/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 16:39:38,292 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 16:39:38,382 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 16:39:38,412 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 16:39:38,413 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 16:39:38,414 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 16:39:38,414 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 16:39:38,415 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 16:39:38,415 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 16:39:38,418 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 16:39:38,419 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 16:39:38,419 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 16:39:38,419 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 16:39:38,420 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 16:39:38,421 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 16:39:38,421 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 16:39:38,421 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 16:39:38,421 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 16:39:38,421 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 16:39:38,422 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 16:39:38,422 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 16:39:38,423 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 16:39:38,423 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 16:39:38,423 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 16:39:38,423 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 16:39:38,423 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:39:38,424 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 16:39:38,424 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 16:39:38,424 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 16:39:38,424 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 16:39:38,425 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 16:39:38,425 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 16:39:38,426 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 16:39:38,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 16:39:38,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 16:39:38,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 16:39:38,670 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 16:39:38,671 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 16:39:38,672 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2023-11-17 16:39:39,845 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 16:39:40,094 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 16:39:40,095 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2023-11-17 16:39:40,112 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc9ecf686/65384e54902b4dafb7977a00f1445b3b/FLAG01318f8e1 [2023-11-17 16:39:40,125 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc9ecf686/65384e54902b4dafb7977a00f1445b3b [2023-11-17 16:39:40,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 16:39:40,129 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 16:39:40,135 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 16:39:40,136 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 16:39:40,139 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 16:39:40,140 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:39:40" (1/1) ... [2023-11-17 16:39:40,141 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@372cda2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:39:40, skipping insertion in model container [2023-11-17 16:39:40,141 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:39:40" (1/1) ... [2023-11-17 16:39:40,191 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 16:39:40,495 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2023-11-17 16:39:40,499 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:39:40,514 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 16:39:40,563 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2023-11-17 16:39:40,564 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:39:40,621 INFO L206 MainTranslator]: Completed translation [2023-11-17 16:39:40,621 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:39:40 WrapperNode [2023-11-17 16:39:40,621 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 16:39:40,622 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 16:39:40,622 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 16:39:40,622 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 16:39:40,627 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:39:40" (1/1) ... [2023-11-17 16:39:40,645 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:39:40" (1/1) ... [2023-11-17 16:39:40,665 INFO L138 Inliner]: procedures = 244, calls = 54, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80 [2023-11-17 16:39:40,665 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 16:39:40,666 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 16:39:40,666 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 16:39:40,666 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 16:39:40,674 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:39:40" (1/1) ... [2023-11-17 16:39:40,674 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:39:40" (1/1) ... [2023-11-17 16:39:40,678 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:39:40" (1/1) ... [2023-11-17 16:39:40,678 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:39:40" (1/1) ... [2023-11-17 16:39:40,684 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:39:40" (1/1) ... [2023-11-17 16:39:40,698 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:39:40" (1/1) ... [2023-11-17 16:39:40,700 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:39:40" (1/1) ... [2023-11-17 16:39:40,701 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:39:40" (1/1) ... [2023-11-17 16:39:40,704 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 16:39:40,704 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 16:39:40,705 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 16:39:40,705 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 16:39:40,705 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:39:40" (1/1) ... [2023-11-17 16:39:40,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:39:40,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:39:40,742 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 16:39:40,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 16:39:40,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 16:39:40,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 16:39:40,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-17 16:39:40,781 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-17 16:39:40,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 16:39:40,781 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 16:39:40,782 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 16:39:40,782 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 16:39:40,782 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 16:39:40,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 16:39:40,782 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-17 16:39:40,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 16:39:40,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 16:39:40,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 16:39:40,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 16:39:40,784 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 16:39:40,982 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 16:39:40,984 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 16:39:41,265 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 16:39:41,294 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 16:39:41,294 INFO L307 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-17 16:39:41,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:39:41 BoogieIcfgContainer [2023-11-17 16:39:41,296 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 16:39:41,298 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 16:39:41,298 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 16:39:41,301 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 16:39:41,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 04:39:40" (1/3) ... [2023-11-17 16:39:41,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e61767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:39:41, skipping insertion in model container [2023-11-17 16:39:41,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:39:40" (2/3) ... [2023-11-17 16:39:41,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e61767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:39:41, skipping insertion in model container [2023-11-17 16:39:41,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:39:41" (3/3) ... [2023-11-17 16:39:41,303 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2023-11-17 16:39:41,318 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 16:39:41,319 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 16:39:41,319 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 16:39:41,377 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 16:39:41,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 135 transitions, 284 flow [2023-11-17 16:39:41,462 INFO L124 PetriNetUnfolderBase]: 10/133 cut-off events. [2023-11-17 16:39:41,462 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 16:39:41,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 133 events. 10/133 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 155 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 83. Up to 3 conditions per place. [2023-11-17 16:39:41,468 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 135 transitions, 284 flow [2023-11-17 16:39:41,472 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 121 transitions, 254 flow [2023-11-17 16:39:41,475 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 16:39:41,487 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 121 transitions, 254 flow [2023-11-17 16:39:41,489 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 121 transitions, 254 flow [2023-11-17 16:39:41,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 121 transitions, 254 flow [2023-11-17 16:39:41,531 INFO L124 PetriNetUnfolderBase]: 8/121 cut-off events. [2023-11-17 16:39:41,532 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 16:39:41,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 121 events. 8/121 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 144 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2023-11-17 16:39:41,539 INFO L119 LiptonReduction]: Number of co-enabled transitions 2186 [2023-11-17 16:39:47,028 INFO L134 LiptonReduction]: Checked pairs total: 4018 [2023-11-17 16:39:47,028 INFO L136 LiptonReduction]: Total number of compositions: 98 [2023-11-17 16:39:47,041 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 16:39:47,047 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;@586ea3af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 16:39:47,047 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-17 16:39:47,053 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 16:39:47,054 INFO L124 PetriNetUnfolderBase]: 5/29 cut-off events. [2023-11-17 16:39:47,054 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 16:39:47,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:39:47,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:39:47,055 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:39:47,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:39:47,059 INFO L85 PathProgramCache]: Analyzing trace with hash -691204904, now seen corresponding path program 1 times [2023-11-17 16:39:47,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:39:47,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830883285] [2023-11-17 16:39:47,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:39:47,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:39:47,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:39:47,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:39:47,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:39:47,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830883285] [2023-11-17 16:39:47,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830883285] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:39:47,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:39:47,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 16:39:47,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814087579] [2023-11-17 16:39:47,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:39:47,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 16:39:47,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:39:47,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 16:39:47,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 16:39:47,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 233 [2023-11-17 16:39:47,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:47,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:39:47,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 233 [2023-11-17 16:39:47,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:39:47,527 INFO L124 PetriNetUnfolderBase]: 249/514 cut-off events. [2023-11-17 16:39:47,528 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-17 16:39:47,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 938 conditions, 514 events. 249/514 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2437 event pairs, 90 based on Foata normal form. 32/480 useless extension candidates. Maximal degree in co-relation 856. Up to 256 conditions per place. [2023-11-17 16:39:47,537 INFO L140 encePairwiseOnDemand]: 229/233 looper letters, 36 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-11-17 16:39:47,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 44 transitions, 179 flow [2023-11-17 16:39:47,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 16:39:47,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 16:39:47,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 374 transitions. [2023-11-17 16:39:47,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5350500715307582 [2023-11-17 16:39:47,558 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 374 transitions. [2023-11-17 16:39:47,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 374 transitions. [2023-11-17 16:39:47,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:39:47,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 374 transitions. [2023-11-17 16:39:47,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:47,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:47,575 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:47,576 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 72 flow. Second operand 3 states and 374 transitions. [2023-11-17 16:39:47,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 44 transitions, 179 flow [2023-11-17 16:39:47,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 44 transitions, 169 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 16:39:47,582 INFO L231 Difference]: Finished difference. Result has 31 places, 30 transitions, 74 flow [2023-11-17 16:39:47,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=31, PETRI_TRANSITIONS=30} [2023-11-17 16:39:47,587 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2023-11-17 16:39:47,588 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 30 transitions, 74 flow [2023-11-17 16:39:47,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:47,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:39:47,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:39:47,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 16:39:47,589 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:39:47,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:39:47,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1436196058, now seen corresponding path program 1 times [2023-11-17 16:39:47,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:39:47,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833402978] [2023-11-17 16:39:47,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:39:47,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:39:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:39:47,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:39:47,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:39:47,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833402978] [2023-11-17 16:39:47,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833402978] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:39:47,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:39:47,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 16:39:47,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491494442] [2023-11-17 16:39:47,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:39:47,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 16:39:47,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:39:47,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 16:39:47,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 16:39:47,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 233 [2023-11-17 16:39:47,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 30 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:47,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:39:47,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 233 [2023-11-17 16:39:47,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:39:47,842 INFO L124 PetriNetUnfolderBase]: 417/744 cut-off events. [2023-11-17 16:39:47,843 INFO L125 PetriNetUnfolderBase]: For 161/161 co-relation queries the response was YES. [2023-11-17 16:39:47,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1539 conditions, 744 events. 417/744 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3348 event pairs, 165 based on Foata normal form. 0/708 useless extension candidates. Maximal degree in co-relation 756. Up to 395 conditions per place. [2023-11-17 16:39:47,846 INFO L140 encePairwiseOnDemand]: 230/233 looper letters, 38 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-11-17 16:39:47,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 46 transitions, 197 flow [2023-11-17 16:39:47,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 16:39:47,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 16:39:47,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 366 transitions. [2023-11-17 16:39:47,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5236051502145923 [2023-11-17 16:39:47,848 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 366 transitions. [2023-11-17 16:39:47,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 366 transitions. [2023-11-17 16:39:47,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:39:47,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 366 transitions. [2023-11-17 16:39:47,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:47,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:47,852 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:47,852 INFO L175 Difference]: Start difference. First operand has 31 places, 30 transitions, 74 flow. Second operand 3 states and 366 transitions. [2023-11-17 16:39:47,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 46 transitions, 197 flow [2023-11-17 16:39:47,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 46 transitions, 193 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 16:39:47,854 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 84 flow [2023-11-17 16:39:47,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2023-11-17 16:39:47,854 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2023-11-17 16:39:47,854 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 84 flow [2023-11-17 16:39:47,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:47,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:39:47,855 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] [2023-11-17 16:39:47,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 16:39:47,855 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:39:47,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:39:47,856 INFO L85 PathProgramCache]: Analyzing trace with hash 224549234, now seen corresponding path program 1 times [2023-11-17 16:39:47,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:39:47,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664814886] [2023-11-17 16:39:47,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:39:47,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:39:47,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:39:48,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:39:48,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:39:48,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664814886] [2023-11-17 16:39:48,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664814886] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:39:48,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539667105] [2023-11-17 16:39:48,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:39:48,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:39:48,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:39:48,023 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:39:48,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 16:39:48,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:39:48,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-17 16:39:48,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:39:48,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:39:48,215 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:39:48,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:39:48,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539667105] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:39:48,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:39:48,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-17 16:39:48,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634235621] [2023-11-17 16:39:48,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:39:48,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:39:48,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:39:48,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:39:48,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:39:48,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 233 [2023-11-17 16:39:48,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 84 flow. Second operand has 7 states, 7 states have (on average 115.85714285714286) internal successors, (811), 7 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:48,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:39:48,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 233 [2023-11-17 16:39:48,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:39:48,516 INFO L124 PetriNetUnfolderBase]: 763/1564 cut-off events. [2023-11-17 16:39:48,516 INFO L125 PetriNetUnfolderBase]: For 307/307 co-relation queries the response was YES. [2023-11-17 16:39:48,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3081 conditions, 1564 events. 763/1564 cut-off events. For 307/307 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 8218 event pairs, 103 based on Foata normal form. 78/1542 useless extension candidates. Maximal degree in co-relation 1155. Up to 256 conditions per place. [2023-11-17 16:39:48,525 INFO L140 encePairwiseOnDemand]: 229/233 looper letters, 79 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2023-11-17 16:39:48,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 91 transitions, 422 flow [2023-11-17 16:39:48,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:39:48,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:39:48,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 749 transitions. [2023-11-17 16:39:48,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357653791130186 [2023-11-17 16:39:48,528 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 749 transitions. [2023-11-17 16:39:48,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 749 transitions. [2023-11-17 16:39:48,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:39:48,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 749 transitions. [2023-11-17 16:39:48,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 124.83333333333333) internal successors, (749), 6 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:48,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 233.0) internal successors, (1631), 7 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:48,536 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 233.0) internal successors, (1631), 7 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:48,536 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 84 flow. Second operand 6 states and 749 transitions. [2023-11-17 16:39:48,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 91 transitions, 422 flow [2023-11-17 16:39:48,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 91 transitions, 412 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 16:39:48,539 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 122 flow [2023-11-17 16:39:48,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=122, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2023-11-17 16:39:48,540 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2023-11-17 16:39:48,540 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 122 flow [2023-11-17 16:39:48,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 115.85714285714286) internal successors, (811), 7 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:48,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:39:48,541 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:39:48,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-17 16:39:48,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:39:48,749 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:39:48,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:39:48,750 INFO L85 PathProgramCache]: Analyzing trace with hash -2075325652, now seen corresponding path program 2 times [2023-11-17 16:39:48,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:39:48,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815324554] [2023-11-17 16:39:48,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:39:48,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:39:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:39:48,798 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-17 16:39:48,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:39:48,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815324554] [2023-11-17 16:39:48,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815324554] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:39:48,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:39:48,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 16:39:48,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091633998] [2023-11-17 16:39:48,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:39:48,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 16:39:48,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:39:48,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 16:39:48,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 16:39:48,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 233 [2023-11-17 16:39:48,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:48,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:39:48,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 233 [2023-11-17 16:39:48,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:39:49,067 INFO L124 PetriNetUnfolderBase]: 1918/3101 cut-off events. [2023-11-17 16:39:49,068 INFO L125 PetriNetUnfolderBase]: For 1254/1254 co-relation queries the response was YES. [2023-11-17 16:39:49,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7406 conditions, 3101 events. 1918/3101 cut-off events. For 1254/1254 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 14135 event pairs, 728 based on Foata normal form. 0/2903 useless extension candidates. Maximal degree in co-relation 4239. Up to 2159 conditions per place. [2023-11-17 16:39:49,084 INFO L140 encePairwiseOnDemand]: 228/233 looper letters, 50 selfloop transitions, 3 changer transitions 3/56 dead transitions. [2023-11-17 16:39:49,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 56 transitions, 319 flow [2023-11-17 16:39:49,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 16:39:49,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 16:39:49,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 370 transitions. [2023-11-17 16:39:49,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5293276108726752 [2023-11-17 16:39:49,086 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 370 transitions. [2023-11-17 16:39:49,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 370 transitions. [2023-11-17 16:39:49,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:39:49,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 370 transitions. [2023-11-17 16:39:49,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:49,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:49,090 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:49,090 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 122 flow. Second operand 3 states and 370 transitions. [2023-11-17 16:39:49,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 56 transitions, 319 flow [2023-11-17 16:39:49,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 56 transitions, 304 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-17 16:39:49,098 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 138 flow [2023-11-17 16:39:49,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2023-11-17 16:39:49,099 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 12 predicate places. [2023-11-17 16:39:49,100 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 138 flow [2023-11-17 16:39:49,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:49,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:39:49,100 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:39:49,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 16:39:49,101 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:39:49,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:39:49,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1792803254, now seen corresponding path program 3 times [2023-11-17 16:39:49,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:39:49,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584553812] [2023-11-17 16:39:49,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:39:49,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:39:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:39:49,204 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-17 16:39:49,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:39:49,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584553812] [2023-11-17 16:39:49,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584553812] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:39:49,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:39:49,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 16:39:49,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356137496] [2023-11-17 16:39:49,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:39:49,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 16:39:49,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:39:49,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 16:39:49,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 16:39:49,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 233 [2023-11-17 16:39:49,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:49,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:39:49,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 233 [2023-11-17 16:39:49,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:39:49,331 INFO L124 PetriNetUnfolderBase]: 465/1134 cut-off events. [2023-11-17 16:39:49,332 INFO L125 PetriNetUnfolderBase]: For 748/748 co-relation queries the response was YES. [2023-11-17 16:39:49,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2673 conditions, 1134 events. 465/1134 cut-off events. For 748/748 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6054 event pairs, 155 based on Foata normal form. 152/1286 useless extension candidates. Maximal degree in co-relation 1809. Up to 462 conditions per place. [2023-11-17 16:39:49,338 INFO L140 encePairwiseOnDemand]: 225/233 looper letters, 24 selfloop transitions, 13 changer transitions 0/45 dead transitions. [2023-11-17 16:39:49,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 45 transitions, 248 flow [2023-11-17 16:39:49,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 16:39:49,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 16:39:49,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2023-11-17 16:39:49,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5107296137339056 [2023-11-17 16:39:49,340 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2023-11-17 16:39:49,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2023-11-17 16:39:49,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:39:49,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2023-11-17 16:39:49,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-11-17 16:39:49,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:49,343 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:49,343 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 138 flow. Second operand 3 states and 357 transitions. [2023-11-17 16:39:49,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 45 transitions, 248 flow [2023-11-17 16:39:49,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 45 transitions, 242 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 16:39:49,346 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 158 flow [2023-11-17 16:39:49,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2023-11-17 16:39:49,347 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 12 predicate places. [2023-11-17 16:39:49,347 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 158 flow [2023-11-17 16:39:49,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:49,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:39:49,348 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:39:49,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 16:39:49,348 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:39:49,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:39:49,349 INFO L85 PathProgramCache]: Analyzing trace with hash 742341770, now seen corresponding path program 4 times [2023-11-17 16:39:49,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:39:49,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563300138] [2023-11-17 16:39:49,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:39:49,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:39:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:39:49,427 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-17 16:39:49,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:39:49,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563300138] [2023-11-17 16:39:49,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563300138] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:39:49,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234118370] [2023-11-17 16:39:49,428 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:39:49,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:39:49,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:39:49,430 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:39:49,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 16:39:49,539 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:39:49,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:39:49,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-17 16:39:49,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:39:49,568 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 16:39:49,568 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:39:49,600 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 16:39:49,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234118370] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:39:49,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:39:49,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-17 16:39:49,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046693835] [2023-11-17 16:39:49,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:39:49,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 16:39:49,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:39:49,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 16:39:49,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-17 16:39:49,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 233 [2023-11-17 16:39:49,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 158 flow. Second operand has 9 states, 9 states have (on average 104.22222222222223) internal successors, (938), 9 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:49,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:39:49,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 233 [2023-11-17 16:39:49,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:39:50,184 INFO L124 PetriNetUnfolderBase]: 963/2002 cut-off events. [2023-11-17 16:39:50,184 INFO L125 PetriNetUnfolderBase]: For 1347/1347 co-relation queries the response was YES. [2023-11-17 16:39:50,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5672 conditions, 2002 events. 963/2002 cut-off events. For 1347/1347 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 10201 event pairs, 85 based on Foata normal form. 226/2178 useless extension candidates. Maximal degree in co-relation 2812. Up to 470 conditions per place. [2023-11-17 16:39:50,195 INFO L140 encePairwiseOnDemand]: 221/233 looper letters, 176 selfloop transitions, 43 changer transitions 10/229 dead transitions. [2023-11-17 16:39:50,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 229 transitions, 1446 flow [2023-11-17 16:39:50,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-17 16:39:50,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-17 16:39:50,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2768 transitions. [2023-11-17 16:39:50,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45691647408385605 [2023-11-17 16:39:50,202 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2768 transitions. [2023-11-17 16:39:50,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2768 transitions. [2023-11-17 16:39:50,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:39:50,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2768 transitions. [2023-11-17 16:39:50,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 106.46153846153847) internal successors, (2768), 26 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:50,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 233.0) internal successors, (6291), 27 states have internal predecessors, (6291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:50,216 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 233.0) internal successors, (6291), 27 states have internal predecessors, (6291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:50,217 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 158 flow. Second operand 26 states and 2768 transitions. [2023-11-17 16:39:50,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 229 transitions, 1446 flow [2023-11-17 16:39:50,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 229 transitions, 1356 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 16:39:50,223 INFO L231 Difference]: Finished difference. Result has 80 places, 77 transitions, 518 flow [2023-11-17 16:39:50,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=518, PETRI_PLACES=80, PETRI_TRANSITIONS=77} [2023-11-17 16:39:50,224 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 48 predicate places. [2023-11-17 16:39:50,224 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 77 transitions, 518 flow [2023-11-17 16:39:50,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 104.22222222222223) internal successors, (938), 9 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:50,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:39:50,225 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:39:50,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-17 16:39:50,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-17 16:39:50,434 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:39:50,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:39:50,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1777657538, now seen corresponding path program 5 times [2023-11-17 16:39:50,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:39:50,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628820705] [2023-11-17 16:39:50,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:39:50,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:39:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:39:50,660 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 39 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-17 16:39:50,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:39:50,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628820705] [2023-11-17 16:39:50,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628820705] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:39:50,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121324161] [2023-11-17 16:39:50,661 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:39:50,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:39:50,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:39:50,662 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:39:50,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 16:39:50,801 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-11-17 16:39:50,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:39:50,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 16:39:50,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:39:50,860 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-17 16:39:50,861 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 16:39:50,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121324161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:39:50,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 16:39:50,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2023-11-17 16:39:50,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366413118] [2023-11-17 16:39:50,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:39:50,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 16:39:50,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:39:50,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 16:39:50,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-17 16:39:50,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 233 [2023-11-17 16:39:50,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 77 transitions, 518 flow. Second operand has 8 states, 8 states have (on average 109.75) internal successors, (878), 8 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:50,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:39:50,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 233 [2023-11-17 16:39:50,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:39:51,216 INFO L124 PetriNetUnfolderBase]: 763/1598 cut-off events. [2023-11-17 16:39:51,216 INFO L125 PetriNetUnfolderBase]: For 3997/3997 co-relation queries the response was YES. [2023-11-17 16:39:51,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5738 conditions, 1598 events. 763/1598 cut-off events. For 3997/3997 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7416 event pairs, 201 based on Foata normal form. 34/1632 useless extension candidates. Maximal degree in co-relation 3652. Up to 671 conditions per place. [2023-11-17 16:39:51,226 INFO L140 encePairwiseOnDemand]: 223/233 looper letters, 66 selfloop transitions, 40 changer transitions 0/106 dead transitions. [2023-11-17 16:39:51,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 106 transitions, 871 flow [2023-11-17 16:39:51,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:39:51,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:39:51,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 796 transitions. [2023-11-17 16:39:51,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880441446965052 [2023-11-17 16:39:51,229 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 796 transitions. [2023-11-17 16:39:51,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 796 transitions. [2023-11-17 16:39:51,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:39:51,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 796 transitions. [2023-11-17 16:39:51,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 113.71428571428571) internal successors, (796), 7 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:51,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 233.0) internal successors, (1864), 8 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:51,234 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 233.0) internal successors, (1864), 8 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:51,234 INFO L175 Difference]: Start difference. First operand has 80 places, 77 transitions, 518 flow. Second operand 7 states and 796 transitions. [2023-11-17 16:39:51,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 106 transitions, 871 flow [2023-11-17 16:39:51,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 106 transitions, 851 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-17 16:39:51,243 INFO L231 Difference]: Finished difference. Result has 86 places, 79 transitions, 638 flow [2023-11-17 16:39:51,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=638, PETRI_PLACES=86, PETRI_TRANSITIONS=79} [2023-11-17 16:39:51,244 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 54 predicate places. [2023-11-17 16:39:51,244 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 79 transitions, 638 flow [2023-11-17 16:39:51,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 109.75) internal successors, (878), 8 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:51,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:39:51,245 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:39:51,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 16:39:51,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:39:51,452 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:39:51,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:39:51,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1032513380, now seen corresponding path program 6 times [2023-11-17 16:39:51,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:39:51,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68552437] [2023-11-17 16:39:51,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:39:51,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:39:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:39:51,731 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 31 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-17 16:39:51,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:39:51,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68552437] [2023-11-17 16:39:51,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68552437] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:39:51,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250701843] [2023-11-17 16:39:51,732 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:39:51,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:39:51,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:39:51,733 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:39:51,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 16:39:51,947 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-11-17 16:39:51,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:39:51,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-17 16:39:51,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:39:52,009 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 31 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-17 16:39:52,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:39:52,064 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 31 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-17 16:39:52,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250701843] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:39:52,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:39:52,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2023-11-17 16:39:52,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232852550] [2023-11-17 16:39:52,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:39:52,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:39:52,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:39:52,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:39:52,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-17 16:39:52,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 233 [2023-11-17 16:39:52,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 79 transitions, 638 flow. Second operand has 6 states, 6 states have (on average 110.5) internal successors, (663), 6 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:52,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:39:52,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 233 [2023-11-17 16:39:52,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:39:52,277 INFO L124 PetriNetUnfolderBase]: 408/865 cut-off events. [2023-11-17 16:39:52,280 INFO L125 PetriNetUnfolderBase]: For 2452/2452 co-relation queries the response was YES. [2023-11-17 16:39:52,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3294 conditions, 865 events. 408/865 cut-off events. For 2452/2452 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3042 event pairs, 122 based on Foata normal form. 28/893 useless extension candidates. Maximal degree in co-relation 1397. Up to 381 conditions per place. [2023-11-17 16:39:52,286 INFO L140 encePairwiseOnDemand]: 225/233 looper letters, 66 selfloop transitions, 32 changer transitions 0/98 dead transitions. [2023-11-17 16:39:52,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 98 transitions, 874 flow [2023-11-17 16:39:52,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:39:52,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:39:52,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 794 transitions. [2023-11-17 16:39:52,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48681790312691603 [2023-11-17 16:39:52,288 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 794 transitions. [2023-11-17 16:39:52,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 794 transitions. [2023-11-17 16:39:52,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:39:52,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 794 transitions. [2023-11-17 16:39:52,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 113.42857142857143) internal successors, (794), 7 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:52,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 233.0) internal successors, (1864), 8 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:52,293 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 233.0) internal successors, (1864), 8 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:52,294 INFO L175 Difference]: Start difference. First operand has 86 places, 79 transitions, 638 flow. Second operand 7 states and 794 transitions. [2023-11-17 16:39:52,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 98 transitions, 874 flow [2023-11-17 16:39:52,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 98 transitions, 804 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-17 16:39:52,301 INFO L231 Difference]: Finished difference. Result has 86 places, 71 transitions, 534 flow [2023-11-17 16:39:52,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=534, PETRI_PLACES=86, PETRI_TRANSITIONS=71} [2023-11-17 16:39:52,303 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 54 predicate places. [2023-11-17 16:39:52,303 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 71 transitions, 534 flow [2023-11-17 16:39:52,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.5) internal successors, (663), 6 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:52,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:39:52,304 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:39:52,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 16:39:52,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:39:52,513 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:39:52,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:39:52,514 INFO L85 PathProgramCache]: Analyzing trace with hash -925099906, now seen corresponding path program 7 times [2023-11-17 16:39:52,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:39:52,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421792545] [2023-11-17 16:39:52,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:39:52,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:39:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:39:52,957 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:39:52,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:39:52,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421792545] [2023-11-17 16:39:52,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421792545] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:39:52,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631288510] [2023-11-17 16:39:52,958 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 16:39:52,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:39:52,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:39:52,959 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:39:52,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-17 16:39:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:39:53,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-17 16:39:53,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:39:53,444 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:39:53,444 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:39:53,781 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:39:53,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631288510] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:39:53,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:39:53,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 29 [2023-11-17 16:39:53,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394511777] [2023-11-17 16:39:53,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:39:53,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-17 16:39:53,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:39:53,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-17 16:39:53,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2023-11-17 16:39:53,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 233 [2023-11-17 16:39:53,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 71 transitions, 534 flow. Second operand has 31 states, 31 states have (on average 108.19354838709677) internal successors, (3354), 31 states have internal predecessors, (3354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:53,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:39:53,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 233 [2023-11-17 16:39:53,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:39:54,560 INFO L124 PetriNetUnfolderBase]: 274/689 cut-off events. [2023-11-17 16:39:54,561 INFO L125 PetriNetUnfolderBase]: For 1952/1954 co-relation queries the response was YES. [2023-11-17 16:39:54,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2544 conditions, 689 events. 274/689 cut-off events. For 1952/1954 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2485 event pairs, 25 based on Foata normal form. 18/702 useless extension candidates. Maximal degree in co-relation 1513. Up to 127 conditions per place. [2023-11-17 16:39:54,564 INFO L140 encePairwiseOnDemand]: 226/233 looper letters, 0 selfloop transitions, 0 changer transitions 119/119 dead transitions. [2023-11-17 16:39:54,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 119 transitions, 923 flow [2023-11-17 16:39:54,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 16:39:54,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 16:39:54,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1345 transitions. [2023-11-17 16:39:54,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48104434907010013 [2023-11-17 16:39:54,569 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1345 transitions. [2023-11-17 16:39:54,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1345 transitions. [2023-11-17 16:39:54,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:39:54,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1345 transitions. [2023-11-17 16:39:54,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 112.08333333333333) internal successors, (1345), 12 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:54,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 233.0) internal successors, (3029), 13 states have internal predecessors, (3029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:54,577 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 233.0) internal successors, (3029), 13 states have internal predecessors, (3029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:54,577 INFO L175 Difference]: Start difference. First operand has 86 places, 71 transitions, 534 flow. Second operand 12 states and 1345 transitions. [2023-11-17 16:39:54,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 119 transitions, 923 flow [2023-11-17 16:39:54,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 119 transitions, 855 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-17 16:39:54,587 INFO L231 Difference]: Finished difference. Result has 90 places, 0 transitions, 0 flow [2023-11-17 16:39:54,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=90, PETRI_TRANSITIONS=0} [2023-11-17 16:39:54,588 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 58 predicate places. [2023-11-17 16:39:54,588 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 0 transitions, 0 flow [2023-11-17 16:39:54,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 108.19354838709677) internal successors, (3354), 31 states have internal predecessors, (3354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:39:54,592 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-17 16:39:54,592 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-17 16:39:54,593 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-17 16:39:54,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-17 16:39:54,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:39:54,800 INFO L445 BasicCegarLoop]: Path program histogram: [7, 1, 1] [2023-11-17 16:39:54,802 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 16:39:54,802 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 16:39:54,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 04:39:54 BasicIcfg [2023-11-17 16:39:54,805 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 16:39:54,805 INFO L158 Benchmark]: Toolchain (without parser) took 14677.02ms. Allocated memory was 181.4MB in the beginning and 399.5MB in the end (delta: 218.1MB). Free memory was 128.6MB in the beginning and 328.3MB in the end (delta: -199.7MB). Peak memory consumption was 222.8MB. Max. memory is 8.0GB. [2023-11-17 16:39:54,806 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 181.4MB. Free memory is still 132.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 16:39:54,806 INFO L158 Benchmark]: CACSL2BoogieTranslator took 486.26ms. Allocated memory is still 181.4MB. Free memory was 128.6MB in the beginning and 101.6MB in the end (delta: 26.9MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2023-11-17 16:39:54,806 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.37ms. Allocated memory is still 181.4MB. Free memory was 101.6MB in the beginning and 99.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 16:39:54,806 INFO L158 Benchmark]: Boogie Preprocessor took 37.92ms. Allocated memory is still 181.4MB. Free memory was 99.5MB in the beginning and 97.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 16:39:54,807 INFO L158 Benchmark]: RCFGBuilder took 591.18ms. Allocated memory was 181.4MB in the beginning and 328.2MB in the end (delta: 146.8MB). Free memory was 97.5MB in the beginning and 283.5MB in the end (delta: -186.0MB). Peak memory consumption was 17.0MB. Max. memory is 8.0GB. [2023-11-17 16:39:54,807 INFO L158 Benchmark]: TraceAbstraction took 13507.30ms. Allocated memory was 328.2MB in the beginning and 399.5MB in the end (delta: 71.3MB). Free memory was 282.9MB in the beginning and 328.3MB in the end (delta: -45.4MB). Peak memory consumption was 228.8MB. Max. memory is 8.0GB. [2023-11-17 16:39:54,808 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 181.4MB. Free memory is still 132.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 486.26ms. Allocated memory is still 181.4MB. Free memory was 128.6MB in the beginning and 101.6MB in the end (delta: 26.9MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 43.37ms. Allocated memory is still 181.4MB. Free memory was 101.6MB in the beginning and 99.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.92ms. Allocated memory is still 181.4MB. Free memory was 99.5MB in the beginning and 97.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 591.18ms. Allocated memory was 181.4MB in the beginning and 328.2MB in the end (delta: 146.8MB). Free memory was 97.5MB in the beginning and 283.5MB in the end (delta: -186.0MB). Peak memory consumption was 17.0MB. Max. memory is 8.0GB. * TraceAbstraction took 13507.30ms. Allocated memory was 328.2MB in the beginning and 399.5MB in the end (delta: 71.3MB). Free memory was 282.9MB in the beginning and 328.3MB in the end (delta: -45.4MB). Peak memory consumption was 228.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.5s, 120 PlacesBefore, 32 PlacesAfterwards, 121 TransitionsBefore, 30 TransitionsAfterwards, 2186 CoEnabledTransitionPairs, 6 FixpointIterations, 52 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 3 ChoiceCompositions, 98 TotalNumberOfCompositions, 4018 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2792, independent: 2656, independent conditional: 0, independent unconditional: 2656, dependent: 136, dependent conditional: 0, dependent unconditional: 136, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1529, independent: 1490, independent conditional: 0, independent unconditional: 1490, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1529, independent: 1464, independent conditional: 0, independent unconditional: 1464, dependent: 65, dependent conditional: 0, dependent unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 65, independent: 26, independent conditional: 0, independent unconditional: 26, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 111, independent: 34, independent conditional: 0, independent unconditional: 34, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2792, independent: 1166, independent conditional: 0, independent unconditional: 1166, dependent: 97, dependent conditional: 0, dependent unconditional: 97, unknown: 1529, unknown conditional: 0, unknown unconditional: 1529] , Statistics on independence cache: Total cache size (in pairs): 198, Positive cache size: 181, Positive conditional cache size: 0, Positive unconditional cache size: 181, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 919]: 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, 175 locations, 3 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: 13.4s, OverallIterations: 9, TraceHistogramMax: 4, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 459 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 459 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2657 IncrementalHoareTripleChecker+Invalid, 2686 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 3 mSDtfsCounter, 2657 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 473 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=638occurred in iteration=7, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 547 NumberOfCodeBlocks, 543 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 696 ConstructedInterpolants, 0 QuantifiedInterpolants, 2411 SizeOfPredicates, 17 NumberOfNonLiveVariables, 1512 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 18 InterpolantComputations, 5 PerfectInterpolantSequences, 493/726 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-17 16:39:54,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...