/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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 05:00:34,034 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 05:00:34,080 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 [2023-08-27 05:00:34,084 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 05:00:34,085 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 05:00:34,113 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 05:00:34,113 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 05:00:34,114 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 05:00:34,114 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 05:00:34,115 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 05:00:34,115 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 05:00:34,115 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 05:00:34,116 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 05:00:34,116 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 05:00:34,116 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 05:00:34,117 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 05:00:34,117 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 05:00:34,117 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 05:00:34,118 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 05:00:34,118 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 05:00:34,118 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 05:00:34,121 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 05:00:34,122 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 05:00:34,122 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 05:00:34,125 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 05:00:34,126 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 05:00:34,126 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 05:00:34,126 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 05:00:34,126 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 05:00:34,127 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 05:00:34,128 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 05:00:34,128 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 05:00:34,128 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 05:00:34,128 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 05:00:34,128 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 05:00:34,129 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 05:00:34,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 05:00:34,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 05:00:34,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 05:00:34,505 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 05:00:34,506 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 05:00:34,507 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i [2023-08-27 05:00:35,730 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 05:00:35,987 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 05:00:35,988 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i [2023-08-27 05:00:36,013 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49f1baee3/24ecea35ed254af2ac46b1e575275caf/FLAG85f7bfedf [2023-08-27 05:00:36,029 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49f1baee3/24ecea35ed254af2ac46b1e575275caf [2023-08-27 05:00:36,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 05:00:36,035 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 05:00:36,038 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 05:00:36,039 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 05:00:36,041 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 05:00:36,042 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:00:36" (1/1) ... [2023-08-27 05:00:36,043 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@636334ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:00:36, skipping insertion in model container [2023-08-27 05:00:36,043 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:00:36" (1/1) ... [2023-08-27 05:00:36,096 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 05:00:36,448 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 05:00:36,458 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 05:00:36,473 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 05:00:36,474 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 05:00:36,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 05:00:36,526 INFO L206 MainTranslator]: Completed translation [2023-08-27 05:00:36,526 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:00:36 WrapperNode [2023-08-27 05:00:36,526 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 05:00:36,527 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 05:00:36,527 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 05:00:36,528 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 05:00:36,533 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:00:36" (1/1) ... [2023-08-27 05:00:36,544 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:00:36" (1/1) ... [2023-08-27 05:00:36,569 INFO L138 Inliner]: procedures = 172, calls = 38, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 228 [2023-08-27 05:00:36,570 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 05:00:36,570 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 05:00:36,571 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 05:00:36,571 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 05:00:36,578 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:00:36" (1/1) ... [2023-08-27 05:00:36,578 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:00:36" (1/1) ... [2023-08-27 05:00:36,582 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:00:36" (1/1) ... [2023-08-27 05:00:36,582 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:00:36" (1/1) ... [2023-08-27 05:00:36,589 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:00:36" (1/1) ... [2023-08-27 05:00:36,594 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:00:36" (1/1) ... [2023-08-27 05:00:36,595 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:00:36" (1/1) ... [2023-08-27 05:00:36,597 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:00:36" (1/1) ... [2023-08-27 05:00:36,600 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 05:00:36,600 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 05:00:36,600 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 05:00:36,601 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 05:00:36,601 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:00:36" (1/1) ... [2023-08-27 05:00:36,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 05:00:36,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 05:00:36,639 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) [2023-08-27 05:00:36,654 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 [2023-08-27 05:00:36,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 05:00:36,684 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-27 05:00:36,685 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-27 05:00:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 05:00:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 05:00:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 05:00:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 05:00:36,686 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-27 05:00:36,686 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-27 05:00:36,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 05:00:36,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 05:00:36,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 05:00:36,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 05:00:36,687 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 05:00:36,821 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 05:00:36,822 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 05:00:37,155 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 05:00:37,163 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 05:00:37,163 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-08-27 05:00:37,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:00:37 BoogieIcfgContainer [2023-08-27 05:00:37,165 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 05:00:37,167 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 05:00:37,167 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 05:00:37,174 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 05:00:37,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 05:00:36" (1/3) ... [2023-08-27 05:00:37,175 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57dc0c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:00:37, skipping insertion in model container [2023-08-27 05:00:37,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:00:36" (2/3) ... [2023-08-27 05:00:37,176 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57dc0c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:00:37, skipping insertion in model container [2023-08-27 05:00:37,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:00:37" (3/3) ... [2023-08-27 05:00:37,177 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_04-munge_racefree.i [2023-08-27 05:00:37,193 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 05:00:37,193 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-08-27 05:00:37,194 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 05:00:37,302 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-27 05:00:37,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 244 transitions, 510 flow [2023-08-27 05:00:37,514 INFO L124 PetriNetUnfolderBase]: 61/444 cut-off events. [2023-08-27 05:00:37,515 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-27 05:00:37,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 444 events. 61/444 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1957 event pairs, 0 based on Foata normal form. 0/344 useless extension candidates. Maximal degree in co-relation 236. Up to 8 conditions per place. [2023-08-27 05:00:37,527 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 244 transitions, 510 flow [2023-08-27 05:00:37,538 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 215 places, 244 transitions, 510 flow [2023-08-27 05:00:37,542 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:00:37,554 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 215 places, 244 transitions, 510 flow [2023-08-27 05:00:37,558 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 215 places, 244 transitions, 510 flow [2023-08-27 05:00:37,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 244 transitions, 510 flow [2023-08-27 05:00:37,619 INFO L124 PetriNetUnfolderBase]: 61/444 cut-off events. [2023-08-27 05:00:37,619 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-27 05:00:37,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 444 events. 61/444 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1957 event pairs, 0 based on Foata normal form. 0/344 useless extension candidates. Maximal degree in co-relation 236. Up to 8 conditions per place. [2023-08-27 05:00:37,639 INFO L119 LiptonReduction]: Number of co-enabled transitions 25608 [2023-08-27 05:00:41,622 INFO L134 LiptonReduction]: Checked pairs total: 47316 [2023-08-27 05:00:41,622 INFO L136 LiptonReduction]: Total number of compositions: 202 [2023-08-27 05:00:41,634 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:00:41,639 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;@31f5eb29, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:00:41,639 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-27 05:00:41,643 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:00:41,643 INFO L124 PetriNetUnfolderBase]: 1/25 cut-off events. [2023-08-27 05:00:41,643 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 05:00:41,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:00:41,644 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-27 05:00:41,644 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:00:41,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:00:41,648 INFO L85 PathProgramCache]: Analyzing trace with hash -889658639, now seen corresponding path program 1 times [2023-08-27 05:00:41,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:00:41,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039725867] [2023-08-27 05:00:41,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:00:41,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:00:41,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:00:41,746 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:00:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:00:41,784 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:00:41,786 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:00:41,786 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-27 05:00:41,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-27 05:00:41,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 05:00:41,789 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:00:41,791 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-27 05:00:41,791 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:00:41,791 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-27 05:00:41,840 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-27 05:00:41,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 327 places, 382 transitions, 812 flow [2023-08-27 05:00:42,101 INFO L124 PetriNetUnfolderBase]: 205/1338 cut-off events. [2023-08-27 05:00:42,103 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-27 05:00:42,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1435 conditions, 1338 events. 205/1338 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 8293 event pairs, 1 based on Foata normal form. 0/1030 useless extension candidates. Maximal degree in co-relation 803. Up to 32 conditions per place. [2023-08-27 05:00:42,140 INFO L82 GeneralOperation]: Start removeDead. Operand has 327 places, 382 transitions, 812 flow [2023-08-27 05:00:42,157 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 327 places, 382 transitions, 812 flow [2023-08-27 05:00:42,157 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:00:42,157 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 327 places, 382 transitions, 812 flow [2023-08-27 05:00:42,157 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 327 places, 382 transitions, 812 flow [2023-08-27 05:00:42,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 327 places, 382 transitions, 812 flow [2023-08-27 05:00:42,389 INFO L124 PetriNetUnfolderBase]: 205/1338 cut-off events. [2023-08-27 05:00:42,390 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-27 05:00:42,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1435 conditions, 1338 events. 205/1338 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 8293 event pairs, 1 based on Foata normal form. 0/1030 useless extension candidates. Maximal degree in co-relation 803. Up to 32 conditions per place. [2023-08-27 05:00:42,495 INFO L119 LiptonReduction]: Number of co-enabled transitions 88704 [2023-08-27 05:00:47,286 INFO L134 LiptonReduction]: Checked pairs total: 212677 [2023-08-27 05:00:47,287 INFO L136 LiptonReduction]: Total number of compositions: 300 [2023-08-27 05:00:47,289 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:00:47,290 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;@31f5eb29, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:00:47,290 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-27 05:00:47,302 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:00:47,302 INFO L124 PetriNetUnfolderBase]: 33/146 cut-off events. [2023-08-27 05:00:47,303 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-27 05:00:47,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:00:47,303 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-27 05:00:47,303 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:00:47,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:00:47,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1175441995, now seen corresponding path program 1 times [2023-08-27 05:00:47,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:00:47,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067741456] [2023-08-27 05:00:47,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:00:47,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:00:47,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:00:47,349 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:00:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:00:47,393 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:00:47,393 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:00:47,394 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-27 05:00:47,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-27 05:00:47,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 05:00:47,394 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:00:47,395 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-27 05:00:47,395 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:00:47,395 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-27 05:00:47,448 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-27 05:00:47,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 439 places, 520 transitions, 1118 flow [2023-08-27 05:00:48,520 INFO L124 PetriNetUnfolderBase]: 679/3888 cut-off events. [2023-08-27 05:00:48,521 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2023-08-27 05:00:48,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4339 conditions, 3888 events. 679/3888 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 30277 event pairs, 52 based on Foata normal form. 0/3040 useless extension candidates. Maximal degree in co-relation 2430. Up to 192 conditions per place. [2023-08-27 05:00:48,588 INFO L82 GeneralOperation]: Start removeDead. Operand has 439 places, 520 transitions, 1118 flow [2023-08-27 05:00:48,636 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 439 places, 520 transitions, 1118 flow [2023-08-27 05:00:48,636 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:00:48,636 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 439 places, 520 transitions, 1118 flow [2023-08-27 05:00:48,636 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 439 places, 520 transitions, 1118 flow [2023-08-27 05:00:48,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 439 places, 520 transitions, 1118 flow [2023-08-27 05:00:49,674 INFO L124 PetriNetUnfolderBase]: 679/3888 cut-off events. [2023-08-27 05:00:49,674 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2023-08-27 05:00:49,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4339 conditions, 3888 events. 679/3888 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 30277 event pairs, 52 based on Foata normal form. 0/3040 useless extension candidates. Maximal degree in co-relation 2430. Up to 192 conditions per place. [2023-08-27 05:00:50,093 INFO L119 LiptonReduction]: Number of co-enabled transitions 189288 [2023-08-27 05:00:55,358 INFO L134 LiptonReduction]: Checked pairs total: 427895 [2023-08-27 05:00:55,359 INFO L136 LiptonReduction]: Total number of compositions: 394 [2023-08-27 05:00:55,361 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:00:55,361 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;@31f5eb29, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:00:55,361 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-27 05:00:55,381 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:00:55,381 INFO L124 PetriNetUnfolderBase]: 74/305 cut-off events. [2023-08-27 05:00:55,381 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-08-27 05:00:55,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:00:55,381 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-27 05:00:55,382 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:00:55,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:00:55,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1923706404, now seen corresponding path program 1 times [2023-08-27 05:00:55,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:00:55,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171674047] [2023-08-27 05:00:55,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:00:55,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:00:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:00:55,409 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:00:55,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:00:55,437 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:00:55,437 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:00:55,437 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-27 05:00:55,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-27 05:00:55,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 05:00:55,438 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:00:55,438 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-27 05:00:55,438 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:00:55,438 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-27 05:00:55,502 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-08-27 05:00:55,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 551 places, 658 transitions, 1428 flow [2023-08-27 05:00:59,559 INFO L124 PetriNetUnfolderBase]: 2671/12846 cut-off events. [2023-08-27 05:00:59,560 INFO L125 PetriNetUnfolderBase]: For 2144/2144 co-relation queries the response was YES. [2023-08-27 05:00:59,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15011 conditions, 12846 events. 2671/12846 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 124319 event pairs, 626 based on Foata normal form. 0/10262 useless extension candidates. Maximal degree in co-relation 7888. Up to 1024 conditions per place. [2023-08-27 05:00:59,911 INFO L82 GeneralOperation]: Start removeDead. Operand has 551 places, 658 transitions, 1428 flow [2023-08-27 05:01:00,294 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 551 places, 658 transitions, 1428 flow [2023-08-27 05:01:00,295 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:01:00,295 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 551 places, 658 transitions, 1428 flow [2023-08-27 05:01:00,295 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 551 places, 658 transitions, 1428 flow [2023-08-27 05:01:00,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 551 places, 658 transitions, 1428 flow [2023-08-27 05:01:03,987 INFO L124 PetriNetUnfolderBase]: 2671/12846 cut-off events. [2023-08-27 05:01:03,987 INFO L125 PetriNetUnfolderBase]: For 2144/2144 co-relation queries the response was YES. [2023-08-27 05:01:04,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15011 conditions, 12846 events. 2671/12846 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 124319 event pairs, 626 based on Foata normal form. 0/10262 useless extension candidates. Maximal degree in co-relation 7888. Up to 1024 conditions per place. [2023-08-27 05:01:05,307 INFO L119 LiptonReduction]: Number of co-enabled transitions 327360 [2023-08-27 05:01:11,797 INFO L134 LiptonReduction]: Checked pairs total: 790822 [2023-08-27 05:01:11,797 INFO L136 LiptonReduction]: Total number of compositions: 487 [2023-08-27 05:01:11,799 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:01:11,799 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;@31f5eb29, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:01:11,800 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-27 05:01:11,833 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:01:11,834 INFO L124 PetriNetUnfolderBase]: 138/564 cut-off events. [2023-08-27 05:01:11,834 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-08-27 05:01:11,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:01:11,834 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-27 05:01:11,834 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:01:11,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:01:11,835 INFO L85 PathProgramCache]: Analyzing trace with hash -264777534, now seen corresponding path program 1 times [2023-08-27 05:01:11,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:01:11,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607382938] [2023-08-27 05:01:11,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:01:11,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:01:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:01:11,868 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:01:11,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:01:11,907 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:01:11,908 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:01:11,908 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-27 05:01:11,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-27 05:01:11,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 05:01:11,908 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:01:11,909 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-27 05:01:11,909 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:01:11,909 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-27 05:01:11,970 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2023-08-27 05:01:11,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 663 places, 796 transitions, 1742 flow [2023-08-27 05:01:32,361 INFO L124 PetriNetUnfolderBase]: 11797/48084 cut-off events. [2023-08-27 05:01:32,361 INFO L125 PetriNetUnfolderBase]: For 10450/10450 co-relation queries the response was YES. [2023-08-27 05:01:36,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58510 conditions, 48084 events. 11797/48084 cut-off events. For 10450/10450 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 572081 event pairs, 3676 based on Foata normal form. 0/39112 useless extension candidates. Maximal degree in co-relation 29276. Up to 5120 conditions per place. [2023-08-27 05:01:36,090 INFO L82 GeneralOperation]: Start removeDead. Operand has 663 places, 796 transitions, 1742 flow [2023-08-27 05:01:37,511 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 663 places, 796 transitions, 1742 flow [2023-08-27 05:01:37,512 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:01:37,512 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 663 places, 796 transitions, 1742 flow [2023-08-27 05:01:37,512 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 663 places, 796 transitions, 1742 flow [2023-08-27 05:01:37,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 663 places, 796 transitions, 1742 flow [2023-08-27 05:01:57,286 INFO L124 PetriNetUnfolderBase]: 11797/48084 cut-off events. [2023-08-27 05:01:57,287 INFO L125 PetriNetUnfolderBase]: For 10450/10450 co-relation queries the response was YES. [2023-08-27 05:02:01,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58510 conditions, 48084 events. 11797/48084 cut-off events. For 10450/10450 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 572081 event pairs, 3676 based on Foata normal form. 0/39112 useless extension candidates. Maximal degree in co-relation 29276. Up to 5120 conditions per place. [2023-08-27 05:02:08,831 INFO L119 LiptonReduction]: Number of co-enabled transitions 502920 [2023-08-27 05:02:16,110 INFO L134 LiptonReduction]: Checked pairs total: 1190775 [2023-08-27 05:02:16,110 INFO L136 LiptonReduction]: Total number of compositions: 595 [2023-08-27 05:02:16,115 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:02:16,121 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;@31f5eb29, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:02:16,121 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-27 05:02:16,214 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:02:16,215 INFO L124 PetriNetUnfolderBase]: 228/931 cut-off events. [2023-08-27 05:02:16,215 INFO L125 PetriNetUnfolderBase]: For 165/165 co-relation queries the response was YES. [2023-08-27 05:02:16,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:02:16,215 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:02:16,215 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:02:16,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:02:16,219 INFO L85 PathProgramCache]: Analyzing trace with hash -252641162, now seen corresponding path program 1 times [2023-08-27 05:02:16,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:02:16,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486902338] [2023-08-27 05:02:16,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:02:16,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:02:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:02:16,277 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:02:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:02:16,303 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:02:16,303 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:02:16,303 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-27 05:02:16,303 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-27 05:02:16,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 05:02:16,304 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:02:16,304 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-27 05:02:16,304 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:02:16,304 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-27 05:02:16,375 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2023-08-27 05:02:16,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 775 places, 934 transitions, 2060 flow [2023-08-27 05:04:04,154 INFO L124 PetriNetUnfolderBase]: 53977/192546 cut-off events. [2023-08-27 05:04:04,155 INFO L125 PetriNetUnfolderBase]: For 49552/49552 co-relation queries the response was YES. [2023-08-27 05:04:24,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241975 conditions, 192546 events. 53977/192546 cut-off events. For 49552/49552 co-relation queries the response was YES. Maximal size of possible extension queue 2129. Compared 2733008 event pairs, 24930 based on Foata normal form. 0/158710 useless extension candidates. Maximal degree in co-relation 118437. Up to 24576 conditions per place. [2023-08-27 05:04:24,247 INFO L82 GeneralOperation]: Start removeDead. Operand has 775 places, 934 transitions, 2060 flow [2023-08-27 05:04:35,967 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 775 places, 934 transitions, 2060 flow [2023-08-27 05:04:35,967 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:04:35,967 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 775 places, 934 transitions, 2060 flow [2023-08-27 05:04:35,967 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 775 places, 934 transitions, 2060 flow [2023-08-27 05:04:35,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 775 places, 934 transitions, 2060 flow