/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/36-apron_21-traces-cluster-based_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:41:37,626 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:41:37,664 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 15:41:37,681 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:41:37,681 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:41:37,681 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:41:37,682 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:41:37,682 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:41:37,682 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:41:37,683 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:41:37,683 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:41:37,683 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:41:37,683 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:41:37,683 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:41:37,684 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:41:37,684 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:41:37,684 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:41:37,684 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:41:37,684 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:41:37,685 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:41:37,685 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:41:37,685 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:41:37,685 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:41:37,686 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:41:37,686 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:41:37,686 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:41:37,686 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:41:37,686 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:41:37,686 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:41:37,687 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:41:37,687 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:41:37,687 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:41:37,687 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:41:37,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:41:37,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:41:37,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:41:37,831 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:41:37,831 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:41:37,832 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i [2023-11-17 15:41:38,787 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:41:38,977 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:41:38,978 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i [2023-11-17 15:41:38,998 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1ab62aa0/64b94ba7aa9d4327a77d81c27d9597a0/FLAGcc5768646 [2023-11-17 15:41:39,007 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1ab62aa0/64b94ba7aa9d4327a77d81c27d9597a0 [2023-11-17 15:41:39,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:41:39,011 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:41:39,011 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:41:39,012 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:41:39,014 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:41:39,015 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:41:39" (1/1) ... [2023-11-17 15:41:39,015 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@635ca07f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:39, skipping insertion in model container [2023-11-17 15:41:39,015 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:41:39" (1/1) ... [2023-11-17 15:41:39,045 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:41:39,132 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/36-apron_21-traces-cluster-based_true.i[1092,1105] [2023-11-17 15:41:39,243 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:41:39,253 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:41:39,264 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/36-apron_21-traces-cluster-based_true.i[1092,1105] [2023-11-17 15:41:39,291 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:41:39,319 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:41:39,320 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:39 WrapperNode [2023-11-17 15:41:39,320 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:41:39,321 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:41:39,321 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:41:39,321 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:41:39,326 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:39" (1/1) ... [2023-11-17 15:41:39,347 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:39" (1/1) ... [2023-11-17 15:41:39,371 INFO L138 Inliner]: procedures = 166, calls = 53, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 149 [2023-11-17 15:41:39,371 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:41:39,372 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:41:39,372 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:41:39,372 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:41:39,378 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:39" (1/1) ... [2023-11-17 15:41:39,378 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:39" (1/1) ... [2023-11-17 15:41:39,391 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:39" (1/1) ... [2023-11-17 15:41:39,391 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:39" (1/1) ... [2023-11-17 15:41:39,395 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:39" (1/1) ... [2023-11-17 15:41:39,396 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:39" (1/1) ... [2023-11-17 15:41:39,397 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:39" (1/1) ... [2023-11-17 15:41:39,398 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:39" (1/1) ... [2023-11-17 15:41:39,400 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:41:39,411 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:41:39,411 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:41:39,412 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:41:39,412 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:39" (1/1) ... [2023-11-17 15:41:39,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:41:39,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:41:39,437 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 15:41:39,458 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 15:41:39,462 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-17 15:41:39,462 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-17 15:41:39,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:41:39,463 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-17 15:41:39,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:41:39,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:41:39,463 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-11-17 15:41:39,463 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-11-17 15:41:39,464 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-17 15:41:39,464 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-17 15:41:39,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:41:39,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:41:39,464 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-17 15:41:39,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:41:39,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:41:39,465 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 15:41:39,585 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:41:39,587 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:41:39,758 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:41:39,809 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:41:39,809 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 15:41:39,810 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:41:39 BoogieIcfgContainer [2023-11-17 15:41:39,810 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:41:39,812 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:41:39,812 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:41:39,814 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:41:39,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:41:39" (1/3) ... [2023-11-17 15:41:39,815 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bed229a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:41:39, skipping insertion in model container [2023-11-17 15:41:39,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:39" (2/3) ... [2023-11-17 15:41:39,815 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bed229a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:41:39, skipping insertion in model container [2023-11-17 15:41:39,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:41:39" (3/3) ... [2023-11-17 15:41:39,816 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_21-traces-cluster-based_true.i [2023-11-17 15:41:39,827 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:41:39,827 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-17 15:41:39,827 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:41:39,885 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 15:41:39,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 178 transitions, 368 flow [2023-11-17 15:41:40,007 INFO L124 PetriNetUnfolderBase]: 5/175 cut-off events. [2023-11-17 15:41:40,007 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:41:40,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 175 events. 5/175 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 306 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 140. Up to 2 conditions per place. [2023-11-17 15:41:40,013 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 178 transitions, 368 flow [2023-11-17 15:41:40,018 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 175 transitions, 359 flow [2023-11-17 15:41:40,020 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:41:40,029 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 180 places, 175 transitions, 359 flow [2023-11-17 15:41:40,031 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 180 places, 175 transitions, 359 flow [2023-11-17 15:41:40,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 175 transitions, 359 flow [2023-11-17 15:41:40,071 INFO L124 PetriNetUnfolderBase]: 5/175 cut-off events. [2023-11-17 15:41:40,071 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:41:40,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 175 events. 5/175 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 306 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 140. Up to 2 conditions per place. [2023-11-17 15:41:40,080 INFO L119 LiptonReduction]: Number of co-enabled transitions 12246 [2023-11-17 15:41:44,319 INFO L134 LiptonReduction]: Checked pairs total: 26897 [2023-11-17 15:41:44,319 INFO L136 LiptonReduction]: Total number of compositions: 179 [2023-11-17 15:41:44,341 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:41:44,347 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;@f16f75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:41:44,347 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-17 15:41:44,355 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:41:44,355 INFO L124 PetriNetUnfolderBase]: 1/21 cut-off events. [2023-11-17 15:41:44,355 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:41:44,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:41:44,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:41:44,356 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-17 15:41:44,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:41:44,359 INFO L85 PathProgramCache]: Analyzing trace with hash 171386284, now seen corresponding path program 1 times [2023-11-17 15:41:44,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:41:44,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164500811] [2023-11-17 15:41:44,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:41:44,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:41:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:41:44,664 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 15:41:44,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:41:44,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164500811] [2023-11-17 15:41:44,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164500811] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:41:44,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:41:44,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:41:44,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701424821] [2023-11-17 15:41:44,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:41:44,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:41:44,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:41:44,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:41:44,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:41:44,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 357 [2023-11-17 15:41:44,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 89 flow. Second operand has 5 states, 5 states have (on average 138.6) internal successors, (693), 5 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:44,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:41:44,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 357 [2023-11-17 15:41:44,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:41:46,051 INFO L124 PetriNetUnfolderBase]: 14509/20354 cut-off events. [2023-11-17 15:41:46,052 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-11-17 15:41:46,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40879 conditions, 20354 events. 14509/20354 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 113440 event pairs, 2799 based on Foata normal form. 0/17522 useless extension candidates. Maximal degree in co-relation 40868. Up to 10071 conditions per place. [2023-11-17 15:41:46,145 INFO L140 encePairwiseOnDemand]: 347/357 looper letters, 160 selfloop transitions, 10 changer transitions 0/170 dead transitions. [2023-11-17 15:41:46,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 170 transitions, 710 flow [2023-11-17 15:41:46,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 15:41:46,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 15:41:46,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1285 transitions. [2023-11-17 15:41:46,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44992997198879553 [2023-11-17 15:41:46,161 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1285 transitions. [2023-11-17 15:41:46,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1285 transitions. [2023-11-17 15:41:46,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:41:46,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1285 transitions. [2023-11-17 15:41:46,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 160.625) internal successors, (1285), 8 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:46,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 357.0) internal successors, (3213), 9 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:46,178 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 357.0) internal successors, (3213), 9 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:46,180 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 89 flow. Second operand 8 states and 1285 transitions. [2023-11-17 15:41:46,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 170 transitions, 710 flow [2023-11-17 15:41:46,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 170 transitions, 700 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 15:41:46,186 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 149 flow [2023-11-17 15:41:46,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=149, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2023-11-17 15:41:46,190 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 10 predicate places. [2023-11-17 15:41:46,190 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 149 flow [2023-11-17 15:41:46,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 138.6) internal successors, (693), 5 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:46,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:41:46,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:41:46,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:41:46,191 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-17 15:41:46,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:41:46,191 INFO L85 PathProgramCache]: Analyzing trace with hash 658561493, now seen corresponding path program 1 times [2023-11-17 15:41:46,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:41:46,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560313727] [2023-11-17 15:41:46,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:41:46,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:41:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:41:46,303 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 15:41:46,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:41:46,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560313727] [2023-11-17 15:41:46,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560313727] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:41:46,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:41:46,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:41:46,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133218543] [2023-11-17 15:41:46,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:41:46,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:41:46,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:41:46,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:41:46,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:41:46,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 357 [2023-11-17 15:41:46,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 149 flow. Second operand has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:46,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:41:46,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 357 [2023-11-17 15:41:46,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:41:47,932 INFO L124 PetriNetUnfolderBase]: 19537/27334 cut-off events. [2023-11-17 15:41:47,932 INFO L125 PetriNetUnfolderBase]: For 13474/13474 co-relation queries the response was YES. [2023-11-17 15:41:47,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66198 conditions, 27334 events. 19537/27334 cut-off events. For 13474/13474 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 150990 event pairs, 5921 based on Foata normal form. 0/24624 useless extension candidates. Maximal degree in co-relation 66182. Up to 15117 conditions per place. [2023-11-17 15:41:48,052 INFO L140 encePairwiseOnDemand]: 350/357 looper letters, 141 selfloop transitions, 22 changer transitions 0/163 dead transitions. [2023-11-17 15:41:48,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 163 transitions, 835 flow [2023-11-17 15:41:48,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 15:41:48,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 15:41:48,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1219 transitions. [2023-11-17 15:41:48,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268207282913165 [2023-11-17 15:41:48,055 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1219 transitions. [2023-11-17 15:41:48,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1219 transitions. [2023-11-17 15:41:48,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:41:48,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1219 transitions. [2023-11-17 15:41:48,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 152.375) internal successors, (1219), 8 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:48,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 357.0) internal successors, (3213), 9 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:48,062 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 357.0) internal successors, (3213), 9 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:48,062 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 149 flow. Second operand 8 states and 1219 transitions. [2023-11-17 15:41:48,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 163 transitions, 835 flow [2023-11-17 15:41:48,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 163 transitions, 835 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 15:41:48,216 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 316 flow [2023-11-17 15:41:48,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=316, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2023-11-17 15:41:48,217 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2023-11-17 15:41:48,217 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 316 flow [2023-11-17 15:41:48,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:48,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:41:48,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:41:48,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:41:48,262 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-17 15:41:48,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:41:48,263 INFO L85 PathProgramCache]: Analyzing trace with hash 356126372, now seen corresponding path program 1 times [2023-11-17 15:41:48,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:41:48,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520317054] [2023-11-17 15:41:48,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:41:48,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:41:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:41:48,326 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 15:41:48,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:41:48,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520317054] [2023-11-17 15:41:48,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520317054] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:41:48,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:41:48,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:41:48,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948881971] [2023-11-17 15:41:48,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:41:48,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:41:48,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:41:48,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:41:48,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:41:48,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 357 [2023-11-17 15:41:48,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 316 flow. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:48,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:41:48,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 357 [2023-11-17 15:41:48,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:41:49,100 INFO L124 PetriNetUnfolderBase]: 5852/10272 cut-off events. [2023-11-17 15:41:49,100 INFO L125 PetriNetUnfolderBase]: For 7799/8130 co-relation queries the response was YES. [2023-11-17 15:41:49,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26309 conditions, 10272 events. 5852/10272 cut-off events. For 7799/8130 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 77568 event pairs, 2433 based on Foata normal form. 1069/10578 useless extension candidates. Maximal degree in co-relation 26287. Up to 5984 conditions per place. [2023-11-17 15:41:49,149 INFO L140 encePairwiseOnDemand]: 342/357 looper letters, 63 selfloop transitions, 16 changer transitions 0/96 dead transitions. [2023-11-17 15:41:49,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 96 transitions, 616 flow [2023-11-17 15:41:49,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:41:49,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:41:49,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 495 transitions. [2023-11-17 15:41:49,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46218487394957986 [2023-11-17 15:41:49,151 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 495 transitions. [2023-11-17 15:41:49,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 495 transitions. [2023-11-17 15:41:49,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:41:49,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 495 transitions. [2023-11-17 15:41:49,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:49,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:49,154 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:49,154 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 316 flow. Second operand 3 states and 495 transitions. [2023-11-17 15:41:49,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 96 transitions, 616 flow [2023-11-17 15:41:49,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 96 transitions, 614 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-17 15:41:49,203 INFO L231 Difference]: Finished difference. Result has 70 places, 72 transitions, 403 flow [2023-11-17 15:41:49,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=403, PETRI_PLACES=70, PETRI_TRANSITIONS=72} [2023-11-17 15:41:49,204 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 24 predicate places. [2023-11-17 15:41:49,204 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 72 transitions, 403 flow [2023-11-17 15:41:49,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:49,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:41:49,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:41:49,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 15:41:49,205 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-17 15:41:49,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:41:49,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1249403371, now seen corresponding path program 1 times [2023-11-17 15:41:49,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:41:49,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837734496] [2023-11-17 15:41:49,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:41:49,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:41:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:41:49,301 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 15:41:49,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:41:49,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837734496] [2023-11-17 15:41:49,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837734496] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:41:49,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:41:49,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:41:49,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222926390] [2023-11-17 15:41:49,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:41:49,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:41:49,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:41:49,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:41:49,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:41:49,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 357 [2023-11-17 15:41:49,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 72 transitions, 403 flow. Second operand has 5 states, 5 states have (on average 139.4) internal successors, (697), 5 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:49,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:41:49,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 357 [2023-11-17 15:41:49,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:41:50,283 INFO L124 PetriNetUnfolderBase]: 9715/15126 cut-off events. [2023-11-17 15:41:50,284 INFO L125 PetriNetUnfolderBase]: For 15142/15142 co-relation queries the response was YES. [2023-11-17 15:41:50,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51208 conditions, 15126 events. 9715/15126 cut-off events. For 15142/15142 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 94864 event pairs, 2794 based on Foata normal form. 0/14410 useless extension candidates. Maximal degree in co-relation 51184. Up to 7991 conditions per place. [2023-11-17 15:41:50,364 INFO L140 encePairwiseOnDemand]: 350/357 looper letters, 169 selfloop transitions, 36 changer transitions 1/206 dead transitions. [2023-11-17 15:41:50,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 206 transitions, 1554 flow [2023-11-17 15:41:50,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 15:41:50,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 15:41:50,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1228 transitions. [2023-11-17 15:41:50,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42997198879551823 [2023-11-17 15:41:50,367 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1228 transitions. [2023-11-17 15:41:50,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1228 transitions. [2023-11-17 15:41:50,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:41:50,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1228 transitions. [2023-11-17 15:41:50,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 153.5) internal successors, (1228), 8 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:50,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 357.0) internal successors, (3213), 9 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:50,373 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 357.0) internal successors, (3213), 9 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:50,373 INFO L175 Difference]: Start difference. First operand has 70 places, 72 transitions, 403 flow. Second operand 8 states and 1228 transitions. [2023-11-17 15:41:50,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 206 transitions, 1554 flow [2023-11-17 15:41:50,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 206 transitions, 1498 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:41:50,558 INFO L231 Difference]: Finished difference. Result has 82 places, 97 transitions, 760 flow [2023-11-17 15:41:50,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=760, PETRI_PLACES=82, PETRI_TRANSITIONS=97} [2023-11-17 15:41:50,559 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 36 predicate places. [2023-11-17 15:41:50,559 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 97 transitions, 760 flow [2023-11-17 15:41:50,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 139.4) internal successors, (697), 5 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:50,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:41:50,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:41:50,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 15:41:50,560 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-17 15:41:50,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:41:50,560 INFO L85 PathProgramCache]: Analyzing trace with hash -106448243, now seen corresponding path program 1 times [2023-11-17 15:41:50,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:41:50,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375457828] [2023-11-17 15:41:50,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:41:50,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:41:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:41:50,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:41:50,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:41:50,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375457828] [2023-11-17 15:41:50,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375457828] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:41:50,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:41:50,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 15:41:50,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450028587] [2023-11-17 15:41:50,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:41:50,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:41:50,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:41:50,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:41:50,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-17 15:41:50,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 357 [2023-11-17 15:41:50,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 97 transitions, 760 flow. Second operand has 6 states, 6 states have (on average 136.16666666666666) internal successors, (817), 6 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:50,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:41:50,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 357 [2023-11-17 15:41:50,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:41:52,102 INFO L124 PetriNetUnfolderBase]: 11079/17425 cut-off events. [2023-11-17 15:41:52,102 INFO L125 PetriNetUnfolderBase]: For 29287/29287 co-relation queries the response was YES. [2023-11-17 15:41:52,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59600 conditions, 17425 events. 11079/17425 cut-off events. For 29287/29287 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 115463 event pairs, 2755 based on Foata normal form. 386/17530 useless extension candidates. Maximal degree in co-relation 59569. Up to 8089 conditions per place. [2023-11-17 15:41:52,188 INFO L140 encePairwiseOnDemand]: 351/357 looper letters, 206 selfloop transitions, 41 changer transitions 0/247 dead transitions. [2023-11-17 15:41:52,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 247 transitions, 1970 flow [2023-11-17 15:41:52,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:41:52,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:41:52,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1089 transitions. [2023-11-17 15:41:52,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43577430972388953 [2023-11-17 15:41:52,193 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1089 transitions. [2023-11-17 15:41:52,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1089 transitions. [2023-11-17 15:41:52,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:41:52,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1089 transitions. [2023-11-17 15:41:52,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 155.57142857142858) internal successors, (1089), 7 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:52,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 357.0) internal successors, (2856), 8 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:52,203 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 357.0) internal successors, (2856), 8 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:52,204 INFO L175 Difference]: Start difference. First operand has 82 places, 97 transitions, 760 flow. Second operand 7 states and 1089 transitions. [2023-11-17 15:41:52,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 247 transitions, 1970 flow [2023-11-17 15:41:52,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 247 transitions, 1966 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-17 15:41:52,378 INFO L231 Difference]: Finished difference. Result has 92 places, 101 transitions, 888 flow [2023-11-17 15:41:52,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=888, PETRI_PLACES=92, PETRI_TRANSITIONS=101} [2023-11-17 15:41:52,379 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2023-11-17 15:41:52,379 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 101 transitions, 888 flow [2023-11-17 15:41:52,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.16666666666666) internal successors, (817), 6 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:52,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:41:52,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:41:52,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 15:41:52,380 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-17 15:41:52,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:41:52,380 INFO L85 PathProgramCache]: Analyzing trace with hash -206422924, now seen corresponding path program 1 times [2023-11-17 15:41:52,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:41:52,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247782336] [2023-11-17 15:41:52,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:41:52,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:41:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:41:52,439 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 15:41:52,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:41:52,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247782336] [2023-11-17 15:41:52,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247782336] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:41:52,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:41:52,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:41:52,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554092473] [2023-11-17 15:41:52,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:41:52,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:41:52,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:41:52,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:41:52,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:41:52,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 357 [2023-11-17 15:41:52,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 101 transitions, 888 flow. Second operand has 5 states, 5 states have (on average 141.6) internal successors, (708), 5 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:52,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:41:52,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 357 [2023-11-17 15:41:52,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:41:53,519 INFO L124 PetriNetUnfolderBase]: 5418/9704 cut-off events. [2023-11-17 15:41:53,519 INFO L125 PetriNetUnfolderBase]: For 22465/23044 co-relation queries the response was YES. [2023-11-17 15:41:53,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35813 conditions, 9704 events. 5418/9704 cut-off events. For 22465/23044 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 73150 event pairs, 1219 based on Foata normal form. 1063/10565 useless extension candidates. Maximal degree in co-relation 35777. Up to 4450 conditions per place. [2023-11-17 15:41:53,559 INFO L140 encePairwiseOnDemand]: 351/357 looper letters, 148 selfloop transitions, 10 changer transitions 9/196 dead transitions. [2023-11-17 15:41:53,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 196 transitions, 1880 flow [2023-11-17 15:41:53,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:41:53,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:41:53,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 778 transitions. [2023-11-17 15:41:53,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358543417366947 [2023-11-17 15:41:53,561 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 778 transitions. [2023-11-17 15:41:53,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 778 transitions. [2023-11-17 15:41:53,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:41:53,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 778 transitions. [2023-11-17 15:41:53,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 155.6) internal successors, (778), 5 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:53,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 357.0) internal successors, (2142), 6 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:53,565 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 357.0) internal successors, (2142), 6 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:53,565 INFO L175 Difference]: Start difference. First operand has 92 places, 101 transitions, 888 flow. Second operand 5 states and 778 transitions. [2023-11-17 15:41:53,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 196 transitions, 1880 flow [2023-11-17 15:41:53,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 196 transitions, 1796 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-17 15:41:53,644 INFO L231 Difference]: Finished difference. Result has 93 places, 97 transitions, 814 flow [2023-11-17 15:41:53,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=814, PETRI_PLACES=93, PETRI_TRANSITIONS=97} [2023-11-17 15:41:53,645 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 47 predicate places. [2023-11-17 15:41:53,645 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 97 transitions, 814 flow [2023-11-17 15:41:53,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 141.6) internal successors, (708), 5 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:53,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:41:53,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:41:53,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 15:41:53,646 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-17 15:41:53,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:41:53,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1282257088, now seen corresponding path program 1 times [2023-11-17 15:41:53,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:41:53,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263256366] [2023-11-17 15:41:53,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:41:53,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:41:53,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:41:53,788 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 15:41:53,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:41:53,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263256366] [2023-11-17 15:41:53,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263256366] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:41:53,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:41:53,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:41:53,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056763778] [2023-11-17 15:41:53,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:41:53,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:41:53,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:41:53,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:41:53,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:41:53,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 357 [2023-11-17 15:41:53,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 97 transitions, 814 flow. Second operand has 5 states, 5 states have (on average 141.6) internal successors, (708), 5 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:53,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:41:53,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 357 [2023-11-17 15:41:53,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:41:54,122 INFO L124 PetriNetUnfolderBase]: 1456/3175 cut-off events. [2023-11-17 15:41:54,122 INFO L125 PetriNetUnfolderBase]: For 9676/9890 co-relation queries the response was YES. [2023-11-17 15:41:54,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12539 conditions, 3175 events. 1456/3175 cut-off events. For 9676/9890 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 23327 event pairs, 201 based on Foata normal form. 492/3653 useless extension candidates. Maximal degree in co-relation 12503. Up to 1871 conditions per place. [2023-11-17 15:41:54,138 INFO L140 encePairwiseOnDemand]: 348/357 looper letters, 67 selfloop transitions, 15 changer transitions 0/109 dead transitions. [2023-11-17 15:41:54,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 109 transitions, 995 flow [2023-11-17 15:41:54,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:41:54,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:41:54,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 601 transitions. [2023-11-17 15:41:54,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4208683473389356 [2023-11-17 15:41:54,141 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 601 transitions. [2023-11-17 15:41:54,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 601 transitions. [2023-11-17 15:41:54,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:41:54,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 601 transitions. [2023-11-17 15:41:54,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 150.25) internal successors, (601), 4 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:54,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 357.0) internal successors, (1785), 5 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:54,144 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 357.0) internal successors, (1785), 5 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:54,144 INFO L175 Difference]: Start difference. First operand has 93 places, 97 transitions, 814 flow. Second operand 4 states and 601 transitions. [2023-11-17 15:41:54,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 109 transitions, 995 flow [2023-11-17 15:41:54,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 109 transitions, 942 flow, removed 7 selfloop flow, removed 6 redundant places. [2023-11-17 15:41:54,172 INFO L231 Difference]: Finished difference. Result has 89 places, 88 transitions, 689 flow [2023-11-17 15:41:54,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=689, PETRI_PLACES=89, PETRI_TRANSITIONS=88} [2023-11-17 15:41:54,173 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 43 predicate places. [2023-11-17 15:41:54,173 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 88 transitions, 689 flow [2023-11-17 15:41:54,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 141.6) internal successors, (708), 5 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:54,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:41:54,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:41:54,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 15:41:54,174 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-17 15:41:54,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:41:54,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1767179290, now seen corresponding path program 1 times [2023-11-17 15:41:54,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:41:54,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952148176] [2023-11-17 15:41:54,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:41:54,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:41:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:41:54,245 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 15:41:54,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:41:54,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952148176] [2023-11-17 15:41:54,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952148176] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:41:54,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:41:54,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 15:41:54,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873356738] [2023-11-17 15:41:54,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:41:54,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:41:54,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:41:54,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:41:54,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-17 15:41:54,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 357 [2023-11-17 15:41:54,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 88 transitions, 689 flow. Second operand has 6 states, 6 states have (on average 136.83333333333334) internal successors, (821), 6 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:54,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:41:54,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 357 [2023-11-17 15:41:54,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:41:54,826 INFO L124 PetriNetUnfolderBase]: 2324/4494 cut-off events. [2023-11-17 15:41:54,826 INFO L125 PetriNetUnfolderBase]: For 9778/9778 co-relation queries the response was YES. [2023-11-17 15:41:54,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17382 conditions, 4494 events. 2324/4494 cut-off events. For 9778/9778 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 30441 event pairs, 355 based on Foata normal form. 154/4648 useless extension candidates. Maximal degree in co-relation 17347. Up to 1662 conditions per place. [2023-11-17 15:41:54,846 INFO L140 encePairwiseOnDemand]: 349/357 looper letters, 227 selfloop transitions, 42 changer transitions 10/279 dead transitions. [2023-11-17 15:41:54,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 279 transitions, 2228 flow [2023-11-17 15:41:54,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 15:41:54,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 15:41:54,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1937 transitions. [2023-11-17 15:41:54,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173669467787115 [2023-11-17 15:41:54,850 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1937 transitions. [2023-11-17 15:41:54,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1937 transitions. [2023-11-17 15:41:54,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:41:54,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1937 transitions. [2023-11-17 15:41:54,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 149.0) internal successors, (1937), 13 states have internal predecessors, (1937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:54,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 357.0) internal successors, (4998), 14 states have internal predecessors, (4998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:54,858 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 357.0) internal successors, (4998), 14 states have internal predecessors, (4998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:54,858 INFO L175 Difference]: Start difference. First operand has 89 places, 88 transitions, 689 flow. Second operand 13 states and 1937 transitions. [2023-11-17 15:41:54,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 279 transitions, 2228 flow [2023-11-17 15:41:54,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 279 transitions, 2137 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-17 15:41:54,889 INFO L231 Difference]: Finished difference. Result has 102 places, 95 transitions, 863 flow [2023-11-17 15:41:54,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=863, PETRI_PLACES=102, PETRI_TRANSITIONS=95} [2023-11-17 15:41:54,890 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 56 predicate places. [2023-11-17 15:41:54,890 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 95 transitions, 863 flow [2023-11-17 15:41:54,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.83333333333334) internal successors, (821), 6 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:54,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:41:54,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:41:54,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 15:41:54,890 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-17 15:41:54,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:41:54,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1493942997, now seen corresponding path program 1 times [2023-11-17 15:41:54,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:41:54,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646147397] [2023-11-17 15:41:54,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:41:54,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:41:54,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:41:54,956 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 15:41:54,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:41:54,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646147397] [2023-11-17 15:41:54,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646147397] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:41:54,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:41:54,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 15:41:54,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838257358] [2023-11-17 15:41:54,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:41:54,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:41:54,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:41:54,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:41:54,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-17 15:41:54,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 357 [2023-11-17 15:41:54,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 95 transitions, 863 flow. Second operand has 6 states, 6 states have (on average 134.16666666666666) internal successors, (805), 6 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:54,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:41:54,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 357 [2023-11-17 15:41:54,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:41:55,541 INFO L124 PetriNetUnfolderBase]: 2353/4563 cut-off events. [2023-11-17 15:41:55,541 INFO L125 PetriNetUnfolderBase]: For 12786/12786 co-relation queries the response was YES. [2023-11-17 15:41:55,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19123 conditions, 4563 events. 2353/4563 cut-off events. For 12786/12786 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 30576 event pairs, 518 based on Foata normal form. 49/4612 useless extension candidates. Maximal degree in co-relation 19084. Up to 1707 conditions per place. [2023-11-17 15:41:55,560 INFO L140 encePairwiseOnDemand]: 349/357 looper letters, 213 selfloop transitions, 37 changer transitions 21/271 dead transitions. [2023-11-17 15:41:55,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 271 transitions, 2592 flow [2023-11-17 15:41:55,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 15:41:55,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 15:41:55,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1864 transitions. [2023-11-17 15:41:55,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40163757810816636 [2023-11-17 15:41:55,567 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1864 transitions. [2023-11-17 15:41:55,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1864 transitions. [2023-11-17 15:41:55,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:41:55,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1864 transitions. [2023-11-17 15:41:55,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 143.3846153846154) internal successors, (1864), 13 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:55,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 357.0) internal successors, (4998), 14 states have internal predecessors, (4998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:55,574 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 357.0) internal successors, (4998), 14 states have internal predecessors, (4998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:55,574 INFO L175 Difference]: Start difference. First operand has 102 places, 95 transitions, 863 flow. Second operand 13 states and 1864 transitions. [2023-11-17 15:41:55,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 271 transitions, 2592 flow [2023-11-17 15:41:55,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 271 transitions, 2416 flow, removed 39 selfloop flow, removed 10 redundant places. [2023-11-17 15:41:55,614 INFO L231 Difference]: Finished difference. Result has 107 places, 101 transitions, 873 flow [2023-11-17 15:41:55,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=873, PETRI_PLACES=107, PETRI_TRANSITIONS=101} [2023-11-17 15:41:55,614 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 61 predicate places. [2023-11-17 15:41:55,615 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 101 transitions, 873 flow [2023-11-17 15:41:55,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.16666666666666) internal successors, (805), 6 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:55,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:41:55,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:41:55,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 15:41:55,615 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-17 15:41:55,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:41:55,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1736398523, now seen corresponding path program 1 times [2023-11-17 15:41:55,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:41:55,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945804410] [2023-11-17 15:41:55,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:41:55,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:41:55,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:41:55,716 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 15:41:55,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:41:55,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945804410] [2023-11-17 15:41:55,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945804410] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:41:55,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:41:55,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:41:55,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362626133] [2023-11-17 15:41:55,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:41:55,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:41:55,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:41:55,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:41:55,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:41:55,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 357 [2023-11-17 15:41:55,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 101 transitions, 873 flow. Second operand has 5 states, 5 states have (on average 142.2) internal successors, (711), 5 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:55,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:41:55,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 357 [2023-11-17 15:41:55,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:41:55,850 INFO L124 PetriNetUnfolderBase]: 424/1268 cut-off events. [2023-11-17 15:41:55,851 INFO L125 PetriNetUnfolderBase]: For 3067/3083 co-relation queries the response was YES. [2023-11-17 15:41:55,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4899 conditions, 1268 events. 424/1268 cut-off events. For 3067/3083 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 8503 event pairs, 137 based on Foata normal form. 87/1355 useless extension candidates. Maximal degree in co-relation 4859. Up to 665 conditions per place. [2023-11-17 15:41:55,856 INFO L140 encePairwiseOnDemand]: 346/357 looper letters, 38 selfloop transitions, 13 changer transitions 14/80 dead transitions. [2023-11-17 15:41:55,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 80 transitions, 714 flow [2023-11-17 15:41:55,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:41:55,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:41:55,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 597 transitions. [2023-11-17 15:41:55,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4180672268907563 [2023-11-17 15:41:55,857 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 597 transitions. [2023-11-17 15:41:55,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 597 transitions. [2023-11-17 15:41:55,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:41:55,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 597 transitions. [2023-11-17 15:41:55,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 149.25) internal successors, (597), 4 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:55,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 357.0) internal successors, (1785), 5 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:55,860 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 357.0) internal successors, (1785), 5 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:55,860 INFO L175 Difference]: Start difference. First operand has 107 places, 101 transitions, 873 flow. Second operand 4 states and 597 transitions. [2023-11-17 15:41:55,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 80 transitions, 714 flow [2023-11-17 15:41:55,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 80 transitions, 590 flow, removed 13 selfloop flow, removed 19 redundant places. [2023-11-17 15:41:55,869 INFO L231 Difference]: Finished difference. Result has 85 places, 56 transitions, 343 flow [2023-11-17 15:41:55,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=343, PETRI_PLACES=85, PETRI_TRANSITIONS=56} [2023-11-17 15:41:55,869 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 39 predicate places. [2023-11-17 15:41:55,869 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 56 transitions, 343 flow [2023-11-17 15:41:55,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 142.2) internal successors, (711), 5 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:55,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:41:55,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:41:55,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 15:41:55,870 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-17 15:41:55,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:41:55,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1202369699, now seen corresponding path program 1 times [2023-11-17 15:41:55,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:41:55,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421128514] [2023-11-17 15:41:55,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:41:55,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:41:55,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:41:55,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:41:55,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:41:55,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421128514] [2023-11-17 15:41:55,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421128514] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:41:55,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:41:55,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 15:41:55,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839205437] [2023-11-17 15:41:55,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:41:55,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:41:55,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:41:55,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:41:55,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-17 15:41:55,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 357 [2023-11-17 15:41:55,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 56 transitions, 343 flow. Second operand has 6 states, 6 states have (on average 137.5) internal successors, (825), 6 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:55,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:41:55,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 357 [2023-11-17 15:41:55,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:41:56,146 INFO L124 PetriNetUnfolderBase]: 354/858 cut-off events. [2023-11-17 15:41:56,146 INFO L125 PetriNetUnfolderBase]: For 1063/1063 co-relation queries the response was YES. [2023-11-17 15:41:56,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3029 conditions, 858 events. 354/858 cut-off events. For 1063/1063 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4272 event pairs, 163 based on Foata normal form. 40/898 useless extension candidates. Maximal degree in co-relation 3014. Up to 422 conditions per place. [2023-11-17 15:41:56,148 INFO L140 encePairwiseOnDemand]: 351/357 looper letters, 0 selfloop transitions, 0 changer transitions 83/83 dead transitions. [2023-11-17 15:41:56,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 83 transitions, 636 flow [2023-11-17 15:41:56,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:41:56,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:41:56,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1006 transitions. [2023-11-17 15:41:56,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025610244097639 [2023-11-17 15:41:56,150 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1006 transitions. [2023-11-17 15:41:56,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1006 transitions. [2023-11-17 15:41:56,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:41:56,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1006 transitions. [2023-11-17 15:41:56,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 143.71428571428572) internal successors, (1006), 7 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:56,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 357.0) internal successors, (2856), 8 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:56,154 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 357.0) internal successors, (2856), 8 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:56,155 INFO L175 Difference]: Start difference. First operand has 85 places, 56 transitions, 343 flow. Second operand 7 states and 1006 transitions. [2023-11-17 15:41:56,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 83 transitions, 636 flow [2023-11-17 15:41:56,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 83 transitions, 563 flow, removed 5 selfloop flow, removed 10 redundant places. [2023-11-17 15:41:56,157 INFO L231 Difference]: Finished difference. Result has 75 places, 0 transitions, 0 flow [2023-11-17 15:41:56,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=75, PETRI_TRANSITIONS=0} [2023-11-17 15:41:56,157 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 29 predicate places. [2023-11-17 15:41:56,157 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 0 transitions, 0 flow [2023-11-17 15:41:56,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.5) internal successors, (825), 6 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:56,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (8 of 9 remaining) [2023-11-17 15:41:56,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2023-11-17 15:41:56,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2023-11-17 15:41:56,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2023-11-17 15:41:56,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2023-11-17 15:41:56,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 9 remaining) [2023-11-17 15:41:56,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 9 remaining) [2023-11-17 15:41:56,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2023-11-17 15:41:56,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2023-11-17 15:41:56,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 15:41:56,161 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:41:56,164 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 15:41:56,164 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 15:41:56,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:41:56 BasicIcfg [2023-11-17 15:41:56,166 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 15:41:56,167 INFO L158 Benchmark]: Toolchain (without parser) took 17156.02ms. Allocated memory was 191.9MB in the beginning and 3.8GB in the end (delta: 3.6GB). Free memory was 153.3MB in the beginning and 3.2GB in the end (delta: -3.1GB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. [2023-11-17 15:41:56,167 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 191.9MB. Free memory is still 147.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:41:56,167 INFO L158 Benchmark]: CACSL2BoogieTranslator took 308.95ms. Allocated memory is still 191.9MB. Free memory was 152.9MB in the beginning and 133.0MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-17 15:41:56,167 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.20ms. Allocated memory is still 191.9MB. Free memory was 132.8MB in the beginning and 130.3MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 15:41:56,167 INFO L158 Benchmark]: Boogie Preprocessor took 28.33ms. Allocated memory is still 191.9MB. Free memory was 130.3MB in the beginning and 128.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 15:41:56,167 INFO L158 Benchmark]: RCFGBuilder took 399.27ms. Allocated memory is still 191.9MB. Free memory was 128.8MB in the beginning and 107.2MB in the end (delta: 21.6MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2023-11-17 15:41:56,168 INFO L158 Benchmark]: TraceAbstraction took 16354.35ms. Allocated memory was 191.9MB in the beginning and 3.8GB in the end (delta: 3.6GB). Free memory was 106.6MB in the beginning and 3.2GB in the end (delta: -3.1GB). Peak memory consumption was 967.1MB. Max. memory is 8.0GB. [2023-11-17 15:41:56,168 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 191.9MB. Free memory is still 147.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 308.95ms. Allocated memory is still 191.9MB. Free memory was 152.9MB in the beginning and 133.0MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 50.20ms. Allocated memory is still 191.9MB. Free memory was 132.8MB in the beginning and 130.3MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.33ms. Allocated memory is still 191.9MB. Free memory was 130.3MB in the beginning and 128.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 399.27ms. Allocated memory is still 191.9MB. Free memory was 128.8MB in the beginning and 107.2MB in the end (delta: 21.6MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * TraceAbstraction took 16354.35ms. Allocated memory was 191.9MB in the beginning and 3.8GB in the end (delta: 3.6GB). Free memory was 106.6MB in the beginning and 3.2GB in the end (delta: -3.1GB). Peak memory consumption was 967.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.3s, 180 PlacesBefore, 46 PlacesAfterwards, 175 TransitionsBefore, 40 TransitionsAfterwards, 12246 CoEnabledTransitionPairs, 10 FixpointIterations, 37 TrivialSequentialCompositions, 120 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 21 ConcurrentYvCompositions, 1 ChoiceCompositions, 179 TotalNumberOfCompositions, 26897 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 11775, independent: 11291, independent conditional: 0, independent unconditional: 11291, dependent: 484, dependent conditional: 0, dependent unconditional: 484, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 8248, independent: 8162, independent conditional: 0, independent unconditional: 8162, dependent: 86, dependent conditional: 0, dependent unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 8248, independent: 7932, independent conditional: 0, independent unconditional: 7932, dependent: 316, dependent conditional: 0, dependent unconditional: 316, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 316, independent: 230, independent conditional: 0, independent unconditional: 230, dependent: 86, dependent conditional: 0, dependent unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 274, independent: 133, independent conditional: 0, independent unconditional: 133, dependent: 141, dependent conditional: 0, dependent unconditional: 141, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 11775, independent: 3129, independent conditional: 0, independent unconditional: 3129, dependent: 398, dependent conditional: 0, dependent unconditional: 398, unknown: 8248, unknown conditional: 0, unknown unconditional: 8248] , Statistics on independence cache: Total cache size (in pairs): 255, Positive cache size: 218, Positive conditional cache size: 0, Positive unconditional cache size: 218, Negative cache size: 37, Negative conditional cache size: 0, Negative unconditional cache size: 37, 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 - 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 7 procedures, 259 locations, 9 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: 16.3s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 10.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1018 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1018 mSDsluCounter, 43 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 58 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2536 IncrementalHoareTripleChecker+Invalid, 2594 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 58 mSolverCounterUnsat, 22 mSDtfsCounter, 2536 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=888occurred in iteration=5, InterpolantAutomatonStates: 80, 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, 0.9s InterpolantComputationTime, 158 NumberOfCodeBlocks, 158 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 147 ConstructedInterpolants, 0 QuantifiedInterpolants, 610 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-17 15:41:56,184 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...