/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/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 11:43:34,387 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:43:34,482 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 11:43:34,511 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:43:34,513 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:43:34,513 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:43:34,514 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:43:34,514 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:43:34,515 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:43:34,519 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:43:34,520 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:43:34,520 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:43:34,520 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:43:34,521 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:43:34,521 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:43:34,522 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:43:34,522 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:43:34,522 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:43:34,522 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:43:34,522 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:43:34,523 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:43:34,524 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:43:34,524 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:43:34,524 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:43:34,524 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:43:34,524 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:43:34,525 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:43:34,525 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:43:34,525 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:43:34,525 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:43:34,526 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:43:34,526 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:43:34,526 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:43:34,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:43:34,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:43:34,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:43:34,820 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:43:34,820 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:43:34,821 INFO L431 ainManager$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 11:43:36,071 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:43:36,289 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:43:36,291 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i [2023-11-17 11:43:36,306 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab38aff2f/d6e7301732424b778ea7b3b0e1c71c56/FLAG3b8c73a0b [2023-11-17 11:43:36,321 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab38aff2f/d6e7301732424b778ea7b3b0e1c71c56 [2023-11-17 11:43:36,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:43:36,325 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:43:36,326 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:43:36,326 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:43:36,336 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:43:36,337 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:43:36" (1/1) ... [2023-11-17 11:43:36,338 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b623a76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:36, skipping insertion in model container [2023-11-17 11:43:36,338 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:43:36" (1/1) ... [2023-11-17 11:43:36,399 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:43:36,561 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 11:43:36,746 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:43:36,764 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:43:36,778 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 11:43:36,808 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:43:36,857 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:43:36,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:36 WrapperNode [2023-11-17 11:43:36,858 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:43:36,859 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:43:36,859 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:43:36,859 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:43:36,866 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:36" (1/1) ... [2023-11-17 11:43:36,891 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:36" (1/1) ... [2023-11-17 11:43:36,929 INFO L138 Inliner]: procedures = 166, calls = 53, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 149 [2023-11-17 11:43:36,930 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:43:36,931 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:43:36,931 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:43:36,931 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:43:36,939 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:36" (1/1) ... [2023-11-17 11:43:36,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:36" (1/1) ... [2023-11-17 11:43:36,952 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:36" (1/1) ... [2023-11-17 11:43:36,953 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:36" (1/1) ... [2023-11-17 11:43:36,961 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:36" (1/1) ... [2023-11-17 11:43:36,963 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:36" (1/1) ... [2023-11-17 11:43:36,965 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:36" (1/1) ... [2023-11-17 11:43:36,966 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:36" (1/1) ... [2023-11-17 11:43:36,979 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:43:36,980 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:43:36,980 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:43:36,981 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:43:36,981 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:36" (1/1) ... [2023-11-17 11:43:36,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:43:36,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:43:37,012 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 11:43:37,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 11:43:37,055 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-17 11:43:37,055 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-17 11:43:37,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:43:37,056 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-17 11:43:37,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:43:37,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:43:37,057 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-11-17 11:43:37,057 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-11-17 11:43:37,057 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-17 11:43:37,058 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-17 11:43:37,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:43:37,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:43:37,058 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-17 11:43:37,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:43:37,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:43:37,060 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 11:43:37,214 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:43:37,216 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:43:37,528 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:43:37,752 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:43:37,752 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 11:43:37,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:43:37 BoogieIcfgContainer [2023-11-17 11:43:37,754 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:43:37,756 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:43:37,757 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:43:37,760 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:43:37,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:43:36" (1/3) ... [2023-11-17 11:43:37,761 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@689f1211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:43:37, skipping insertion in model container [2023-11-17 11:43:37,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:43:36" (2/3) ... [2023-11-17 11:43:37,761 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@689f1211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:43:37, skipping insertion in model container [2023-11-17 11:43:37,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:43:37" (3/3) ... [2023-11-17 11:43:37,762 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_21-traces-cluster-based_true.i [2023-11-17 11:43:37,783 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:43:37,783 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-17 11:43:37,783 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:43:37,845 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 11:43:37,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 68 transitions, 148 flow [2023-11-17 11:43:37,927 INFO L124 PetriNetUnfolderBase]: 5/65 cut-off events. [2023-11-17 11:43:37,928 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:43:37,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 5/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 148 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2023-11-17 11:43:37,937 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 68 transitions, 148 flow [2023-11-17 11:43:37,945 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 65 transitions, 139 flow [2023-11-17 11:43:37,949 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:43:37,964 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 65 transitions, 139 flow [2023-11-17 11:43:37,968 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 65 transitions, 139 flow [2023-11-17 11:43:37,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 65 transitions, 139 flow [2023-11-17 11:43:38,000 INFO L124 PetriNetUnfolderBase]: 5/65 cut-off events. [2023-11-17 11:43:38,000 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:43:38,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 5/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 147 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2023-11-17 11:43:38,005 INFO L119 LiptonReduction]: Number of co-enabled transitions 2736 [2023-11-17 11:43:39,618 INFO L134 LiptonReduction]: Checked pairs total: 7903 [2023-11-17 11:43:39,618 INFO L136 LiptonReduction]: Total number of compositions: 53 [2023-11-17 11:43:39,640 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:43:39,649 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;@48b3c212, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:43:39,649 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-17 11:43:39,657 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:43:39,657 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-17 11:43:39,657 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:43:39,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:43:39,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:43:39,658 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 11:43:39,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:43:39,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1605018189, now seen corresponding path program 1 times [2023-11-17 11:43:39,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:43:39,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856872913] [2023-11-17 11:43:39,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:43:39,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:43:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:43:40,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:43:40,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:43:40,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856872913] [2023-11-17 11:43:40,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856872913] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:43:40,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:43:40,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:43:40,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228758921] [2023-11-17 11:43:40,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:43:40,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:43:40,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:43:40,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:43:40,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:43:40,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 121 [2023-11-17 11:43:40,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:40,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:43:40,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 121 [2023-11-17 11:43:40,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:43:41,227 INFO L124 PetriNetUnfolderBase]: 6313/9002 cut-off events. [2023-11-17 11:43:41,227 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-17 11:43:41,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18123 conditions, 9002 events. 6313/9002 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 45504 event pairs, 1921 based on Foata normal form. 0/7582 useless extension candidates. Maximal degree in co-relation 18112. Up to 2894 conditions per place. [2023-11-17 11:43:41,300 INFO L140 encePairwiseOnDemand]: 115/121 looper letters, 87 selfloop transitions, 5 changer transitions 0/92 dead transitions. [2023-11-17 11:43:41,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 92 transitions, 389 flow [2023-11-17 11:43:41,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:43:41,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:43:41,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 218 transitions. [2023-11-17 11:43:41,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3603305785123967 [2023-11-17 11:43:41,314 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 218 transitions. [2023-11-17 11:43:41,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 218 transitions. [2023-11-17 11:43:41,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:43:41,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 218 transitions. [2023-11-17 11:43:41,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 43.6) internal successors, (218), 5 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:41,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 121.0) internal successors, (726), 6 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:41,325 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 121.0) internal successors, (726), 6 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:41,326 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 75 flow. Second operand 5 states and 218 transitions. [2023-11-17 11:43:41,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 92 transitions, 389 flow [2023-11-17 11:43:41,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 92 transitions, 382 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 11:43:41,333 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 104 flow [2023-11-17 11:43:41,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=104, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2023-11-17 11:43:41,338 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2023-11-17 11:43:41,338 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 104 flow [2023-11-17 11:43:41,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:41,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:43:41,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:43:41,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:43:41,339 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 11:43:41,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:43:41,340 INFO L85 PathProgramCache]: Analyzing trace with hash 439848574, now seen corresponding path program 1 times [2023-11-17 11:43:41,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:43:41,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558341423] [2023-11-17 11:43:41,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:43:41,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:43:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:43:41,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:43:41,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:43:41,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558341423] [2023-11-17 11:43:41,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558341423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:43:41,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:43:41,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:43:41,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964628207] [2023-11-17 11:43:41,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:43:41,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:43:41,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:43:41,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:43:41,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:43:41,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 121 [2023-11-17 11:43:41,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:41,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:43:41,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 121 [2023-11-17 11:43:41,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:43:42,355 INFO L124 PetriNetUnfolderBase]: 5729/8194 cut-off events. [2023-11-17 11:43:42,356 INFO L125 PetriNetUnfolderBase]: For 2692/2692 co-relation queries the response was YES. [2023-11-17 11:43:42,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19072 conditions, 8194 events. 5729/8194 cut-off events. For 2692/2692 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 40783 event pairs, 1275 based on Foata normal form. 0/7470 useless extension candidates. Maximal degree in co-relation 19058. Up to 3693 conditions per place. [2023-11-17 11:43:42,423 INFO L140 encePairwiseOnDemand]: 114/121 looper letters, 77 selfloop transitions, 7 changer transitions 0/84 dead transitions. [2023-11-17 11:43:42,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 84 transitions, 410 flow [2023-11-17 11:43:42,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:43:42,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:43:42,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 202 transitions. [2023-11-17 11:43:42,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3338842975206612 [2023-11-17 11:43:42,429 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 202 transitions. [2023-11-17 11:43:42,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 202 transitions. [2023-11-17 11:43:42,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:43:42,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 202 transitions. [2023-11-17 11:43:42,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 40.4) internal successors, (202), 5 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:42,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 121.0) internal successors, (726), 6 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:42,435 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 121.0) internal successors, (726), 6 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:42,435 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 104 flow. Second operand 5 states and 202 transitions. [2023-11-17 11:43:42,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 84 transitions, 410 flow [2023-11-17 11:43:42,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 84 transitions, 410 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 11:43:42,475 INFO L231 Difference]: Finished difference. Result has 53 places, 38 transitions, 146 flow [2023-11-17 11:43:42,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=146, PETRI_PLACES=53, PETRI_TRANSITIONS=38} [2023-11-17 11:43:42,476 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 12 predicate places. [2023-11-17 11:43:42,476 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 38 transitions, 146 flow [2023-11-17 11:43:42,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:42,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:43:42,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:43:42,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:43:42,478 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-17 11:43:42,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:43:42,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1812476198, now seen corresponding path program 1 times [2023-11-17 11:43:42,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:43:42,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714162790] [2023-11-17 11:43:42,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:43:42,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:43:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:43:42,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:43:42,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:43:42,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714162790] [2023-11-17 11:43:42,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714162790] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:43:42,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:43:42,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:43:42,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403450868] [2023-11-17 11:43:42,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:43:42,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:43:42,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:43:42,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:43:42,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:43:42,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 121 [2023-11-17 11:43:42,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 38 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:42,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:43:42,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 121 [2023-11-17 11:43:42,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:43:43,616 INFO L124 PetriNetUnfolderBase]: 6669/9518 cut-off events. [2023-11-17 11:43:43,616 INFO L125 PetriNetUnfolderBase]: For 6666/6666 co-relation queries the response was YES. [2023-11-17 11:43:43,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25162 conditions, 9518 events. 6669/9518 cut-off events. For 6666/6666 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 47204 event pairs, 2295 based on Foata normal form. 0/9124 useless extension candidates. Maximal degree in co-relation 25142. Up to 5025 conditions per place. [2023-11-17 11:43:43,686 INFO L140 encePairwiseOnDemand]: 116/121 looper letters, 78 selfloop transitions, 7 changer transitions 2/87 dead transitions. [2023-11-17 11:43:43,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 87 transitions, 494 flow [2023-11-17 11:43:43,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:43:43,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:43:43,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 199 transitions. [2023-11-17 11:43:43,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32892561983471075 [2023-11-17 11:43:43,688 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 199 transitions. [2023-11-17 11:43:43,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 199 transitions. [2023-11-17 11:43:43,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:43:43,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 199 transitions. [2023-11-17 11:43:43,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:43,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 121.0) internal successors, (726), 6 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:43,691 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 121.0) internal successors, (726), 6 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:43,691 INFO L175 Difference]: Start difference. First operand has 53 places, 38 transitions, 146 flow. Second operand 5 states and 199 transitions. [2023-11-17 11:43:43,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 87 transitions, 494 flow [2023-11-17 11:43:43,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 87 transitions, 494 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 11:43:43,742 INFO L231 Difference]: Finished difference. Result has 61 places, 41 transitions, 196 flow [2023-11-17 11:43:43,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196, PETRI_PLACES=61, PETRI_TRANSITIONS=41} [2023-11-17 11:43:43,743 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 20 predicate places. [2023-11-17 11:43:43,743 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 41 transitions, 196 flow [2023-11-17 11:43:43,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:43,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:43:43,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:43:43,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 11:43:43,744 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-17 11:43:43,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:43:43,744 INFO L85 PathProgramCache]: Analyzing trace with hash -186159579, now seen corresponding path program 1 times [2023-11-17 11:43:43,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:43:43,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489539344] [2023-11-17 11:43:43,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:43:43,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:43:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:43:43,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:43:43,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:43:43,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489539344] [2023-11-17 11:43:43,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489539344] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:43:43,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:43:43,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:43:43,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506869058] [2023-11-17 11:43:43,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:43:43,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:43:43,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:43:43,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:43:43,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:43:43,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 121 [2023-11-17 11:43:43,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 41 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:43,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:43:43,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 121 [2023-11-17 11:43:43,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:43:44,258 INFO L124 PetriNetUnfolderBase]: 2198/3823 cut-off events. [2023-11-17 11:43:44,258 INFO L125 PetriNetUnfolderBase]: For 3770/3770 co-relation queries the response was YES. [2023-11-17 11:43:44,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11393 conditions, 3823 events. 2198/3823 cut-off events. For 3770/3770 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 22943 event pairs, 852 based on Foata normal form. 686/4509 useless extension candidates. Maximal degree in co-relation 11367. Up to 2355 conditions per place. [2023-11-17 11:43:44,288 INFO L140 encePairwiseOnDemand]: 106/121 looper letters, 56 selfloop transitions, 18 changer transitions 0/74 dead transitions. [2023-11-17 11:43:44,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 74 transitions, 502 flow [2023-11-17 11:43:44,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:43:44,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:43:44,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2023-11-17 11:43:44,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3581267217630854 [2023-11-17 11:43:44,290 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 130 transitions. [2023-11-17 11:43:44,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 130 transitions. [2023-11-17 11:43:44,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:43:44,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 130 transitions. [2023-11-17 11:43:44,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:44,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:44,292 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:44,292 INFO L175 Difference]: Start difference. First operand has 61 places, 41 transitions, 196 flow. Second operand 3 states and 130 transitions. [2023-11-17 11:43:44,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 74 transitions, 502 flow [2023-11-17 11:43:44,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 74 transitions, 502 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 11:43:44,315 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 330 flow [2023-11-17 11:43:44,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=330, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2023-11-17 11:43:44,316 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2023-11-17 11:43:44,316 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 330 flow [2023-11-17 11:43:44,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:44,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:43:44,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:43:44,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 11:43:44,317 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-17 11:43:44,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:43:44,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1314037693, now seen corresponding path program 1 times [2023-11-17 11:43:44,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:43:44,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866256993] [2023-11-17 11:43:44,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:43:44,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:43:44,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:43:44,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:43:44,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:43:44,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866256993] [2023-11-17 11:43:44,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866256993] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:43:44,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:43:44,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:43:44,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807774992] [2023-11-17 11:43:44,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:43:44,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:43:44,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:43:44,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:43:44,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:43:44,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 121 [2023-11-17 11:43:44,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 330 flow. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:44,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:43:44,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 121 [2023-11-17 11:43:44,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:43:44,734 INFO L124 PetriNetUnfolderBase]: 814/1658 cut-off events. [2023-11-17 11:43:44,734 INFO L125 PetriNetUnfolderBase]: For 2785/2785 co-relation queries the response was YES. [2023-11-17 11:43:44,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6529 conditions, 1658 events. 814/1658 cut-off events. For 2785/2785 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 9602 event pairs, 131 based on Foata normal form. 311/1969 useless extension candidates. Maximal degree in co-relation 6501. Up to 1156 conditions per place. [2023-11-17 11:43:44,746 INFO L140 encePairwiseOnDemand]: 112/121 looper letters, 58 selfloop transitions, 16 changer transitions 0/74 dead transitions. [2023-11-17 11:43:44,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 74 transitions, 601 flow [2023-11-17 11:43:44,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:43:44,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:43:44,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2023-11-17 11:43:44,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29132231404958675 [2023-11-17 11:43:44,747 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 141 transitions. [2023-11-17 11:43:44,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 141 transitions. [2023-11-17 11:43:44,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:43:44,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 141 transitions. [2023-11-17 11:43:44,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:44,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:44,750 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:44,750 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 330 flow. Second operand 4 states and 141 transitions. [2023-11-17 11:43:44,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 74 transitions, 601 flow [2023-11-17 11:43:44,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 74 transitions, 568 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-17 11:43:44,763 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 336 flow [2023-11-17 11:43:44,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=336, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2023-11-17 11:43:44,763 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 24 predicate places. [2023-11-17 11:43:44,764 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 336 flow [2023-11-17 11:43:44,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:44,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:43:44,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:43:44,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 11:43:44,764 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-17 11:43:44,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:43:44,765 INFO L85 PathProgramCache]: Analyzing trace with hash 621878844, now seen corresponding path program 1 times [2023-11-17 11:43:44,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:43:44,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031193684] [2023-11-17 11:43:44,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:43:44,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:43:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:43:44,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:43:44,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:43:44,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031193684] [2023-11-17 11:43:44,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031193684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:43:44,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:43:44,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:43:44,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974477650] [2023-11-17 11:43:44,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:43:44,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:43:44,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:43:44,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:43:44,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:43:44,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 121 [2023-11-17 11:43:44,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 336 flow. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:44,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:43:44,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 121 [2023-11-17 11:43:44,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:43:45,172 INFO L124 PetriNetUnfolderBase]: 689/1446 cut-off events. [2023-11-17 11:43:45,172 INFO L125 PetriNetUnfolderBase]: For 2510/2510 co-relation queries the response was YES. [2023-11-17 11:43:45,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5535 conditions, 1446 events. 689/1446 cut-off events. For 2510/2510 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 8274 event pairs, 102 based on Foata normal form. 88/1534 useless extension candidates. Maximal degree in co-relation 5507. Up to 636 conditions per place. [2023-11-17 11:43:45,181 INFO L140 encePairwiseOnDemand]: 117/121 looper letters, 99 selfloop transitions, 10 changer transitions 8/117 dead transitions. [2023-11-17 11:43:45,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 117 transitions, 910 flow [2023-11-17 11:43:45,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:43:45,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:43:45,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 213 transitions. [2023-11-17 11:43:45,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29338842975206614 [2023-11-17 11:43:45,183 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 213 transitions. [2023-11-17 11:43:45,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 213 transitions. [2023-11-17 11:43:45,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:43:45,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 213 transitions. [2023-11-17 11:43:45,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 35.5) internal successors, (213), 6 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:45,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:45,186 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:45,186 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 336 flow. Second operand 6 states and 213 transitions. [2023-11-17 11:43:45,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 117 transitions, 910 flow [2023-11-17 11:43:45,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 117 transitions, 865 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 11:43:45,195 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 344 flow [2023-11-17 11:43:45,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=344, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2023-11-17 11:43:45,197 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 24 predicate places. [2023-11-17 11:43:45,198 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 344 flow [2023-11-17 11:43:45,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:45,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:43:45,198 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 11:43:45,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 11:43:45,199 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 11:43:45,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:43:45,199 INFO L85 PathProgramCache]: Analyzing trace with hash 879504961, now seen corresponding path program 1 times [2023-11-17 11:43:45,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:43:45,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427466664] [2023-11-17 11:43:45,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:43:45,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:43:45,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:43:45,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:43:45,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:43:45,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427466664] [2023-11-17 11:43:45,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427466664] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:43:45,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:43:45,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:43:45,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674038292] [2023-11-17 11:43:45,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:43:45,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:43:45,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:43:45,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:43:45,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:43:45,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 121 [2023-11-17 11:43:45,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 344 flow. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:45,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:43:45,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 121 [2023-11-17 11:43:45,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:43:45,625 INFO L124 PetriNetUnfolderBase]: 619/1314 cut-off events. [2023-11-17 11:43:45,626 INFO L125 PetriNetUnfolderBase]: For 1779/1779 co-relation queries the response was YES. [2023-11-17 11:43:45,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4990 conditions, 1314 events. 619/1314 cut-off events. For 1779/1779 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 7286 event pairs, 167 based on Foata normal form. 24/1338 useless extension candidates. Maximal degree in co-relation 4963. Up to 536 conditions per place. [2023-11-17 11:43:45,633 INFO L140 encePairwiseOnDemand]: 114/121 looper letters, 82 selfloop transitions, 19 changer transitions 17/118 dead transitions. [2023-11-17 11:43:45,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 118 transitions, 891 flow [2023-11-17 11:43:45,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 11:43:45,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 11:43:45,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 262 transitions. [2023-11-17 11:43:45,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2706611570247934 [2023-11-17 11:43:45,636 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 262 transitions. [2023-11-17 11:43:45,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 262 transitions. [2023-11-17 11:43:45,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:43:45,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 262 transitions. [2023-11-17 11:43:45,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 32.75) internal successors, (262), 8 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:45,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 121.0) internal successors, (1089), 9 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 11:43:45,639 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 121.0) internal successors, (1089), 9 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 11:43:45,639 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 344 flow. Second operand 8 states and 262 transitions. [2023-11-17 11:43:45,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 118 transitions, 891 flow [2023-11-17 11:43:45,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 118 transitions, 880 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-17 11:43:45,647 INFO L231 Difference]: Finished difference. Result has 72 places, 57 transitions, 395 flow [2023-11-17 11:43:45,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=395, PETRI_PLACES=72, PETRI_TRANSITIONS=57} [2023-11-17 11:43:45,649 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 31 predicate places. [2023-11-17 11:43:45,649 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 57 transitions, 395 flow [2023-11-17 11:43:45,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:45,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:43:45,649 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 11:43:45,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 11:43:45,650 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-17 11:43:45,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:43:45,650 INFO L85 PathProgramCache]: Analyzing trace with hash -879498199, now seen corresponding path program 1 times [2023-11-17 11:43:45,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:43:45,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233202402] [2023-11-17 11:43:45,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:43:45,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:43:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:43:45,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:43:45,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:43:45,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233202402] [2023-11-17 11:43:45,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233202402] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:43:45,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:43:45,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:43:45,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374266942] [2023-11-17 11:43:45,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:43:45,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:43:45,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:43:45,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:43:45,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:43:45,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 121 [2023-11-17 11:43:45,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 57 transitions, 395 flow. Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:45,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:43:45,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 121 [2023-11-17 11:43:45,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:43:46,081 INFO L124 PetriNetUnfolderBase]: 507/1128 cut-off events. [2023-11-17 11:43:46,081 INFO L125 PetriNetUnfolderBase]: For 2381/2381 co-relation queries the response was YES. [2023-11-17 11:43:46,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4434 conditions, 1128 events. 507/1128 cut-off events. For 2381/2381 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 6153 event pairs, 199 based on Foata normal form. 31/1159 useless extension candidates. Maximal degree in co-relation 4405. Up to 425 conditions per place. [2023-11-17 11:43:46,086 INFO L140 encePairwiseOnDemand]: 116/121 looper letters, 33 selfloop transitions, 6 changer transitions 78/117 dead transitions. [2023-11-17 11:43:46,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 117 transitions, 943 flow [2023-11-17 11:43:46,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 11:43:46,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 11:43:46,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 260 transitions. [2023-11-17 11:43:46,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26859504132231404 [2023-11-17 11:43:46,089 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 260 transitions. [2023-11-17 11:43:46,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 260 transitions. [2023-11-17 11:43:46,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:43:46,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 260 transitions. [2023-11-17 11:43:46,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:46,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 121.0) internal successors, (1089), 9 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 11:43:46,092 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 121.0) internal successors, (1089), 9 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 11:43:46,092 INFO L175 Difference]: Start difference. First operand has 72 places, 57 transitions, 395 flow. Second operand 8 states and 260 transitions. [2023-11-17 11:43:46,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 117 transitions, 943 flow [2023-11-17 11:43:46,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 117 transitions, 911 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-17 11:43:46,099 INFO L231 Difference]: Finished difference. Result has 73 places, 32 transitions, 194 flow [2023-11-17 11:43:46,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=194, PETRI_PLACES=73, PETRI_TRANSITIONS=32} [2023-11-17 11:43:46,102 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 32 predicate places. [2023-11-17 11:43:46,103 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 32 transitions, 194 flow [2023-11-17 11:43:46,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:46,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:43:46,103 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, 1] [2023-11-17 11:43:46,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 11:43:46,104 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 11:43:46,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:43:46,104 INFO L85 PathProgramCache]: Analyzing trace with hash -892639057, now seen corresponding path program 1 times [2023-11-17 11:43:46,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:43:46,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361426084] [2023-11-17 11:43:46,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:43:46,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:43:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:43:46,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:43:46,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:43:46,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361426084] [2023-11-17 11:43:46,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361426084] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:43:46,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:43:46,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:43:46,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341187405] [2023-11-17 11:43:46,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:43:46,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:43:46,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:43:46,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:43:46,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:43:46,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 121 [2023-11-17 11:43:46,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 32 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:46,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:43:46,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 121 [2023-11-17 11:43:46,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:43:46,395 INFO L124 PetriNetUnfolderBase]: 41/106 cut-off events. [2023-11-17 11:43:46,395 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2023-11-17 11:43:46,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 106 events. 41/106 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 303 event pairs, 15 based on Foata normal form. 10/116 useless extension candidates. Maximal degree in co-relation 341. Up to 72 conditions per place. [2023-11-17 11:43:46,396 INFO L140 encePairwiseOnDemand]: 114/121 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2023-11-17 11:43:46,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 23 transitions, 150 flow [2023-11-17 11:43:46,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:43:46,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:43:46,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2023-11-17 11:43:46,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25206611570247933 [2023-11-17 11:43:46,397 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 122 transitions. [2023-11-17 11:43:46,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 122 transitions. [2023-11-17 11:43:46,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:43:46,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 122 transitions. [2023-11-17 11:43:46,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:46,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:46,401 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:46,402 INFO L175 Difference]: Start difference. First operand has 73 places, 32 transitions, 194 flow. Second operand 4 states and 122 transitions. [2023-11-17 11:43:46,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 23 transitions, 150 flow [2023-11-17 11:43:46,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 23 transitions, 128 flow, removed 2 selfloop flow, removed 12 redundant places. [2023-11-17 11:43:46,403 INFO L231 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2023-11-17 11:43:46,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2023-11-17 11:43:46,404 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -2 predicate places. [2023-11-17 11:43:46,405 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 0 transitions, 0 flow [2023-11-17 11:43:46,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:43:46,409 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (8 of 9 remaining) [2023-11-17 11:43:46,409 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2023-11-17 11:43:46,409 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2023-11-17 11:43:46,409 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2023-11-17 11:43:46,409 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2023-11-17 11:43:46,410 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 9 remaining) [2023-11-17 11:43:46,410 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 9 remaining) [2023-11-17 11:43:46,410 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2023-11-17 11:43:46,410 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2023-11-17 11:43:46,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 11:43:46,410 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:43:46,415 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:43:46,415 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:43:46,421 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:43:46 BasicIcfg [2023-11-17 11:43:46,421 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:43:46,422 INFO L158 Benchmark]: Toolchain (without parser) took 10097.24ms. Allocated memory was 205.5MB in the beginning and 439.4MB in the end (delta: 233.8MB). Free memory was 157.8MB in the beginning and 369.6MB in the end (delta: -211.8MB). Peak memory consumption was 23.3MB. Max. memory is 8.0GB. [2023-11-17 11:43:46,422 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 205.5MB. Free memory is still 160.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:43:46,422 INFO L158 Benchmark]: CACSL2BoogieTranslator took 532.03ms. Allocated memory is still 205.5MB. Free memory was 157.4MB in the beginning and 137.5MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-17 11:43:46,423 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.12ms. Allocated memory is still 205.5MB. Free memory was 137.2MB in the beginning and 135.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:43:46,423 INFO L158 Benchmark]: Boogie Preprocessor took 49.02ms. Allocated memory is still 205.5MB. Free memory was 135.1MB in the beginning and 133.3MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 11:43:46,423 INFO L158 Benchmark]: RCFGBuilder took 774.13ms. Allocated memory was 205.5MB in the beginning and 320.9MB in the end (delta: 115.3MB). Free memory was 133.3MB in the beginning and 270.3MB in the end (delta: -137.0MB). Peak memory consumption was 24.5MB. Max. memory is 8.0GB. [2023-11-17 11:43:46,423 INFO L158 Benchmark]: TraceAbstraction took 8665.13ms. Allocated memory was 320.9MB in the beginning and 439.4MB in the end (delta: 118.5MB). Free memory was 269.8MB in the beginning and 369.6MB in the end (delta: -99.8MB). Peak memory consumption was 18.7MB. Max. memory is 8.0GB. [2023-11-17 11:43:46,425 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 205.5MB. Free memory is still 160.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 532.03ms. Allocated memory is still 205.5MB. Free memory was 157.4MB in the beginning and 137.5MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 71.12ms. Allocated memory is still 205.5MB. Free memory was 137.2MB in the beginning and 135.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 49.02ms. Allocated memory is still 205.5MB. Free memory was 135.1MB in the beginning and 133.3MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 774.13ms. Allocated memory was 205.5MB in the beginning and 320.9MB in the end (delta: 115.3MB). Free memory was 133.3MB in the beginning and 270.3MB in the end (delta: -137.0MB). Peak memory consumption was 24.5MB. Max. memory is 8.0GB. * TraceAbstraction took 8665.13ms. Allocated memory was 320.9MB in the beginning and 439.4MB in the end (delta: 118.5MB). Free memory was 269.8MB in the beginning and 369.6MB in the end (delta: -99.8MB). Peak memory consumption was 18.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 70 PlacesBefore, 41 PlacesAfterwards, 65 TransitionsBefore, 33 TransitionsAfterwards, 2736 CoEnabledTransitionPairs, 5 FixpointIterations, 0 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 3 ChoiceCompositions, 53 TotalNumberOfCompositions, 7903 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3255, independent: 3041, independent conditional: 0, independent unconditional: 3041, dependent: 214, dependent conditional: 0, dependent unconditional: 214, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1952, independent: 1871, independent conditional: 0, independent unconditional: 1871, dependent: 81, dependent conditional: 0, dependent unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1952, independent: 1786, independent conditional: 0, independent unconditional: 1786, dependent: 166, dependent conditional: 0, dependent unconditional: 166, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 166, independent: 85, independent conditional: 0, independent unconditional: 85, dependent: 81, dependent conditional: 0, dependent unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 385, independent: 144, independent conditional: 0, independent unconditional: 144, dependent: 241, dependent conditional: 0, dependent unconditional: 241, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3255, independent: 1170, independent conditional: 0, independent unconditional: 1170, dependent: 133, dependent conditional: 0, dependent unconditional: 133, unknown: 1952, unknown conditional: 0, unknown unconditional: 1952] , Statistics on independence cache: Total cache size (in pairs): 224, Positive cache size: 189, Positive conditional cache size: 0, Positive unconditional cache size: 189, Negative cache size: 35, Negative conditional cache size: 0, Negative unconditional cache size: 35, 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, 107 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: 8.5s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 392 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 392 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1075 IncrementalHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 0 mSDtfsCounter, 1075 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=395occurred in iteration=7, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 116 ConstructedInterpolants, 0 QuantifiedInterpolants, 523 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-17 11:43:46,452 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...