/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 PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 12:32:27,719 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 12:32:27,777 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 12:32:27,781 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 12:32:27,782 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 12:32:27,821 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 12:32:27,821 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 12:32:27,822 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 12:32:27,822 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 12:32:27,823 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 12:32:27,823 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 12:32:27,823 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 12:32:27,824 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 12:32:27,824 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 12:32:27,824 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 12:32:27,825 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 12:32:27,825 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 12:32:27,825 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 12:32:27,826 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 12:32:27,826 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 12:32:27,826 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 12:32:27,830 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 12:32:27,830 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 12:32:27,831 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 12:32:27,832 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 12:32:27,833 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 12:32:27,833 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 12:32:27,833 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 12:32:27,833 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 12:32:27,834 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 12:32:27,834 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 12:32:27,834 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 12:32:27,834 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 12:32:27,835 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 12:32:27,835 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 12:32:27,835 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 12:32:28,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 12:32:28,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 12:32:28,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 12:32:28,130 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 12:32:28,130 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 12:32:28,132 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i [2023-08-24 12:32:29,263 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 12:32:29,508 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 12:32:29,509 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i [2023-08-24 12:32:29,528 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bceb83cc/0e8ef987f87e49039297ce5267534bea/FLAG837001538 [2023-08-24 12:32:29,549 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bceb83cc/0e8ef987f87e49039297ce5267534bea [2023-08-24 12:32:29,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 12:32:29,555 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 12:32:29,557 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 12:32:29,558 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 12:32:29,561 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 12:32:29,562 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 12:32:29" (1/1) ... [2023-08-24 12:32:29,563 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34837f7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:29, skipping insertion in model container [2023-08-24 12:32:29,563 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 12:32:29" (1/1) ... [2023-08-24 12:32:29,611 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 12:32:29,774 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i[1103,1116] [2023-08-24 12:32:29,930 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 12:32:29,945 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 12:32:29,958 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i[1103,1116] [2023-08-24 12:32:29,977 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-24 12:32:29,979 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-24 12:32:29,997 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 12:32:30,038 INFO L206 MainTranslator]: Completed translation [2023-08-24 12:32:30,038 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:30 WrapperNode [2023-08-24 12:32:30,039 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 12:32:30,040 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 12:32:30,040 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 12:32:30,040 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 12:32:30,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:30" (1/1) ... [2023-08-24 12:32:30,075 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:30" (1/1) ... [2023-08-24 12:32:30,094 INFO L138 Inliner]: procedures = 162, calls = 40, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 77 [2023-08-24 12:32:30,094 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 12:32:30,095 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 12:32:30,095 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 12:32:30,095 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 12:32:30,103 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:30" (1/1) ... [2023-08-24 12:32:30,104 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:30" (1/1) ... [2023-08-24 12:32:30,111 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:30" (1/1) ... [2023-08-24 12:32:30,111 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:30" (1/1) ... [2023-08-24 12:32:30,117 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:30" (1/1) ... [2023-08-24 12:32:30,119 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:30" (1/1) ... [2023-08-24 12:32:30,120 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:30" (1/1) ... [2023-08-24 12:32:30,121 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:30" (1/1) ... [2023-08-24 12:32:30,123 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 12:32:30,124 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 12:32:30,124 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 12:32:30,124 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 12:32:30,125 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:30" (1/1) ... [2023-08-24 12:32:30,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 12:32:30,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 12:32:30,153 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 12:32:30,178 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 12:32:30,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 12:32:30,189 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-24 12:32:30,189 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-24 12:32:30,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 12:32:30,190 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 12:32:30,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 12:32:30,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 12:32:30,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 12:32:30,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 12:32:30,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 12:32:30,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 12:32:30,192 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 12:32:30,304 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 12:32:30,306 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 12:32:30,463 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 12:32:30,469 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 12:32:30,470 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 12:32:30,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 12:32:30 BoogieIcfgContainer [2023-08-24 12:32:30,471 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 12:32:30,473 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 12:32:30,473 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 12:32:30,476 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 12:32:30,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 12:32:29" (1/3) ... [2023-08-24 12:32:30,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c746a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 12:32:30, skipping insertion in model container [2023-08-24 12:32:30,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:30" (2/3) ... [2023-08-24 12:32:30,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c746a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 12:32:30, skipping insertion in model container [2023-08-24 12:32:30,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 12:32:30" (3/3) ... [2023-08-24 12:32:30,481 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_29-multiple-protecting2-vesal_true.i [2023-08-24 12:32:30,496 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 12:32:30,496 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-24 12:32:30,496 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 12:32:30,575 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-24 12:32:30,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 101 transitions, 210 flow [2023-08-24 12:32:30,691 INFO L124 PetriNetUnfolderBase]: 3/100 cut-off events. [2023-08-24 12:32:30,692 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-24 12:32:30,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 100 events. 3/100 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2023-08-24 12:32:30,698 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 101 transitions, 210 flow [2023-08-24 12:32:30,716 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 86 transitions, 175 flow [2023-08-24 12:32:30,719 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 12:32:30,731 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 86 transitions, 175 flow [2023-08-24 12:32:30,735 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 86 transitions, 175 flow [2023-08-24 12:32:30,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 86 transitions, 175 flow [2023-08-24 12:32:30,767 INFO L124 PetriNetUnfolderBase]: 2/86 cut-off events. [2023-08-24 12:32:30,767 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 12:32:30,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 86 events. 2/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-08-24 12:32:30,769 INFO L119 LiptonReduction]: Number of co-enabled transitions 1152 [2023-08-24 12:32:33,707 INFO L134 LiptonReduction]: Checked pairs total: 2644 [2023-08-24 12:32:33,707 INFO L136 LiptonReduction]: Total number of compositions: 73 [2023-08-24 12:32:33,718 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 12:32:33,724 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;@39d8780f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 12:32:33,724 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 12:32:33,727 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 12:32:33,727 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-08-24 12:32:33,727 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 12:32:33,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 12:32:33,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-24 12:32:33,728 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-24 12:32:33,732 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 12:32:33,732 INFO L85 PathProgramCache]: Analyzing trace with hash 322237949, now seen corresponding path program 1 times [2023-08-24 12:32:33,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 12:32:33,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598780296] [2023-08-24 12:32:33,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 12:32:33,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 12:32:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 12:32:33,923 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 12:32:33,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 12:32:33,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598780296] [2023-08-24 12:32:33,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598780296] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 12:32:33,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 12:32:33,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 12:32:33,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091752565] [2023-08-24 12:32:33,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 12:32:33,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-24 12:32:33,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 12:32:33,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-24 12:32:33,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-24 12:32:33,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 174 [2023-08-24 12:32:33,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 21 transitions, 45 flow. Second operand has 2 states, 2 states have (on average 95.5) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 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 12:32:33,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 12:32:33,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 174 [2023-08-24 12:32:33,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 12:32:34,029 INFO L124 PetriNetUnfolderBase]: 63/160 cut-off events. [2023-08-24 12:32:34,029 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 12:32:34,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 160 events. 63/160 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 545 event pairs, 63 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 300. Up to 145 conditions per place. [2023-08-24 12:32:34,031 INFO L140 encePairwiseOnDemand]: 173/174 looper letters, 18 selfloop transitions, 0 changer transitions 0/20 dead transitions. [2023-08-24 12:32:34,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 20 transitions, 79 flow [2023-08-24 12:32:34,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-24 12:32:34,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-24 12:32:34,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 205 transitions. [2023-08-24 12:32:34,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5890804597701149 [2023-08-24 12:32:34,043 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 205 transitions. [2023-08-24 12:32:34,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 205 transitions. [2023-08-24 12:32:34,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 12:32:34,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 205 transitions. [2023-08-24 12:32:34,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 102.5) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:34,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 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 12:32:34,052 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 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 12:32:34,054 INFO L175 Difference]: Start difference. First operand has 24 places, 21 transitions, 45 flow. Second operand 2 states and 205 transitions. [2023-08-24 12:32:34,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 20 transitions, 79 flow [2023-08-24 12:32:34,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 20 transitions, 78 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 12:32:34,057 INFO L231 Difference]: Finished difference. Result has 24 places, 20 transitions, 42 flow [2023-08-24 12:32:34,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=42, PETRI_PLACES=24, PETRI_TRANSITIONS=20} [2023-08-24 12:32:34,061 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 0 predicate places. [2023-08-24 12:32:34,061 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 20 transitions, 42 flow [2023-08-24 12:32:34,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 95.5) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 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 12:32:34,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 12:32:34,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-24 12:32:34,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 12:32:34,062 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-24 12:32:34,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 12:32:34,063 INFO L85 PathProgramCache]: Analyzing trace with hash 322236493, now seen corresponding path program 1 times [2023-08-24 12:32:34,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 12:32:34,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478184180] [2023-08-24 12:32:34,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 12:32:34,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 12:32:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 12:32:34,194 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 12:32:34,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 12:32:34,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478184180] [2023-08-24 12:32:34,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478184180] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 12:32:34,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 12:32:34,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 12:32:34,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365688861] [2023-08-24 12:32:34,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 12:32:34,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 12:32:34,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 12:32:34,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 12:32:34,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 12:32:34,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 174 [2023-08-24 12:32:34,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:34,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 12:32:34,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 174 [2023-08-24 12:32:34,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 12:32:34,246 INFO L124 PetriNetUnfolderBase]: 57/147 cut-off events. [2023-08-24 12:32:34,246 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 12:32:34,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 147 events. 57/147 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 493 event pairs, 41 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 281. Up to 95 conditions per place. [2023-08-24 12:32:34,247 INFO L140 encePairwiseOnDemand]: 171/174 looper letters, 24 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-08-24 12:32:34,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 28 transitions, 110 flow [2023-08-24 12:32:34,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 12:32:34,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 12:32:34,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2023-08-24 12:32:34,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5402298850574713 [2023-08-24 12:32:34,250 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2023-08-24 12:32:34,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2023-08-24 12:32:34,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 12:32:34,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2023-08-24 12:32:34,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:34,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 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 12:32:34,254 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 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 12:32:34,254 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 42 flow. Second operand 3 states and 282 transitions. [2023-08-24 12:32:34,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 28 transitions, 110 flow [2023-08-24 12:32:34,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 28 transitions, 110 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 12:32:34,255 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 50 flow [2023-08-24 12:32:34,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2023-08-24 12:32:34,256 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 3 predicate places. [2023-08-24 12:32:34,256 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 50 flow [2023-08-24 12:32:34,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:34,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 12:32:34,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-24 12:32:34,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 12:32:34,257 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-24 12:32:34,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 12:32:34,257 INFO L85 PathProgramCache]: Analyzing trace with hash 431620293, now seen corresponding path program 1 times [2023-08-24 12:32:34,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 12:32:34,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499970212] [2023-08-24 12:32:34,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 12:32:34,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 12:32:34,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 12:32:34,334 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 12:32:34,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 12:32:34,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499970212] [2023-08-24 12:32:34,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499970212] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 12:32:34,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 12:32:34,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 12:32:34,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281999518] [2023-08-24 12:32:34,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 12:32:34,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 12:32:34,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 12:32:34,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 12:32:34,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 12:32:34,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 174 [2023-08-24 12:32:34,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 50 flow. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 0 states have call successors, (0), 0 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 12:32:34,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 12:32:34,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 174 [2023-08-24 12:32:34,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 12:32:34,419 INFO L124 PetriNetUnfolderBase]: 58/149 cut-off events. [2023-08-24 12:32:34,420 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-24 12:32:34,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 149 events. 58/149 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 504 event pairs, 16 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 309. Up to 64 conditions per place. [2023-08-24 12:32:34,426 INFO L140 encePairwiseOnDemand]: 167/174 looper letters, 26 selfloop transitions, 8 changer transitions 0/36 dead transitions. [2023-08-24 12:32:34,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 36 transitions, 153 flow [2023-08-24 12:32:34,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 12:32:34,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 12:32:34,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 401 transitions. [2023-08-24 12:32:34,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46091954022988507 [2023-08-24 12:32:34,431 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 401 transitions. [2023-08-24 12:32:34,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 401 transitions. [2023-08-24 12:32:34,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 12:32:34,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 401 transitions. [2023-08-24 12:32:34,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.2) internal successors, (401), 5 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:34,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 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 12:32:34,436 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 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 12:32:34,436 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 50 flow. Second operand 5 states and 401 transitions. [2023-08-24 12:32:34,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 36 transitions, 153 flow [2023-08-24 12:32:34,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 36 transitions, 147 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 12:32:34,438 INFO L231 Difference]: Finished difference. Result has 33 places, 24 transitions, 94 flow [2023-08-24 12:32:34,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=94, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2023-08-24 12:32:34,439 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 9 predicate places. [2023-08-24 12:32:34,439 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 94 flow [2023-08-24 12:32:34,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 0 states have call successors, (0), 0 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 12:32:34,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 12:32:34,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 12:32:34,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 12:32:34,440 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-24 12:32:34,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 12:32:34,441 INFO L85 PathProgramCache]: Analyzing trace with hash -2003989917, now seen corresponding path program 1 times [2023-08-24 12:32:34,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 12:32:34,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238883489] [2023-08-24 12:32:34,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 12:32:34,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 12:32:34,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 12:32:34,529 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 12:32:34,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 12:32:34,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238883489] [2023-08-24 12:32:34,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238883489] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 12:32:34,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 12:32:34,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 12:32:34,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072411674] [2023-08-24 12:32:34,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 12:32:34,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 12:32:34,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 12:32:34,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 12:32:34,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 12:32:34,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 174 [2023-08-24 12:32:34,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 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 12:32:34,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 12:32:34,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 174 [2023-08-24 12:32:34,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 12:32:34,580 INFO L124 PetriNetUnfolderBase]: 31/105 cut-off events. [2023-08-24 12:32:34,581 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-08-24 12:32:34,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 105 events. 31/105 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 325 event pairs, 10 based on Foata normal form. 19/124 useless extension candidates. Maximal degree in co-relation 273. Up to 59 conditions per place. [2023-08-24 12:32:34,582 INFO L140 encePairwiseOnDemand]: 166/174 looper letters, 25 selfloop transitions, 9 changer transitions 0/34 dead transitions. [2023-08-24 12:32:34,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 34 transitions, 202 flow [2023-08-24 12:32:34,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 12:32:34,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 12:32:34,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 253 transitions. [2023-08-24 12:32:34,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4846743295019157 [2023-08-24 12:32:34,583 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 253 transitions. [2023-08-24 12:32:34,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 253 transitions. [2023-08-24 12:32:34,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 12:32:34,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 253 transitions. [2023-08-24 12:32:34,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 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 12:32:34,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 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 12:32:34,586 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 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 12:32:34,586 INFO L175 Difference]: Start difference. First operand has 33 places, 24 transitions, 94 flow. Second operand 3 states and 253 transitions. [2023-08-24 12:32:34,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 34 transitions, 202 flow [2023-08-24 12:32:34,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 34 transitions, 193 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-24 12:32:34,588 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 127 flow [2023-08-24 12:32:34,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2023-08-24 12:32:34,589 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 11 predicate places. [2023-08-24 12:32:34,589 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 127 flow [2023-08-24 12:32:34,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 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 12:32:34,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 12:32:34,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 12:32:34,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 12:32:34,590 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-24 12:32:34,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 12:32:34,591 INFO L85 PathProgramCache]: Analyzing trace with hash -730609688, now seen corresponding path program 1 times [2023-08-24 12:32:34,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 12:32:34,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605944419] [2023-08-24 12:32:34,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 12:32:34,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 12:32:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 12:32:34,676 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 12:32:34,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 12:32:34,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605944419] [2023-08-24 12:32:34,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605944419] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 12:32:34,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 12:32:34,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 12:32:34,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155007307] [2023-08-24 12:32:34,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 12:32:34,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 12:32:34,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 12:32:34,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 12:32:34,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 12:32:34,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 174 [2023-08-24 12:32:34,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 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 12:32:34,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 12:32:34,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 174 [2023-08-24 12:32:34,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 12:32:34,716 INFO L124 PetriNetUnfolderBase]: 27/99 cut-off events. [2023-08-24 12:32:34,717 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2023-08-24 12:32:34,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 99 events. 27/99 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 289 event pairs, 13 based on Foata normal form. 2/101 useless extension candidates. Maximal degree in co-relation 303. Up to 64 conditions per place. [2023-08-24 12:32:34,718 INFO L140 encePairwiseOnDemand]: 171/174 looper letters, 24 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2023-08-24 12:32:34,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 29 transitions, 186 flow [2023-08-24 12:32:34,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 12:32:34,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 12:32:34,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2023-08-24 12:32:34,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5363984674329502 [2023-08-24 12:32:34,720 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2023-08-24 12:32:34,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2023-08-24 12:32:34,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 12:32:34,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2023-08-24 12:32:34,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:34,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 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 12:32:34,722 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 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 12:32:34,723 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 127 flow. Second operand 3 states and 280 transitions. [2023-08-24 12:32:34,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 29 transitions, 186 flow [2023-08-24 12:32:34,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 29 transitions, 176 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 12:32:34,725 INFO L231 Difference]: Finished difference. Result has 36 places, 25 transitions, 118 flow [2023-08-24 12:32:34,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2023-08-24 12:32:34,725 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 12 predicate places. [2023-08-24 12:32:34,726 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 118 flow [2023-08-24 12:32:34,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 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 12:32:34,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 12:32:34,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 12:32:34,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 12:32:34,727 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-24 12:32:34,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 12:32:34,727 INFO L85 PathProgramCache]: Analyzing trace with hash -373346276, now seen corresponding path program 1 times [2023-08-24 12:32:34,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 12:32:34,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800556403] [2023-08-24 12:32:34,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 12:32:34,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 12:32:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 12:32:34,790 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 12:32:34,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 12:32:34,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800556403] [2023-08-24 12:32:34,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800556403] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 12:32:34,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 12:32:34,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 12:32:34,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077259443] [2023-08-24 12:32:34,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 12:32:34,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 12:32:34,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 12:32:34,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 12:32:34,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 12:32:34,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 174 [2023-08-24 12:32:34,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 118 flow. Second operand has 5 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 0 states have call successors, (0), 0 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 12:32:34,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 12:32:34,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 174 [2023-08-24 12:32:34,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 12:32:34,863 INFO L124 PetriNetUnfolderBase]: 27/95 cut-off events. [2023-08-24 12:32:34,863 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-08-24 12:32:34,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 95 events. 27/95 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 262 event pairs, 10 based on Foata normal form. 4/99 useless extension candidates. Maximal degree in co-relation 275. Up to 36 conditions per place. [2023-08-24 12:32:34,864 INFO L140 encePairwiseOnDemand]: 168/174 looper letters, 26 selfloop transitions, 10 changer transitions 0/38 dead transitions. [2023-08-24 12:32:34,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 38 transitions, 237 flow [2023-08-24 12:32:34,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 12:32:34,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 12:32:34,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 471 transitions. [2023-08-24 12:32:34,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4511494252873563 [2023-08-24 12:32:34,866 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 471 transitions. [2023-08-24 12:32:34,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 471 transitions. [2023-08-24 12:32:34,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 12:32:34,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 471 transitions. [2023-08-24 12:32:34,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.5) internal successors, (471), 6 states have internal predecessors, (471), 0 states have call successors, (0), 0 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 12:32:34,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 0 states have call successors, (0), 0 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 12:32:34,870 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 0 states have call successors, (0), 0 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 12:32:34,870 INFO L175 Difference]: Start difference. First operand has 36 places, 25 transitions, 118 flow. Second operand 6 states and 471 transitions. [2023-08-24 12:32:34,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 38 transitions, 237 flow [2023-08-24 12:32:34,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 38 transitions, 229 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 12:32:34,872 INFO L231 Difference]: Finished difference. Result has 37 places, 27 transitions, 138 flow [2023-08-24 12:32:34,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=138, PETRI_PLACES=37, PETRI_TRANSITIONS=27} [2023-08-24 12:32:34,873 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 13 predicate places. [2023-08-24 12:32:34,873 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 27 transitions, 138 flow [2023-08-24 12:32:34,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 0 states have call successors, (0), 0 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 12:32:34,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 12:32:34,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 12:32:34,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 12:32:34,874 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-24 12:32:34,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 12:32:34,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1294456676, now seen corresponding path program 1 times [2023-08-24 12:32:34,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 12:32:34,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560720828] [2023-08-24 12:32:34,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 12:32:34,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 12:32:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 12:32:34,939 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 12:32:34,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 12:32:34,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560720828] [2023-08-24 12:32:34,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560720828] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 12:32:34,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 12:32:34,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 12:32:34,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118145460] [2023-08-24 12:32:34,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 12:32:34,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 12:32:34,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 12:32:34,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 12:32:34,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 12:32:34,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 174 [2023-08-24 12:32:34,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 27 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 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 12:32:34,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 12:32:34,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 174 [2023-08-24 12:32:34,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 12:32:34,984 INFO L124 PetriNetUnfolderBase]: 26/91 cut-off events. [2023-08-24 12:32:34,984 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2023-08-24 12:32:34,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 91 events. 26/91 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 245 event pairs, 15 based on Foata normal form. 3/94 useless extension candidates. Maximal degree in co-relation 269. Up to 55 conditions per place. [2023-08-24 12:32:34,985 INFO L140 encePairwiseOnDemand]: 169/174 looper letters, 24 selfloop transitions, 6 changer transitions 0/32 dead transitions. [2023-08-24 12:32:34,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 32 transitions, 211 flow [2023-08-24 12:32:34,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 12:32:34,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 12:32:34,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 365 transitions. [2023-08-24 12:32:34,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5244252873563219 [2023-08-24 12:32:34,987 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 365 transitions. [2023-08-24 12:32:34,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 365 transitions. [2023-08-24 12:32:34,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 12:32:34,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 365 transitions. [2023-08-24 12:32:34,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 0 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 12:32:34,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 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 12:32:34,990 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 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 12:32:34,990 INFO L175 Difference]: Start difference. First operand has 37 places, 27 transitions, 138 flow. Second operand 4 states and 365 transitions. [2023-08-24 12:32:34,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 32 transitions, 211 flow [2023-08-24 12:32:34,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 32 transitions, 205 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-24 12:32:34,992 INFO L231 Difference]: Finished difference. Result has 37 places, 26 transitions, 136 flow [2023-08-24 12:32:34,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=37, PETRI_TRANSITIONS=26} [2023-08-24 12:32:34,992 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 13 predicate places. [2023-08-24 12:32:34,992 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 26 transitions, 136 flow [2023-08-24 12:32:34,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 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 12:32:34,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 12:32:34,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 12:32:34,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 12:32:34,993 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-24 12:32:34,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 12:32:34,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1621126349, now seen corresponding path program 1 times [2023-08-24 12:32:34,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 12:32:34,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358595001] [2023-08-24 12:32:34,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 12:32:34,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 12:32:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 12:32:35,155 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 12:32:35,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 12:32:35,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358595001] [2023-08-24 12:32:35,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358595001] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 12:32:35,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 12:32:35,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 12:32:35,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189811929] [2023-08-24 12:32:35,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 12:32:35,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 12:32:35,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 12:32:35,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 12:32:35,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 12:32:35,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 174 [2023-08-24 12:32:35,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 26 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:35,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 12:32:35,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 174 [2023-08-24 12:32:35,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 12:32:35,200 INFO L124 PetriNetUnfolderBase]: 18/69 cut-off events. [2023-08-24 12:32:35,200 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-08-24 12:32:35,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 69 events. 18/69 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 166 event pairs, 1 based on Foata normal form. 9/78 useless extension candidates. Maximal degree in co-relation 218. Up to 48 conditions per place. [2023-08-24 12:32:35,201 INFO L140 encePairwiseOnDemand]: 170/174 looper letters, 27 selfloop transitions, 5 changer transitions 0/32 dead transitions. [2023-08-24 12:32:35,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 32 transitions, 227 flow [2023-08-24 12:32:35,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 12:32:35,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 12:32:35,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 293 transitions. [2023-08-24 12:32:35,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4209770114942529 [2023-08-24 12:32:35,202 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 293 transitions. [2023-08-24 12:32:35,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 293 transitions. [2023-08-24 12:32:35,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 12:32:35,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 293 transitions. [2023-08-24 12:32:35,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 12:32:35,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 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 12:32:35,205 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 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 12:32:35,205 INFO L175 Difference]: Start difference. First operand has 37 places, 26 transitions, 136 flow. Second operand 4 states and 293 transitions. [2023-08-24 12:32:35,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 32 transitions, 227 flow [2023-08-24 12:32:35,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 32 transitions, 208 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-24 12:32:35,207 INFO L231 Difference]: Finished difference. Result has 36 places, 25 transitions, 122 flow [2023-08-24 12:32:35,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2023-08-24 12:32:35,210 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 12 predicate places. [2023-08-24 12:32:35,210 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 122 flow [2023-08-24 12:32:35,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:35,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 12:32:35,211 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 12:32:35,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 12:32:35,211 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-24 12:32:35,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 12:32:35,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1698097732, now seen corresponding path program 1 times [2023-08-24 12:32:35,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 12:32:35,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791036069] [2023-08-24 12:32:35,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 12:32:35,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 12:32:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 12:32:35,359 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 12:32:35,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 12:32:35,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791036069] [2023-08-24 12:32:35,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791036069] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 12:32:35,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 12:32:35,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 12:32:35,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688788922] [2023-08-24 12:32:35,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 12:32:35,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 12:32:35,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 12:32:35,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 12:32:35,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 12:32:35,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 174 [2023-08-24 12:32:35,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 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 12:32:35,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 12:32:35,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 174 [2023-08-24 12:32:35,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 12:32:35,398 INFO L124 PetriNetUnfolderBase]: 17/67 cut-off events. [2023-08-24 12:32:35,399 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-08-24 12:32:35,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 67 events. 17/67 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 154 event pairs, 11 based on Foata normal form. 1/68 useless extension candidates. Maximal degree in co-relation 208. Up to 46 conditions per place. [2023-08-24 12:32:35,399 INFO L140 encePairwiseOnDemand]: 170/174 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2023-08-24 12:32:35,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 28 transitions, 183 flow [2023-08-24 12:32:35,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 12:32:35,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 12:32:35,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 361 transitions. [2023-08-24 12:32:35,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186781609195402 [2023-08-24 12:32:35,401 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 361 transitions. [2023-08-24 12:32:35,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 361 transitions. [2023-08-24 12:32:35,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 12:32:35,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 361 transitions. [2023-08-24 12:32:35,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 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 12:32:35,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 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 12:32:35,404 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 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 12:32:35,404 INFO L175 Difference]: Start difference. First operand has 36 places, 25 transitions, 122 flow. Second operand 4 states and 361 transitions. [2023-08-24 12:32:35,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 28 transitions, 183 flow [2023-08-24 12:32:35,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 28 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 12:32:35,406 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2023-08-24 12:32:35,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2023-08-24 12:32:35,407 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 12 predicate places. [2023-08-24 12:32:35,408 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2023-08-24 12:32:35,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 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 12:32:35,411 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 12:32:35,412 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-24 12:32:35,412 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-24 12:32:35,412 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 12:32:35,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 12:32:35,413 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 12:32:35,416 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 12:32:35,416 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 12:32:35,421 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 12:32:35 BasicIcfg [2023-08-24 12:32:35,421 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 12:32:35,423 INFO L158 Benchmark]: Toolchain (without parser) took 5866.38ms. Allocated memory was 369.1MB in the beginning and 444.6MB in the end (delta: 75.5MB). Free memory was 344.1MB in the beginning and 254.8MB in the end (delta: 89.2MB). Peak memory consumption was 166.3MB. Max. memory is 16.0GB. [2023-08-24 12:32:35,424 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 369.1MB. Free memory is still 345.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 12:32:35,426 INFO L158 Benchmark]: CACSL2BoogieTranslator took 481.56ms. Allocated memory is still 369.1MB. Free memory was 343.5MB in the beginning and 324.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 12:32:35,426 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.55ms. Allocated memory is still 369.1MB. Free memory was 324.1MB in the beginning and 322.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 12:32:35,426 INFO L158 Benchmark]: Boogie Preprocessor took 28.78ms. Allocated memory is still 369.1MB. Free memory was 322.6MB in the beginning and 321.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 12:32:35,427 INFO L158 Benchmark]: RCFGBuilder took 347.31ms. Allocated memory is still 369.1MB. Free memory was 321.0MB in the beginning and 305.8MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-24 12:32:35,427 INFO L158 Benchmark]: TraceAbstraction took 4947.91ms. Allocated memory was 369.1MB in the beginning and 444.6MB in the end (delta: 75.5MB). Free memory was 305.3MB in the beginning and 254.8MB in the end (delta: 50.4MB). Peak memory consumption was 128.6MB. Max. memory is 16.0GB. [2023-08-24 12:32:35,430 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 369.1MB. Free memory is still 345.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 481.56ms. Allocated memory is still 369.1MB. Free memory was 343.5MB in the beginning and 324.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 54.55ms. Allocated memory is still 369.1MB. Free memory was 324.1MB in the beginning and 322.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 28.78ms. Allocated memory is still 369.1MB. Free memory was 322.6MB in the beginning and 321.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 347.31ms. Allocated memory is still 369.1MB. Free memory was 321.0MB in the beginning and 305.8MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 4947.91ms. Allocated memory was 369.1MB in the beginning and 444.6MB in the end (delta: 75.5MB). Free memory was 305.3MB in the beginning and 254.8MB in the end (delta: 50.4MB). Peak memory consumption was 128.6MB. 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: 3.0s, 88 PlacesBefore, 24 PlacesAfterwards, 86 TransitionsBefore, 21 TransitionsAfterwards, 1152 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 73 TotalNumberOfCompositions, 2644 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 973, independent: 801, independent conditional: 0, independent unconditional: 801, dependent: 172, dependent conditional: 0, dependent unconditional: 172, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 583, independent: 550, independent conditional: 0, independent unconditional: 550, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 973, independent: 251, independent conditional: 0, independent unconditional: 251, dependent: 139, dependent conditional: 0, dependent unconditional: 139, unknown: 583, unknown conditional: 0, unknown unconditional: 583] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 13, Positive conditional cache size: 0, Positive unconditional cache size: 13, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 119 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.8s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 92 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 92 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 338 IncrementalHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 1 mSDtfsCounter, 338 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=6, InterpolantAutomatonStates: 34, 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, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 348 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-24 12:32:35,449 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...