/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:32:47,923 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:32:47,977 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 15:32:48,000 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:32:48,001 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:32:48,001 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:32:48,002 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:32:48,002 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:32:48,002 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:32:48,003 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:32:48,003 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:32:48,003 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:32:48,004 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:32:48,004 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:32:48,004 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:32:48,005 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:32:48,005 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:32:48,005 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:32:48,006 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:32:48,006 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:32:48,006 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:32:48,007 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:32:48,007 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:32:48,007 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:32:48,008 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:32:48,008 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:32:48,008 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:32:48,009 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:32:48,009 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:32:48,009 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:32:48,010 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:32:48,010 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:32:48,010 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:32:48,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:32:48,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:32:48,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:32:48,276 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:32:48,276 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:32:48,277 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i [2023-11-17 15:32:49,438 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:32:49,703 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:32:49,704 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i [2023-11-17 15:32:49,724 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dc530d93/b09986585b3b4aada35e145fb2f9ddb4/FLAG98048d9d1 [2023-11-17 15:32:49,743 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dc530d93/b09986585b3b4aada35e145fb2f9ddb4 [2023-11-17 15:32:49,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:32:49,746 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:32:49,750 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:32:49,751 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:32:49,755 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:32:49,756 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:32:49" (1/1) ... [2023-11-17 15:32:49,757 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@541c9c81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:32:49, skipping insertion in model container [2023-11-17 15:32:49,757 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:32:49" (1/1) ... [2023-11-17 15:32:49,807 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:32:49,978 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i[1103,1116] [2023-11-17 15:32:50,140 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:32:50,154 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:32:50,166 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i[1103,1116] [2023-11-17 15:32:50,203 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:32:50,233 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:32:50,234 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:32:50 WrapperNode [2023-11-17 15:32:50,234 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:32:50,235 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:32:50,235 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:32:50,235 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:32:50,239 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:32:50" (1/1) ... [2023-11-17 15:32:50,249 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:32:50" (1/1) ... [2023-11-17 15:32:50,266 INFO L138 Inliner]: procedures = 163, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 88 [2023-11-17 15:32:50,266 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:32:50,267 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:32:50,267 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:32:50,267 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:32:50,275 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:32:50" (1/1) ... [2023-11-17 15:32:50,276 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:32:50" (1/1) ... [2023-11-17 15:32:50,279 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:32:50" (1/1) ... [2023-11-17 15:32:50,279 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:32:50" (1/1) ... [2023-11-17 15:32:50,288 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:32:50" (1/1) ... [2023-11-17 15:32:50,290 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:32:50" (1/1) ... [2023-11-17 15:32:50,293 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:32:50" (1/1) ... [2023-11-17 15:32:50,294 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:32:50" (1/1) ... [2023-11-17 15:32:50,297 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:32:50,298 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:32:50,298 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:32:50,298 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:32:50,298 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:32:50" (1/1) ... [2023-11-17 15:32:50,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:32:50,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:32:50,335 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 15:32:50,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 15:32:50,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 15:32:50,376 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-17 15:32:50,376 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-17 15:32:50,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:32:50,376 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-17 15:32:50,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:32:50,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:32:50,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:32:50,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:32:50,378 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-17 15:32:50,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:32:50,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:32:50,379 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 15:32:50,531 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:32:50,533 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:32:50,788 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:32:50,842 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:32:50,842 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 15:32:50,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:32:50 BoogieIcfgContainer [2023-11-17 15:32:50,847 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:32:50,849 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:32:50,851 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:32:50,853 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:32:50,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:32:49" (1/3) ... [2023-11-17 15:32:50,854 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@700975d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:32:50, skipping insertion in model container [2023-11-17 15:32:50,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:32:50" (2/3) ... [2023-11-17 15:32:50,855 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@700975d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:32:50, skipping insertion in model container [2023-11-17 15:32:50,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:32:50" (3/3) ... [2023-11-17 15:32:50,856 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_29-multiple-protecting2-vesal_true.i [2023-11-17 15:32:50,872 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:32:50,873 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-17 15:32:50,873 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:32:50,930 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-17 15:32:50,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 114 transitions, 235 flow [2023-11-17 15:32:51,033 INFO L124 PetriNetUnfolderBase]: 3/113 cut-off events. [2023-11-17 15:32:51,034 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 15:32:51,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 113 events. 3/113 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2023-11-17 15:32:51,039 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 114 transitions, 235 flow [2023-11-17 15:32:51,043 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 93 transitions, 189 flow [2023-11-17 15:32:51,047 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:32:51,062 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 93 transitions, 189 flow [2023-11-17 15:32:51,066 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 93 transitions, 189 flow [2023-11-17 15:32:51,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 93 transitions, 189 flow [2023-11-17 15:32:51,085 INFO L124 PetriNetUnfolderBase]: 2/93 cut-off events. [2023-11-17 15:32:51,085 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:32:51,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 93 events. 2/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 70 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-11-17 15:32:51,087 INFO L119 LiptonReduction]: Number of co-enabled transitions 1554 [2023-11-17 15:32:54,146 INFO L134 LiptonReduction]: Checked pairs total: 3003 [2023-11-17 15:32:54,147 INFO L136 LiptonReduction]: Total number of compositions: 88 [2023-11-17 15:32:54,159 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:32:54,164 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;@2c542123, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:32:54,164 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 15:32:54,167 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:32:54,168 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-11-17 15:32:54,168 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:32:54,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:32:54,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-17 15:32:54,169 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-17 15:32:54,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:32:54,173 INFO L85 PathProgramCache]: Analyzing trace with hash 13459365, now seen corresponding path program 1 times [2023-11-17 15:32:54,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:32:54,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315740518] [2023-11-17 15:32:54,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:32:54,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:32:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:32:54,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:32:54,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:32:54,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315740518] [2023-11-17 15:32:54,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315740518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:32:54,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:32:54,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:32:54,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538473754] [2023-11-17 15:32:54,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:32:54,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-17 15:32:54,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:32:54,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-17 15:32:54,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-17 15:32:54,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 202 [2023-11-17 15:32:54,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 21 transitions, 45 flow. Second operand has 2 states, 2 states have (on average 94.0) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:54,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:32:54,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 202 [2023-11-17 15:32:54,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:32:54,496 INFO L124 PetriNetUnfolderBase]: 80/180 cut-off events. [2023-11-17 15:32:54,496 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:32:54,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 180 events. 80/180 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 575 event pairs, 80 based on Foata normal form. 0/162 useless extension candidates. Maximal degree in co-relation 356. Up to 181 conditions per place. [2023-11-17 15:32:54,499 INFO L140 encePairwiseOnDemand]: 201/202 looper letters, 20 selfloop transitions, 0 changer transitions 0/20 dead transitions. [2023-11-17 15:32:54,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 20 transitions, 83 flow [2023-11-17 15:32:54,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 15:32:54,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-17 15:32:54,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 205 transitions. [2023-11-17 15:32:54,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5074257425742574 [2023-11-17 15:32:54,519 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 205 transitions. [2023-11-17 15:32:54,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 205 transitions. [2023-11-17 15:32:54,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:32:54,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 205 transitions. [2023-11-17 15:32:54,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 102.5) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:54,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:54,535 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:54,536 INFO L175 Difference]: Start difference. First operand has 24 places, 21 transitions, 45 flow. Second operand 2 states and 205 transitions. [2023-11-17 15:32:54,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 20 transitions, 83 flow [2023-11-17 15:32:54,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 20 transitions, 82 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:32:54,541 INFO L231 Difference]: Finished difference. Result has 24 places, 20 transitions, 42 flow [2023-11-17 15:32:54,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=42, PETRI_PLACES=24, PETRI_TRANSITIONS=20} [2023-11-17 15:32:54,546 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 0 predicate places. [2023-11-17 15:32:54,546 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 20 transitions, 42 flow [2023-11-17 15:32:54,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 94.0) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:54,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:32:54,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-17 15:32:54,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:32:54,547 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-17 15:32:54,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:32:54,555 INFO L85 PathProgramCache]: Analyzing trace with hash 417211569, now seen corresponding path program 1 times [2023-11-17 15:32:54,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:32:54,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178561035] [2023-11-17 15:32:54,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:32:54,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:32:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:32:54,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:32:54,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:32:54,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178561035] [2023-11-17 15:32:54,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178561035] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:32:54,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:32:54,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 15:32:54,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635865804] [2023-11-17 15:32:54,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:32:54,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:32:54,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:32:54,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:32:54,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:32:54,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 202 [2023-11-17 15:32:54,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:54,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:32:54,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 202 [2023-11-17 15:32:54,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:32:54,834 INFO L124 PetriNetUnfolderBase]: 74/168 cut-off events. [2023-11-17 15:32:54,834 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:32:54,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 341 conditions, 168 events. 74/168 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 527 event pairs, 47 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 338. Up to 106 conditions per place. [2023-11-17 15:32:54,837 INFO L140 encePairwiseOnDemand]: 199/202 looper letters, 27 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-11-17 15:32:54,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 29 transitions, 118 flow [2023-11-17 15:32:54,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:32:54,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:32:54,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2023-11-17 15:32:54,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46534653465346537 [2023-11-17 15:32:54,843 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2023-11-17 15:32:54,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2023-11-17 15:32:54,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:32:54,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2023-11-17 15:32:54,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:54,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:54,849 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:54,849 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 42 flow. Second operand 3 states and 282 transitions. [2023-11-17 15:32:54,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 29 transitions, 118 flow [2023-11-17 15:32:54,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 29 transitions, 118 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 15:32:54,851 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 50 flow [2023-11-17 15:32:54,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2023-11-17 15:32:54,852 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 3 predicate places. [2023-11-17 15:32:54,852 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 50 flow [2023-11-17 15:32:54,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:54,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:32:54,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:32:54,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:32:54,853 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-17 15:32:54,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:32:54,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1508370691, now seen corresponding path program 1 times [2023-11-17 15:32:54,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:32:54,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236857125] [2023-11-17 15:32:54,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:32:54,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:32:54,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:32:54,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:32:54,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:32:54,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236857125] [2023-11-17 15:32:54,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236857125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:32:54,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:32:54,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:32:54,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258156329] [2023-11-17 15:32:54,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:32:54,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:32:54,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:32:54,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:32:54,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:32:54,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-11-17 15:32:54,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 50 flow. Second operand has 4 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:54,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:32:54,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-11-17 15:32:54,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:32:55,068 INFO L124 PetriNetUnfolderBase]: 76/173 cut-off events. [2023-11-17 15:32:55,068 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 15:32:55,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 173 events. 76/173 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 570 event pairs, 24 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 374. Up to 119 conditions per place. [2023-11-17 15:32:55,073 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 32 selfloop transitions, 7 changer transitions 0/39 dead transitions. [2023-11-17 15:32:55,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 39 transitions, 169 flow [2023-11-17 15:32:55,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:32:55,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:32:55,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 431 transitions. [2023-11-17 15:32:55,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4267326732673267 [2023-11-17 15:32:55,076 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 431 transitions. [2023-11-17 15:32:55,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 431 transitions. [2023-11-17 15:32:55,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:32:55,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 431 transitions. [2023-11-17 15:32:55,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,081 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,081 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 50 flow. Second operand 5 states and 431 transitions. [2023-11-17 15:32:55,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 39 transitions, 169 flow [2023-11-17 15:32:55,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 39 transitions, 163 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 15:32:55,106 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 86 flow [2023-11-17 15:32:55,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=86, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2023-11-17 15:32:55,108 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 8 predicate places. [2023-11-17 15:32:55,108 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 86 flow [2023-11-17 15:32:55,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:32:55,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:32:55,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 15:32:55,109 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-17 15:32:55,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:32:55,110 INFO L85 PathProgramCache]: Analyzing trace with hash -469576806, now seen corresponding path program 1 times [2023-11-17 15:32:55,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:32:55,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312525452] [2023-11-17 15:32:55,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:32:55,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:32:55,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:32:55,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:32:55,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:32:55,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312525452] [2023-11-17 15:32:55,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312525452] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:32:55,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:32:55,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:32:55,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950186775] [2023-11-17 15:32:55,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:32:55,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:32:55,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:32:55,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:32:55,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:32:55,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 202 [2023-11-17 15:32:55,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:32:55,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 202 [2023-11-17 15:32:55,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:32:55,283 INFO L124 PetriNetUnfolderBase]: 31/105 cut-off events. [2023-11-17 15:32:55,284 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-11-17 15:32:55,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 105 events. 31/105 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 311 event pairs, 9 based on Foata normal form. 19/124 useless extension candidates. Maximal degree in co-relation 255. Up to 59 conditions per place. [2023-11-17 15:32:55,285 INFO L140 encePairwiseOnDemand]: 194/202 looper letters, 23 selfloop transitions, 9 changer transitions 0/32 dead transitions. [2023-11-17 15:32:55,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 32 transitions, 172 flow [2023-11-17 15:32:55,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:32:55,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:32:55,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2023-11-17 15:32:55,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48184818481848185 [2023-11-17 15:32:55,287 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 292 transitions. [2023-11-17 15:32:55,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 292 transitions. [2023-11-17 15:32:55,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:32:55,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 292 transitions. [2023-11-17 15:32:55,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,290 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,290 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 86 flow. Second operand 3 states and 292 transitions. [2023-11-17 15:32:55,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 32 transitions, 172 flow [2023-11-17 15:32:55,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 32 transitions, 168 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-17 15:32:55,293 INFO L231 Difference]: Finished difference. Result has 33 places, 24 transitions, 110 flow [2023-11-17 15:32:55,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2023-11-17 15:32:55,295 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 9 predicate places. [2023-11-17 15:32:55,295 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 110 flow [2023-11-17 15:32:55,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:32:55,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:32:55,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 15:32:55,296 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-17 15:32:55,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:32:55,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1924556195, now seen corresponding path program 1 times [2023-11-17 15:32:55,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:32:55,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497982916] [2023-11-17 15:32:55,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:32:55,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:32:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:32:55,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:32:55,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:32:55,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497982916] [2023-11-17 15:32:55,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497982916] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:32:55,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:32:55,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 15:32:55,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454545550] [2023-11-17 15:32:55,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:32:55,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:32:55,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:32:55,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:32:55,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:32:55,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 202 [2023-11-17 15:32:55,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:32:55,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 202 [2023-11-17 15:32:55,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:32:55,447 INFO L124 PetriNetUnfolderBase]: 30/102 cut-off events. [2023-11-17 15:32:55,448 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-11-17 15:32:55,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 102 events. 30/102 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 293 event pairs, 14 based on Foata normal form. 2/104 useless extension candidates. Maximal degree in co-relation 308. Up to 73 conditions per place. [2023-11-17 15:32:55,449 INFO L140 encePairwiseOnDemand]: 199/202 looper letters, 26 selfloop transitions, 2 changer transitions 1/29 dead transitions. [2023-11-17 15:32:55,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 184 flow [2023-11-17 15:32:55,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:32:55,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:32:55,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2023-11-17 15:32:55,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46204620462046203 [2023-11-17 15:32:55,458 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2023-11-17 15:32:55,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2023-11-17 15:32:55,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:32:55,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2023-11-17 15:32:55,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,461 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,462 INFO L175 Difference]: Start difference. First operand has 33 places, 24 transitions, 110 flow. Second operand 3 states and 280 transitions. [2023-11-17 15:32:55,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 184 flow [2023-11-17 15:32:55,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 29 transitions, 173 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:32:55,465 INFO L231 Difference]: Finished difference. Result has 35 places, 24 transitions, 109 flow [2023-11-17 15:32:55,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=35, PETRI_TRANSITIONS=24} [2023-11-17 15:32:55,468 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 11 predicate places. [2023-11-17 15:32:55,468 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 109 flow [2023-11-17 15:32:55,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:32:55,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:32:55,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 15:32:55,469 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-17 15:32:55,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:32:55,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1823576606, now seen corresponding path program 1 times [2023-11-17 15:32:55,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:32:55,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451552722] [2023-11-17 15:32:55,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:32:55,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:32:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:32:55,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:32:55,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:32:55,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451552722] [2023-11-17 15:32:55,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451552722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:32:55,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:32:55,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:32:55,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994924840] [2023-11-17 15:32:55,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:32:55,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:32:55,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:32:55,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:32:55,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:32:55,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-11-17 15:32:55,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 109 flow. Second operand has 5 states, 5 states have (on average 80.2) internal successors, (401), 5 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:32:55,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-11-17 15:32:55,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:32:55,665 INFO L124 PetriNetUnfolderBase]: 29/97 cut-off events. [2023-11-17 15:32:55,666 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-17 15:32:55,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 97 events. 29/97 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 265 event pairs, 10 based on Foata normal form. 4/101 useless extension candidates. Maximal degree in co-relation 286. Up to 62 conditions per place. [2023-11-17 15:32:55,667 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 22 selfloop transitions, 7 changer transitions 1/30 dead transitions. [2023-11-17 15:32:55,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 30 transitions, 185 flow [2023-11-17 15:32:55,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:32:55,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:32:55,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 497 transitions. [2023-11-17 15:32:55,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41006600660066006 [2023-11-17 15:32:55,669 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 497 transitions. [2023-11-17 15:32:55,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 497 transitions. [2023-11-17 15:32:55,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:32:55,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 497 transitions. [2023-11-17 15:32:55,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 202.0) internal successors, (1414), 7 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,673 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 202.0) internal successors, (1414), 7 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,673 INFO L175 Difference]: Start difference. First operand has 35 places, 24 transitions, 109 flow. Second operand 6 states and 497 transitions. [2023-11-17 15:32:55,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 30 transitions, 185 flow [2023-11-17 15:32:55,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 30 transitions, 179 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 15:32:55,675 INFO L231 Difference]: Finished difference. Result has 37 places, 24 transitions, 121 flow [2023-11-17 15:32:55,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=121, PETRI_PLACES=37, PETRI_TRANSITIONS=24} [2023-11-17 15:32:55,676 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 13 predicate places. [2023-11-17 15:32:55,676 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 24 transitions, 121 flow [2023-11-17 15:32:55,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.2) internal successors, (401), 5 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:32:55,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:32:55,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 15:32:55,677 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-17 15:32:55,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:32:55,677 INFO L85 PathProgramCache]: Analyzing trace with hash -667503489, now seen corresponding path program 1 times [2023-11-17 15:32:55,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:32:55,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899133639] [2023-11-17 15:32:55,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:32:55,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:32:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:32:55,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:32:55,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:32:55,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899133639] [2023-11-17 15:32:55,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899133639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:32:55,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:32:55,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:32:55,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049982489] [2023-11-17 15:32:55,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:32:55,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:32:55,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:32:55,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:32:55,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:32:55,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 202 [2023-11-17 15:32:55,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 24 transitions, 121 flow. Second operand has 5 states, 5 states have (on average 86.4) internal successors, (432), 5 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:32:55,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 202 [2023-11-17 15:32:55,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:32:55,811 INFO L124 PetriNetUnfolderBase]: 28/93 cut-off events. [2023-11-17 15:32:55,812 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-11-17 15:32:55,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 93 events. 28/93 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 243 event pairs, 11 based on Foata normal form. 3/96 useless extension candidates. Maximal degree in co-relation 291. Up to 35 conditions per place. [2023-11-17 15:32:55,812 INFO L140 encePairwiseOnDemand]: 197/202 looper letters, 31 selfloop transitions, 4 changer transitions 1/36 dead transitions. [2023-11-17 15:32:55,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 36 transitions, 236 flow [2023-11-17 15:32:55,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:32:55,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:32:55,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 455 transitions. [2023-11-17 15:32:55,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4504950495049505 [2023-11-17 15:32:55,814 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 455 transitions. [2023-11-17 15:32:55,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 455 transitions. [2023-11-17 15:32:55,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:32:55,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 455 transitions. [2023-11-17 15:32:55,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,819 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,819 INFO L175 Difference]: Start difference. First operand has 37 places, 24 transitions, 121 flow. Second operand 5 states and 455 transitions. [2023-11-17 15:32:55,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 36 transitions, 236 flow [2023-11-17 15:32:55,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 208 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-11-17 15:32:55,822 INFO L231 Difference]: Finished difference. Result has 35 places, 24 transitions, 108 flow [2023-11-17 15:32:55,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=108, PETRI_PLACES=35, PETRI_TRANSITIONS=24} [2023-11-17 15:32:55,823 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 11 predicate places. [2023-11-17 15:32:55,823 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 108 flow [2023-11-17 15:32:55,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.4) internal successors, (432), 5 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:32:55,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:32:55,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 15:32:55,824 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-17 15:32:55,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:32:55,824 INFO L85 PathProgramCache]: Analyzing trace with hash -882387464, now seen corresponding path program 1 times [2023-11-17 15:32:55,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:32:55,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387541748] [2023-11-17 15:32:55,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:32:55,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:32:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:32:56,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:32:56,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:32:56,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387541748] [2023-11-17 15:32:56,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387541748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:32:56,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:32:56,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:32:56,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923529621] [2023-11-17 15:32:56,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:32:56,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:32:56,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:32:56,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:32:56,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:32:56,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 202 [2023-11-17 15:32:56,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:56,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:32:56,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 202 [2023-11-17 15:32:56,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:32:56,098 INFO L124 PetriNetUnfolderBase]: 18/69 cut-off events. [2023-11-17 15:32:56,098 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-11-17 15:32:56,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 69 events. 18/69 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 162 event pairs, 1 based on Foata normal form. 9/78 useless extension candidates. Maximal degree in co-relation 206. Up to 48 conditions per place. [2023-11-17 15:32:56,099 INFO L140 encePairwiseOnDemand]: 198/202 looper letters, 26 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2023-11-17 15:32:56,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 31 transitions, 196 flow [2023-11-17 15:32:56,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:32:56,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:32:56,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 345 transitions. [2023-11-17 15:32:56,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42698019801980197 [2023-11-17 15:32:56,100 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 345 transitions. [2023-11-17 15:32:56,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 345 transitions. [2023-11-17 15:32:56,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:32:56,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 345 transitions. [2023-11-17 15:32:56,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:56,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 202.0) internal successors, (1010), 5 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:56,103 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 202.0) internal successors, (1010), 5 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:56,104 INFO L175 Difference]: Start difference. First operand has 35 places, 24 transitions, 108 flow. Second operand 4 states and 345 transitions. [2023-11-17 15:32:56,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 31 transitions, 196 flow [2023-11-17 15:32:56,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 184 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-17 15:32:56,105 INFO L231 Difference]: Finished difference. Result has 33 places, 23 transitions, 100 flow [2023-11-17 15:32:56,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2023-11-17 15:32:56,106 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 9 predicate places. [2023-11-17 15:32:56,106 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 100 flow [2023-11-17 15:32:56,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:56,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:32:56,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:32:56,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 15:32:56,107 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-17 15:32:56,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:32:56,107 INFO L85 PathProgramCache]: Analyzing trace with hash 87759666, now seen corresponding path program 1 times [2023-11-17 15:32:56,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:32:56,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351466865] [2023-11-17 15:32:56,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:32:56,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:32:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:32:56,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:32:56,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:32:56,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351466865] [2023-11-17 15:32:56,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351466865] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:32:56,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:32:56,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:32:56,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643220170] [2023-11-17 15:32:56,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:32:56,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:32:56,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:32:56,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:32:56,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:32:56,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 202 [2023-11-17 15:32:56,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:56,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:32:56,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 202 [2023-11-17 15:32:56,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:32:56,292 INFO L124 PetriNetUnfolderBase]: 18/68 cut-off events. [2023-11-17 15:32:56,293 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-17 15:32:56,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 68 events. 18/68 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 154 event pairs, 11 based on Foata normal form. 1/69 useless extension candidates. Maximal degree in co-relation 209. Up to 52 conditions per place. [2023-11-17 15:32:56,293 INFO L140 encePairwiseOnDemand]: 198/202 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2023-11-17 15:32:56,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 27 transitions, 169 flow [2023-11-17 15:32:56,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:32:56,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:32:56,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 359 transitions. [2023-11-17 15:32:56,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4443069306930693 [2023-11-17 15:32:56,295 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 359 transitions. [2023-11-17 15:32:56,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 359 transitions. [2023-11-17 15:32:56,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:32:56,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 359 transitions. [2023-11-17 15:32:56,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:56,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 202.0) internal successors, (1010), 5 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:56,297 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 202.0) internal successors, (1010), 5 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:56,297 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 100 flow. Second operand 4 states and 359 transitions. [2023-11-17 15:32:56,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 27 transitions, 169 flow [2023-11-17 15:32:56,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 27 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 15:32:56,299 INFO L231 Difference]: Finished difference. Result has 33 places, 0 transitions, 0 flow [2023-11-17 15:32:56,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=30, 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=4, PETRI_FLOW=0, PETRI_PLACES=33, PETRI_TRANSITIONS=0} [2023-11-17 15:32:56,299 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 9 predicate places. [2023-11-17 15:32:56,299 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 0 transitions, 0 flow [2023-11-17 15:32:56,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:56,302 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 15:32:56,302 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-11-17 15:32:56,303 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-11-17 15:32:56,303 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 15:32:56,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 15:32:56,303 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:32:56,306 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 15:32:56,306 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 15:32:56,308 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:32:56 BasicIcfg [2023-11-17 15:32:56,309 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 15:32:56,309 INFO L158 Benchmark]: Toolchain (without parser) took 6562.92ms. Allocated memory was 179.3MB in the beginning and 216.0MB in the end (delta: 36.7MB). Free memory was 135.8MB in the beginning and 111.7MB in the end (delta: 24.1MB). Peak memory consumption was 62.4MB. Max. memory is 8.0GB. [2023-11-17 15:32:56,309 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 179.3MB. Free memory is still 138.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:32:56,310 INFO L158 Benchmark]: CACSL2BoogieTranslator took 483.53ms. Allocated memory is still 179.3MB. Free memory was 135.3MB in the beginning and 115.9MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-11-17 15:32:56,310 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.69ms. Allocated memory is still 179.3MB. Free memory was 115.9MB in the beginning and 113.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:32:56,310 INFO L158 Benchmark]: Boogie Preprocessor took 30.00ms. Allocated memory is still 179.3MB. Free memory was 113.9MB in the beginning and 112.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:32:56,310 INFO L158 Benchmark]: RCFGBuilder took 549.26ms. Allocated memory is still 179.3MB. Free memory was 112.3MB in the beginning and 93.9MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-11-17 15:32:56,310 INFO L158 Benchmark]: TraceAbstraction took 5459.30ms. Allocated memory was 179.3MB in the beginning and 216.0MB in the end (delta: 36.7MB). Free memory was 93.4MB in the beginning and 111.7MB in the end (delta: -18.3MB). Peak memory consumption was 19.4MB. Max. memory is 8.0GB. [2023-11-17 15:32:56,312 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 179.3MB. Free memory is still 138.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 483.53ms. Allocated memory is still 179.3MB. Free memory was 135.3MB in the beginning and 115.9MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.69ms. Allocated memory is still 179.3MB. Free memory was 115.9MB in the beginning and 113.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.00ms. Allocated memory is still 179.3MB. Free memory was 113.9MB in the beginning and 112.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 549.26ms. Allocated memory is still 179.3MB. Free memory was 112.3MB in the beginning and 93.9MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 5459.30ms. Allocated memory was 179.3MB in the beginning and 216.0MB in the end (delta: 36.7MB). Free memory was 93.4MB in the beginning and 111.7MB in the end (delta: -18.3MB). Peak memory consumption was 19.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 95 PlacesBefore, 24 PlacesAfterwards, 93 TransitionsBefore, 21 TransitionsAfterwards, 1554 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 88 TotalNumberOfCompositions, 3003 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1557, independent: 1399, independent conditional: 0, independent unconditional: 1399, dependent: 158, dependent conditional: 0, dependent unconditional: 158, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1064, independent: 1010, independent conditional: 0, independent unconditional: 1010, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1064, independent: 978, independent conditional: 0, independent unconditional: 978, dependent: 86, dependent conditional: 0, dependent unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 86, independent: 32, independent conditional: 0, independent unconditional: 32, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 168, independent: 40, independent conditional: 0, independent unconditional: 40, dependent: 128, dependent conditional: 0, dependent unconditional: 128, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1557, independent: 389, independent conditional: 0, independent unconditional: 389, dependent: 104, dependent conditional: 0, dependent unconditional: 104, unknown: 1064, unknown conditional: 0, unknown unconditional: 1064] , Statistics on independence cache: Total cache size (in pairs): 91, Positive cache size: 67, Positive conditional cache size: 0, Positive unconditional cache size: 67, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: 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: 19]: 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: 19]: 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 3 procedures, 135 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.3s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 111 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 111 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 387 IncrementalHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 0 mSDtfsCounter, 387 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred in iteration=6, InterpolantAutomatonStates: 35, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 326 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-17 15:32:56,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...