/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 06:33:53,342 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 06:33:53,425 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 06:33:53,429 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 06:33:53,430 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 06:33:53,462 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 06:33:53,462 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 06:33:53,467 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 06:33:53,468 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 06:33:53,471 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 06:33:53,472 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 06:33:53,472 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 06:33:53,472 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 06:33:53,473 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 06:33:53,474 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 06:33:53,474 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 06:33:53,474 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 06:33:53,474 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 06:33:53,475 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 06:33:53,475 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 06:33:53,475 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 06:33:53,475 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 06:33:53,476 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 06:33:53,476 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 06:33:53,477 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 06:33:53,477 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 06:33:53,477 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 06:33:53,477 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 06:33:53,477 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 06:33:53,478 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 06:33:53,479 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 06:33:53,479 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 06:33:53,479 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 06:33:53,479 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 06:33:53,479 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 06:33:53,480 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 06:33:53,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 06:33:53,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 06:33:53,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 06:33:53,849 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 06:33:53,849 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 06:33:53,850 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i [2023-08-24 06:33:54,949 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 06:33:55,244 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 06:33:55,250 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i [2023-08-24 06:33:55,271 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50d714fea/2d2000d1f921417eb32f906850a9a689/FLAGca9e248e0 [2023-08-24 06:33:55,287 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50d714fea/2d2000d1f921417eb32f906850a9a689 [2023-08-24 06:33:55,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 06:33:55,292 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 06:33:55,294 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 06:33:55,294 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 06:33:55,297 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 06:33:55,298 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:33:55" (1/1) ... [2023-08-24 06:33:55,299 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a2699ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:55, skipping insertion in model container [2023-08-24 06:33:55,299 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:33:55" (1/1) ... [2023-08-24 06:33:55,345 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 06:33:55,648 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i[30176,30189] [2023-08-24 06:33:55,665 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 06:33:55,678 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 06:33:55,705 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-24 06:33:55,706 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-24 06:33:55,724 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i[30176,30189] [2023-08-24 06:33:55,729 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 06:33:55,766 INFO L206 MainTranslator]: Completed translation [2023-08-24 06:33:55,767 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:55 WrapperNode [2023-08-24 06:33:55,767 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 06:33:55,768 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 06:33:55,768 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 06:33:55,768 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 06:33:55,774 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:55" (1/1) ... [2023-08-24 06:33:55,786 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:55" (1/1) ... [2023-08-24 06:33:55,810 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 82 [2023-08-24 06:33:55,811 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 06:33:55,811 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 06:33:55,812 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 06:33:55,812 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 06:33:55,819 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:55" (1/1) ... [2023-08-24 06:33:55,819 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:55" (1/1) ... [2023-08-24 06:33:55,822 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:55" (1/1) ... [2023-08-24 06:33:55,823 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:55" (1/1) ... [2023-08-24 06:33:55,827 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:55" (1/1) ... [2023-08-24 06:33:55,830 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:55" (1/1) ... [2023-08-24 06:33:55,832 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:55" (1/1) ... [2023-08-24 06:33:55,833 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:55" (1/1) ... [2023-08-24 06:33:55,835 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 06:33:55,836 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 06:33:55,836 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 06:33:55,836 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 06:33:55,837 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:55" (1/1) ... [2023-08-24 06:33:55,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 06:33:55,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 06:33:55,861 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-24 06:33:55,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-24 06:33:55,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 06:33:55,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 06:33:55,890 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 06:33:55,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 06:33:55,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 06:33:55,891 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-24 06:33:55,891 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-24 06:33:55,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 06:33:55,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 06:33:55,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 06:33:55,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 06:33:55,893 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 06:33:55,999 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 06:33:56,001 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 06:33:56,157 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 06:33:56,164 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 06:33:56,164 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-24 06:33:56,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:33:56 BoogieIcfgContainer [2023-08-24 06:33:56,166 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 06:33:56,168 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 06:33:56,168 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 06:33:56,171 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 06:33:56,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 06:33:55" (1/3) ... [2023-08-24 06:33:56,172 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@380db4fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:33:56, skipping insertion in model container [2023-08-24 06:33:56,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:55" (2/3) ... [2023-08-24 06:33:56,172 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@380db4fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:33:56, skipping insertion in model container [2023-08-24 06:33:56,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:33:56" (3/3) ... [2023-08-24 06:33:56,173 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_36-indirect_racefree.i [2023-08-24 06:33:56,189 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 06:33:56,189 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 06:33:56,189 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 06:33:56,246 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-24 06:33:56,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 113 transitions, 234 flow [2023-08-24 06:33:56,392 INFO L124 PetriNetUnfolderBase]: 17/150 cut-off events. [2023-08-24 06:33:56,393 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-24 06:33:56,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 150 events. 17/150 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 356 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 74. Up to 4 conditions per place. [2023-08-24 06:33:56,401 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 113 transitions, 234 flow [2023-08-24 06:33:56,405 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 108 transitions, 221 flow [2023-08-24 06:33:56,408 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:33:56,420 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 108 transitions, 221 flow [2023-08-24 06:33:56,423 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 108 transitions, 221 flow [2023-08-24 06:33:56,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 108 transitions, 221 flow [2023-08-24 06:33:56,476 INFO L124 PetriNetUnfolderBase]: 16/145 cut-off events. [2023-08-24 06:33:56,476 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 06:33:56,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 145 events. 16/145 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 341 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 74. Up to 4 conditions per place. [2023-08-24 06:33:56,479 INFO L119 LiptonReduction]: Number of co-enabled transitions 2752 [2023-08-24 06:33:59,585 INFO L134 LiptonReduction]: Checked pairs total: 4924 [2023-08-24 06:33:59,585 INFO L136 LiptonReduction]: Total number of compositions: 91 [2023-08-24 06:33:59,596 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:33:59,601 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@b87af8f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:33:59,602 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:33:59,605 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:33:59,605 INFO L124 PetriNetUnfolderBase]: 2/19 cut-off events. [2023-08-24 06:33:59,605 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 06:33:59,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:33:59,606 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-24 06:33:59,606 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:33:59,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:33:59,610 INFO L85 PathProgramCache]: Analyzing trace with hash -104804688, now seen corresponding path program 1 times [2023-08-24 06:33:59,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:33:59,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811575024] [2023-08-24 06:33:59,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:33:59,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:33:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:59,717 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:33:59,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:59,757 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:33:59,758 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:33:59,759 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:33:59,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 06:33:59,761 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:33:59,763 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:33:59,764 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:33:59,764 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-24 06:33:59,782 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-24 06:33:59,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 147 transitions, 312 flow [2023-08-24 06:33:59,830 INFO L124 PetriNetUnfolderBase]: 31/246 cut-off events. [2023-08-24 06:33:59,830 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-24 06:33:59,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 246 events. 31/246 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 731 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 152. Up to 8 conditions per place. [2023-08-24 06:33:59,835 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 147 transitions, 312 flow [2023-08-24 06:33:59,838 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 147 transitions, 312 flow [2023-08-24 06:33:59,838 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:33:59,839 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 147 transitions, 312 flow [2023-08-24 06:33:59,839 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 147 transitions, 312 flow [2023-08-24 06:33:59,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 147 transitions, 312 flow [2023-08-24 06:33:59,864 INFO L124 PetriNetUnfolderBase]: 31/246 cut-off events. [2023-08-24 06:33:59,864 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-24 06:33:59,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 246 events. 31/246 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 731 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 152. Up to 8 conditions per place. [2023-08-24 06:33:59,871 INFO L119 LiptonReduction]: Number of co-enabled transitions 8256 [2023-08-24 06:34:02,723 INFO L134 LiptonReduction]: Checked pairs total: 17909 [2023-08-24 06:34:02,723 INFO L136 LiptonReduction]: Total number of compositions: 111 [2023-08-24 06:34:02,726 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:34:02,727 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@b87af8f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:34:02,727 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:34:02,732 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:34:02,732 INFO L124 PetriNetUnfolderBase]: 12/58 cut-off events. [2023-08-24 06:34:02,732 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 06:34:02,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:34:02,732 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-24 06:34:02,733 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:34:02,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:34:02,733 INFO L85 PathProgramCache]: Analyzing trace with hash 2078806508, now seen corresponding path program 1 times [2023-08-24 06:34:02,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:34:02,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150738410] [2023-08-24 06:34:02,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:34:02,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:34:02,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:34:02,775 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:34:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:34:02,802 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:34:02,802 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:34:02,802 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:34:02,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 06:34:02,802 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:34:02,803 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:34:02,803 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:34:02,803 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-24 06:34:02,822 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-24 06:34:02,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 181 transitions, 392 flow [2023-08-24 06:34:02,866 INFO L124 PetriNetUnfolderBase]: 50/375 cut-off events. [2023-08-24 06:34:02,867 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-24 06:34:02,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 375 events. 50/375 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1256 event pairs, 1 based on Foata normal form. 0/317 useless extension candidates. Maximal degree in co-relation 254. Up to 16 conditions per place. [2023-08-24 06:34:02,870 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 181 transitions, 392 flow [2023-08-24 06:34:02,872 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 181 transitions, 392 flow [2023-08-24 06:34:02,872 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:34:02,872 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 181 transitions, 392 flow [2023-08-24 06:34:02,873 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 181 transitions, 392 flow [2023-08-24 06:34:02,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 181 transitions, 392 flow [2023-08-24 06:34:02,907 INFO L124 PetriNetUnfolderBase]: 50/375 cut-off events. [2023-08-24 06:34:02,907 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-24 06:34:02,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 375 events. 50/375 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1256 event pairs, 1 based on Foata normal form. 0/317 useless extension candidates. Maximal degree in co-relation 254. Up to 16 conditions per place. [2023-08-24 06:34:02,921 INFO L119 LiptonReduction]: Number of co-enabled transitions 15744 [2023-08-24 06:34:05,665 INFO L134 LiptonReduction]: Checked pairs total: 37929 [2023-08-24 06:34:05,665 INFO L136 LiptonReduction]: Total number of compositions: 130 [2023-08-24 06:34:05,667 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:34:05,668 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@b87af8f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:34:05,668 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:34:05,675 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:34:05,675 INFO L124 PetriNetUnfolderBase]: 21/94 cut-off events. [2023-08-24 06:34:05,675 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-24 06:34:05,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:34:05,675 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-24 06:34:05,676 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:34:05,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:34:05,676 INFO L85 PathProgramCache]: Analyzing trace with hash -194687650, now seen corresponding path program 1 times [2023-08-24 06:34:05,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:34:05,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331932027] [2023-08-24 06:34:05,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:34:05,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:34:05,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:34:05,702 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:34:05,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:34:05,737 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:34:05,738 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:34:05,738 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:34:05,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 06:34:05,738 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:34:05,739 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:34:05,739 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:34:05,739 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-24 06:34:05,772 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-24 06:34:05,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 215 transitions, 474 flow [2023-08-24 06:34:05,865 INFO L124 PetriNetUnfolderBase]: 81/572 cut-off events. [2023-08-24 06:34:05,866 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-24 06:34:05,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 572 events. 81/572 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2194 event pairs, 6 based on Foata normal form. 0/486 useless extension candidates. Maximal degree in co-relation 395. Up to 32 conditions per place. [2023-08-24 06:34:05,878 INFO L82 GeneralOperation]: Start removeDead. Operand has 191 places, 215 transitions, 474 flow [2023-08-24 06:34:05,882 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 215 transitions, 474 flow [2023-08-24 06:34:05,882 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:34:05,882 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 191 places, 215 transitions, 474 flow [2023-08-24 06:34:05,882 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 191 places, 215 transitions, 474 flow [2023-08-24 06:34:05,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 215 transitions, 474 flow [2023-08-24 06:34:05,948 INFO L124 PetriNetUnfolderBase]: 81/572 cut-off events. [2023-08-24 06:34:05,948 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-24 06:34:05,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 572 events. 81/572 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2194 event pairs, 6 based on Foata normal form. 0/486 useless extension candidates. Maximal degree in co-relation 395. Up to 32 conditions per place. [2023-08-24 06:34:05,974 INFO L119 LiptonReduction]: Number of co-enabled transitions 25472 [2023-08-24 06:34:08,822 INFO L134 LiptonReduction]: Checked pairs total: 57900 [2023-08-24 06:34:08,823 INFO L136 LiptonReduction]: Total number of compositions: 152 [2023-08-24 06:34:08,824 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:34:08,825 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@b87af8f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:34:08,825 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:34:08,835 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:34:08,835 INFO L124 PetriNetUnfolderBase]: 31/133 cut-off events. [2023-08-24 06:34:08,835 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-08-24 06:34:08,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:34:08,835 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-24 06:34:08,836 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:34:08,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:34:08,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1754103210, now seen corresponding path program 1 times [2023-08-24 06:34:08,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:34:08,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871365780] [2023-08-24 06:34:08,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:34:08,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:34:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:34:08,863 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:34:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:34:08,886 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:34:08,887 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:34:08,887 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:34:08,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 06:34:08,887 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:34:08,888 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:34:08,888 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:34:08,888 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-24 06:34:08,909 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-24 06:34:08,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 249 transitions, 558 flow [2023-08-24 06:34:09,029 INFO L124 PetriNetUnfolderBase]: 140/909 cut-off events. [2023-08-24 06:34:09,029 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-24 06:34:09,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1020 conditions, 909 events. 140/909 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4087 event pairs, 23 based on Foata normal form. 0/779 useless extension candidates. Maximal degree in co-relation 617. Up to 80 conditions per place. [2023-08-24 06:34:09,044 INFO L82 GeneralOperation]: Start removeDead. Operand has 220 places, 249 transitions, 558 flow [2023-08-24 06:34:09,053 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 249 transitions, 558 flow [2023-08-24 06:34:09,053 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:34:09,053 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 220 places, 249 transitions, 558 flow [2023-08-24 06:34:09,053 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 220 places, 249 transitions, 558 flow [2023-08-24 06:34:09,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 249 transitions, 558 flow [2023-08-24 06:34:09,165 INFO L124 PetriNetUnfolderBase]: 140/909 cut-off events. [2023-08-24 06:34:09,165 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-24 06:34:09,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1020 conditions, 909 events. 140/909 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4087 event pairs, 23 based on Foata normal form. 0/779 useless extension candidates. Maximal degree in co-relation 617. Up to 80 conditions per place. [2023-08-24 06:34:09,233 INFO L119 LiptonReduction]: Number of co-enabled transitions 37440 [2023-08-24 06:34:12,231 INFO L134 LiptonReduction]: Checked pairs total: 101347 [2023-08-24 06:34:12,231 INFO L136 LiptonReduction]: Total number of compositions: 169 [2023-08-24 06:34:12,233 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:34:12,234 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@b87af8f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:34:12,234 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:34:12,247 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:34:12,248 INFO L124 PetriNetUnfolderBase]: 43/182 cut-off events. [2023-08-24 06:34:12,248 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-24 06:34:12,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:34:12,248 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:34:12,248 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:34:12,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:34:12,249 INFO L85 PathProgramCache]: Analyzing trace with hash -515348986, now seen corresponding path program 1 times [2023-08-24 06:34:12,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:34:12,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591821874] [2023-08-24 06:34:12,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:34:12,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:34:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:34:12,278 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:34:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:34:12,299 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:34:12,299 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:34:12,299 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:34:12,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 06:34:12,300 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:34:12,300 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:34:12,300 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:34:12,301 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-24 06:34:12,336 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-24 06:34:12,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 283 transitions, 644 flow [2023-08-24 06:34:12,559 INFO L124 PetriNetUnfolderBase]: 263/1534 cut-off events. [2023-08-24 06:34:12,559 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-24 06:34:12,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1766 conditions, 1534 events. 263/1534 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 8492 event pairs, 72 based on Foata normal form. 0/1328 useless extension candidates. Maximal degree in co-relation 1008. Up to 192 conditions per place. [2023-08-24 06:34:12,590 INFO L82 GeneralOperation]: Start removeDead. Operand has 249 places, 283 transitions, 644 flow [2023-08-24 06:34:12,607 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 249 places, 283 transitions, 644 flow [2023-08-24 06:34:12,607 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:34:12,607 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 249 places, 283 transitions, 644 flow [2023-08-24 06:34:12,607 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 249 places, 283 transitions, 644 flow [2023-08-24 06:34:12,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 283 transitions, 644 flow [2023-08-24 06:34:12,813 INFO L124 PetriNetUnfolderBase]: 263/1534 cut-off events. [2023-08-24 06:34:12,814 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-24 06:34:12,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1766 conditions, 1534 events. 263/1534 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 8492 event pairs, 72 based on Foata normal form. 0/1328 useless extension candidates. Maximal degree in co-relation 1008. Up to 192 conditions per place. [2023-08-24 06:34:12,906 INFO L119 LiptonReduction]: Number of co-enabled transitions 51648 [2023-08-24 06:34:15,901 INFO L134 LiptonReduction]: Checked pairs total: 127151 [2023-08-24 06:34:15,901 INFO L136 LiptonReduction]: Total number of compositions: 191 [2023-08-24 06:34:15,904 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:34:15,905 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@b87af8f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:34:15,905 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:34:15,924 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:34:15,924 INFO L124 PetriNetUnfolderBase]: 58/240 cut-off events. [2023-08-24 06:34:15,924 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2023-08-24 06:34:15,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:34:15,924 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:34:15,924 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:34:15,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:34:15,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1630957283, now seen corresponding path program 1 times [2023-08-24 06:34:15,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:34:15,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290884454] [2023-08-24 06:34:15,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:34:15,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:34:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:34:15,991 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:34:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:34:16,045 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:34:16,045 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:34:16,045 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:34:16,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 06:34:16,046 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:34:16,049 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:34:16,049 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:34:16,049 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-24 06:34:16,087 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-24 06:34:16,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 278 places, 317 transitions, 732 flow [2023-08-24 06:34:16,562 INFO L124 PetriNetUnfolderBase]: 530/2751 cut-off events. [2023-08-24 06:34:16,562 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-24 06:34:16,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3249 conditions, 2751 events. 530/2751 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 18515 event pairs, 201 based on Foata normal form. 0/2405 useless extension candidates. Maximal degree in co-relation 1752. Up to 448 conditions per place. [2023-08-24 06:34:16,634 INFO L82 GeneralOperation]: Start removeDead. Operand has 278 places, 317 transitions, 732 flow [2023-08-24 06:34:16,665 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 278 places, 317 transitions, 732 flow [2023-08-24 06:34:16,665 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:34:16,665 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 278 places, 317 transitions, 732 flow [2023-08-24 06:34:16,665 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 278 places, 317 transitions, 732 flow [2023-08-24 06:34:16,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 278 places, 317 transitions, 732 flow [2023-08-24 06:34:17,157 INFO L124 PetriNetUnfolderBase]: 530/2751 cut-off events. [2023-08-24 06:34:17,157 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-24 06:34:17,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3249 conditions, 2751 events. 530/2751 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 18515 event pairs, 201 based on Foata normal form. 0/2405 useless extension candidates. Maximal degree in co-relation 1752. Up to 448 conditions per place. [2023-08-24 06:34:17,341 INFO L119 LiptonReduction]: Number of co-enabled transitions 68096 [2023-08-24 06:34:20,606 INFO L134 LiptonReduction]: Checked pairs total: 189110 [2023-08-24 06:34:20,607 INFO L136 LiptonReduction]: Total number of compositions: 210 [2023-08-24 06:34:20,609 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:34:20,612 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@b87af8f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:34:20,612 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:34:20,631 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:34:20,632 INFO L124 PetriNetUnfolderBase]: 78/318 cut-off events. [2023-08-24 06:34:20,632 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2023-08-24 06:34:20,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:34:20,632 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:34:20,632 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:34:20,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:34:20,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1765170419, now seen corresponding path program 1 times [2023-08-24 06:34:20,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:34:20,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524198482] [2023-08-24 06:34:20,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:34:20,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:34:20,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:34:20,660 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:34:20,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:34:20,679 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:34:20,679 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:34:20,679 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:34:20,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 06:34:20,679 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:34:20,680 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:34:20,680 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:34:20,680 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-24 06:34:20,708 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-24 06:34:20,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 307 places, 351 transitions, 822 flow [2023-08-24 06:34:21,740 INFO L124 PetriNetUnfolderBase]: 1117/5184 cut-off events. [2023-08-24 06:34:21,740 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-24 06:34:21,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6269 conditions, 5184 events. 1117/5184 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 41252 event pairs, 522 based on Foata normal form. 0/4570 useless extension candidates. Maximal degree in co-relation 3233. Up to 1024 conditions per place. [2023-08-24 06:34:21,897 INFO L82 GeneralOperation]: Start removeDead. Operand has 307 places, 351 transitions, 822 flow [2023-08-24 06:34:21,943 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 307 places, 351 transitions, 822 flow [2023-08-24 06:34:21,944 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:34:21,944 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 307 places, 351 transitions, 822 flow [2023-08-24 06:34:21,944 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 307 places, 351 transitions, 822 flow [2023-08-24 06:34:21,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 307 places, 351 transitions, 822 flow [2023-08-24 06:34:22,987 INFO L124 PetriNetUnfolderBase]: 1117/5184 cut-off events. [2023-08-24 06:34:22,987 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-24 06:34:23,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6269 conditions, 5184 events. 1117/5184 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 41252 event pairs, 522 based on Foata normal form. 0/4570 useless extension candidates. Maximal degree in co-relation 3233. Up to 1024 conditions per place. [2023-08-24 06:34:23,279 INFO L119 LiptonReduction]: Number of co-enabled transitions 86784 [2023-08-24 06:34:26,703 INFO L134 LiptonReduction]: Checked pairs total: 223605 [2023-08-24 06:34:26,704 INFO L136 LiptonReduction]: Total number of compositions: 233 [2023-08-24 06:34:26,705 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:34:26,705 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@b87af8f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:34:26,705 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:34:26,744 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:34:26,744 INFO L124 PetriNetUnfolderBase]: 107/423 cut-off events. [2023-08-24 06:34:26,744 INFO L125 PetriNetUnfolderBase]: For 202/202 co-relation queries the response was YES. [2023-08-24 06:34:26,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:34:26,745 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:34:26,745 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:34:26,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:34:26,745 INFO L85 PathProgramCache]: Analyzing trace with hash -351455429, now seen corresponding path program 1 times [2023-08-24 06:34:26,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:34:26,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181843433] [2023-08-24 06:34:26,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:34:26,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:34:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:34:26,795 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:34:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:34:26,831 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:34:26,831 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:34:26,831 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:34:26,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 06:34:26,832 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:34:26,832 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:34:26,832 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:34:26,834 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-24 06:34:26,872 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-24 06:34:26,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 336 places, 385 transitions, 914 flow [2023-08-24 06:34:28,769 INFO L124 PetriNetUnfolderBase]: 2408/10113 cut-off events. [2023-08-24 06:34:28,769 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-24 06:34:28,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12490 conditions, 10113 events. 2408/10113 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 93394 event pairs, 1291 based on Foata normal form. 0/8975 useless extension candidates. Maximal degree in co-relation 6251. Up to 2304 conditions per place. [2023-08-24 06:34:28,928 INFO L82 GeneralOperation]: Start removeDead. Operand has 336 places, 385 transitions, 914 flow [2023-08-24 06:34:29,090 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 336 places, 385 transitions, 914 flow [2023-08-24 06:34:29,091 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:34:29,091 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 336 places, 385 transitions, 914 flow [2023-08-24 06:34:29,091 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 336 places, 385 transitions, 914 flow [2023-08-24 06:34:29,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 336 places, 385 transitions, 914 flow [2023-08-24 06:34:30,940 INFO L124 PetriNetUnfolderBase]: 2408/10113 cut-off events. [2023-08-24 06:34:30,941 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-24 06:34:31,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12490 conditions, 10113 events. 2408/10113 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 93394 event pairs, 1291 based on Foata normal form. 0/8975 useless extension candidates. Maximal degree in co-relation 6251. Up to 2304 conditions per place. [2023-08-24 06:34:31,552 INFO L119 LiptonReduction]: Number of co-enabled transitions 107712 [2023-08-24 06:34:35,179 INFO L134 LiptonReduction]: Checked pairs total: 307504 [2023-08-24 06:34:35,179 INFO L136 LiptonReduction]: Total number of compositions: 250 [2023-08-24 06:34:35,180 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:34:35,180 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@b87af8f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:34:35,180 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:34:35,242 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:34:35,242 INFO L124 PetriNetUnfolderBase]: 152/575 cut-off events. [2023-08-24 06:34:35,242 INFO L125 PetriNetUnfolderBase]: For 309/309 co-relation queries the response was YES. [2023-08-24 06:34:35,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:34:35,242 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:34:35,242 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:34:35,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:34:35,243 INFO L85 PathProgramCache]: Analyzing trace with hash 100066933, now seen corresponding path program 1 times [2023-08-24 06:34:35,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:34:35,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014129761] [2023-08-24 06:34:35,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:34:35,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:34:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:34:35,266 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:34:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:34:35,286 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:34:35,286 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:34:35,286 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:34:35,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 06:34:35,287 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:34:35,287 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:34:35,287 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:34:35,287 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-24 06:34:35,323 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-24 06:34:35,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 365 places, 419 transitions, 1008 flow [2023-08-24 06:34:39,692 INFO L124 PetriNetUnfolderBase]: 5235/20162 cut-off events. [2023-08-24 06:34:39,693 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-24 06:34:40,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25368 conditions, 20162 events. 5235/20162 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 211166 event pairs, 3084 based on Foata normal form. 0/17988 useless extension candidates. Maximal degree in co-relation 12470. Up to 5120 conditions per place. [2023-08-24 06:34:40,041 INFO L82 GeneralOperation]: Start removeDead. Operand has 365 places, 419 transitions, 1008 flow [2023-08-24 06:34:40,222 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 365 places, 419 transitions, 1008 flow [2023-08-24 06:34:40,222 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:34:40,222 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 365 places, 419 transitions, 1008 flow [2023-08-24 06:34:40,222 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 365 places, 419 transitions, 1008 flow [2023-08-24 06:34:40,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 365 places, 419 transitions, 1008 flow [2023-08-24 06:34:44,427 INFO L124 PetriNetUnfolderBase]: 5235/20162 cut-off events. [2023-08-24 06:34:44,428 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-24 06:34:44,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25368 conditions, 20162 events. 5235/20162 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 211166 event pairs, 3084 based on Foata normal form. 0/17988 useless extension candidates. Maximal degree in co-relation 12470. Up to 5120 conditions per place. [2023-08-24 06:34:45,798 INFO L119 LiptonReduction]: Number of co-enabled transitions 130880 [2023-08-24 06:34:49,606 INFO L134 LiptonReduction]: Checked pairs total: 341578 [2023-08-24 06:34:49,606 INFO L136 LiptonReduction]: Total number of compositions: 270 [2023-08-24 06:34:49,608 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:34:49,608 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@b87af8f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:34:49,608 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:34:49,690 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:34:49,690 INFO L124 PetriNetUnfolderBase]: 226/800 cut-off events. [2023-08-24 06:34:49,690 INFO L125 PetriNetUnfolderBase]: For 469/469 co-relation queries the response was YES. [2023-08-24 06:34:49,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:34:49,690 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:34:49,691 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:34:49,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:34:49,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1963557516, now seen corresponding path program 1 times [2023-08-24 06:34:49,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:34:49,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953575124] [2023-08-24 06:34:49,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:34:49,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:34:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:34:49,721 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:34:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:34:49,759 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:34:49,759 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:34:49,759 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:34:49,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 06:34:49,759 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:34:49,760 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:34:49,760 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:34:49,760 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-24 06:34:49,793 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-24 06:34:49,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 394 places, 453 transitions, 1104 flow [2023-08-24 06:35:00,422 INFO L124 PetriNetUnfolderBase]: 11390/40707 cut-off events. [2023-08-24 06:35:00,423 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-24 06:35:01,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52071 conditions, 40707 events. 11390/40707 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 476938 event pairs, 7181 based on Foata normal form. 0/36473 useless extension candidates. Maximal degree in co-relation 25346. Up to 11264 conditions per place. [2023-08-24 06:35:01,701 INFO L82 GeneralOperation]: Start removeDead. Operand has 394 places, 453 transitions, 1104 flow [2023-08-24 06:35:02,164 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 394 places, 453 transitions, 1104 flow [2023-08-24 06:35:02,164 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:35:02,164 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 394 places, 453 transitions, 1104 flow [2023-08-24 06:35:02,165 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 394 places, 453 transitions, 1104 flow [2023-08-24 06:35:02,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 394 places, 453 transitions, 1104 flow [2023-08-24 06:35:11,578 INFO L124 PetriNetUnfolderBase]: 11390/40707 cut-off events. [2023-08-24 06:35:11,579 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-24 06:35:12,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52071 conditions, 40707 events. 11390/40707 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 476938 event pairs, 7181 based on Foata normal form. 0/36473 useless extension candidates. Maximal degree in co-relation 25346. Up to 11264 conditions per place. [2023-08-24 06:35:14,527 INFO L119 LiptonReduction]: Number of co-enabled transitions 156288 [2023-08-24 06:35:18,272 INFO L134 LiptonReduction]: Checked pairs total: 408238 [2023-08-24 06:35:18,272 INFO L136 LiptonReduction]: Total number of compositions: 290 [2023-08-24 06:35:18,274 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:35:18,274 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@b87af8f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:35:18,274 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:35:18,386 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:35:18,386 INFO L124 PetriNetUnfolderBase]: 351/1145 cut-off events. [2023-08-24 06:35:18,387 INFO L125 PetriNetUnfolderBase]: For 713/713 co-relation queries the response was YES. [2023-08-24 06:35:18,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:35:18,387 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:35:18,387 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:35:18,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:35:18,387 INFO L85 PathProgramCache]: Analyzing trace with hash -135499143, now seen corresponding path program 1 times [2023-08-24 06:35:18,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:35:18,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046032783] [2023-08-24 06:35:18,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:35:18,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:35:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:35:18,419 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:35:18,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:35:18,441 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:35:18,441 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:35:18,441 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:35:18,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-24 06:35:18,441 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:35:18,442 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:35:18,442 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:35:18,442 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-24 06:35:18,484 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-24 06:35:18,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 423 places, 487 transitions, 1202 flow [2023-08-24 06:35:39,664 INFO L124 PetriNetUnfolderBase]: 24713/82756 cut-off events. [2023-08-24 06:35:39,664 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-24 06:35:43,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107447 conditions, 82756 events. 24713/82756 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1417. Compared 1057082 event pairs, 16398 based on Foata normal form. 0/74414 useless extension candidates. Maximal degree in co-relation 52047. Up to 24576 conditions per place. [2023-08-24 06:35:43,601 INFO L82 GeneralOperation]: Start removeDead. Operand has 423 places, 487 transitions, 1202 flow [2023-08-24 06:35:45,284 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 423 places, 487 transitions, 1202 flow [2023-08-24 06:35:45,284 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:35:45,284 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 423 places, 487 transitions, 1202 flow [2023-08-24 06:35:45,284 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 423 places, 487 transitions, 1202 flow [2023-08-24 06:35:45,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 423 places, 487 transitions, 1202 flow [2023-08-24 06:36:08,104 INFO L124 PetriNetUnfolderBase]: 24713/82756 cut-off events. [2023-08-24 06:36:08,104 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-24 06:36:12,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107447 conditions, 82756 events. 24713/82756 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1417. Compared 1057082 event pairs, 16398 based on Foata normal form. 0/74414 useless extension candidates. Maximal degree in co-relation 52047. Up to 24576 conditions per place. [2023-08-24 06:36:18,237 INFO L119 LiptonReduction]: Number of co-enabled transitions 183936 [2023-08-24 06:36:22,116 INFO L134 LiptonReduction]: Checked pairs total: 484547 [2023-08-24 06:36:22,117 INFO L136 LiptonReduction]: Total number of compositions: 308 [2023-08-24 06:36:22,118 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:36:22,118 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@b87af8f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:36:22,118 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:36:22,278 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:36:22,278 INFO L124 PetriNetUnfolderBase]: 560/1671 cut-off events. [2023-08-24 06:36:22,278 INFO L125 PetriNetUnfolderBase]: For 1089/1089 co-relation queries the response was YES. [2023-08-24 06:36:22,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:36:22,278 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:36:22,278 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:36:22,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:36:22,279 INFO L85 PathProgramCache]: Analyzing trace with hash 133608101, now seen corresponding path program 1 times [2023-08-24 06:36:22,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:36:22,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520075124] [2023-08-24 06:36:22,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:36:22,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:36:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:36:22,304 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:36:22,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:36:22,326 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:36:22,326 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:36:22,326 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:36:22,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-24 06:36:22,326 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:36:22,327 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:36:22,327 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:36:22,327 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-24 06:36:22,364 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-24 06:36:22,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 452 places, 521 transitions, 1302 flow [2023-08-24 06:37:13,507 INFO L124 PetriNetUnfolderBase]: 53396/168837 cut-off events. [2023-08-24 06:37:13,508 INFO L125 PetriNetUnfolderBase]: For 53690/53690 co-relation queries the response was YES.