/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 06:17:26,697 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 06:17:26,762 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-VariableLbe.epf [2023-08-24 06:17:26,765 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 06:17:26,766 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 06:17:26,788 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 06:17:26,789 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 06:17:26,789 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 06:17:26,790 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 06:17:26,792 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 06:17:26,792 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 06:17:26,793 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 06:17:26,793 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 06:17:26,794 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 06:17:26,794 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 06:17:26,794 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 06:17:26,794 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 06:17:26,794 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 06:17:26,794 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 06:17:26,794 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 06:17:26,795 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 06:17:26,795 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 06:17:26,795 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 06:17:26,796 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 06:17:26,796 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 06:17:26,796 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 06:17:26,796 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 06:17:26,796 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 06:17:26,796 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 06:17:26,797 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 06:17:26,797 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 06:17:26,797 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 06:17:26,797 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 06:17:26,798 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 06:17:26,798 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 06:17:26,798 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 06:17:27,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 06:17:27,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 06:17:27,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 06:17:27,028 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 06:17:27,029 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 06:17:27,030 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2023-08-24 06:17:27,905 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 06:17:28,113 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 06:17:28,114 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2023-08-24 06:17:28,126 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60538c1e8/0f58d5e2cbe442eda20b6ef5f1c32f62/FLAGf74fc052c [2023-08-24 06:17:28,135 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60538c1e8/0f58d5e2cbe442eda20b6ef5f1c32f62 [2023-08-24 06:17:28,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 06:17:28,137 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 06:17:28,138 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 06:17:28,138 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 06:17:28,139 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 06:17:28,140 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:17:28" (1/1) ... [2023-08-24 06:17:28,140 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54874b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:17:28, skipping insertion in model container [2023-08-24 06:17:28,140 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:17:28" (1/1) ... [2023-08-24 06:17:28,174 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 06:17:28,268 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i[1097,1110] [2023-08-24 06:17:28,404 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 06:17:28,415 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 06:17:28,425 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i[1097,1110] [2023-08-24 06:17:28,442 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-24 06:17:28,444 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-24 06:17:28,461 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 06:17:28,491 INFO L206 MainTranslator]: Completed translation [2023-08-24 06:17:28,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:17:28 WrapperNode [2023-08-24 06:17:28,492 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 06:17:28,493 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 06:17:28,493 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 06:17:28,493 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 06:17:28,497 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:17:28" (1/1) ... [2023-08-24 06:17:28,522 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:17:28" (1/1) ... [2023-08-24 06:17:28,545 INFO L138 Inliner]: procedures = 163, calls = 52, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 104 [2023-08-24 06:17:28,545 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 06:17:28,546 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 06:17:28,546 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 06:17:28,546 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 06:17:28,552 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:17:28" (1/1) ... [2023-08-24 06:17:28,552 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:17:28" (1/1) ... [2023-08-24 06:17:28,562 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:17:28" (1/1) ... [2023-08-24 06:17:28,563 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:17:28" (1/1) ... [2023-08-24 06:17:28,571 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:17:28" (1/1) ... [2023-08-24 06:17:28,572 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:17:28" (1/1) ... [2023-08-24 06:17:28,574 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:17:28" (1/1) ... [2023-08-24 06:17:28,574 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:17:28" (1/1) ... [2023-08-24 06:17:28,576 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 06:17:28,577 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 06:17:28,577 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 06:17:28,577 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 06:17:28,577 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:17:28" (1/1) ... [2023-08-24 06:17:28,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 06:17:28,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 06:17:28,610 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) [2023-08-24 06:17:28,630 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 [2023-08-24 06:17:28,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 06:17:28,640 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-24 06:17:28,640 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-24 06:17:28,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 06:17:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 06:17:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 06:17:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 06:17:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-24 06:17:28,641 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-24 06:17:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 06:17:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 06:17:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 06:17:28,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 06:17:28,642 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 06:17:28,763 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 06:17:28,765 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 06:17:28,987 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 06:17:28,993 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 06:17:28,993 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 06:17:28,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:17:28 BoogieIcfgContainer [2023-08-24 06:17:28,994 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 06:17:28,996 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 06:17:28,996 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 06:17:28,998 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 06:17:28,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 06:17:28" (1/3) ... [2023-08-24 06:17:28,998 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3854854a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:17:28, skipping insertion in model container [2023-08-24 06:17:28,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:17:28" (2/3) ... [2023-08-24 06:17:28,999 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3854854a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:17:28, skipping insertion in model container [2023-08-24 06:17:28,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:17:28" (3/3) ... [2023-08-24 06:17:28,999 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_27-multiple-protecting2_true.i [2023-08-24 06:17:29,010 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 06:17:29,010 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-24 06:17:29,010 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 06:17:29,079 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-24 06:17:29,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 147 transitions, 310 flow [2023-08-24 06:17:29,140 INFO L124 PetriNetUnfolderBase]: 4/145 cut-off events. [2023-08-24 06:17:29,140 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 06:17:29,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 145 events. 4/145 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 136 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 97. Up to 2 conditions per place. [2023-08-24 06:17:29,145 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 147 transitions, 310 flow [2023-08-24 06:17:29,147 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 127 transitions, 260 flow [2023-08-24 06:17:29,152 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:17:29,166 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 127 transitions, 260 flow [2023-08-24 06:17:29,171 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 127 transitions, 260 flow [2023-08-24 06:17:29,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 127 transitions, 260 flow [2023-08-24 06:17:29,203 INFO L124 PetriNetUnfolderBase]: 3/127 cut-off events. [2023-08-24 06:17:29,204 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 06:17:29,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 127 events. 3/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 129 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-08-24 06:17:29,209 INFO L119 LiptonReduction]: Number of co-enabled transitions 4248 [2023-08-24 06:17:32,302 INFO L134 LiptonReduction]: Checked pairs total: 10770 [2023-08-24 06:17:32,303 INFO L136 LiptonReduction]: Total number of compositions: 103 [2023-08-24 06:17:32,311 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 06:17:32,315 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=LoopsAndPotentialCycles, 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;@12042a04, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:17:32,315 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-24 06:17:32,318 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:17:32,318 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-24 06:17:32,318 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 06:17:32,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:17:32,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:17:32,319 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-24 06:17:32,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:17:32,322 INFO L85 PathProgramCache]: Analyzing trace with hash 246070809, now seen corresponding path program 1 times [2023-08-24 06:17:32,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:17:32,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477526135] [2023-08-24 06:17:32,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:17:32,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:17:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 06:17:32,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 06:17:32,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 06:17:32,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477526135] [2023-08-24 06:17:32,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477526135] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 06:17:32,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 06:17:32,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 06:17:32,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722039459] [2023-08-24 06:17:32,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 06:17:32,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 06:17:32,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 06:17:32,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 06:17:32,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 06:17:32,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 250 [2023-08-24 06:17:32,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:32,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 06:17:32,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 250 [2023-08-24 06:17:32,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 06:17:32,769 INFO L124 PetriNetUnfolderBase]: 1275/2314 cut-off events. [2023-08-24 06:17:32,769 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-24 06:17:32,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4394 conditions, 2314 events. 1275/2314 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 13566 event pairs, 495 based on Foata normal form. 21/2224 useless extension candidates. Maximal degree in co-relation 4384. Up to 1328 conditions per place. [2023-08-24 06:17:32,779 INFO L140 encePairwiseOnDemand]: 244/250 looper letters, 51 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-08-24 06:17:32,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 58 transitions, 231 flow [2023-08-24 06:17:32,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 06:17:32,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 06:17:32,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 439 transitions. [2023-08-24 06:17:32,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5853333333333334 [2023-08-24 06:17:32,788 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 439 transitions. [2023-08-24 06:17:32,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 439 transitions. [2023-08-24 06:17:32,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 06:17:32,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 439 transitions. [2023-08-24 06:17:32,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:32,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:32,796 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:32,797 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 84 flow. Second operand 3 states and 439 transitions. [2023-08-24 06:17:32,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 58 transitions, 231 flow [2023-08-24 06:17:32,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 58 transitions, 228 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 06:17:32,800 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 90 flow [2023-08-24 06:17:32,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2023-08-24 06:17:32,803 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places. [2023-08-24 06:17:32,804 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 90 flow [2023-08-24 06:17:32,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:32,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:17:32,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:17:32,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 06:17:32,804 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-24 06:17:32,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:17:32,805 INFO L85 PathProgramCache]: Analyzing trace with hash 389176039, now seen corresponding path program 1 times [2023-08-24 06:17:32,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:17:32,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297629427] [2023-08-24 06:17:32,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:17:32,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:17:32,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 06:17:32,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 06:17:32,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 06:17:32,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297629427] [2023-08-24 06:17:32,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297629427] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 06:17:32,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 06:17:32,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 06:17:32,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391678495] [2023-08-24 06:17:32,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 06:17:32,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 06:17:32,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 06:17:32,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 06:17:32,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 06:17:32,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 250 [2023-08-24 06:17:32,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:32,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 06:17:32,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 250 [2023-08-24 06:17:32,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 06:17:33,117 INFO L124 PetriNetUnfolderBase]: 731/1427 cut-off events. [2023-08-24 06:17:33,117 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-08-24 06:17:33,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3056 conditions, 1427 events. 731/1427 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 7300 event pairs, 224 based on Foata normal form. 171/1571 useless extension candidates. Maximal degree in co-relation 3045. Up to 1145 conditions per place. [2023-08-24 06:17:33,123 INFO L140 encePairwiseOnDemand]: 244/250 looper letters, 64 selfloop transitions, 6 changer transitions 0/70 dead transitions. [2023-08-24 06:17:33,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 70 transitions, 307 flow [2023-08-24 06:17:33,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 06:17:33,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 06:17:33,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 468 transitions. [2023-08-24 06:17:33,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.468 [2023-08-24 06:17:33,129 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 468 transitions. [2023-08-24 06:17:33,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 468 transitions. [2023-08-24 06:17:33,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 06:17:33,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 468 transitions. [2023-08-24 06:17:33,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:33,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:33,134 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:33,134 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 90 flow. Second operand 4 states and 468 transitions. [2023-08-24 06:17:33,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 70 transitions, 307 flow [2023-08-24 06:17:33,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 70 transitions, 301 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 06:17:33,137 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 115 flow [2023-08-24 06:17:33,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=115, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2023-08-24 06:17:33,138 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2023-08-24 06:17:33,138 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 115 flow [2023-08-24 06:17:33,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:33,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:17:33,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:17:33,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 06:17:33,141 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-24 06:17:33,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:17:33,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1307143034, now seen corresponding path program 1 times [2023-08-24 06:17:33,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:17:33,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966127468] [2023-08-24 06:17:33,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:17:33,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:17:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 06:17:33,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 06:17:33,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 06:17:33,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966127468] [2023-08-24 06:17:33,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966127468] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 06:17:33,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 06:17:33,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 06:17:33,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835639430] [2023-08-24 06:17:33,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 06:17:33,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 06:17:33,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 06:17:33,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 06:17:33,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 06:17:33,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 250 [2023-08-24 06:17:33,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:33,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 06:17:33,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 250 [2023-08-24 06:17:33,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 06:17:33,319 INFO L124 PetriNetUnfolderBase]: 460/1048 cut-off events. [2023-08-24 06:17:33,319 INFO L125 PetriNetUnfolderBase]: For 203/203 co-relation queries the response was YES. [2023-08-24 06:17:33,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2349 conditions, 1048 events. 460/1048 cut-off events. For 203/203 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5814 event pairs, 144 based on Foata normal form. 0/1032 useless extension candidates. Maximal degree in co-relation 2337. Up to 629 conditions per place. [2023-08-24 06:17:33,324 INFO L140 encePairwiseOnDemand]: 247/250 looper letters, 53 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-08-24 06:17:33,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 61 transitions, 283 flow [2023-08-24 06:17:33,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 06:17:33,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 06:17:33,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 441 transitions. [2023-08-24 06:17:33,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.588 [2023-08-24 06:17:33,326 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 441 transitions. [2023-08-24 06:17:33,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 441 transitions. [2023-08-24 06:17:33,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 06:17:33,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 441 transitions. [2023-08-24 06:17:33,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:33,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:33,328 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:33,329 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 115 flow. Second operand 3 states and 441 transitions. [2023-08-24 06:17:33,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 61 transitions, 283 flow [2023-08-24 06:17:33,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 61 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 06:17:33,331 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 122 flow [2023-08-24 06:17:33,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2023-08-24 06:17:33,332 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 4 predicate places. [2023-08-24 06:17:33,332 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 122 flow [2023-08-24 06:17:33,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:33,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:17:33,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:17:33,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 06:17:33,333 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-24 06:17:33,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:17:33,333 INFO L85 PathProgramCache]: Analyzing trace with hash -561844962, now seen corresponding path program 1 times [2023-08-24 06:17:33,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:17:33,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330027054] [2023-08-24 06:17:33,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:17:33,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:17:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 06:17:33,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 06:17:33,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 06:17:33,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330027054] [2023-08-24 06:17:33,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330027054] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 06:17:33,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 06:17:33,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 06:17:33,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380613852] [2023-08-24 06:17:33,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 06:17:33,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 06:17:33,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 06:17:33,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 06:17:33,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 06:17:33,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 250 [2023-08-24 06:17:33,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 130.25) internal successors, (521), 4 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:33,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 06:17:33,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 250 [2023-08-24 06:17:33,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 06:17:33,603 INFO L124 PetriNetUnfolderBase]: 424/969 cut-off events. [2023-08-24 06:17:33,603 INFO L125 PetriNetUnfolderBase]: For 255/255 co-relation queries the response was YES. [2023-08-24 06:17:33,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2295 conditions, 969 events. 424/969 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5287 event pairs, 325 based on Foata normal form. 33/997 useless extension candidates. Maximal degree in co-relation 2281. Up to 668 conditions per place. [2023-08-24 06:17:33,606 INFO L140 encePairwiseOnDemand]: 244/250 looper letters, 52 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2023-08-24 06:17:33,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 61 transitions, 287 flow [2023-08-24 06:17:33,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 06:17:33,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 06:17:33,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 564 transitions. [2023-08-24 06:17:33,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.564 [2023-08-24 06:17:33,607 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 564 transitions. [2023-08-24 06:17:33,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 564 transitions. [2023-08-24 06:17:33,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 06:17:33,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 564 transitions. [2023-08-24 06:17:33,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:33,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:33,610 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:33,610 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 122 flow. Second operand 4 states and 564 transitions. [2023-08-24 06:17:33,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 61 transitions, 287 flow [2023-08-24 06:17:33,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 61 transitions, 281 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 06:17:33,613 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 133 flow [2023-08-24 06:17:33,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2023-08-24 06:17:33,614 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 6 predicate places. [2023-08-24 06:17:33,614 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 133 flow [2023-08-24 06:17:33,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.25) internal successors, (521), 4 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:33,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:17:33,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:17:33,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 06:17:33,615 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-24 06:17:33,615 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:17:33,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1224570049, now seen corresponding path program 1 times [2023-08-24 06:17:33,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:17:33,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463499454] [2023-08-24 06:17:33,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:17:33,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:17:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 06:17:33,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 06:17:33,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 06:17:33,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463499454] [2023-08-24 06:17:33,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463499454] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 06:17:33,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 06:17:33,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 06:17:33,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381755976] [2023-08-24 06:17:33,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 06:17:33,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 06:17:33,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 06:17:33,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 06:17:33,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 06:17:33,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 250 [2023-08-24 06:17:33,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:33,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 06:17:33,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 250 [2023-08-24 06:17:33,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 06:17:33,804 INFO L124 PetriNetUnfolderBase]: 517/1264 cut-off events. [2023-08-24 06:17:33,804 INFO L125 PetriNetUnfolderBase]: For 407/407 co-relation queries the response was YES. [2023-08-24 06:17:33,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3301 conditions, 1264 events. 517/1264 cut-off events. For 407/407 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 7393 event pairs, 238 based on Foata normal form. 219/1483 useless extension candidates. Maximal degree in co-relation 3286. Up to 660 conditions per place. [2023-08-24 06:17:33,808 INFO L140 encePairwiseOnDemand]: 232/250 looper letters, 49 selfloop transitions, 19 changer transitions 1/69 dead transitions. [2023-08-24 06:17:33,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 69 transitions, 372 flow [2023-08-24 06:17:33,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 06:17:33,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 06:17:33,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2023-08-24 06:17:33,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.516 [2023-08-24 06:17:33,809 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 387 transitions. [2023-08-24 06:17:33,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 387 transitions. [2023-08-24 06:17:33,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 06:17:33,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 387 transitions. [2023-08-24 06:17:33,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:33,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:33,812 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:33,812 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 133 flow. Second operand 3 states and 387 transitions. [2023-08-24 06:17:33,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 69 transitions, 372 flow [2023-08-24 06:17:33,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 69 transitions, 347 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-24 06:17:33,814 INFO L231 Difference]: Finished difference. Result has 50 places, 51 transitions, 233 flow [2023-08-24 06:17:33,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=233, PETRI_PLACES=50, PETRI_TRANSITIONS=51} [2023-08-24 06:17:33,815 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 5 predicate places. [2023-08-24 06:17:33,815 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 51 transitions, 233 flow [2023-08-24 06:17:33,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:33,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:17:33,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:17:33,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 06:17:33,816 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-24 06:17:33,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:17:33,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1004454965, now seen corresponding path program 1 times [2023-08-24 06:17:33,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:17:33,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138808620] [2023-08-24 06:17:33,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:17:33,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:17:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 06:17:33,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 06:17:33,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 06:17:33,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138808620] [2023-08-24 06:17:33,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138808620] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 06:17:33,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 06:17:33,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 06:17:33,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449738873] [2023-08-24 06:17:33,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 06:17:33,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 06:17:33,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 06:17:33,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 06:17:33,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-24 06:17:33,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 250 [2023-08-24 06:17:33,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 51 transitions, 233 flow. Second operand has 5 states, 5 states have (on average 96.6) internal successors, (483), 5 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:33,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 06:17:33,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 250 [2023-08-24 06:17:33,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 06:17:34,025 INFO L124 PetriNetUnfolderBase]: 221/625 cut-off events. [2023-08-24 06:17:34,026 INFO L125 PetriNetUnfolderBase]: For 369/369 co-relation queries the response was YES. [2023-08-24 06:17:34,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2020 conditions, 625 events. 221/625 cut-off events. For 369/369 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3115 event pairs, 46 based on Foata normal form. 55/680 useless extension candidates. Maximal degree in co-relation 2006. Up to 587 conditions per place. [2023-08-24 06:17:34,028 INFO L140 encePairwiseOnDemand]: 246/250 looper letters, 45 selfloop transitions, 6 changer transitions 9/60 dead transitions. [2023-08-24 06:17:34,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 60 transitions, 388 flow [2023-08-24 06:17:34,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 06:17:34,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 06:17:34,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 418 transitions. [2023-08-24 06:17:34,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.418 [2023-08-24 06:17:34,029 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 418 transitions. [2023-08-24 06:17:34,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 418 transitions. [2023-08-24 06:17:34,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 06:17:34,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 418 transitions. [2023-08-24 06:17:34,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:34,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:34,031 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:34,032 INFO L175 Difference]: Start difference. First operand has 50 places, 51 transitions, 233 flow. Second operand 4 states and 418 transitions. [2023-08-24 06:17:34,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 60 transitions, 388 flow [2023-08-24 06:17:34,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 60 transitions, 362 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 06:17:34,033 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 173 flow [2023-08-24 06:17:34,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=173, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2023-08-24 06:17:34,034 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 3 predicate places. [2023-08-24 06:17:34,034 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 173 flow [2023-08-24 06:17:34,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.6) internal successors, (483), 5 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:34,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:17:34,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:17:34,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 06:17:34,035 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-24 06:17:34,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:17:34,035 INFO L85 PathProgramCache]: Analyzing trace with hash -133129303, now seen corresponding path program 1 times [2023-08-24 06:17:34,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:17:34,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235086484] [2023-08-24 06:17:34,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:17:34,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:17:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 06:17:34,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 06:17:34,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 06:17:34,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235086484] [2023-08-24 06:17:34,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235086484] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 06:17:34,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 06:17:34,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 06:17:34,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220990775] [2023-08-24 06:17:34,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 06:17:34,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 06:17:34,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 06:17:34,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 06:17:34,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-24 06:17:34,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 250 [2023-08-24 06:17:34,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 96.0) internal successors, (576), 6 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:34,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 06:17:34,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 250 [2023-08-24 06:17:34,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 06:17:34,247 INFO L124 PetriNetUnfolderBase]: 98/319 cut-off events. [2023-08-24 06:17:34,247 INFO L125 PetriNetUnfolderBase]: For 217/217 co-relation queries the response was YES. [2023-08-24 06:17:34,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 988 conditions, 319 events. 98/319 cut-off events. For 217/217 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1410 event pairs, 35 based on Foata normal form. 28/347 useless extension candidates. Maximal degree in co-relation 974. Up to 211 conditions per place. [2023-08-24 06:17:34,249 INFO L140 encePairwiseOnDemand]: 246/250 looper letters, 46 selfloop transitions, 6 changer transitions 0/52 dead transitions. [2023-08-24 06:17:34,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 52 transitions, 330 flow [2023-08-24 06:17:34,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 06:17:34,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 06:17:34,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 416 transitions. [2023-08-24 06:17:34,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.416 [2023-08-24 06:17:34,250 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 416 transitions. [2023-08-24 06:17:34,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 416 transitions. [2023-08-24 06:17:34,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 06:17:34,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 416 transitions. [2023-08-24 06:17:34,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:34,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:34,253 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:34,253 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 173 flow. Second operand 4 states and 416 transitions. [2023-08-24 06:17:34,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 52 transitions, 330 flow [2023-08-24 06:17:34,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 52 transitions, 311 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 06:17:34,254 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 168 flow [2023-08-24 06:17:34,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2023-08-24 06:17:34,255 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -1 predicate places. [2023-08-24 06:17:34,255 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 168 flow [2023-08-24 06:17:34,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.0) internal successors, (576), 6 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:34,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:17:34,255 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] [2023-08-24 06:17:34,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 06:17:34,256 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-24 06:17:34,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:17:34,256 INFO L85 PathProgramCache]: Analyzing trace with hash -238774002, now seen corresponding path program 1 times [2023-08-24 06:17:34,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:17:34,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075255458] [2023-08-24 06:17:34,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:17:34,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:17:34,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 06:17:34,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 06:17:34,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 06:17:34,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075255458] [2023-08-24 06:17:34,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075255458] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 06:17:34,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 06:17:34,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 06:17:34,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723218024] [2023-08-24 06:17:34,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 06:17:34,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 06:17:34,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 06:17:34,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 06:17:34,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 06:17:34,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 250 [2023-08-24 06:17:34,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:34,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 06:17:34,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 250 [2023-08-24 06:17:34,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 06:17:34,396 INFO L124 PetriNetUnfolderBase]: 84/299 cut-off events. [2023-08-24 06:17:34,396 INFO L125 PetriNetUnfolderBase]: For 172/174 co-relation queries the response was YES. [2023-08-24 06:17:34,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 299 events. 84/299 cut-off events. For 172/174 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1325 event pairs, 49 based on Foata normal form. 4/301 useless extension candidates. Maximal degree in co-relation 854. Up to 203 conditions per place. [2023-08-24 06:17:34,397 INFO L140 encePairwiseOnDemand]: 246/250 looper letters, 0 selfloop transitions, 0 changer transitions 50/50 dead transitions. [2023-08-24 06:17:34,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 50 transitions, 298 flow [2023-08-24 06:17:34,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 06:17:34,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 06:17:34,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 552 transitions. [2023-08-24 06:17:34,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.552 [2023-08-24 06:17:34,399 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 552 transitions. [2023-08-24 06:17:34,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 552 transitions. [2023-08-24 06:17:34,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 06:17:34,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 552 transitions. [2023-08-24 06:17:34,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:34,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:34,401 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:34,401 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 168 flow. Second operand 4 states and 552 transitions. [2023-08-24 06:17:34,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 50 transitions, 298 flow [2023-08-24 06:17:34,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 50 transitions, 290 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 06:17:34,402 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2023-08-24 06:17:34,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2023-08-24 06:17:34,403 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -2 predicate places. [2023-08-24 06:17:34,403 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2023-08-24 06:17:34,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:17:34,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-08-24 06:17:34,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-24 06:17:34,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-24 06:17:34,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-08-24 06:17:34,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-24 06:17:34,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2023-08-24 06:17:34,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 06:17:34,406 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:17:34,408 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 06:17:34,408 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 06:17:34,410 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 06:17:34 BasicIcfg [2023-08-24 06:17:34,410 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 06:17:34,411 INFO L158 Benchmark]: Toolchain (without parser) took 6273.78ms. Allocated memory was 335.5MB in the beginning and 532.7MB in the end (delta: 197.1MB). Free memory was 310.4MB in the beginning and 415.4MB in the end (delta: -105.0MB). Peak memory consumption was 95.3MB. Max. memory is 16.0GB. [2023-08-24 06:17:34,411 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 335.5MB. Free memory was 313.0MB in the beginning and 312.9MB in the end (delta: 86.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 06:17:34,411 INFO L158 Benchmark]: CACSL2BoogieTranslator took 354.48ms. Allocated memory is still 335.5MB. Free memory was 309.9MB in the beginning and 290.0MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 06:17:34,411 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.52ms. Allocated memory is still 335.5MB. Free memory was 290.0MB in the beginning and 287.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 06:17:34,412 INFO L158 Benchmark]: Boogie Preprocessor took 30.17ms. Allocated memory is still 335.5MB. Free memory was 287.3MB in the beginning and 285.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 06:17:34,412 INFO L158 Benchmark]: RCFGBuilder took 417.70ms. Allocated memory is still 335.5MB. Free memory was 285.8MB in the beginning and 268.5MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-24 06:17:34,412 INFO L158 Benchmark]: TraceAbstraction took 5414.53ms. Allocated memory was 335.5MB in the beginning and 532.7MB in the end (delta: 197.1MB). Free memory was 267.9MB in the beginning and 415.4MB in the end (delta: -147.4MB). Peak memory consumption was 51.3MB. Max. memory is 16.0GB. [2023-08-24 06:17:34,413 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 335.5MB. Free memory was 313.0MB in the beginning and 312.9MB in the end (delta: 86.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 354.48ms. Allocated memory is still 335.5MB. Free memory was 309.9MB in the beginning and 290.0MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 52.52ms. Allocated memory is still 335.5MB. Free memory was 290.0MB in the beginning and 287.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 30.17ms. Allocated memory is still 335.5MB. Free memory was 287.3MB in the beginning and 285.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 417.70ms. Allocated memory is still 335.5MB. Free memory was 285.8MB in the beginning and 268.5MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 5414.53ms. Allocated memory was 335.5MB in the beginning and 532.7MB in the end (delta: 197.1MB). Free memory was 267.9MB in the beginning and 415.4MB in the end (delta: -147.4MB). Peak memory consumption was 51.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 131 PlacesBefore, 45 PlacesAfterwards, 127 TransitionsBefore, 39 TransitionsAfterwards, 4248 CoEnabledTransitionPairs, 6 FixpointIterations, 36 TrivialSequentialCompositions, 61 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 103 TotalNumberOfCompositions, 10770 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3440, independent: 3105, independent conditional: 0, independent unconditional: 3105, dependent: 335, dependent conditional: 0, dependent unconditional: 335, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2056, independent: 2001, independent conditional: 0, independent unconditional: 2001, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3440, independent: 1104, independent conditional: 0, independent unconditional: 1104, dependent: 280, dependent conditional: 0, dependent unconditional: 280, unknown: 2056, unknown conditional: 0, unknown unconditional: 2056] , Statistics on independence cache: Total cache size (in pairs): 124, Positive cache size: 92, Positive conditional cache size: 0, Positive unconditional cache size: 92, Negative cache size: 32, Negative conditional cache size: 0, Negative unconditional cache size: 32, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 184 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.3s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 202 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 202 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 71 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 618 IncrementalHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 71 mSolverCounterUnsat, 1 mSDtfsCounter, 618 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=233occurred in iteration=5, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 113 ConstructedInterpolants, 0 QuantifiedInterpolants, 632 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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! [2023-08-24 06:17:34,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...