/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-3_1-container_of-global.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:30:28,384 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:30:28,439 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 11:30:28,483 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:30:28,484 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:30:28,484 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:30:28,485 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:30:28,486 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:30:28,486 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:30:28,490 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:30:28,490 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:30:28,490 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:30:28,491 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:30:28,492 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:30:28,492 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:30:28,492 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:30:28,492 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:30:28,493 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:30:28,493 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:30:28,493 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:30:28,493 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:30:28,494 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:30:28,494 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:30:28,494 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:30:28,495 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:30:28,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:30:28,495 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:30:28,495 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:30:28,495 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:30:28,496 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:30:28,497 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:30:28,497 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:30:28,497 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:30:28,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:30:28,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:30:28,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:30:28,727 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:30:28,727 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:30:28,729 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i [2023-11-17 11:30:30,007 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:30:30,279 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:30:30,281 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i [2023-11-17 11:30:30,306 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee2f82390/3768c442bbd841febf8878882ab3dccc/FLAG2e28ec9a4 [2023-11-17 11:30:30,320 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee2f82390/3768c442bbd841febf8878882ab3dccc [2023-11-17 11:30:30,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:30:30,323 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:30:30,324 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:30:30,324 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:30:30,329 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:30:30,330 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:30:30" (1/1) ... [2023-11-17 11:30:30,331 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3335b4a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:30, skipping insertion in model container [2023-11-17 11:30:30,331 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:30:30" (1/1) ... [2023-11-17 11:30:30,387 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:30:31,018 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i[76084,76097] [2023-11-17 11:30:31,069 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:30:31,081 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:30:31,126 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i[76084,76097] [2023-11-17 11:30:31,144 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:30:31,308 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:30:31,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:31 WrapperNode [2023-11-17 11:30:31,313 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:30:31,315 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:30:31,315 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:30:31,315 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:30:31,348 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:31" (1/1) ... [2023-11-17 11:30:31,395 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:31" (1/1) ... [2023-11-17 11:30:31,432 INFO L138 Inliner]: procedures = 483, calls = 47, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 135 [2023-11-17 11:30:31,433 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:30:31,433 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:30:31,433 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:30:31,433 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:30:31,441 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:31" (1/1) ... [2023-11-17 11:30:31,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:31" (1/1) ... [2023-11-17 11:30:31,455 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:31" (1/1) ... [2023-11-17 11:30:31,456 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:31" (1/1) ... [2023-11-17 11:30:31,470 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:31" (1/1) ... [2023-11-17 11:30:31,472 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:31" (1/1) ... [2023-11-17 11:30:31,475 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:31" (1/1) ... [2023-11-17 11:30:31,477 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:31" (1/1) ... [2023-11-17 11:30:31,482 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:30:31,482 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:30:31,482 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:30:31,483 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:30:31,483 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:31" (1/1) ... [2023-11-17 11:30:31,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:30:31,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:30:31,518 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 11:30:31,520 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 11:30:31,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:30:31,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 11:30:31,539 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-17 11:30:31,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:30:31,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-17 11:30:31,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:30:31,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:30:31,539 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-11-17 11:30:31,539 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-11-17 11:30:31,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:30:31,539 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-17 11:30:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:30:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:30:31,541 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 11:30:31,769 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:30:31,771 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:30:31,977 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:30:32,163 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:30:32,163 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 11:30:32,164 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:30:32 BoogieIcfgContainer [2023-11-17 11:30:32,164 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:30:32,168 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:30:32,169 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:30:32,171 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:30:32,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:30:30" (1/3) ... [2023-11-17 11:30:32,172 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@650f58ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:30:32, skipping insertion in model container [2023-11-17 11:30:32,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:31" (2/3) ... [2023-11-17 11:30:32,172 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@650f58ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:30:32, skipping insertion in model container [2023-11-17 11:30:32,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:30:32" (3/3) ... [2023-11-17 11:30:32,173 INFO L112 eAbstractionObserver]: Analyzing ICFG race-3_1-container_of-global.i [2023-11-17 11:30:32,188 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:30:32,188 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-17 11:30:32,188 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:30:32,232 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 11:30:32,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 60 transitions, 134 flow [2023-11-17 11:30:32,309 INFO L124 PetriNetUnfolderBase]: 10/73 cut-off events. [2023-11-17 11:30:32,309 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 11:30:32,317 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 11:30:32,317 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 60 transitions, 134 flow [2023-11-17 11:30:32,323 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 53 transitions, 118 flow [2023-11-17 11:30:32,337 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:30:32,354 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 53 transitions, 118 flow [2023-11-17 11:30:32,357 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 53 transitions, 118 flow [2023-11-17 11:30:32,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 53 transitions, 118 flow [2023-11-17 11:30:32,377 INFO L124 PetriNetUnfolderBase]: 7/64 cut-off events. [2023-11-17 11:30:32,378 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 11:30:32,378 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 11:30:32,379 INFO L119 LiptonReduction]: Number of co-enabled transitions 330 [2023-11-17 11:30:50,970 INFO L134 LiptonReduction]: Checked pairs total: 838 [2023-11-17 11:30:50,970 INFO L136 LiptonReduction]: Total number of compositions: 49 [2023-11-17 11:30:50,984 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:30:50,989 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;@11d90c55, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:30:50,990 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-17 11:30:50,991 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:30:50,991 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-17 11:30:50,991 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:30:50,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:50,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-17 11:30:50,992 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 11:30:50,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:50,997 INFO L85 PathProgramCache]: Analyzing trace with hash 503, now seen corresponding path program 1 times [2023-11-17 11:30:51,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:51,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746473077] [2023-11-17 11:30:51,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:51,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:51,233 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 11:30:51,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:51,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746473077] [2023-11-17 11:30:51,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746473077] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:51,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:51,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-17 11:30:51,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760531941] [2023-11-17 11:30:51,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:51,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-17 11:30:51,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:51,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-17 11:30:51,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-17 11:30:51,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:30:51,274 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 11:30:51,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:51,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:30:51,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:51,412 INFO L124 PetriNetUnfolderBase]: 142/263 cut-off events. [2023-11-17 11:30:51,413 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-17 11:30:51,414 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 890 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 11:30:51,417 INFO L140 encePairwiseOnDemand]: 107/109 looper letters, 22 selfloop transitions, 0 changer transitions 0/22 dead transitions. [2023-11-17 11:30:51,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 22 transitions, 100 flow [2023-11-17 11:30:51,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 11:30:51,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-17 11:30:51,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 68 transitions. [2023-11-17 11:30:51,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3119266055045872 [2023-11-17 11:30:51,429 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 68 transitions. [2023-11-17 11:30:51,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 68 transitions. [2023-11-17 11:30:51,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:51,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 68 transitions. [2023-11-17 11:30:51,435 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 11:30:51,437 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 11:30:51,438 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 11:30:51,439 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 60 flow. Second operand 2 states and 68 transitions. [2023-11-17 11:30:51,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 22 transitions, 100 flow [2023-11-17 11:30:51,442 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 11:30:51,443 INFO L231 Difference]: Finished difference. Result has 24 places, 22 transitions, 48 flow [2023-11-17 11:30:51,445 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 11:30:51,448 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -5 predicate places. [2023-11-17 11:30:51,448 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 22 transitions, 48 flow [2023-11-17 11:30:51,449 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 11:30:51,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:51,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-17 11:30:51,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:30:51,449 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 11:30:51,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:51,451 INFO L85 PathProgramCache]: Analyzing trace with hash 507420, now seen corresponding path program 1 times [2023-11-17 11:30:51,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:51,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043175514] [2023-11-17 11:30:51,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:51,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:51,767 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 11:30:51,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:51,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043175514] [2023-11-17 11:30:51,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043175514] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:51,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:51,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:30:51,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136049208] [2023-11-17 11:30:51,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:51,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:30:51,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:51,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:30:51,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:30:51,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:30:51,771 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 11:30:51,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:51,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:30:51,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:51,926 INFO L124 PetriNetUnfolderBase]: 154/294 cut-off events. [2023-11-17 11:30:51,927 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 11:30:51,930 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 1157 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 11:30:51,933 INFO L140 encePairwiseOnDemand]: 104/109 looper letters, 25 selfloop transitions, 4 changer transitions 0/29 dead transitions. [2023-11-17 11:30:51,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 29 transitions, 120 flow [2023-11-17 11:30:51,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:30:51,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:30:51,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2023-11-17 11:30:51,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29357798165137616 [2023-11-17 11:30:51,937 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 96 transitions. [2023-11-17 11:30:51,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 96 transitions. [2023-11-17 11:30:51,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:51,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 96 transitions. [2023-11-17 11:30:51,942 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 11:30:51,944 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 11:30:51,945 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 11:30:51,945 INFO L175 Difference]: Start difference. First operand has 24 places, 22 transitions, 48 flow. Second operand 3 states and 96 transitions. [2023-11-17 11:30:51,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 29 transitions, 120 flow [2023-11-17 11:30:51,945 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 11:30:51,946 INFO L231 Difference]: Finished difference. Result has 27 places, 24 transitions, 70 flow [2023-11-17 11:30:51,946 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 11:30:51,947 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -2 predicate places. [2023-11-17 11:30:51,948 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 24 transitions, 70 flow [2023-11-17 11:30:51,948 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 11:30:51,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:51,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-17 11:30:51,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:30:51,949 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 11:30:51,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:51,951 INFO L85 PathProgramCache]: Analyzing trace with hash 507398, now seen corresponding path program 1 times [2023-11-17 11:30:51,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:51,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997408982] [2023-11-17 11:30:51,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:51,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:51,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:52,112 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 11:30:52,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:52,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997408982] [2023-11-17 11:30:52,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997408982] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:52,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:52,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:30:52,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867665528] [2023-11-17 11:30:52,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:52,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:30:52,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:52,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:30:52,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:30:52,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 109 [2023-11-17 11:30:52,120 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 11:30:52,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:52,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 109 [2023-11-17 11:30:52,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:52,246 INFO L124 PetriNetUnfolderBase]: 114/225 cut-off events. [2023-11-17 11:30:52,246 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2023-11-17 11:30:52,247 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 826 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 11:30:52,249 INFO L140 encePairwiseOnDemand]: 105/109 looper letters, 25 selfloop transitions, 2 changer transitions 2/29 dead transitions. [2023-11-17 11:30:52,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 29 transitions, 142 flow [2023-11-17 11:30:52,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:30:52,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:30:52,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2023-11-17 11:30:52,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.17737003058103976 [2023-11-17 11:30:52,251 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 58 transitions. [2023-11-17 11:30:52,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 58 transitions. [2023-11-17 11:30:52,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:52,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 58 transitions. [2023-11-17 11:30:52,253 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 11:30:52,254 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 11:30:52,254 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 11:30:52,254 INFO L175 Difference]: Start difference. First operand has 27 places, 24 transitions, 70 flow. Second operand 3 states and 58 transitions. [2023-11-17 11:30:52,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 29 transitions, 142 flow [2023-11-17 11:30:52,257 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 11:30:52,258 INFO L231 Difference]: Finished difference. Result has 27 places, 21 transitions, 62 flow [2023-11-17 11:30:52,258 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 11:30:52,259 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -2 predicate places. [2023-11-17 11:30:52,259 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 21 transitions, 62 flow [2023-11-17 11:30:52,259 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 11:30:52,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:52,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:52,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 11:30:52,260 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 11:30:52,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:52,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1613639353, now seen corresponding path program 1 times [2023-11-17 11:30:52,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:52,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339307996] [2023-11-17 11:30:52,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:52,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:52,381 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 11:30:52,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:52,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339307996] [2023-11-17 11:30:52,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339307996] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:52,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:52,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:30:52,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325705450] [2023-11-17 11:30:52,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:52,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:30:52,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:52,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:30:52,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:30:52,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 109 [2023-11-17 11:30:52,386 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 11:30:52,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:52,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 109 [2023-11-17 11:30:52,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:52,460 INFO L124 PetriNetUnfolderBase]: 69/137 cut-off events. [2023-11-17 11:30:52,460 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2023-11-17 11:30:52,461 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 409 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 11:30:52,462 INFO L140 encePairwiseOnDemand]: 107/109 looper letters, 22 selfloop transitions, 1 changer transitions 0/23 dead transitions. [2023-11-17 11:30:52,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 23 transitions, 104 flow [2023-11-17 11:30:52,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:30:52,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:30:52,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2023-11-17 11:30:52,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26605504587155965 [2023-11-17 11:30:52,463 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 87 transitions. [2023-11-17 11:30:52,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 87 transitions. [2023-11-17 11:30:52,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:52,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 87 transitions. [2023-11-17 11:30:52,464 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 11:30:52,465 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 11:30:52,466 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 11:30:52,466 INFO L175 Difference]: Start difference. First operand has 27 places, 21 transitions, 62 flow. Second operand 3 states and 87 transitions. [2023-11-17 11:30:52,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 23 transitions, 104 flow [2023-11-17 11:30:52,466 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 11:30:52,467 INFO L231 Difference]: Finished difference. Result has 25 places, 17 transitions, 44 flow [2023-11-17 11:30:52,467 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 11:30:52,468 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -4 predicate places. [2023-11-17 11:30:52,468 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 44 flow [2023-11-17 11:30:52,468 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 11:30:52,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:52,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:52,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 11:30:52,469 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 11:30:52,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:52,470 INFO L85 PathProgramCache]: Analyzing trace with hash -315326249, now seen corresponding path program 1 times [2023-11-17 11:30:52,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:52,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763675675] [2023-11-17 11:30:52,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:52,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:52,867 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 11:30:52,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:52,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763675675] [2023-11-17 11:30:52,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763675675] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:52,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:52,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:30:52,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058809553] [2023-11-17 11:30:52,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:52,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:30:52,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:52,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:30:52,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:30:52,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:30:52,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:52,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:52,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:30:52,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:52,951 INFO L124 PetriNetUnfolderBase]: 67/141 cut-off events. [2023-11-17 11:30:52,952 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-11-17 11:30:52,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 141 events. 67/141 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 459 event pairs, 35 based on Foata normal form. 6/146 useless extension candidates. Maximal degree in co-relation 336. Up to 88 conditions per place. [2023-11-17 11:30:52,956 INFO L140 encePairwiseOnDemand]: 105/109 looper letters, 22 selfloop transitions, 3 changer transitions 0/25 dead transitions. [2023-11-17 11:30:52,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 25 transitions, 117 flow [2023-11-17 11:30:52,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:30:52,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:30:52,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2023-11-17 11:30:52,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28134556574923547 [2023-11-17 11:30:52,961 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 92 transitions. [2023-11-17 11:30:52,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 92 transitions. [2023-11-17 11:30:52,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:52,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 92 transitions. [2023-11-17 11:30:52,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:52,963 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 11:30:52,963 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 11:30:52,964 INFO L175 Difference]: Start difference. First operand has 25 places, 17 transitions, 44 flow. Second operand 3 states and 92 transitions. [2023-11-17 11:30:52,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 25 transitions, 117 flow [2023-11-17 11:30:52,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 25 transitions, 115 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:30:52,965 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 62 flow [2023-11-17 11:30:52,965 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=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2023-11-17 11:30:52,966 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -2 predicate places. [2023-11-17 11:30:52,966 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 62 flow [2023-11-17 11:30:52,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:52,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:52,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:52,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 11:30:52,967 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 11:30:52,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:52,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1092046758, now seen corresponding path program 1 times [2023-11-17 11:30:52,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:52,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256200575] [2023-11-17 11:30:52,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:52,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:54,181 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 11:30:54,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:54,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256200575] [2023-11-17 11:30:54,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256200575] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:54,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:54,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 11:30:54,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089015568] [2023-11-17 11:30:54,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:54,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 11:30:54,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:54,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 11:30:54,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-17 11:30:54,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:30:54,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 62 flow. Second operand has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:54,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:54,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:30:54,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:54,573 INFO L124 PetriNetUnfolderBase]: 86/187 cut-off events. [2023-11-17 11:30:54,573 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2023-11-17 11:30:54,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 540 conditions, 187 events. 86/187 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 677 event pairs, 6 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 533. Up to 115 conditions per place. [2023-11-17 11:30:54,575 INFO L140 encePairwiseOnDemand]: 99/109 looper letters, 39 selfloop transitions, 14 changer transitions 0/53 dead transitions. [2023-11-17 11:30:54,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 53 transitions, 272 flow [2023-11-17 11:30:54,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 11:30:54,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 11:30:54,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 228 transitions. [2023-11-17 11:30:54,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26146788990825687 [2023-11-17 11:30:54,577 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 228 transitions. [2023-11-17 11:30:54,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 228 transitions. [2023-11-17 11:30:54,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:54,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 228 transitions. [2023-11-17 11:30:54,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 28.5) internal successors, (228), 8 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:54,580 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 11:30:54,580 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 11:30:54,580 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 62 flow. Second operand 8 states and 228 transitions. [2023-11-17 11:30:54,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 53 transitions, 272 flow [2023-11-17 11:30:54,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 53 transitions, 267 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:30:54,582 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 166 flow [2023-11-17 11:30:54,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=166, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2023-11-17 11:30:54,583 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2023-11-17 11:30:54,583 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 166 flow [2023-11-17 11:30:54,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:54,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:54,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:54,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 11:30:54,584 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 11:30:54,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:54,584 INFO L85 PathProgramCache]: Analyzing trace with hash 2075720845, now seen corresponding path program 2 times [2023-11-17 11:30:54,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:54,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178305334] [2023-11-17 11:30:54,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:54,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:54,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:55,106 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 11:30:55,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:55,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178305334] [2023-11-17 11:30:55,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178305334] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:55,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:55,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 11:30:55,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007596152] [2023-11-17 11:30:55,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:55,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:30:55,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:55,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:30:55,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:30:55,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:30:55,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 166 flow. Second operand has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:55,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:55,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:30:55,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:55,337 INFO L124 PetriNetUnfolderBase]: 101/241 cut-off events. [2023-11-17 11:30:55,337 INFO L125 PetriNetUnfolderBase]: For 269/269 co-relation queries the response was YES. [2023-11-17 11:30:55,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 866 conditions, 241 events. 101/241 cut-off events. For 269/269 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1032 event pairs, 15 based on Foata normal form. 1/240 useless extension candidates. Maximal degree in co-relation 854. Up to 111 conditions per place. [2023-11-17 11:30:55,340 INFO L140 encePairwiseOnDemand]: 102/109 looper letters, 51 selfloop transitions, 14 changer transitions 2/67 dead transitions. [2023-11-17 11:30:55,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 67 transitions, 476 flow [2023-11-17 11:30:55,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:30:55,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:30:55,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2023-11-17 11:30:55,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26758409785932724 [2023-11-17 11:30:55,342 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 175 transitions. [2023-11-17 11:30:55,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 175 transitions. [2023-11-17 11:30:55,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:55,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 175 transitions. [2023-11-17 11:30:55,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:55,344 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 11:30:55,344 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 11:30:55,344 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 166 flow. Second operand 6 states and 175 transitions. [2023-11-17 11:30:55,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 67 transitions, 476 flow [2023-11-17 11:30:55,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 67 transitions, 454 flow, removed 11 selfloop flow, removed 0 redundant places. [2023-11-17 11:30:55,348 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 244 flow [2023-11-17 11:30:55,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=244, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2023-11-17 11:30:55,349 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2023-11-17 11:30:55,349 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 244 flow [2023-11-17 11:30:55,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:55,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:55,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:55,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 11:30:55,349 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 11:30:55,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:55,350 INFO L85 PathProgramCache]: Analyzing trace with hash -167093302, now seen corresponding path program 2 times [2023-11-17 11:30:55,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:55,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213562421] [2023-11-17 11:30:55,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:55,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:55,776 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 11:30:55,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:55,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213562421] [2023-11-17 11:30:55,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213562421] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:55,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:55,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:30:55,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70423388] [2023-11-17 11:30:55,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:55,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:30:55,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:55,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:30:55,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:30:55,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:30:55,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:55,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:55,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:30:55,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:55,837 INFO L124 PetriNetUnfolderBase]: 52/148 cut-off events. [2023-11-17 11:30:55,837 INFO L125 PetriNetUnfolderBase]: For 310/310 co-relation queries the response was YES. [2023-11-17 11:30:55,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 583 conditions, 148 events. 52/148 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 533 event pairs, 21 based on Foata normal form. 9/155 useless extension candidates. Maximal degree in co-relation 567. Up to 100 conditions per place. [2023-11-17 11:30:55,839 INFO L140 encePairwiseOnDemand]: 106/109 looper letters, 33 selfloop transitions, 3 changer transitions 0/36 dead transitions. [2023-11-17 11:30:55,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 36 transitions, 296 flow [2023-11-17 11:30:55,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:30:55,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:30:55,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2023-11-17 11:30:55,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2691131498470948 [2023-11-17 11:30:55,840 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 88 transitions. [2023-11-17 11:30:55,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 88 transitions. [2023-11-17 11:30:55,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:55,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 88 transitions. [2023-11-17 11:30:55,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:55,844 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 11:30:55,844 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 11:30:55,844 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 244 flow. Second operand 3 states and 88 transitions. [2023-11-17 11:30:55,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 36 transitions, 296 flow [2023-11-17 11:30:55,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 36 transitions, 265 flow, removed 11 selfloop flow, removed 5 redundant places. [2023-11-17 11:30:55,849 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 186 flow [2023-11-17 11:30:55,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2023-11-17 11:30:55,849 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2023-11-17 11:30:55,850 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 186 flow [2023-11-17 11:30:55,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:55,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:55,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:55,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 11:30:55,850 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 11:30:55,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:55,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1185364598, now seen corresponding path program 3 times [2023-11-17 11:30:55,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:55,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887766393] [2023-11-17 11:30:55,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:55,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:55,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:56,995 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 11:30:56,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:56,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887766393] [2023-11-17 11:30:56,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887766393] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:56,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:56,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 11:30:56,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929975084] [2023-11-17 11:30:56,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:56,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 11:30:56,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:56,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 11:30:56,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-17 11:30:56,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:30:56,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 186 flow. Second operand has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:56,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:56,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:30:56,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:57,363 INFO L124 PetriNetUnfolderBase]: 51/147 cut-off events. [2023-11-17 11:30:57,363 INFO L125 PetriNetUnfolderBase]: For 336/336 co-relation queries the response was YES. [2023-11-17 11:30:57,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 147 events. 51/147 cut-off events. For 336/336 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 543 event pairs, 12 based on Foata normal form. 1/146 useless extension candidates. Maximal degree in co-relation 569. Up to 72 conditions per place. [2023-11-17 11:30:57,365 INFO L140 encePairwiseOnDemand]: 101/109 looper letters, 35 selfloop transitions, 13 changer transitions 8/56 dead transitions. [2023-11-17 11:30:57,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 56 transitions, 417 flow [2023-11-17 11:30:57,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 11:30:57,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 11:30:57,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 224 transitions. [2023-11-17 11:30:57,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25688073394495414 [2023-11-17 11:30:57,367 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 224 transitions. [2023-11-17 11:30:57,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 224 transitions. [2023-11-17 11:30:57,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:57,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 224 transitions. [2023-11-17 11:30:57,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:57,369 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 11:30:57,370 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 11:30:57,370 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 186 flow. Second operand 8 states and 224 transitions. [2023-11-17 11:30:57,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 56 transitions, 417 flow [2023-11-17 11:30:57,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 56 transitions, 405 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:30:57,373 INFO L231 Difference]: Finished difference. Result has 49 places, 34 transitions, 238 flow [2023-11-17 11:30:57,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=238, PETRI_PLACES=49, PETRI_TRANSITIONS=34} [2023-11-17 11:30:57,373 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 20 predicate places. [2023-11-17 11:30:57,374 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 34 transitions, 238 flow [2023-11-17 11:30:57,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:57,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:57,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:57,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 11:30:57,374 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 11:30:57,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:57,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1444288870, now seen corresponding path program 4 times [2023-11-17 11:30:57,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:57,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815707056] [2023-11-17 11:30:57,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:57,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:58,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:58,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:58,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815707056] [2023-11-17 11:30:58,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815707056] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:58,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:58,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 11:30:58,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846201622] [2023-11-17 11:30:58,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:58,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 11:30:58,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:58,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 11:30:58,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-17 11:30:58,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:30:58,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 34 transitions, 238 flow. Second operand has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:58,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:58,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:30:58,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:58,694 INFO L124 PetriNetUnfolderBase]: 53/154 cut-off events. [2023-11-17 11:30:58,694 INFO L125 PetriNetUnfolderBase]: For 516/516 co-relation queries the response was YES. [2023-11-17 11:30:58,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 671 conditions, 154 events. 53/154 cut-off events. For 516/516 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 561 event pairs, 22 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 654. Up to 115 conditions per place. [2023-11-17 11:30:58,696 INFO L140 encePairwiseOnDemand]: 101/109 looper letters, 43 selfloop transitions, 15 changer transitions 0/58 dead transitions. [2023-11-17 11:30:58,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 524 flow [2023-11-17 11:30:58,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 11:30:58,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 11:30:58,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2023-11-17 11:30:58,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2511467889908257 [2023-11-17 11:30:58,698 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 219 transitions. [2023-11-17 11:30:58,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 219 transitions. [2023-11-17 11:30:58,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:58,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 219 transitions. [2023-11-17 11:30:58,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 27.375) internal successors, (219), 8 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:58,700 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 11:30:58,700 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 11:30:58,700 INFO L175 Difference]: Start difference. First operand has 49 places, 34 transitions, 238 flow. Second operand 8 states and 219 transitions. [2023-11-17 11:30:58,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 58 transitions, 524 flow [2023-11-17 11:30:58,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 509 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-17 11:30:58,704 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 392 flow [2023-11-17 11:30:58,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=392, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2023-11-17 11:30:58,704 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2023-11-17 11:30:58,705 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 392 flow [2023-11-17 11:30:58,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:58,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:58,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:58,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 11:30:58,705 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 11:30:58,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:58,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1444288889, now seen corresponding path program 3 times [2023-11-17 11:30:58,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:58,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819486681] [2023-11-17 11:30:58,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:58,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:59,184 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 11:30:59,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:59,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819486681] [2023-11-17 11:30:59,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819486681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:59,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:59,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 11:30:59,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341382922] [2023-11-17 11:30:59,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:59,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:30:59,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:59,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:30:59,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:30:59,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:30:59,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 392 flow. Second operand has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:59,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:59,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:30:59,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:59,392 INFO L124 PetriNetUnfolderBase]: 52/157 cut-off events. [2023-11-17 11:30:59,393 INFO L125 PetriNetUnfolderBase]: For 650/650 co-relation queries the response was YES. [2023-11-17 11:30:59,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 745 conditions, 157 events. 52/157 cut-off events. For 650/650 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 606 event pairs, 20 based on Foata normal form. 1/156 useless extension candidates. Maximal degree in co-relation 722. Up to 69 conditions per place. [2023-11-17 11:30:59,394 INFO L140 encePairwiseOnDemand]: 102/109 looper letters, 40 selfloop transitions, 18 changer transitions 6/64 dead transitions. [2023-11-17 11:30:59,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 64 transitions, 645 flow [2023-11-17 11:30:59,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:30:59,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:30:59,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 170 transitions. [2023-11-17 11:30:59,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2599388379204893 [2023-11-17 11:30:59,396 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 170 transitions. [2023-11-17 11:30:59,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 170 transitions. [2023-11-17 11:30:59,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:59,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 170 transitions. [2023-11-17 11:30:59,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:59,398 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 11:30:59,398 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 11:30:59,399 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 392 flow. Second operand 6 states and 170 transitions. [2023-11-17 11:30:59,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 64 transitions, 645 flow [2023-11-17 11:30:59,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 64 transitions, 629 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-11-17 11:30:59,403 INFO L231 Difference]: Finished difference. Result has 64 places, 45 transitions, 435 flow [2023-11-17 11:30:59,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=435, PETRI_PLACES=64, PETRI_TRANSITIONS=45} [2023-11-17 11:30:59,404 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2023-11-17 11:30:59,404 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 45 transitions, 435 flow [2023-11-17 11:30:59,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:59,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:59,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:59,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 11:30:59,405 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 11:30:59,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:59,405 INFO L85 PathProgramCache]: Analyzing trace with hash -438628116, now seen corresponding path program 5 times [2023-11-17 11:30:59,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:59,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487421343] [2023-11-17 11:30:59,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:59,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:31:00,449 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 11:31:00,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:31:00,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487421343] [2023-11-17 11:31:00,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487421343] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:31:00,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:31:00,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 11:31:00,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126422644] [2023-11-17 11:31:00,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:31:00,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 11:31:00,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:31:00,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 11:31:00,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-17 11:31:00,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:31:00,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 45 transitions, 435 flow. Second operand has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:00,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:31:00,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:31:00,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:31:00,762 INFO L124 PetriNetUnfolderBase]: 45/135 cut-off events. [2023-11-17 11:31:00,762 INFO L125 PetriNetUnfolderBase]: For 783/783 co-relation queries the response was YES. [2023-11-17 11:31:00,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 682 conditions, 135 events. 45/135 cut-off events. For 783/783 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 468 event pairs, 21 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 656. Up to 109 conditions per place. [2023-11-17 11:31:00,764 INFO L140 encePairwiseOnDemand]: 101/109 looper letters, 41 selfloop transitions, 12 changer transitions 0/53 dead transitions. [2023-11-17 11:31:00,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 53 transitions, 582 flow [2023-11-17 11:31:00,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 11:31:00,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 11:31:00,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2023-11-17 11:31:00,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24541284403669725 [2023-11-17 11:31:00,766 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 214 transitions. [2023-11-17 11:31:00,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 214 transitions. [2023-11-17 11:31:00,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:31:00,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 214 transitions. [2023-11-17 11:31:00,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:00,768 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 11:31:00,768 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 11:31:00,768 INFO L175 Difference]: Start difference. First operand has 64 places, 45 transitions, 435 flow. Second operand 8 states and 214 transitions. [2023-11-17 11:31:00,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 53 transitions, 582 flow [2023-11-17 11:31:00,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 53 transitions, 538 flow, removed 14 selfloop flow, removed 6 redundant places. [2023-11-17 11:31:00,773 INFO L231 Difference]: Finished difference. Result has 63 places, 46 transitions, 441 flow [2023-11-17 11:31:00,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=441, PETRI_PLACES=63, PETRI_TRANSITIONS=46} [2023-11-17 11:31:00,774 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 34 predicate places. [2023-11-17 11:31:00,774 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 46 transitions, 441 flow [2023-11-17 11:31:00,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:00,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:31:00,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:31:00,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-17 11:31:00,775 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 11:31:00,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:31:00,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1892331226, now seen corresponding path program 6 times [2023-11-17 11:31:00,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:31:00,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621058602] [2023-11-17 11:31:00,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:31:00,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:31:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:31:01,655 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 11:31:01,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:31:01,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621058602] [2023-11-17 11:31:01,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621058602] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:31:01,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:31:01,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 11:31:01,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341144380] [2023-11-17 11:31:01,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:31:01,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 11:31:01,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:31:01,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 11:31:01,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-17 11:31:01,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:31:01,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 46 transitions, 441 flow. Second operand has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:01,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:31:01,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:31:01,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:31:01,969 INFO L124 PetriNetUnfolderBase]: 50/154 cut-off events. [2023-11-17 11:31:01,969 INFO L125 PetriNetUnfolderBase]: For 754/754 co-relation queries the response was YES. [2023-11-17 11:31:01,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 774 conditions, 154 events. 50/154 cut-off events. For 754/754 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 598 event pairs, 12 based on Foata normal form. 1/154 useless extension candidates. Maximal degree in co-relation 750. Up to 94 conditions per place. [2023-11-17 11:31:01,971 INFO L140 encePairwiseOnDemand]: 100/109 looper letters, 44 selfloop transitions, 12 changer transitions 14/70 dead transitions. [2023-11-17 11:31:01,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 70 transitions, 732 flow [2023-11-17 11:31:01,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 11:31:01,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 11:31:01,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 225 transitions. [2023-11-17 11:31:01,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2580275229357798 [2023-11-17 11:31:01,972 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 225 transitions. [2023-11-17 11:31:01,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 225 transitions. [2023-11-17 11:31:01,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:31:01,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 225 transitions. [2023-11-17 11:31:01,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 28.125) internal successors, (225), 8 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:01,975 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 11:31:01,975 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 11:31:01,975 INFO L175 Difference]: Start difference. First operand has 63 places, 46 transitions, 441 flow. Second operand 8 states and 225 transitions. [2023-11-17 11:31:01,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 70 transitions, 732 flow [2023-11-17 11:31:01,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 70 transitions, 708 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-17 11:31:01,980 INFO L231 Difference]: Finished difference. Result has 71 places, 46 transitions, 460 flow [2023-11-17 11:31:01,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=460, PETRI_PLACES=71, PETRI_TRANSITIONS=46} [2023-11-17 11:31:01,981 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 42 predicate places. [2023-11-17 11:31:01,981 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 46 transitions, 460 flow [2023-11-17 11:31:01,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:01,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:31:01,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:31:01,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-17 11:31:01,982 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 11:31:01,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:31:01,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1911627028, now seen corresponding path program 7 times [2023-11-17 11:31:01,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:31:01,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493823535] [2023-11-17 11:31:01,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:31:01,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:31:02,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:31:02,951 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 11:31:02,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:31:02,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493823535] [2023-11-17 11:31:02,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493823535] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:31:02,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:31:02,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 11:31:02,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239311055] [2023-11-17 11:31:02,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:31:02,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 11:31:02,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:31:02,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 11:31:02,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-17 11:31:02,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:31:02,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 46 transitions, 460 flow. Second operand has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:02,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:31:02,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:31:02,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:31:03,252 INFO L124 PetriNetUnfolderBase]: 48/154 cut-off events. [2023-11-17 11:31:03,252 INFO L125 PetriNetUnfolderBase]: For 737/737 co-relation queries the response was YES. [2023-11-17 11:31:03,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 769 conditions, 154 events. 48/154 cut-off events. For 737/737 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 603 event pairs, 10 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 741. Up to 92 conditions per place. [2023-11-17 11:31:03,254 INFO L140 encePairwiseOnDemand]: 99/109 looper letters, 51 selfloop transitions, 17 changer transitions 0/68 dead transitions. [2023-11-17 11:31:03,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 68 transitions, 695 flow [2023-11-17 11:31:03,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 11:31:03,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 11:31:03,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 226 transitions. [2023-11-17 11:31:03,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2591743119266055 [2023-11-17 11:31:03,255 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 226 transitions. [2023-11-17 11:31:03,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 226 transitions. [2023-11-17 11:31:03,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:31:03,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 226 transitions. [2023-11-17 11:31:03,256 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 11:31:03,258 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 11:31:03,258 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 11:31:03,258 INFO L175 Difference]: Start difference. First operand has 71 places, 46 transitions, 460 flow. Second operand 8 states and 226 transitions. [2023-11-17 11:31:03,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 68 transitions, 695 flow [2023-11-17 11:31:03,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 68 transitions, 663 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-11-17 11:31:03,263 INFO L231 Difference]: Finished difference. Result has 70 places, 49 transitions, 505 flow [2023-11-17 11:31:03,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=505, PETRI_PLACES=70, PETRI_TRANSITIONS=49} [2023-11-17 11:31:03,264 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2023-11-17 11:31:03,264 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 49 transitions, 505 flow [2023-11-17 11:31:03,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:03,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:31:03,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:31:03,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-17 11:31:03,264 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 11:31:03,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:31:03,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1911627047, now seen corresponding path program 4 times [2023-11-17 11:31:03,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:31:03,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779146167] [2023-11-17 11:31:03,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:31:03,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:31:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:31:03,660 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 11:31:03,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:31:03,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779146167] [2023-11-17 11:31:03,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779146167] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:31:03,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:31:03,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 11:31:03,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150244047] [2023-11-17 11:31:03,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:31:03,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:31:03,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:31:03,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:31:03,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:31:03,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:31:03,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 49 transitions, 505 flow. Second operand has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:03,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:31:03,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:31:03,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:31:03,865 INFO L124 PetriNetUnfolderBase]: 47/162 cut-off events. [2023-11-17 11:31:03,865 INFO L125 PetriNetUnfolderBase]: For 905/905 co-relation queries the response was YES. [2023-11-17 11:31:03,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 822 conditions, 162 events. 47/162 cut-off events. For 905/905 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 667 event pairs, 11 based on Foata normal form. 1/162 useless extension candidates. Maximal degree in co-relation 795. Up to 45 conditions per place. [2023-11-17 11:31:03,867 INFO L140 encePairwiseOnDemand]: 101/109 looper letters, 35 selfloop transitions, 27 changer transitions 3/65 dead transitions. [2023-11-17 11:31:03,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 65 transitions, 721 flow [2023-11-17 11:31:03,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:31:03,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:31:03,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 171 transitions. [2023-11-17 11:31:03,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26146788990825687 [2023-11-17 11:31:03,869 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 171 transitions. [2023-11-17 11:31:03,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 171 transitions. [2023-11-17 11:31:03,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:31:03,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 171 transitions. [2023-11-17 11:31:03,869 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 11:31:03,870 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 11:31:03,871 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 11:31:03,871 INFO L175 Difference]: Start difference. First operand has 70 places, 49 transitions, 505 flow. Second operand 6 states and 171 transitions. [2023-11-17 11:31:03,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 65 transitions, 721 flow [2023-11-17 11:31:03,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 65 transitions, 682 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-11-17 11:31:03,875 INFO L231 Difference]: Finished difference. Result has 71 places, 50 transitions, 535 flow [2023-11-17 11:31:03,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=535, PETRI_PLACES=71, PETRI_TRANSITIONS=50} [2023-11-17 11:31:03,876 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 42 predicate places. [2023-11-17 11:31:03,876 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 50 transitions, 535 flow [2023-11-17 11:31:03,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:03,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:31:03,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:31:03,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-17 11:31:03,877 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 11:31:03,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:31:03,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1196638590, now seen corresponding path program 8 times [2023-11-17 11:31:03,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:31:03,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915454583] [2023-11-17 11:31:03,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:31:03,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:31:03,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:31:04,745 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 11:31:04,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:31:04,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915454583] [2023-11-17 11:31:04,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915454583] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:31:04,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:31:04,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 11:31:04,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460643718] [2023-11-17 11:31:04,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:31:04,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 11:31:04,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:31:04,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 11:31:04,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-17 11:31:04,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:31:04,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 50 transitions, 535 flow. Second operand has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:04,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:31:04,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:31:04,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:31:05,009 INFO L124 PetriNetUnfolderBase]: 39/149 cut-off events. [2023-11-17 11:31:05,009 INFO L125 PetriNetUnfolderBase]: For 906/906 co-relation queries the response was YES. [2023-11-17 11:31:05,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 784 conditions, 149 events. 39/149 cut-off events. For 906/906 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 610 event pairs, 18 based on Foata normal form. 2/150 useless extension candidates. Maximal degree in co-relation 756. Up to 109 conditions per place. [2023-11-17 11:31:05,010 INFO L140 encePairwiseOnDemand]: 102/109 looper letters, 40 selfloop transitions, 6 changer transitions 18/64 dead transitions. [2023-11-17 11:31:05,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 64 transitions, 740 flow [2023-11-17 11:31:05,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 11:31:05,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 11:31:05,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 218 transitions. [2023-11-17 11:31:05,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25 [2023-11-17 11:31:05,013 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 218 transitions. [2023-11-17 11:31:05,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 218 transitions. [2023-11-17 11:31:05,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:31:05,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 218 transitions. [2023-11-17 11:31:05,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:05,016 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 11:31:05,016 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 11:31:05,016 INFO L175 Difference]: Start difference. First operand has 71 places, 50 transitions, 535 flow. Second operand 8 states and 218 transitions. [2023-11-17 11:31:05,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 64 transitions, 740 flow [2023-11-17 11:31:05,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 64 transitions, 687 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-11-17 11:31:05,024 INFO L231 Difference]: Finished difference. Result has 77 places, 44 transitions, 433 flow [2023-11-17 11:31:05,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=433, PETRI_PLACES=77, PETRI_TRANSITIONS=44} [2023-11-17 11:31:05,025 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 48 predicate places. [2023-11-17 11:31:05,025 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 44 transitions, 433 flow [2023-11-17 11:31:05,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:05,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:31:05,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:31:05,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-17 11:31:05,025 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 11:31:05,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:31:05,026 INFO L85 PathProgramCache]: Analyzing trace with hash 140155698, now seen corresponding path program 9 times [2023-11-17 11:31:05,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:31:05,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580798513] [2023-11-17 11:31:05,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:31:05,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:31:05,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:31:05,898 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 11:31:05,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:31:05,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580798513] [2023-11-17 11:31:05,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580798513] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:31:05,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:31:05,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 11:31:05,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182030229] [2023-11-17 11:31:05,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:31:05,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 11:31:05,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:31:05,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 11:31:05,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-17 11:31:05,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:31:05,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 44 transitions, 433 flow. Second operand has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:05,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:31:05,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:31:05,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:31:06,239 INFO L124 PetriNetUnfolderBase]: 33/124 cut-off events. [2023-11-17 11:31:06,239 INFO L125 PetriNetUnfolderBase]: For 555/555 co-relation queries the response was YES. [2023-11-17 11:31:06,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 124 events. 33/124 cut-off events. For 555/555 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 439 event pairs, 11 based on Foata normal form. 2/125 useless extension candidates. Maximal degree in co-relation 588. Up to 60 conditions per place. [2023-11-17 11:31:06,240 INFO L140 encePairwiseOnDemand]: 102/109 looper letters, 31 selfloop transitions, 7 changer transitions 17/55 dead transitions. [2023-11-17 11:31:06,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 55 transitions, 564 flow [2023-11-17 11:31:06,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 11:31:06,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 11:31:06,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2023-11-17 11:31:06,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2511467889908257 [2023-11-17 11:31:06,243 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 219 transitions. [2023-11-17 11:31:06,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 219 transitions. [2023-11-17 11:31:06,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:31:06,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 219 transitions. [2023-11-17 11:31:06,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 27.375) internal successors, (219), 8 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:06,246 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 11:31:06,247 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 11:31:06,247 INFO L175 Difference]: Start difference. First operand has 77 places, 44 transitions, 433 flow. Second operand 8 states and 219 transitions. [2023-11-17 11:31:06,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 55 transitions, 564 flow [2023-11-17 11:31:06,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 55 transitions, 530 flow, removed 9 selfloop flow, removed 8 redundant places. [2023-11-17 11:31:06,251 INFO L231 Difference]: Finished difference. Result has 70 places, 34 transitions, 308 flow [2023-11-17 11:31:06,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=308, PETRI_PLACES=70, PETRI_TRANSITIONS=34} [2023-11-17 11:31:06,252 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2023-11-17 11:31:06,252 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 34 transitions, 308 flow [2023-11-17 11:31:06,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:06,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:31:06,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:31:06,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-17 11:31:06,253 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 11:31:06,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:31:06,253 INFO L85 PathProgramCache]: Analyzing trace with hash -582671767, now seen corresponding path program 5 times [2023-11-17 11:31:06,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:31:06,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907756599] [2023-11-17 11:31:06,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:31:06,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:31:06,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:31:06,631 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 11:31:06,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:31:06,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907756599] [2023-11-17 11:31:06,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907756599] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:31:06,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:31:06,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 11:31:06,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507024385] [2023-11-17 11:31:06,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:31:06,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:31:06,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:31:06,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:31:06,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:31:06,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:31:06,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 34 transitions, 308 flow. Second operand has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:06,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:31:06,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:31:06,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:31:06,798 INFO L124 PetriNetUnfolderBase]: 27/106 cut-off events. [2023-11-17 11:31:06,798 INFO L125 PetriNetUnfolderBase]: For 430/430 co-relation queries the response was YES. [2023-11-17 11:31:06,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 508 conditions, 106 events. 27/106 cut-off events. For 430/430 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 347 event pairs, 19 based on Foata normal form. 1/106 useless extension candidates. Maximal degree in co-relation 482. Up to 64 conditions per place. [2023-11-17 11:31:06,799 INFO L140 encePairwiseOnDemand]: 103/109 looper letters, 26 selfloop transitions, 11 changer transitions 5/42 dead transitions. [2023-11-17 11:31:06,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 42 transitions, 428 flow [2023-11-17 11:31:06,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:31:06,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:31:06,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 162 transitions. [2023-11-17 11:31:06,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24770642201834864 [2023-11-17 11:31:06,803 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 162 transitions. [2023-11-17 11:31:06,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 162 transitions. [2023-11-17 11:31:06,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:31:06,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 162 transitions. [2023-11-17 11:31:06,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:06,804 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 11:31:06,804 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 11:31:06,805 INFO L175 Difference]: Start difference. First operand has 70 places, 34 transitions, 308 flow. Second operand 6 states and 162 transitions. [2023-11-17 11:31:06,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 42 transitions, 428 flow [2023-11-17 11:31:06,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 42 transitions, 367 flow, removed 8 selfloop flow, removed 11 redundant places. [2023-11-17 11:31:06,807 INFO L231 Difference]: Finished difference. Result has 63 places, 31 transitions, 254 flow [2023-11-17 11:31:06,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=254, PETRI_PLACES=63, PETRI_TRANSITIONS=31} [2023-11-17 11:31:06,808 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 34 predicate places. [2023-11-17 11:31:06,808 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 31 transitions, 254 flow [2023-11-17 11:31:06,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:06,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:31:06,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:31:06,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-17 11:31:06,809 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 11:31:06,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:31:06,810 INFO L85 PathProgramCache]: Analyzing trace with hash -582671748, now seen corresponding path program 10 times [2023-11-17 11:31:06,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:31:06,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297585813] [2023-11-17 11:31:06,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:31:06,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:31:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:31:07,613 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 11:31:07,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:31:07,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297585813] [2023-11-17 11:31:07,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297585813] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:31:07,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:31:07,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 11:31:07,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563669754] [2023-11-17 11:31:07,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:31:07,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 11:31:07,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:31:07,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 11:31:07,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-17 11:31:07,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:31:07,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 31 transitions, 254 flow. Second operand has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:07,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:31:07,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:31:07,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:31:07,901 INFO L124 PetriNetUnfolderBase]: 26/100 cut-off events. [2023-11-17 11:31:07,902 INFO L125 PetriNetUnfolderBase]: For 376/376 co-relation queries the response was YES. [2023-11-17 11:31:07,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438 conditions, 100 events. 26/100 cut-off events. For 376/376 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 312 event pairs, 12 based on Foata normal form. 1/100 useless extension candidates. Maximal degree in co-relation 415. Up to 63 conditions per place. [2023-11-17 11:31:07,903 INFO L140 encePairwiseOnDemand]: 102/109 looper letters, 27 selfloop transitions, 9 changer transitions 7/43 dead transitions. [2023-11-17 11:31:07,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 43 transitions, 394 flow [2023-11-17 11:31:07,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 11:31:07,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 11:31:07,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2023-11-17 11:31:07,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24541284403669725 [2023-11-17 11:31:07,904 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 214 transitions. [2023-11-17 11:31:07,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 214 transitions. [2023-11-17 11:31:07,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:31:07,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 214 transitions. [2023-11-17 11:31:07,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:07,906 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 11:31:07,907 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 11:31:07,907 INFO L175 Difference]: Start difference. First operand has 63 places, 31 transitions, 254 flow. Second operand 8 states and 214 transitions. [2023-11-17 11:31:07,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 43 transitions, 394 flow [2023-11-17 11:31:07,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 43 transitions, 340 flow, removed 6 selfloop flow, removed 9 redundant places. [2023-11-17 11:31:07,909 INFO L231 Difference]: Finished difference. Result has 60 places, 31 transitions, 238 flow [2023-11-17 11:31:07,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=238, PETRI_PLACES=60, PETRI_TRANSITIONS=31} [2023-11-17 11:31:07,910 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 31 predicate places. [2023-11-17 11:31:07,910 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 31 transitions, 238 flow [2023-11-17 11:31:07,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:07,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:31:07,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:31:07,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-17 11:31:07,911 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 11:31:07,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:31:07,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1731421676, now seen corresponding path program 11 times [2023-11-17 11:31:07,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:31:07,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044654976] [2023-11-17 11:31:07,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:31:07,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:31:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:31:08,750 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 11:31:08,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:31:08,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044654976] [2023-11-17 11:31:08,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044654976] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:31:08,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:31:08,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 11:31:08,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992619756] [2023-11-17 11:31:08,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:31:08,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 11:31:08,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:31:08,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 11:31:08,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-17 11:31:08,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:31:08,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 31 transitions, 238 flow. Second operand has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:08,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:31:08,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:31:08,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:31:09,020 INFO L124 PetriNetUnfolderBase]: 25/93 cut-off events. [2023-11-17 11:31:09,020 INFO L125 PetriNetUnfolderBase]: For 267/267 co-relation queries the response was YES. [2023-11-17 11:31:09,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 396 conditions, 93 events. 25/93 cut-off events. For 267/267 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 274 event pairs, 13 based on Foata normal form. 1/93 useless extension candidates. Maximal degree in co-relation 376. Up to 70 conditions per place. [2023-11-17 11:31:09,021 INFO L140 encePairwiseOnDemand]: 102/109 looper letters, 25 selfloop transitions, 4 changer transitions 9/38 dead transitions. [2023-11-17 11:31:09,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 38 transitions, 330 flow [2023-11-17 11:31:09,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 11:31:09,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 11:31:09,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2023-11-17 11:31:09,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24197247706422018 [2023-11-17 11:31:09,023 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 211 transitions. [2023-11-17 11:31:09,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 211 transitions. [2023-11-17 11:31:09,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:31:09,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 211 transitions. [2023-11-17 11:31:09,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 26.375) internal successors, (211), 8 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:09,025 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 11:31:09,025 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 11:31:09,025 INFO L175 Difference]: Start difference. First operand has 60 places, 31 transitions, 238 flow. Second operand 8 states and 211 transitions. [2023-11-17 11:31:09,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 38 transitions, 330 flow [2023-11-17 11:31:09,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 38 transitions, 310 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-17 11:31:09,027 INFO L231 Difference]: Finished difference. Result has 60 places, 26 transitions, 178 flow [2023-11-17 11:31:09,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=178, PETRI_PLACES=60, PETRI_TRANSITIONS=26} [2023-11-17 11:31:09,028 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 31 predicate places. [2023-11-17 11:31:09,028 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 26 transitions, 178 flow [2023-11-17 11:31:09,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:09,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:31:09,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:31:09,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-17 11:31:09,028 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 11:31:09,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:31:09,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1343255943, now seen corresponding path program 6 times [2023-11-17 11:31:09,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:31:09,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129894726] [2023-11-17 11:31:09,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:31:09,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:31:09,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:31:09,409 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 11:31:09,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:31:09,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129894726] [2023-11-17 11:31:09,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129894726] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:31:09,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:31:09,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 11:31:09,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766880169] [2023-11-17 11:31:09,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:31:09,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:31:09,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:31:09,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:31:09,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:31:09,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:31:09,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 26 transitions, 178 flow. Second operand has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:09,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:31:09,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:31:09,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:31:09,556 INFO L124 PetriNetUnfolderBase]: 25/89 cut-off events. [2023-11-17 11:31:09,557 INFO L125 PetriNetUnfolderBase]: For 204/204 co-relation queries the response was YES. [2023-11-17 11:31:09,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 89 events. 25/89 cut-off events. For 204/204 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 249 event pairs, 10 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 343. Up to 50 conditions per place. [2023-11-17 11:31:09,558 INFO L140 encePairwiseOnDemand]: 103/109 looper letters, 25 selfloop transitions, 11 changer transitions 2/38 dead transitions. [2023-11-17 11:31:09,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 38 transitions, 302 flow [2023-11-17 11:31:09,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:31:09,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:31:09,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 165 transitions. [2023-11-17 11:31:09,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25229357798165136 [2023-11-17 11:31:09,559 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 165 transitions. [2023-11-17 11:31:09,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 165 transitions. [2023-11-17 11:31:09,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:31:09,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 165 transitions. [2023-11-17 11:31:09,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:09,567 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 11:31:09,567 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 11:31:09,568 INFO L175 Difference]: Start difference. First operand has 60 places, 26 transitions, 178 flow. Second operand 6 states and 165 transitions. [2023-11-17 11:31:09,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 38 transitions, 302 flow [2023-11-17 11:31:09,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 38 transitions, 278 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-11-17 11:31:09,570 INFO L231 Difference]: Finished difference. Result has 51 places, 27 transitions, 184 flow [2023-11-17 11:31:09,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=184, PETRI_PLACES=51, PETRI_TRANSITIONS=27} [2023-11-17 11:31:09,570 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2023-11-17 11:31:09,570 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 27 transitions, 184 flow [2023-11-17 11:31:09,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:09,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:31:09,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:31:09,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-17 11:31:09,571 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 11:31:09,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:31:09,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1343255962, now seen corresponding path program 12 times [2023-11-17 11:31:09,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:31:09,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836732085] [2023-11-17 11:31:09,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:31:09,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:31:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:31:10,363 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 11:31:10,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:31:10,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836732085] [2023-11-17 11:31:10,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836732085] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:31:10,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:31:10,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 11:31:10,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296834843] [2023-11-17 11:31:10,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:31:10,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 11:31:10,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:31:10,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 11:31:10,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-17 11:31:10,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:31:10,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 27 transitions, 184 flow. Second operand has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:10,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:31:10,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:31:10,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:31:10,613 INFO L124 PetriNetUnfolderBase]: 23/85 cut-off events. [2023-11-17 11:31:10,613 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2023-11-17 11:31:10,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 85 events. 23/85 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 231 event pairs, 13 based on Foata normal form. 1/85 useless extension candidates. Maximal degree in co-relation 320. Up to 56 conditions per place. [2023-11-17 11:31:10,614 INFO L140 encePairwiseOnDemand]: 102/109 looper letters, 24 selfloop transitions, 6 changer transitions 6/36 dead transitions. [2023-11-17 11:31:10,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 36 transitions, 278 flow [2023-11-17 11:31:10,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 11:31:10,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 11:31:10,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2023-11-17 11:31:10,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24197247706422018 [2023-11-17 11:31:10,615 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 211 transitions. [2023-11-17 11:31:10,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 211 transitions. [2023-11-17 11:31:10,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:31:10,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 211 transitions. [2023-11-17 11:31:10,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 26.375) internal successors, (211), 8 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:10,617 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 11:31:10,617 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 11:31:10,617 INFO L175 Difference]: Start difference. First operand has 51 places, 27 transitions, 184 flow. Second operand 8 states and 211 transitions. [2023-11-17 11:31:10,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 36 transitions, 278 flow [2023-11-17 11:31:10,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 36 transitions, 266 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-17 11:31:10,619 INFO L231 Difference]: Finished difference. Result has 55 places, 24 transitions, 159 flow [2023-11-17 11:31:10,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=159, PETRI_PLACES=55, PETRI_TRANSITIONS=24} [2023-11-17 11:31:10,620 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 26 predicate places. [2023-11-17 11:31:10,620 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 24 transitions, 159 flow [2023-11-17 11:31:10,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:10,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:31:10,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:31:10,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-17 11:31:10,620 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 11:31:10,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:31:10,621 INFO L85 PathProgramCache]: Analyzing trace with hash -720909994, now seen corresponding path program 13 times [2023-11-17 11:31:10,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:31:10,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365030714] [2023-11-17 11:31:10,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:31:10,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:31:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:31:11,462 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 11:31:11,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:31:11,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365030714] [2023-11-17 11:31:11,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365030714] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:31:11,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:31:11,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 11:31:11,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002891921] [2023-11-17 11:31:11,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:31:11,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 11:31:11,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:31:11,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 11:31:11,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-17 11:31:11,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:31:11,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 24 transitions, 159 flow. Second operand has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:11,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:31:11,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:31:11,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:31:11,729 INFO L124 PetriNetUnfolderBase]: 23/78 cut-off events. [2023-11-17 11:31:11,729 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES. [2023-11-17 11:31:11,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 78 events. 23/78 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 194 event pairs, 5 based on Foata normal form. 1/78 useless extension candidates. Maximal degree in co-relation 302. Up to 24 conditions per place. [2023-11-17 11:31:11,730 INFO L140 encePairwiseOnDemand]: 102/109 looper letters, 16 selfloop transitions, 2 changer transitions 19/37 dead transitions. [2023-11-17 11:31:11,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 37 transitions, 267 flow [2023-11-17 11:31:11,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 11:31:11,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 11:31:11,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2023-11-17 11:31:11,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24541284403669725 [2023-11-17 11:31:11,731 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 214 transitions. [2023-11-17 11:31:11,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 214 transitions. [2023-11-17 11:31:11,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:31:11,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 214 transitions. [2023-11-17 11:31:11,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:11,733 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 11:31:11,733 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 11:31:11,733 INFO L175 Difference]: Start difference. First operand has 55 places, 24 transitions, 159 flow. Second operand 8 states and 214 transitions. [2023-11-17 11:31:11,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 37 transitions, 267 flow [2023-11-17 11:31:11,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 37 transitions, 244 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-11-17 11:31:11,735 INFO L231 Difference]: Finished difference. Result has 51 places, 17 transitions, 88 flow [2023-11-17 11:31:11,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=44, 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=8, PETRI_FLOW=88, PETRI_PLACES=51, PETRI_TRANSITIONS=17} [2023-11-17 11:31:11,735 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2023-11-17 11:31:11,736 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 17 transitions, 88 flow [2023-11-17 11:31:11,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:11,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:31:11,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:31:11,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-17 11:31:11,736 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-17 11:31:11,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:31:11,736 INFO L85 PathProgramCache]: Analyzing trace with hash 8612063, now seen corresponding path program 7 times [2023-11-17 11:31:11,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:31:11,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948211630] [2023-11-17 11:31:11,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:31:11,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:31:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:31:12,102 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 11:31:12,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:31:12,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948211630] [2023-11-17 11:31:12,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948211630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:31:12,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:31:12,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 11:31:12,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259413723] [2023-11-17 11:31:12,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:31:12,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:31:12,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:31:12,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:31:12,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:31:12,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:31:12,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 17 transitions, 88 flow. Second operand has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:12,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:31:12,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:31:12,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:31:12,207 INFO L124 PetriNetUnfolderBase]: 7/30 cut-off events. [2023-11-17 11:31:12,207 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2023-11-17 11:31:12,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 30 events. 7/30 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs, 3 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 112. Up to 14 conditions per place. [2023-11-17 11:31:12,207 INFO L140 encePairwiseOnDemand]: 103/109 looper letters, 14 selfloop transitions, 5 changer transitions 0/19 dead transitions. [2023-11-17 11:31:12,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 19 transitions, 130 flow [2023-11-17 11:31:12,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:31:12,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:31:12,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2023-11-17 11:31:12,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2324159021406728 [2023-11-17 11:31:12,209 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 152 transitions. [2023-11-17 11:31:12,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 152 transitions. [2023-11-17 11:31:12,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:31:12,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 152 transitions. [2023-11-17 11:31:12,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:12,211 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 11:31:12,211 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 11:31:12,211 INFO L175 Difference]: Start difference. First operand has 51 places, 17 transitions, 88 flow. Second operand 6 states and 152 transitions. [2023-11-17 11:31:12,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 19 transitions, 130 flow [2023-11-17 11:31:12,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 19 transitions, 92 flow, removed 5 selfloop flow, removed 14 redundant places. [2023-11-17 11:31:12,212 INFO L231 Difference]: Finished difference. Result has 31 places, 16 transitions, 56 flow [2023-11-17 11:31:12,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=56, PETRI_PLACES=31, PETRI_TRANSITIONS=16} [2023-11-17 11:31:12,212 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2023-11-17 11:31:12,212 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 16 transitions, 56 flow [2023-11-17 11:31:12,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:12,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:31:12,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:31:12,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-17 11:31:12,213 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 11:31:12,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:31:12,213 INFO L85 PathProgramCache]: Analyzing trace with hash 8612082, now seen corresponding path program 14 times [2023-11-17 11:31:12,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:31:12,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927728359] [2023-11-17 11:31:12,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:31:12,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:31:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:31:12,987 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 11:31:12,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:31:12,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927728359] [2023-11-17 11:31:12,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927728359] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:31:12,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:31:12,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 11:31:12,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173964471] [2023-11-17 11:31:12,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:31:12,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 11:31:12,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:31:12,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 11:31:12,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-17 11:31:12,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 109 [2023-11-17 11:31:12,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 16 transitions, 56 flow. Second operand has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:12,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:31:12,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 109 [2023-11-17 11:31:12,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:31:13,142 INFO L124 PetriNetUnfolderBase]: 7/29 cut-off events. [2023-11-17 11:31:13,142 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-17 11:31:13,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 29 events. 7/29 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 0 based on Foata normal form. 1/30 useless extension candidates. Maximal degree in co-relation 83. Up to 7 conditions per place. [2023-11-17 11:31:13,143 INFO L140 encePairwiseOnDemand]: 102/109 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-11-17 11:31:13,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 20 transitions, 105 flow [2023-11-17 11:31:13,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 11:31:13,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 11:31:13,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2023-11-17 11:31:13,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.22591743119266056 [2023-11-17 11:31:13,144 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 197 transitions. [2023-11-17 11:31:13,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 197 transitions. [2023-11-17 11:31:13,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:31:13,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 197 transitions. [2023-11-17 11:31:13,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:13,146 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 11:31:13,146 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 11:31:13,146 INFO L175 Difference]: Start difference. First operand has 31 places, 16 transitions, 56 flow. Second operand 8 states and 197 transitions. [2023-11-17 11:31:13,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 20 transitions, 105 flow [2023-11-17 11:31:13,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 20 transitions, 94 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-17 11:31:13,147 INFO L231 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2023-11-17 11:31:13,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=32, PETRI_TRANSITIONS=0} [2023-11-17 11:31:13,147 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2023-11-17 11:31:13,147 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 0 transitions, 0 flow [2023-11-17 11:31:13,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:31:13,150 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2023-11-17 11:31:13,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2023-11-17 11:31:13,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2023-11-17 11:31:13,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2023-11-17 11:31:13,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2023-11-17 11:31:13,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2023-11-17 11:31:13,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-11-17 11:31:13,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-11-17 11:31:13,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-17 11:31:13,152 INFO L445 BasicCegarLoop]: Path program histogram: [14, 7, 1, 1, 1, 1] [2023-11-17 11:31:13,155 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:31:13,155 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:31:13,158 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:31:13 BasicIcfg [2023-11-17 11:31:13,158 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:31:13,158 INFO L158 Benchmark]: Toolchain (without parser) took 42835.05ms. Allocated memory was 264.2MB in the beginning and 692.1MB in the end (delta: 427.8MB). Free memory was 212.8MB in the beginning and 280.4MB in the end (delta: -67.6MB). Peak memory consumption was 361.1MB. Max. memory is 8.0GB. [2023-11-17 11:31:13,158 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 189.8MB. Free memory is still 143.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:31:13,159 INFO L158 Benchmark]: CACSL2BoogieTranslator took 989.68ms. Allocated memory is still 264.2MB. Free memory was 212.8MB in the beginning and 221.4MB in the end (delta: -8.6MB). Peak memory consumption was 56.6MB. Max. memory is 8.0GB. [2023-11-17 11:31:13,159 INFO L158 Benchmark]: Boogie Procedure Inliner took 118.07ms. Allocated memory is still 264.2MB. Free memory was 221.4MB in the beginning and 217.9MB in the end (delta: 3.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 11:31:13,159 INFO L158 Benchmark]: Boogie Preprocessor took 48.46ms. Allocated memory is still 264.2MB. Free memory was 217.9MB in the beginning and 214.7MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 11:31:13,159 INFO L158 Benchmark]: RCFGBuilder took 683.41ms. Allocated memory is still 264.2MB. Free memory was 214.7MB in the beginning and 170.7MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 8.0GB. [2023-11-17 11:31:13,160 INFO L158 Benchmark]: TraceAbstraction took 40989.44ms. Allocated memory was 264.2MB in the beginning and 692.1MB in the end (delta: 427.8MB). Free memory was 170.2MB in the beginning and 280.4MB in the end (delta: -110.3MB). Peak memory consumption was 319.1MB. Max. memory is 8.0GB. [2023-11-17 11:31:13,161 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 189.8MB. Free memory is still 143.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 989.68ms. Allocated memory is still 264.2MB. Free memory was 212.8MB in the beginning and 221.4MB in the end (delta: -8.6MB). Peak memory consumption was 56.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 118.07ms. Allocated memory is still 264.2MB. Free memory was 221.4MB in the beginning and 217.9MB in the end (delta: 3.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 48.46ms. Allocated memory is still 264.2MB. Free memory was 217.9MB in the beginning and 214.7MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 683.41ms. Allocated memory is still 264.2MB. Free memory was 214.7MB in the beginning and 170.7MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 8.0GB. * TraceAbstraction took 40989.44ms. Allocated memory was 264.2MB in the beginning and 692.1MB in the end (delta: 427.8MB). Free memory was 170.2MB in the beginning and 280.4MB in the end (delta: -110.3MB). Peak memory consumption was 319.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 18.6s, 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: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 24, unknown conditional: 0, unknown unconditional: 24] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 220, independent: 202, independent conditional: 0, independent unconditional: 202, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 7, unknown conditional: 0, unknown unconditional: 7] , 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: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 7, unknown conditional: 0, unknown unconditional: 7] , SemanticIndependenceRelation.Query Time [ms]: [ total: 11137, independent: 42, independent conditional: 0, independent unconditional: 42, dependent: 602, dependent conditional: 0, dependent unconditional: 602, unknown: 10492, unknown conditional: 0, unknown unconditional: 10492] ], Cache Queries: [ total: 464, independent: 200, independent conditional: 0, independent unconditional: 200, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 237, unknown conditional: 0, unknown unconditional: 237] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 42, Positive conditional cache size: 0, Positive unconditional cache size: 42, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 5, Unknown conditional cache size: 0, Unknown unconditional cache size: 5 - 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: 40.9s, OverallIterations: 25, TraceHistogramMax: 1, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 5.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 18.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 392 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 392 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 139 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3737 IncrementalHoareTripleChecker+Invalid, 3876 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 139 mSolverCounterUnsat, 0 mSDtfsCounter, 3737 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 237 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=535occurred in iteration=15, InterpolantAutomatonStates: 157, 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, 14.9s InterpolantComputationTime, 352 NumberOfCodeBlocks, 352 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 327 ConstructedInterpolants, 0 QuantifiedInterpolants, 5689 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 25 InterpolantComputations, 25 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 11:31:13,216 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...