/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.fix-rcfgbuilder-lbe-0ccecc1-m [2023-11-10 11:54:30,447 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-10 11:54:30,503 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-NoLbe.epf [2023-11-10 11:54:30,531 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-10 11:54:30,531 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-10 11:54:30,531 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-10 11:54:30,532 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-10 11:54:30,532 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-10 11:54:30,532 INFO L153 SettingsManager]: * Use SBE=true [2023-11-10 11:54:30,532 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-10 11:54:30,533 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-10 11:54:30,533 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-10 11:54:30,533 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-10 11:54:30,533 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-10 11:54:30,534 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-10 11:54:30,534 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-10 11:54:30,534 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-10 11:54:30,534 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-10 11:54:30,534 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-10 11:54:30,535 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-10 11:54:30,535 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-10 11:54:30,549 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-10 11:54:30,549 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-10 11:54:30,549 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-10 11:54:30,549 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-10 11:54:30,550 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 11:54:30,550 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-10 11:54:30,550 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-10 11:54:30,550 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-10 11:54:30,550 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-10 11:54:30,551 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-10 11:54:30,551 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-10 11:54:30,551 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-10 11:54:30,551 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-10 11:54:30,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-10 11:54:30,744 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-10 11:54:30,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-10 11:54:30,746 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-10 11:54:30,748 INFO L274 PluginConnector]: CDTParser initialized [2023-11-10 11:54:30,748 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2023-11-10 11:54:31,801 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-10 11:54:32,046 INFO L384 CDTParser]: Found 1 translation units. [2023-11-10 11:54:32,046 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2023-11-10 11:54:32,056 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/410b9d71f/33b6c3cf19be48f4bbc10f88712b83f8/FLAG69590dc8d [2023-11-10 11:54:32,069 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/410b9d71f/33b6c3cf19be48f4bbc10f88712b83f8 [2023-11-10 11:54:32,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-10 11:54:32,072 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-10 11:54:32,073 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-10 11:54:32,073 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-10 11:54:32,076 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-10 11:54:32,077 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:54:32" (1/1) ... [2023-11-10 11:54:32,077 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@710affcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:32, skipping insertion in model container [2023-11-10 11:54:32,077 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:54:32" (1/1) ... [2023-11-10 11:54:32,110 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-10 11:54:32,220 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i[1097,1110] [2023-11-10 11:54:32,304 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 11:54:32,317 INFO L202 MainTranslator]: Completed pre-run [2023-11-10 11:54:32,328 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i[1097,1110] [2023-11-10 11:54:32,369 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 11:54:32,397 INFO L206 MainTranslator]: Completed translation [2023-11-10 11:54:32,398 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:32 WrapperNode [2023-11-10 11:54:32,398 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-10 11:54:32,399 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-10 11:54:32,399 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-10 11:54:32,399 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-10 11:54:32,404 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:32" (1/1) ... [2023-11-10 11:54:32,430 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:32" (1/1) ... [2023-11-10 11:54:32,451 INFO L138 Inliner]: procedures = 163, calls = 52, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 103 [2023-11-10 11:54:32,451 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-10 11:54:32,452 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-10 11:54:32,452 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-10 11:54:32,452 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-10 11:54:32,458 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:32" (1/1) ... [2023-11-10 11:54:32,459 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:32" (1/1) ... [2023-11-10 11:54:32,472 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:32" (1/1) ... [2023-11-10 11:54:32,472 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:32" (1/1) ... [2023-11-10 11:54:32,480 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:32" (1/1) ... [2023-11-10 11:54:32,487 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:32" (1/1) ... [2023-11-10 11:54:32,488 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:32" (1/1) ... [2023-11-10 11:54:32,489 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:32" (1/1) ... [2023-11-10 11:54:32,491 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-10 11:54:32,492 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-10 11:54:32,492 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-10 11:54:32,492 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-10 11:54:32,493 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:32" (1/1) ... [2023-11-10 11:54:32,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 11:54:32,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 11:54:32,538 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-10 11:54:32,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-10 11:54:32,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-10 11:54:32,562 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-10 11:54:32,563 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-10 11:54:32,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-10 11:54:32,563 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-10 11:54:32,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-10 11:54:32,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-10 11:54:32,563 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-10 11:54:32,563 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-10 11:54:32,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-10 11:54:32,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-10 11:54:32,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-10 11:54:32,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-10 11:54:32,564 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-10 11:54:32,649 INFO L236 CfgBuilder]: Building ICFG [2023-11-10 11:54:32,651 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-10 11:54:32,824 INFO L277 CfgBuilder]: Performing block encoding [2023-11-10 11:54:32,831 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-10 11:54:32,831 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-10 11:54:32,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:54:32 BoogieIcfgContainer [2023-11-10 11:54:32,834 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-10 11:54:32,836 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-10 11:54:32,836 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-10 11:54:32,843 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-10 11:54:32,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 11:54:32" (1/3) ... [2023-11-10 11:54:32,844 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379e0ab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:54:32, skipping insertion in model container [2023-11-10 11:54:32,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:32" (2/3) ... [2023-11-10 11:54:32,844 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379e0ab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:54:32, skipping insertion in model container [2023-11-10 11:54:32,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:54:32" (3/3) ... [2023-11-10 11:54:32,845 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_27-multiple-protecting2_true.i [2023-11-10 11:54:32,857 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-10 11:54:32,857 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-10 11:54:32,857 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-10 11:54:32,930 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-10 11:54:32,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 155 transitions, 324 flow [2023-11-10 11:54:33,008 INFO L124 PetriNetUnfolderBase]: 4/153 cut-off events. [2023-11-10 11:54:33,008 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-10 11:54:33,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 153 events. 4/153 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 135 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2023-11-10 11:54:33,013 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 155 transitions, 324 flow [2023-11-10 11:54:33,016 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 132 transitions, 270 flow [2023-11-10 11:54:33,050 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 11:54:33,054 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6f677a05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 11:54:33,054 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-10 11:54:33,076 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 11:54:33,076 INFO L124 PetriNetUnfolderBase]: 0/81 cut-off events. [2023-11-10 11:54:33,076 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-10 11:54:33,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:54:33,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:54:33,077 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-10 11:54:33,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:54:33,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1238895136, now seen corresponding path program 1 times [2023-11-10 11:54:33,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:54:33,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799375251] [2023-11-10 11:54:33,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:54:33,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:54:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:54:33,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:54:33,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:54:33,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799375251] [2023-11-10 11:54:33,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799375251] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:54:33,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:54:33,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-10 11:54:33,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419979136] [2023-11-10 11:54:33,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:54:33,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-10 11:54:33,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:54:33,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-10 11:54:33,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-10 11:54:33,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 155 [2023-11-10 11:54:33,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 132 transitions, 270 flow. Second operand has 5 states, 5 states have (on average 111.4) internal successors, (557), 5 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:33,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:54:33,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 155 [2023-11-10 11:54:33,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:54:33,684 INFO L124 PetriNetUnfolderBase]: 121/603 cut-off events. [2023-11-10 11:54:33,684 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-10 11:54:33,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 909 conditions, 603 events. 121/603 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3101 event pairs, 37 based on Foata normal form. 16/606 useless extension candidates. Maximal degree in co-relation 864. Up to 134 conditions per place. [2023-11-10 11:54:33,691 INFO L140 encePairwiseOnDemand]: 133/155 looper letters, 47 selfloop transitions, 27 changer transitions 5/173 dead transitions. [2023-11-10 11:54:33,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 173 transitions, 513 flow [2023-11-10 11:54:33,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-10 11:54:33,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-10 11:54:33,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1079 transitions. [2023-11-10 11:54:33,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7734767025089606 [2023-11-10 11:54:33,705 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1079 transitions. [2023-11-10 11:54:33,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1079 transitions. [2023-11-10 11:54:33,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:54:33,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1079 transitions. [2023-11-10 11:54:33,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 119.88888888888889) internal successors, (1079), 9 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:33,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 155.0) internal successors, (1550), 10 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:33,721 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 155.0) internal successors, (1550), 10 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:33,723 INFO L175 Difference]: Start difference. First operand has 136 places, 132 transitions, 270 flow. Second operand 9 states and 1079 transitions. [2023-11-10 11:54:33,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 173 transitions, 513 flow [2023-11-10 11:54:33,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 173 transitions, 510 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-10 11:54:33,730 INFO L231 Difference]: Finished difference. Result has 145 places, 147 transitions, 430 flow [2023-11-10 11:54:33,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=430, PETRI_PLACES=145, PETRI_TRANSITIONS=147} [2023-11-10 11:54:33,734 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, 9 predicate places. [2023-11-10 11:54:33,734 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 147 transitions, 430 flow [2023-11-10 11:54:33,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.4) internal successors, (557), 5 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:33,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:54:33,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:54:33,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-10 11:54:33,735 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-10 11:54:33,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:54:33,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1733434593, now seen corresponding path program 1 times [2023-11-10 11:54:33,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:54:33,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655974423] [2023-11-10 11:54:33,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:54:33,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:54:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:54:33,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:54:33,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:54:33,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655974423] [2023-11-10 11:54:33,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655974423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:54:33,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:54:33,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 11:54:33,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622065694] [2023-11-10 11:54:33,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:54:33,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 11:54:33,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:54:33,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 11:54:33,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-10 11:54:33,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 155 [2023-11-10 11:54:33,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 147 transitions, 430 flow. Second operand has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:33,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:54:33,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 155 [2023-11-10 11:54:33,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:54:34,294 INFO L124 PetriNetUnfolderBase]: 351/1741 cut-off events. [2023-11-10 11:54:34,295 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2023-11-10 11:54:34,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3009 conditions, 1741 events. 351/1741 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 12749 event pairs, 122 based on Foata normal form. 89/1800 useless extension candidates. Maximal degree in co-relation 2947. Up to 524 conditions per place. [2023-11-10 11:54:34,309 INFO L140 encePairwiseOnDemand]: 148/155 looper letters, 50 selfloop transitions, 7 changer transitions 0/168 dead transitions. [2023-11-10 11:54:34,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 168 transitions, 588 flow [2023-11-10 11:54:34,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-10 11:54:34,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-10 11:54:34,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 594 transitions. [2023-11-10 11:54:34,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7664516129032258 [2023-11-10 11:54:34,311 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 594 transitions. [2023-11-10 11:54:34,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 594 transitions. [2023-11-10 11:54:34,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:54:34,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 594 transitions. [2023-11-10 11:54:34,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 118.8) internal successors, (594), 5 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:34,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 155.0) internal successors, (930), 6 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:34,314 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 155.0) internal successors, (930), 6 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:34,314 INFO L175 Difference]: Start difference. First operand has 145 places, 147 transitions, 430 flow. Second operand 5 states and 594 transitions. [2023-11-10 11:54:34,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 168 transitions, 588 flow [2023-11-10 11:54:34,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 168 transitions, 564 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-10 11:54:34,326 INFO L231 Difference]: Finished difference. Result has 148 places, 150 transitions, 437 flow [2023-11-10 11:54:34,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=437, PETRI_PLACES=148, PETRI_TRANSITIONS=150} [2023-11-10 11:54:34,327 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, 12 predicate places. [2023-11-10 11:54:34,327 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 150 transitions, 437 flow [2023-11-10 11:54:34,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:34,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:54:34,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:54:34,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-10 11:54:34,328 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-10 11:54:34,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:54:34,330 INFO L85 PathProgramCache]: Analyzing trace with hash -222647420, now seen corresponding path program 1 times [2023-11-10 11:54:34,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:54:34,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843075240] [2023-11-10 11:54:34,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:54:34,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:54:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:54:34,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:54:34,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:54:34,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843075240] [2023-11-10 11:54:34,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843075240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:54:34,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:54:34,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-10 11:54:34,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141936491] [2023-11-10 11:54:34,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:54:34,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-10 11:54:34,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:54:34,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-10 11:54:34,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-10 11:54:34,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 155 [2023-11-10 11:54:34,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 150 transitions, 437 flow. Second operand has 8 states, 8 states have (on average 109.625) internal successors, (877), 8 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:34,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:54:34,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 155 [2023-11-10 11:54:34,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:54:35,083 INFO L124 PetriNetUnfolderBase]: 234/1009 cut-off events. [2023-11-10 11:54:35,083 INFO L125 PetriNetUnfolderBase]: For 174/174 co-relation queries the response was YES. [2023-11-10 11:54:35,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2021 conditions, 1009 events. 234/1009 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 6246 event pairs, 12 based on Foata normal form. 13/1006 useless extension candidates. Maximal degree in co-relation 1968. Up to 94 conditions per place. [2023-11-10 11:54:35,088 INFO L140 encePairwiseOnDemand]: 131/155 looper letters, 129 selfloop transitions, 121 changer transitions 6/351 dead transitions. [2023-11-10 11:54:35,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 351 transitions, 1683 flow [2023-11-10 11:54:35,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-10 11:54:35,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-10 11:54:35,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3044 transitions. [2023-11-10 11:54:35,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7553349875930521 [2023-11-10 11:54:35,093 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3044 transitions. [2023-11-10 11:54:35,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3044 transitions. [2023-11-10 11:54:35,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:54:35,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3044 transitions. [2023-11-10 11:54:35,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 117.07692307692308) internal successors, (3044), 26 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:35,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 155.0) internal successors, (4185), 27 states have internal predecessors, (4185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:35,110 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 155.0) internal successors, (4185), 27 states have internal predecessors, (4185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:35,110 INFO L175 Difference]: Start difference. First operand has 148 places, 150 transitions, 437 flow. Second operand 26 states and 3044 transitions. [2023-11-10 11:54:35,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 351 transitions, 1683 flow [2023-11-10 11:54:35,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 351 transitions, 1680 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-10 11:54:35,119 INFO L231 Difference]: Finished difference. Result has 177 places, 243 transitions, 1235 flow [2023-11-10 11:54:35,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1235, PETRI_PLACES=177, PETRI_TRANSITIONS=243} [2023-11-10 11:54:35,120 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, 41 predicate places. [2023-11-10 11:54:35,120 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 243 transitions, 1235 flow [2023-11-10 11:54:35,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 109.625) internal successors, (877), 8 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:35,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:54:35,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:54:35,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-10 11:54:35,122 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-10 11:54:35,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:54:35,123 INFO L85 PathProgramCache]: Analyzing trace with hash -236273281, now seen corresponding path program 1 times [2023-11-10 11:54:35,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:54:35,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405601788] [2023-11-10 11:54:35,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:54:35,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:54:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:54:35,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:54:35,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:54:35,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405601788] [2023-11-10 11:54:35,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405601788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:54:35,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:54:35,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-10 11:54:35,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944402435] [2023-11-10 11:54:35,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:54:35,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-10 11:54:35,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:54:35,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-10 11:54:35,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-10 11:54:35,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 155 [2023-11-10 11:54:35,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 243 transitions, 1235 flow. Second operand has 5 states, 5 states have (on average 113.8) internal successors, (569), 5 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:35,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:54:35,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 155 [2023-11-10 11:54:35,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:54:35,457 INFO L124 PetriNetUnfolderBase]: 307/1514 cut-off events. [2023-11-10 11:54:35,457 INFO L125 PetriNetUnfolderBase]: For 1036/1108 co-relation queries the response was YES. [2023-11-10 11:54:35,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3423 conditions, 1514 events. 307/1514 cut-off events. For 1036/1108 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11282 event pairs, 51 based on Foata normal form. 26/1527 useless extension candidates. Maximal degree in co-relation 3364. Up to 342 conditions per place. [2023-11-10 11:54:35,465 INFO L140 encePairwiseOnDemand]: 143/155 looper letters, 106 selfloop transitions, 85 changer transitions 0/306 dead transitions. [2023-11-10 11:54:35,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 306 transitions, 1977 flow [2023-11-10 11:54:35,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-10 11:54:35,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-10 11:54:35,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1063 transitions. [2023-11-10 11:54:35,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7620071684587814 [2023-11-10 11:54:35,468 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1063 transitions. [2023-11-10 11:54:35,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1063 transitions. [2023-11-10 11:54:35,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:54:35,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1063 transitions. [2023-11-10 11:54:35,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 118.11111111111111) internal successors, (1063), 9 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:35,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 155.0) internal successors, (1550), 10 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:35,472 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 155.0) internal successors, (1550), 10 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:35,472 INFO L175 Difference]: Start difference. First operand has 177 places, 243 transitions, 1235 flow. Second operand 9 states and 1063 transitions. [2023-11-10 11:54:35,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 306 transitions, 1977 flow [2023-11-10 11:54:35,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 306 transitions, 1924 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-11-10 11:54:35,483 INFO L231 Difference]: Finished difference. Result has 184 places, 275 transitions, 1664 flow [2023-11-10 11:54:35,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=1190, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1664, PETRI_PLACES=184, PETRI_TRANSITIONS=275} [2023-11-10 11:54:35,485 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, 48 predicate places. [2023-11-10 11:54:35,485 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 275 transitions, 1664 flow [2023-11-10 11:54:35,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.8) internal successors, (569), 5 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:35,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:54:35,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:54:35,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-10 11:54:35,486 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-10 11:54:35,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:54:35,488 INFO L85 PathProgramCache]: Analyzing trace with hash 2025375079, now seen corresponding path program 1 times [2023-11-10 11:54:35,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:54:35,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059220323] [2023-11-10 11:54:35,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:54:35,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:54:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:54:35,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:54:35,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:54:35,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059220323] [2023-11-10 11:54:35,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059220323] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:54:35,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:54:35,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-10 11:54:35,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242491548] [2023-11-10 11:54:35,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:54:35,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-10 11:54:35,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:54:35,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-10 11:54:35,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-10 11:54:35,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 155 [2023-11-10 11:54:35,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 275 transitions, 1664 flow. Second operand has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:35,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:54:35,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 155 [2023-11-10 11:54:35,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:54:35,851 INFO L124 PetriNetUnfolderBase]: 404/2192 cut-off events. [2023-11-10 11:54:35,852 INFO L125 PetriNetUnfolderBase]: For 916/928 co-relation queries the response was YES. [2023-11-10 11:54:35,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5024 conditions, 2192 events. 404/2192 cut-off events. For 916/928 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 17537 event pairs, 80 based on Foata normal form. 106/2269 useless extension candidates. Maximal degree in co-relation 4955. Up to 530 conditions per place. [2023-11-10 11:54:35,861 INFO L140 encePairwiseOnDemand]: 137/155 looper letters, 30 selfloop transitions, 19 changer transitions 8/281 dead transitions. [2023-11-10 11:54:35,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 281 transitions, 1711 flow [2023-11-10 11:54:35,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-10 11:54:35,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-10 11:54:35,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-11-10 11:54:35,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.843010752688172 [2023-11-10 11:54:35,863 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-11-10 11:54:35,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-11-10 11:54:35,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:54:35,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-11-10 11:54:35,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:35,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:35,865 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:35,865 INFO L175 Difference]: Start difference. First operand has 184 places, 275 transitions, 1664 flow. Second operand 3 states and 392 transitions. [2023-11-10 11:54:35,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 281 transitions, 1711 flow [2023-11-10 11:54:35,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 281 transitions, 1711 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-10 11:54:35,877 INFO L231 Difference]: Finished difference. Result has 187 places, 268 transitions, 1618 flow [2023-11-10 11:54:35,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=1556, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1618, PETRI_PLACES=187, PETRI_TRANSITIONS=268} [2023-11-10 11:54:35,878 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, 51 predicate places. [2023-11-10 11:54:35,878 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 268 transitions, 1618 flow [2023-11-10 11:54:35,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:35,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:54:35,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:54:35,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-10 11:54:35,879 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-10 11:54:35,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:54:35,879 INFO L85 PathProgramCache]: Analyzing trace with hash 612031357, now seen corresponding path program 2 times [2023-11-10 11:54:35,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:54:35,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106102245] [2023-11-10 11:54:35,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:54:35,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:54:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:54:36,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:54:36,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:54:36,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106102245] [2023-11-10 11:54:36,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106102245] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:54:36,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:54:36,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 11:54:36,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572375938] [2023-11-10 11:54:36,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:54:36,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 11:54:36,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:54:36,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 11:54:36,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-10 11:54:36,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 155 [2023-11-10 11:54:36,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 268 transitions, 1618 flow. Second operand has 7 states, 7 states have (on average 105.28571428571429) internal successors, (737), 7 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:36,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:54:36,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 155 [2023-11-10 11:54:36,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:54:36,233 INFO L124 PetriNetUnfolderBase]: 132/986 cut-off events. [2023-11-10 11:54:36,233 INFO L125 PetriNetUnfolderBase]: For 704/762 co-relation queries the response was YES. [2023-11-10 11:54:36,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2702 conditions, 986 events. 132/986 cut-off events. For 704/762 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 6051 event pairs, 19 based on Foata normal form. 40/1013 useless extension candidates. Maximal degree in co-relation 2683. Up to 339 conditions per place. [2023-11-10 11:54:36,237 INFO L140 encePairwiseOnDemand]: 149/155 looper letters, 49 selfloop transitions, 8 changer transitions 16/166 dead transitions. [2023-11-10 11:54:36,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 166 transitions, 912 flow [2023-11-10 11:54:36,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-10 11:54:36,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-10 11:54:36,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 657 transitions. [2023-11-10 11:54:36,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7064516129032258 [2023-11-10 11:54:36,239 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 657 transitions. [2023-11-10 11:54:36,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 657 transitions. [2023-11-10 11:54:36,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:54:36,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 657 transitions. [2023-11-10 11:54:36,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.5) internal successors, (657), 6 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:36,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 155.0) internal successors, (1085), 7 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:36,242 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 155.0) internal successors, (1085), 7 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:36,242 INFO L175 Difference]: Start difference. First operand has 187 places, 268 transitions, 1618 flow. Second operand 6 states and 657 transitions. [2023-11-10 11:54:36,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 166 transitions, 912 flow [2023-11-10 11:54:36,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 166 transitions, 765 flow, removed 5 selfloop flow, removed 12 redundant places. [2023-11-10 11:54:36,247 INFO L231 Difference]: Finished difference. Result has 152 places, 142 transitions, 531 flow [2023-11-10 11:54:36,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=531, PETRI_PLACES=152, PETRI_TRANSITIONS=142} [2023-11-10 11:54:36,248 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, 16 predicate places. [2023-11-10 11:54:36,248 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 142 transitions, 531 flow [2023-11-10 11:54:36,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 105.28571428571429) internal successors, (737), 7 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:36,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:54:36,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:54:36,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-10 11:54:36,249 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-10 11:54:36,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:54:36,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1090482651, now seen corresponding path program 1 times [2023-11-10 11:54:36,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:54:36,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765689649] [2023-11-10 11:54:36,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:54:36,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:54:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:54:36,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:54:36,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:54:36,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765689649] [2023-11-10 11:54:36,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765689649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:54:36,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:54:36,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-10 11:54:36,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982012128] [2023-11-10 11:54:36,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:54:36,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-10 11:54:36,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:54:36,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-10 11:54:36,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-10 11:54:36,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 155 [2023-11-10 11:54:36,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 142 transitions, 531 flow. Second operand has 8 states, 8 states have (on average 104.75) internal successors, (838), 8 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:36,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:54:36,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 155 [2023-11-10 11:54:36,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:54:36,544 INFO L124 PetriNetUnfolderBase]: 64/597 cut-off events. [2023-11-10 11:54:36,545 INFO L125 PetriNetUnfolderBase]: For 258/277 co-relation queries the response was YES. [2023-11-10 11:54:36,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1337 conditions, 597 events. 64/597 cut-off events. For 258/277 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3095 event pairs, 10 based on Foata normal form. 28/621 useless extension candidates. Maximal degree in co-relation 1324. Up to 137 conditions per place. [2023-11-10 11:54:36,546 INFO L140 encePairwiseOnDemand]: 149/155 looper letters, 50 selfloop transitions, 8 changer transitions 7/151 dead transitions. [2023-11-10 11:54:36,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 151 transitions, 694 flow [2023-11-10 11:54:36,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-10 11:54:36,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-10 11:54:36,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 656 transitions. [2023-11-10 11:54:36,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7053763440860215 [2023-11-10 11:54:36,548 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 656 transitions. [2023-11-10 11:54:36,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 656 transitions. [2023-11-10 11:54:36,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:54:36,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 656 transitions. [2023-11-10 11:54:36,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.33333333333333) internal successors, (656), 6 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:36,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 155.0) internal successors, (1085), 7 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:36,551 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 155.0) internal successors, (1085), 7 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:36,551 INFO L175 Difference]: Start difference. First operand has 152 places, 142 transitions, 531 flow. Second operand 6 states and 656 transitions. [2023-11-10 11:54:36,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 151 transitions, 694 flow [2023-11-10 11:54:36,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 151 transitions, 653 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-11-10 11:54:36,554 INFO L231 Difference]: Finished difference. Result has 143 places, 134 transitions, 462 flow [2023-11-10 11:54:36,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=462, PETRI_PLACES=143, PETRI_TRANSITIONS=134} [2023-11-10 11:54:36,554 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, 7 predicate places. [2023-11-10 11:54:36,555 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 134 transitions, 462 flow [2023-11-10 11:54:36,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 104.75) internal successors, (838), 8 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:36,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:54:36,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:54:36,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-10 11:54:36,555 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-10 11:54:36,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:54:36,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1243657607, now seen corresponding path program 1 times [2023-11-10 11:54:36,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:54:36,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344274310] [2023-11-10 11:54:36,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:54:36,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:54:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:54:36,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:54:36,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:54:36,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344274310] [2023-11-10 11:54:36,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344274310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:54:36,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:54:36,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-10 11:54:36,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902210895] [2023-11-10 11:54:36,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:54:36,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-10 11:54:36,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:54:36,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-10 11:54:36,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-10 11:54:36,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 155 [2023-11-10 11:54:36,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 134 transitions, 462 flow. Second operand has 8 states, 8 states have (on average 111.125) internal successors, (889), 8 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:36,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:54:36,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 155 [2023-11-10 11:54:36,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:54:36,817 INFO L124 PetriNetUnfolderBase]: 66/541 cut-off events. [2023-11-10 11:54:36,817 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2023-11-10 11:54:36,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1189 conditions, 541 events. 66/541 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2748 event pairs, 14 based on Foata normal form. 4/543 useless extension candidates. Maximal degree in co-relation 1177. Up to 90 conditions per place. [2023-11-10 11:54:36,818 INFO L140 encePairwiseOnDemand]: 141/155 looper letters, 0 selfloop transitions, 0 changer transitions 172/172 dead transitions. [2023-11-10 11:54:36,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 172 transitions, 794 flow [2023-11-10 11:54:36,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-10 11:54:36,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-10 11:54:36,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1789 transitions. [2023-11-10 11:54:36,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7213709677419354 [2023-11-10 11:54:36,822 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1789 transitions. [2023-11-10 11:54:36,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1789 transitions. [2023-11-10 11:54:36,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:54:36,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1789 transitions. [2023-11-10 11:54:36,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 111.8125) internal successors, (1789), 16 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:36,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 155.0) internal successors, (2635), 17 states have internal predecessors, (2635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:36,829 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 155.0) internal successors, (2635), 17 states have internal predecessors, (2635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:36,829 INFO L175 Difference]: Start difference. First operand has 143 places, 134 transitions, 462 flow. Second operand 16 states and 1789 transitions. [2023-11-10 11:54:36,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 172 transitions, 794 flow [2023-11-10 11:54:36,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 172 transitions, 774 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-10 11:54:36,832 INFO L231 Difference]: Finished difference. Result has 148 places, 0 transitions, 0 flow [2023-11-10 11:54:36,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=148, PETRI_TRANSITIONS=0} [2023-11-10 11:54:36,832 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, 12 predicate places. [2023-11-10 11:54:36,833 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 0 transitions, 0 flow [2023-11-10 11:54:36,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 111.125) internal successors, (889), 8 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:36,835 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-11-10 11:54:36,835 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-11-10 11:54:36,835 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-11-10 11:54:36,835 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-11-10 11:54:36,836 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-11-10 11:54:36,836 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2023-11-10 11:54:36,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-10 11:54:36,836 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2023-11-10 11:54:36,838 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-10 11:54:36,838 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-10 11:54:36,842 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 11:54:36 BasicIcfg [2023-11-10 11:54:36,842 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-10 11:54:36,842 INFO L158 Benchmark]: Toolchain (without parser) took 4769.80ms. Allocated memory was 173.0MB in the beginning and 284.2MB in the end (delta: 111.1MB). Free memory was 137.9MB in the beginning and 114.9MB in the end (delta: 23.0MB). Peak memory consumption was 134.5MB. Max. memory is 8.0GB. [2023-11-10 11:54:36,842 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 173.0MB. Free memory is still 127.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-10 11:54:36,843 INFO L158 Benchmark]: CACSL2BoogieTranslator took 324.78ms. Allocated memory is still 173.0MB. Free memory was 137.5MB in the beginning and 117.6MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-10 11:54:36,843 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.87ms. Allocated memory is still 173.0MB. Free memory was 117.6MB in the beginning and 115.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-10 11:54:36,843 INFO L158 Benchmark]: Boogie Preprocessor took 39.21ms. Allocated memory is still 173.0MB. Free memory was 115.5MB in the beginning and 113.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-10 11:54:36,843 INFO L158 Benchmark]: RCFGBuilder took 342.51ms. Allocated memory is still 173.0MB. Free memory was 113.7MB in the beginning and 96.6MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-11-10 11:54:36,843 INFO L158 Benchmark]: TraceAbstraction took 4006.21ms. Allocated memory was 173.0MB in the beginning and 284.2MB in the end (delta: 111.1MB). Free memory was 95.9MB in the beginning and 114.9MB in the end (delta: -19.0MB). Peak memory consumption was 92.5MB. Max. memory is 8.0GB. [2023-11-10 11:54:36,844 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 173.0MB. Free memory is still 127.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 324.78ms. Allocated memory is still 173.0MB. Free memory was 137.5MB in the beginning and 117.6MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 52.87ms. Allocated memory is still 173.0MB. Free memory was 117.6MB in the beginning and 115.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 39.21ms. Allocated memory is still 173.0MB. Free memory was 115.5MB in the beginning and 113.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 342.51ms. Allocated memory is still 173.0MB. Free memory was 113.7MB in the beginning and 96.6MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 4006.21ms. Allocated memory was 173.0MB in the beginning and 284.2MB in the end (delta: 111.1MB). Free memory was 95.9MB in the beginning and 114.9MB in the end (delta: -19.0MB). Peak memory consumption was 92.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 192 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.9s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 559 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 559 mSDsluCounter, 914 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 654 mSDsCounter, 125 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 927 IncrementalHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 125 mSolverCounterUnsat, 260 mSDtfsCounter, 927 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1664occurred in iteration=4, InterpolantAutomatonStates: 80, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 586 NumberOfCodeBlocks, 586 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 578 ConstructedInterpolants, 0 QuantifiedInterpolants, 2311 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-10 11:54:36,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...