 predicate places. [2023-11-17 11:30:59,919 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 85 transitions, 969 flow [2023-11-17 11:30:59,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:59,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:59,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:59,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-17 11:30:59,920 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 11:30:59,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:59,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1642800830, now seen corresponding path program 4 times [2023-11-17 11:30:59,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:59,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621731775] [2023-11-17 11:30:59,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:59,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:59,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:31:00,330 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 11:31:00,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:31:00,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621731775] [2023-11-17 11:31:00,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621731775] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:31:00,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:31:00,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 11:31:00,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4877246] [2023-11-17 11:31:00,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:31:00,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:31:00,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:31:00,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:31:00,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:31:00,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:31:00,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 85 transitions, 969 flow. Second operand has 8 states, 8 states have (on average 24.0) internal successors, (192), 8 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:00,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:31:00,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:31:00,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:31:00,587 INFO L124 PetriNetUnfolderBase]: 59/184 cut-off events. [2023-11-17 11:31:00,587 INFO L125 PetriNetUnfolderBase]: For 992/992 co-relation queries the response was YES. [2023-11-17 11:31:00,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1110 conditions, 184 events. 59/184 cut-off events. For 992/992 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 784 event pairs, 4 based on Foata normal form. 1/183 useless extension candidates. Maximal degree in co-relation 1068. Up to 54 conditions per place. [2023-11-17 11:31:00,589 INFO L140 encePairwiseOnDemand]: 99/109 looper letters, 38 selfloop transitions, 57 changer transitions 12/107 dead transitions. [2023-11-17 11:31:00,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 107 transitions, 1347 flow [2023-11-17 11:31:00,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 11:31:00,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 11:31:00,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 271 transitions. [2023-11-17 11:31:00,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2486238532110092 [2023-11-17 11:31:00,606 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 271 transitions. [2023-11-17 11:31:00,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 271 transitions. [2023-11-17 11:31:00,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:31:00,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 271 transitions. [2023-11-17 11:31:00,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 27.1) internal successors, (271), 10 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:00,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 109.0) internal successors, (1199), 11 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:00,608 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 109.0) internal successors, (1199), 11 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:00,608 INFO L175 Difference]: Start difference. First operand has 112 places, 85 transitions, 969 flow. Second operand 10 states and 271 transitions. [2023-11-17 11:31:00,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 107 transitions, 1347 flow [2023-11-17 11:31:00,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 107 transitions, 1207 flow, removed 27 selfloop flow, removed 12 redundant places. [2023-11-17 11:31:00,614 INFO L231 Difference]: Finished difference. Result has 106 places, 86 transitions, 1001 flow [2023-11-17 11:31:00,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=848, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1001, PETRI_PLACES=106, PETRI_TRANSITIONS=86} [2023-11-17 11:31:00,615 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 77 predicate places. [2023-11-17 11:31:00,615 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 86 transitions, 1001 flow [2023-11-17 11:31:00,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.0) internal successors, (192), 8 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:00,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:31:00,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:31:00,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-17 11:31:00,616 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 11:31:00,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:31:00,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1236783833, now seen corresponding path program 14 times [2023-11-17 11:31:00,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:31:00,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354821053] [2023-11-17 11:31:00,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:31:00,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:31:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:31:01,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:31:01,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:31:01,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354821053] [2023-11-17 11:31:01,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354821053] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:31:01,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:31:01,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 11:31:01,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444050143] [2023-11-17 11:31:01,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:31:01,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 11:31:01,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:31:01,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 11:31:01,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-17 11:31:01,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:31:01,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 86 transitions, 1001 flow. Second operand has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:01,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:31:01,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:31:01,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:31:01,739 INFO L124 PetriNetUnfolderBase]: 54/174 cut-off events. [2023-11-17 11:31:01,739 INFO L125 PetriNetUnfolderBase]: For 943/943 co-relation queries the response was YES. [2023-11-17 11:31:01,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1031 conditions, 174 events. 54/174 cut-off events. For 943/943 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 729 event pairs, 9 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 995. Up to 126 conditions per place. [2023-11-17 11:31:01,740 INFO L140 encePairwiseOnDemand]: 97/109 looper letters, 68 selfloop transitions, 31 changer transitions 2/101 dead transitions. [2023-11-17 11:31:01,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 101 transitions, 1296 flow [2023-11-17 11:31:01,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 11:31:01,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 11:31:01,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 314 transitions. [2023-11-17 11:31:01,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2400611620795107 [2023-11-17 11:31:01,742 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 314 transitions. [2023-11-17 11:31:01,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 314 transitions. [2023-11-17 11:31:01,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:31:01,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 314 transitions. [2023-11-17 11:31:01,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 26.166666666666668) internal successors, (314), 12 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:01,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 109.0) internal successors, (1417), 13 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:01,744 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 109.0) internal successors, (1417), 13 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:01,744 INFO L175 Difference]: Start difference. First operand has 106 places, 86 transitions, 1001 flow. Second operand 12 states and 314 transitions. [2023-11-17 11:31:01,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 101 transitions, 1296 flow [2023-11-17 11:31:01,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 101 transitions, 1212 flow, removed 18 selfloop flow, removed 6 redundant places. [2023-11-17 11:31:01,751 INFO L231 Difference]: Finished difference. Result has 111 places, 88 transitions, 1010 flow [2023-11-17 11:31:01,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=925, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1010, PETRI_PLACES=111, PETRI_TRANSITIONS=88} [2023-11-17 11:31:01,751 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 82 predicate places. [2023-11-17 11:31:01,751 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 88 transitions, 1010 flow [2023-11-17 11:31:01,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:01,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:31:01,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:31:01,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-17 11:31:01,752 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 11:31:01,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:31:01,752 INFO L85 PathProgramCache]: Analyzing trace with hash -318833662, now seen corresponding path program 5 times [2023-11-17 11:31:01,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:31:01,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078821999] [2023-11-17 11:31:01,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:31:01,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:31:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:31:02,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:31:02,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:31:02,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078821999] [2023-11-17 11:31:02,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078821999] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:31:02,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:31:02,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 11:31:02,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054100913] [2023-11-17 11:31:02,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:31:02,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:31:02,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:31:02,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:31:02,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:31:02,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:31:02,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 88 transitions, 1010 flow. Second operand has 8 states, 8 states have (on average 24.0) internal successors, (192), 8 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:02,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:31:02,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:31:02,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:31:02,308 INFO L124 PetriNetUnfolderBase]: 50/169 cut-off events. [2023-11-17 11:31:02,308 INFO L125 PetriNetUnfolderBase]: For 837/837 co-relation queries the response was YES. [2023-11-17 11:31:02,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 971 conditions, 169 events. 50/169 cut-off events. For 837/837 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 706 event pairs, 6 based on Foata normal form. 2/170 useless extension candidates. Maximal degree in co-relation 936. Up to 49 conditions per place. [2023-11-17 11:31:02,310 INFO L140 encePairwiseOnDemand]: 101/109 looper letters, 42 selfloop transitions, 39 changer transitions 17/98 dead transitions. [2023-11-17 11:31:02,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 98 transitions, 1252 flow [2023-11-17 11:31:02,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 11:31:02,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 11:31:02,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 244 transitions. [2023-11-17 11:31:02,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24872579001019368 [2023-11-17 11:31:02,311 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 244 transitions. [2023-11-17 11:31:02,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 244 transitions. [2023-11-17 11:31:02,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:31:02,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 244 transitions. [2023-11-17 11:31:02,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 27.11111111111111) internal successors, (244), 9 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:02,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 109.0) internal successors, (1090), 10 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:02,312 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 109.0) internal successors, (1090), 10 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:02,313 INFO L175 Difference]: Start difference. First operand has 111 places, 88 transitions, 1010 flow. Second operand 9 states and 244 transitions. [2023-11-17 11:31:02,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 98 transitions, 1252 flow [2023-11-17 11:31:02,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 98 transitions, 1188 flow, removed 2 selfloop flow, removed 11 redundant places. [2023-11-17 11:31:02,318 INFO L231 Difference]: Finished difference. Result has 108 places, 74 transitions, 855 flow [2023-11-17 11:31:02,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=921, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=855, PETRI_PLACES=108, PETRI_TRANSITIONS=74} [2023-11-17 11:31:02,318 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 79 predicate places. [2023-11-17 11:31:02,318 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 74 transitions, 855 flow [2023-11-17 11:31:02,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.0) internal successors, (192), 8 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:02,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:31:02,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:31:02,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-17 11:31:02,319 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 11:31:02,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:31:02,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1774367885, now seen corresponding path program 15 times [2023-11-17 11:31:02,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:31:02,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28303990] [2023-11-17 11:31:02,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:31:02,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:31:02,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:31:03,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:31:03,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:31:03,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28303990] [2023-11-17 11:31:03,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28303990] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:31:03,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:31:03,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 11:31:03,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508390251] [2023-11-17 11:31:03,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:31:03,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 11:31:03,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:31:03,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 11:31:03,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-17 11:31:03,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:31:03,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 74 transitions, 855 flow. Second operand has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:03,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:31:03,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:31:03,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:31:03,364 INFO L124 PetriNetUnfolderBase]: 41/139 cut-off events. [2023-11-17 11:31:03,364 INFO L125 PetriNetUnfolderBase]: For 773/773 co-relation queries the response was YES. [2023-11-17 11:31:03,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 834 conditions, 139 events. 41/139 cut-off events. For 773/773 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 508 event pairs, 9 based on Foata normal form. 2/140 useless extension candidates. Maximal degree in co-relation 800. Up to 104 conditions per place. [2023-11-17 11:31:03,366 INFO L140 encePairwiseOnDemand]: 99/109 looper letters, 61 selfloop transitions, 18 changer transitions 8/87 dead transitions. [2023-11-17 11:31:03,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 87 transitions, 1134 flow [2023-11-17 11:31:03,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 11:31:03,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 11:31:03,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 286 transitions. [2023-11-17 11:31:03,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.23853211009174313 [2023-11-17 11:31:03,367 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 286 transitions. [2023-11-17 11:31:03,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 286 transitions. [2023-11-17 11:31:03,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:31:03,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 286 transitions. [2023-11-17 11:31:03,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 26.0) internal successors, (286), 11 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:03,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 109.0) internal successors, (1308), 12 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:03,369 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 109.0) internal successors, (1308), 12 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:03,369 INFO L175 Difference]: Start difference. First operand has 108 places, 74 transitions, 855 flow. Second operand 11 states and 286 transitions. [2023-11-17 11:31:03,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 87 transitions, 1134 flow [2023-11-17 11:31:03,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 87 transitions, 1016 flow, removed 23 selfloop flow, removed 11 redundant places. [2023-11-17 11:31:03,373 INFO L231 Difference]: Finished difference. Result has 101 places, 74 transitions, 807 flow [2023-11-17 11:31:03,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=807, PETRI_PLACES=101, PETRI_TRANSITIONS=74} [2023-11-17 11:31:03,374 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 72 predicate places. [2023-11-17 11:31:03,374 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 74 transitions, 807 flow [2023-11-17 11:31:03,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:03,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:31:03,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:31:03,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-17 11:31:03,374 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 11:31:03,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:31:03,374 INFO L85 PathProgramCache]: Analyzing trace with hash -999506469, now seen corresponding path program 16 times [2023-11-17 11:31:03,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:31:03,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154584900] [2023-11-17 11:31:03,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:31:03,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:31:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:31:04,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:31:04,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:31:04,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154584900] [2023-11-17 11:31:04,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154584900] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:31:04,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:31:04,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 11:31:04,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160432477] [2023-11-17 11:31:04,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:31:04,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 11:31:04,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:31:04,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 11:31:04,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-17 11:31:04,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:31:04,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 74 transitions, 807 flow. Second operand has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:04,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:31:04,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:31:04,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:31:04,475 INFO L124 PetriNetUnfolderBase]: 38/133 cut-off events. [2023-11-17 11:31:04,475 INFO L125 PetriNetUnfolderBase]: For 584/584 co-relation queries the response was YES. [2023-11-17 11:31:04,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 764 conditions, 133 events. 38/133 cut-off events. For 584/584 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 473 event pairs, 10 based on Foata normal form. 2/134 useless extension candidates. Maximal degree in co-relation 734. Up to 93 conditions per place. [2023-11-17 11:31:04,476 INFO L140 encePairwiseOnDemand]: 99/109 looper letters, 57 selfloop transitions, 21 changer transitions 8/86 dead transitions. [2023-11-17 11:31:04,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 86 transitions, 1072 flow [2023-11-17 11:31:04,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 11:31:04,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 11:31:04,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 311 transitions. [2023-11-17 11:31:04,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.23776758409785934 [2023-11-17 11:31:04,477 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 311 transitions. [2023-11-17 11:31:04,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 311 transitions. [2023-11-17 11:31:04,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:31:04,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 311 transitions. [2023-11-17 11:31:04,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 25.916666666666668) internal successors, (311), 12 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:04,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 109.0) internal successors, (1417), 13 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:04,479 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 109.0) internal successors, (1417), 13 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:04,479 INFO L175 Difference]: Start difference. First operand has 101 places, 74 transitions, 807 flow. Second operand 12 states and 311 transitions. [2023-11-17 11:31:04,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 86 transitions, 1072 flow [2023-11-17 11:31:04,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 86 transitions, 1028 flow, removed 6 selfloop flow, removed 8 redundant places. [2023-11-17 11:31:04,483 INFO L231 Difference]: Finished difference. Result has 103 places, 74 transitions, 827 flow [2023-11-17 11:31:04,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=827, PETRI_PLACES=103, PETRI_TRANSITIONS=74} [2023-11-17 11:31:04,484 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 74 predicate places. [2023-11-17 11:31:04,484 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 74 transitions, 827 flow [2023-11-17 11:31:04,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:04,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:31:04,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:31:04,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-17 11:31:04,484 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 11:31:04,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:31:04,485 INFO L85 PathProgramCache]: Analyzing trace with hash 780772107, now seen corresponding path program 17 times [2023-11-17 11:31:04,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:31:04,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319637033] [2023-11-17 11:31:04,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:31:04,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:31:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:31:05,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:31:05,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:31:05,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319637033] [2023-11-17 11:31:05,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319637033] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:31:05,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:31:05,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 11:31:05,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780413413] [2023-11-17 11:31:05,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:31:05,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 11:31:05,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:31:05,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 11:31:05,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-17 11:31:05,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:31:05,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 74 transitions, 827 flow. Second operand has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:05,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:31:05,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:31:05,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:31:05,692 INFO L124 PetriNetUnfolderBase]: 33/115 cut-off events. [2023-11-17 11:31:05,692 INFO L125 PetriNetUnfolderBase]: For 543/543 co-relation queries the response was YES. [2023-11-17 11:31:05,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 704 conditions, 115 events. 33/115 cut-off events. For 543/543 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 376 event pairs, 6 based on Foata normal form. 2/116 useless extension candidates. Maximal degree in co-relation 673. Up to 68 conditions per place. [2023-11-17 11:31:05,693 INFO L140 encePairwiseOnDemand]: 99/109 looper letters, 46 selfloop transitions, 27 changer transitions 8/81 dead transitions. [2023-11-17 11:31:05,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 81 transitions, 1012 flow [2023-11-17 11:31:05,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 11:31:05,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 11:31:05,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 312 transitions. [2023-11-17 11:31:05,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.23853211009174313 [2023-11-17 11:31:05,694 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 312 transitions. [2023-11-17 11:31:05,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 312 transitions. [2023-11-17 11:31:05,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:31:05,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 312 transitions. [2023-11-17 11:31:05,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 26.0) internal successors, (312), 12 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:05,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 109.0) internal successors, (1417), 13 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:05,696 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 109.0) internal successors, (1417), 13 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:05,696 INFO L175 Difference]: Start difference. First operand has 103 places, 74 transitions, 827 flow. Second operand 12 states and 312 transitions. [2023-11-17 11:31:05,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 81 transitions, 1012 flow [2023-11-17 11:31:05,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 81 transitions, 962 flow, removed 6 selfloop flow, removed 8 redundant places. [2023-11-17 11:31:05,700 INFO L231 Difference]: Finished difference. Result has 103 places, 69 transitions, 791 flow [2023-11-17 11:31:05,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=791, PETRI_PLACES=103, PETRI_TRANSITIONS=69} [2023-11-17 11:31:05,700 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 74 predicate places. [2023-11-17 11:31:05,701 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 69 transitions, 791 flow [2023-11-17 11:31:05,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:05,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:31:05,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:31:05,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-17 11:31:05,701 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 11:31:05,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:31:05,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1976152985, now seen corresponding path program 18 times [2023-11-17 11:31:05,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:31:05,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099791653] [2023-11-17 11:31:05,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:31:05,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:31:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:31:06,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:31:06,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:31:06,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099791653] [2023-11-17 11:31:06,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099791653] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:31:06,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:31:06,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 11:31:06,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606641153] [2023-11-17 11:31:06,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:31:06,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 11:31:06,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:31:06,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 11:31:06,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-17 11:31:06,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:31:06,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 69 transitions, 791 flow. Second operand has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:06,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:31:06,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:31:06,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:31:06,849 INFO L124 PetriNetUnfolderBase]: 33/113 cut-off events. [2023-11-17 11:31:06,849 INFO L125 PetriNetUnfolderBase]: For 554/554 co-relation queries the response was YES. [2023-11-17 11:31:06,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 711 conditions, 113 events. 33/113 cut-off events. For 554/554 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 366 event pairs, 5 based on Foata normal form. 1/113 useless extension candidates. Maximal degree in co-relation 680. Up to 78 conditions per place. [2023-11-17 11:31:06,850 INFO L140 encePairwiseOnDemand]: 99/109 looper letters, 50 selfloop transitions, 10 changer transitions 23/83 dead transitions. [2023-11-17 11:31:06,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 83 transitions, 1060 flow [2023-11-17 11:31:06,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 11:31:06,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 11:31:06,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 285 transitions. [2023-11-17 11:31:06,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.237698081734779 [2023-11-17 11:31:06,851 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 285 transitions. [2023-11-17 11:31:06,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 285 transitions. [2023-11-17 11:31:06,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:31:06,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 285 transitions. [2023-11-17 11:31:06,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 25.90909090909091) internal successors, (285), 11 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:06,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 109.0) internal successors, (1308), 12 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:06,853 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 109.0) internal successors, (1308), 12 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:06,853 INFO L175 Difference]: Start difference. First operand has 103 places, 69 transitions, 791 flow. Second operand 11 states and 285 transitions. [2023-11-17 11:31:06,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 83 transitions, 1060 flow [2023-11-17 11:31:06,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 83 transitions, 937 flow, removed 12 selfloop flow, removed 13 redundant places. [2023-11-17 11:31:06,857 INFO L231 Difference]: Finished difference. Result has 98 places, 60 transitions, 594 flow [2023-11-17 11:31:06,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=594, PETRI_PLACES=98, PETRI_TRANSITIONS=60} [2023-11-17 11:31:06,858 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 69 predicate places. [2023-11-17 11:31:06,858 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 60 transitions, 594 flow [2023-11-17 11:31:06,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:06,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:31:06,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:31:06,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-17 11:31:06,858 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 11:31:06,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:31:06,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1811511823, now seen corresponding path program 19 times [2023-11-17 11:31:06,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:31:06,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824602929] [2023-11-17 11:31:06,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:31:06,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:31:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:31:07,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:31:07,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:31:07,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824602929] [2023-11-17 11:31:07,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824602929] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:31:07,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:31:07,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 11:31:07,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232742190] [2023-11-17 11:31:07,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:31:07,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 11:31:07,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:31:07,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 11:31:07,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-17 11:31:07,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:31:07,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 60 transitions, 594 flow. Second operand has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:07,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:31:07,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:31:07,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:31:07,998 INFO L124 PetriNetUnfolderBase]: 25/91 cut-off events. [2023-11-17 11:31:07,998 INFO L125 PetriNetUnfolderBase]: For 370/370 co-relation queries the response was YES. [2023-11-17 11:31:07,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 523 conditions, 91 events. 25/91 cut-off events. For 370/370 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 258 event pairs, 7 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 494. Up to 60 conditions per place. [2023-11-17 11:31:07,999 INFO L140 encePairwiseOnDemand]: 98/109 looper letters, 49 selfloop transitions, 20 changer transitions 1/70 dead transitions. [2023-11-17 11:31:07,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 70 transitions, 794 flow [2023-11-17 11:31:08,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 11:31:08,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 11:31:08,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 307 transitions. [2023-11-17 11:31:08,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.23470948012232415 [2023-11-17 11:31:08,001 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 307 transitions. [2023-11-17 11:31:08,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 307 transitions. [2023-11-17 11:31:08,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:31:08,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 307 transitions. [2023-11-17 11:31:08,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 25.583333333333332) internal successors, (307), 12 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:08,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 109.0) internal successors, (1417), 13 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:08,003 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 109.0) internal successors, (1417), 13 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:08,003 INFO L175 Difference]: Start difference. First operand has 98 places, 60 transitions, 594 flow. Second operand 12 states and 307 transitions. [2023-11-17 11:31:08,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 70 transitions, 794 flow [2023-11-17 11:31:08,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 70 transitions, 762 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-11-17 11:31:08,006 INFO L231 Difference]: Finished difference. Result has 93 places, 61 transitions, 613 flow [2023-11-17 11:31:08,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=613, PETRI_PLACES=93, PETRI_TRANSITIONS=61} [2023-11-17 11:31:08,006 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 64 predicate places. [2023-11-17 11:31:08,007 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 61 transitions, 613 flow [2023-11-17 11:31:08,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:08,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:31:08,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:31:08,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-17 11:31:08,007 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 11:31:08,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:31:08,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1214175146, now seen corresponding path program 6 times [2023-11-17 11:31:08,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:31:08,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343014611] [2023-11-17 11:31:08,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:31:08,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:31:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:31:08,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:31:08,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:31:08,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343014611] [2023-11-17 11:31:08,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343014611] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:31:08,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:31:08,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 11:31:08,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450308839] [2023-11-17 11:31:08,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:31:08,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:31:08,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:31:08,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:31:08,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:31:08,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:31:08,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 61 transitions, 613 flow. Second operand has 8 states, 8 states have (on average 24.0) internal successors, (192), 8 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:08,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:31:08,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:31:08,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:31:08,589 INFO L124 PetriNetUnfolderBase]: 23/87 cut-off events. [2023-11-17 11:31:08,589 INFO L125 PetriNetUnfolderBase]: For 327/327 co-relation queries the response was YES. [2023-11-17 11:31:08,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 504 conditions, 87 events. 23/87 cut-off events. For 327/327 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 246 event pairs, 1 based on Foata normal form. 1/87 useless extension candidates. Maximal degree in co-relation 477. Up to 27 conditions per place. [2023-11-17 11:31:08,590 INFO L140 encePairwiseOnDemand]: 101/109 looper letters, 36 selfloop transitions, 28 changer transitions 7/71 dead transitions. [2023-11-17 11:31:08,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 71 transitions, 805 flow [2023-11-17 11:31:08,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 11:31:08,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 11:31:08,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2023-11-17 11:31:08,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24260958205912334 [2023-11-17 11:31:08,593 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 238 transitions. [2023-11-17 11:31:08,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 238 transitions. [2023-11-17 11:31:08,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:31:08,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 238 transitions. [2023-11-17 11:31:08,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 26.444444444444443) internal successors, (238), 9 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:08,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 109.0) internal successors, (1090), 10 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:08,595 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 109.0) internal successors, (1090), 10 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:08,595 INFO L175 Difference]: Start difference. First operand has 93 places, 61 transitions, 613 flow. Second operand 9 states and 238 transitions. [2023-11-17 11:31:08,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 71 transitions, 805 flow [2023-11-17 11:31:08,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 71 transitions, 739 flow, removed 3 selfloop flow, removed 13 redundant places. [2023-11-17 11:31:08,598 INFO L231 Difference]: Finished difference. Result has 88 places, 60 transitions, 602 flow [2023-11-17 11:31:08,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=602, PETRI_PLACES=88, PETRI_TRANSITIONS=60} [2023-11-17 11:31:08,599 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 59 predicate places. [2023-11-17 11:31:08,600 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 60 transitions, 602 flow [2023-11-17 11:31:08,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.0) internal successors, (192), 8 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:08,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:31:08,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:31:08,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-17 11:31:08,600 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 11:31:08,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:31:08,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1805565363, now seen corresponding path program 20 times [2023-11-17 11:31:08,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:31:08,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127027508] [2023-11-17 11:31:08,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:31:08,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:31:08,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:31:09,330 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 11:31:09,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:31:09,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127027508] [2023-11-17 11:31:09,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127027508] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:31:09,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:31:09,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 11:31:09,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83421235] [2023-11-17 11:31:09,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:31:09,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 11:31:09,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:31:09,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 11:31:09,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-17 11:31:09,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:31:09,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 60 transitions, 602 flow. Second operand has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:09,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:31:09,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:31:09,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:31:09,612 INFO L124 PetriNetUnfolderBase]: 23/80 cut-off events. [2023-11-17 11:31:09,612 INFO L125 PetriNetUnfolderBase]: For 362/362 co-relation queries the response was YES. [2023-11-17 11:31:09,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 80 events. 23/80 cut-off events. For 362/362 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 209 event pairs, 5 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 447. Up to 45 conditions per place. [2023-11-17 11:31:09,613 INFO L140 encePairwiseOnDemand]: 98/109 looper letters, 48 selfloop transitions, 19 changer transitions 0/67 dead transitions. [2023-11-17 11:31:09,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 67 transitions, 762 flow [2023-11-17 11:31:09,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 11:31:09,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 11:31:09,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 306 transitions. [2023-11-17 11:31:09,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.23394495412844038 [2023-11-17 11:31:09,614 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 306 transitions. [2023-11-17 11:31:09,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 306 transitions. [2023-11-17 11:31:09,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:31:09,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 306 transitions. [2023-11-17 11:31:09,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 25.5) internal successors, (306), 12 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:09,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 109.0) internal successors, (1417), 13 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:09,616 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 109.0) internal successors, (1417), 13 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:09,616 INFO L175 Difference]: Start difference. First operand has 88 places, 60 transitions, 602 flow. Second operand 12 states and 306 transitions. [2023-11-17 11:31:09,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 67 transitions, 762 flow [2023-11-17 11:31:09,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 67 transitions, 732 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-11-17 11:31:09,618 INFO L231 Difference]: Finished difference. Result has 90 places, 59 transitions, 603 flow [2023-11-17 11:31:09,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=603, PETRI_PLACES=90, PETRI_TRANSITIONS=59} [2023-11-17 11:31:09,619 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 61 predicate places. [2023-11-17 11:31:09,619 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 59 transitions, 603 flow [2023-11-17 11:31:09,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:09,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:31:09,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:31:09,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-17 11:31:09,619 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 11:31:09,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:31:09,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1805565344, now seen corresponding path program 7 times [2023-11-17 11:31:09,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:31:09,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876469870] [2023-11-17 11:31:09,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:31:09,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:31:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:31:09,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:31:09,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:31:09,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876469870] [2023-11-17 11:31:09,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876469870] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:31:09,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:31:09,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 11:31:09,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988503706] [2023-11-17 11:31:09,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:31:09,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:31:09,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:31:09,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:31:09,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:31:09,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:31:09,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 59 transitions, 603 flow. Second operand has 8 states, 8 states have (on average 24.0) internal successors, (192), 8 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:09,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:31:09,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:31:09,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:31:10,161 INFO L124 PetriNetUnfolderBase]: 23/79 cut-off events. [2023-11-17 11:31:10,161 INFO L125 PetriNetUnfolderBase]: For 366/366 co-relation queries the response was YES. [2023-11-17 11:31:10,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 79 events. 23/79 cut-off events. For 366/366 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 205 event pairs, 3 based on Foata normal form. 1/80 useless extension candidates. Maximal degree in co-relation 440. Up to 24 conditions per place. [2023-11-17 11:31:10,162 INFO L140 encePairwiseOnDemand]: 99/109 looper letters, 22 selfloop transitions, 22 changer transitions 22/66 dead transitions. [2023-11-17 11:31:10,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 66 transitions, 760 flow [2023-11-17 11:31:10,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 11:31:10,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 11:31:10,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 265 transitions. [2023-11-17 11:31:10,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24311926605504589 [2023-11-17 11:31:10,163 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 265 transitions. [2023-11-17 11:31:10,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 265 transitions. [2023-11-17 11:31:10,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:31:10,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 265 transitions. [2023-11-17 11:31:10,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 26.5) internal successors, (265), 10 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:10,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 109.0) internal successors, (1199), 11 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:10,165 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 109.0) internal successors, (1199), 11 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:10,165 INFO L175 Difference]: Start difference. First operand has 90 places, 59 transitions, 603 flow. Second operand 10 states and 265 transitions. [2023-11-17 11:31:10,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 66 transitions, 760 flow [2023-11-17 11:31:10,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 66 transitions, 694 flow, removed 5 selfloop flow, removed 13 redundant places. [2023-11-17 11:31:10,167 INFO L231 Difference]: Finished difference. Result has 85 places, 43 transitions, 414 flow [2023-11-17 11:31:10,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=414, PETRI_PLACES=85, PETRI_TRANSITIONS=43} [2023-11-17 11:31:10,168 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 56 predicate places. [2023-11-17 11:31:10,168 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 43 transitions, 414 flow [2023-11-17 11:31:10,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.0) internal successors, (192), 8 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:10,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:31:10,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:31:10,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-17 11:31:10,169 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 11:31:10,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:31:10,169 INFO L85 PathProgramCache]: Analyzing trace with hash 65514701, now seen corresponding path program 21 times [2023-11-17 11:31:10,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:31:10,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749823338] [2023-11-17 11:31:10,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:31:10,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:31:10,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:31:10,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:31:10,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:31:10,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749823338] [2023-11-17 11:31:10,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749823338] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:31:10,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:31:10,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 11:31:10,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971844627] [2023-11-17 11:31:10,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:31:10,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 11:31:10,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:31:10,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 11:31:10,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-17 11:31:10,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:31:10,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 43 transitions, 414 flow. Second operand has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:10,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:31:10,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:31:10,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:31:11,202 INFO L124 PetriNetUnfolderBase]: 19/69 cut-off events. [2023-11-17 11:31:11,202 INFO L125 PetriNetUnfolderBase]: For 227/227 co-relation queries the response was YES. [2023-11-17 11:31:11,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 374 conditions, 69 events. 19/69 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 155 event pairs, 2 based on Foata normal form. 1/70 useless extension candidates. Maximal degree in co-relation 355. Up to 34 conditions per place. [2023-11-17 11:31:11,203 INFO L140 encePairwiseOnDemand]: 99/109 looper letters, 23 selfloop transitions, 3 changer transitions 26/52 dead transitions. [2023-11-17 11:31:11,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 52 transitions, 574 flow [2023-11-17 11:31:11,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 11:31:11,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 11:31:11,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 301 transitions. [2023-11-17 11:31:11,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2301223241590214 [2023-11-17 11:31:11,209 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 301 transitions. [2023-11-17 11:31:11,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 301 transitions. [2023-11-17 11:31:11,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:31:11,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 301 transitions. [2023-11-17 11:31:11,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 25.083333333333332) internal successors, (301), 12 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:11,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 109.0) internal successors, (1417), 13 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:11,212 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 109.0) internal successors, (1417), 13 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:11,212 INFO L175 Difference]: Start difference. First operand has 85 places, 43 transitions, 414 flow. Second operand 12 states and 301 transitions. [2023-11-17 11:31:11,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 52 transitions, 574 flow [2023-11-17 11:31:11,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 52 transitions, 428 flow, removed 5 selfloop flow, removed 21 redundant places. [2023-11-17 11:31:11,214 INFO L231 Difference]: Finished difference. Result has 70 places, 26 transitions, 158 flow [2023-11-17 11:31:11,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=158, PETRI_PLACES=70, PETRI_TRANSITIONS=26} [2023-11-17 11:31:11,215 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2023-11-17 11:31:11,215 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 26 transitions, 158 flow [2023-11-17 11:31:11,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:11,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:31:11,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:31:11,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-17 11:31:11,216 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 11:31:11,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:31:11,216 INFO L85 PathProgramCache]: Analyzing trace with hash 374755129, now seen corresponding path program 22 times [2023-11-17 11:31:11,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:31:11,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101298470] [2023-11-17 11:31:11,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:31:11,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:31:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:31:11,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:31:11,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:31:11,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101298470] [2023-11-17 11:31:11,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101298470] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:31:11,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:31:11,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-17 11:31:11,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051868766] [2023-11-17 11:31:11,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:31:11,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 11:31:11,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:31:11,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 11:31:11,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-17 11:31:11,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:31:11,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 26 transitions, 158 flow. Second operand has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:11,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:31:11,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:31:11,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:31:12,161 INFO L124 PetriNetUnfolderBase]: 9/33 cut-off events. [2023-11-17 11:31:12,161 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2023-11-17 11:31:12,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 33 events. 9/33 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs, 1 based on Foata normal form. 1/34 useless extension candidates. Maximal degree in co-relation 122. Up to 10 conditions per place. [2023-11-17 11:31:12,161 INFO L140 encePairwiseOnDemand]: 99/109 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2023-11-17 11:31:12,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 26 transitions, 208 flow [2023-11-17 11:31:12,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 11:31:12,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 11:31:12,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 287 transitions. [2023-11-17 11:31:12,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.21941896024464833 [2023-11-17 11:31:12,162 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 287 transitions. [2023-11-17 11:31:12,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 287 transitions. [2023-11-17 11:31:12,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:31:12,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 287 transitions. [2023-11-17 11:31:12,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 23.916666666666668) internal successors, (287), 12 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:12,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 109.0) internal successors, (1417), 13 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:12,165 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 109.0) internal successors, (1417), 13 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:12,165 INFO L175 Difference]: Start difference. First operand has 70 places, 26 transitions, 158 flow. Second operand 12 states and 287 transitions. [2023-11-17 11:31:12,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 26 transitions, 208 flow [2023-11-17 11:31:12,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 26 transitions, 156 flow, removed 5 selfloop flow, removed 16 redundant places. [2023-11-17 11:31:12,166 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2023-11-17 11:31:12,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2023-11-17 11:31:12,166 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 18 predicate places. [2023-11-17 11:31:12,166 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2023-11-17 11:31:12,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:12,169 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2023-11-17 11:31:12,169 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2023-11-17 11:31:12,169 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2023-11-17 11:31:12,169 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2023-11-17 11:31:12,170 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2023-11-17 11:31:12,170 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2023-11-17 11:31:12,170 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-11-17 11:31:12,170 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-11-17 11:31:12,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-17 11:31:12,170 INFO L445 BasicCegarLoop]: Path program histogram: [22, 7, 1, 1, 1, 1] [2023-11-17 11:31:12,172 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:31:12,173 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:31:12,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:31:12 BasicIcfg [2023-11-17 11:31:12,175 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:31:12,175 INFO L158 Benchmark]: Toolchain (without parser) took 49005.42ms. Allocated memory was 194.0MB in the beginning and 939.5MB in the end (delta: 745.5MB). Free memory was 137.3MB in the beginning and 887.5MB in the end (delta: -750.2MB). Peak memory consumption was 550.6MB. Max. memory is 8.0GB. [2023-11-17 11:31:12,175 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 154.1MB. Free memory is still 102.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:31:12,175 INFO L158 Benchmark]: CACSL2BoogieTranslator took 771.64ms. Allocated memory was 194.0MB in the beginning and 272.6MB in the end (delta: 78.6MB). Free memory was 137.3MB in the beginning and 216.3MB in the end (delta: -79.1MB). Peak memory consumption was 52.0MB. Max. memory is 8.0GB. [2023-11-17 11:31:12,176 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.14ms. Allocated memory is still 272.6MB. Free memory was 216.3MB in the beginning and 213.2MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 11:31:12,176 INFO L158 Benchmark]: Boogie Preprocessor took 33.43ms. Allocated memory is still 272.6MB. Free memory was 213.2MB in the beginning and 210.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 11:31:12,176 INFO L158 Benchmark]: RCFGBuilder took 738.69ms. Allocated memory is still 272.6MB. Free memory was 210.0MB in the beginning and 166.5MB in the end (delta: 43.5MB). Peak memory consumption was 44.0MB. Max. memory is 8.0GB. [2023-11-17 11:31:12,176 INFO L158 Benchmark]: TraceAbstraction took 47406.78ms. Allocated memory was 272.6MB in the beginning and 939.5MB in the end (delta: 666.9MB). Free memory was 165.5MB in the beginning and 887.5MB in the end (delta: -722.0MB). Peak memory consumption was 499.6MB. Max. memory is 8.0GB. [2023-11-17 11:31:12,177 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 154.1MB. Free memory is still 102.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 771.64ms. Allocated memory was 194.0MB in the beginning and 272.6MB in the end (delta: 78.6MB). Free memory was 137.3MB in the beginning and 216.3MB in the end (delta: -79.1MB). Peak memory consumption was 52.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 50.14ms. Allocated memory is still 272.6MB. Free memory was 216.3MB in the beginning and 213.2MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.43ms. Allocated memory is still 272.6MB. Free memory was 213.2MB in the beginning and 210.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 738.69ms. Allocated memory is still 272.6MB. Free memory was 210.0MB in the beginning and 166.5MB in the end (delta: 43.5MB). Peak memory consumption was 44.0MB. Max. memory is 8.0GB. * TraceAbstraction took 47406.78ms. Allocated memory was 272.6MB in the beginning and 939.5MB in the end (delta: 666.9MB). Free memory was 165.5MB in the beginning and 887.5MB in the end (delta: -722.0MB). Peak memory consumption was 499.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 15.3s, 53 PlacesBefore, 29 PlacesAfterwards, 53 TransitionsBefore, 24 TransitionsAfterwards, 330 CoEnabledTransitionPairs, 4 FixpointIterations, 24 TrivialSequentialCompositions, 8 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 7 ConcurrentYvCompositions, 5 ChoiceCompositions, 49 TotalNumberOfCompositions, 838 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 464, independent: 402, independent conditional: 0, independent unconditional: 402, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 15, unknown conditional: 0, unknown unconditional: 15] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 220, independent: 202, independent conditional: 0, independent unconditional: 202, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 220, independent: 199, independent conditional: 0, independent unconditional: 199, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 21, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , SemanticIndependenceRelation.Query Time [ms]: [ total: 8160, independent: 10, independent conditional: 0, independent unconditional: 10, dependent: 1853, dependent conditional: 0, dependent unconditional: 1853, unknown: 6297, unknown conditional: 0, unknown unconditional: 6297] ], Cache Queries: [ total: 464, independent: 200, independent conditional: 0, independent unconditional: 200, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 230, unknown conditional: 0, unknown unconditional: 230] , Statistics on independence cache: Total cache size (in pairs): 50, Positive cache size: 42, Positive conditional cache size: 0, Positive unconditional cache size: 42, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 3, Unknown conditional cache size: 0, Unknown unconditional cache size: 3 - 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, 60 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: 47.3s, OverallIterations: 33, TraceHistogramMax: 1, PathProgramHistogramMax: 22, EmptinessCheckTime: 0.0s, AutomataDifference: 10.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 15.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 762 SdHoareTripleChecker+Valid, 6.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 762 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 5.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 168 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7582 IncrementalHoareTripleChecker+Invalid, 7750 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 168 mSolverCounterUnsat, 0 mSDtfsCounter, 7582 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 437 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 398 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1010occurred in iteration=22, InterpolantAutomatonStates: 317, 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, 19.8s InterpolantComputationTime, 480 NumberOfCodeBlocks, 480 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 447 ConstructedInterpolants, 0 QuantifiedInterpolants, 8526 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 33 InterpolantComputations, 33 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 11:31:12,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...