/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.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 17:58:32,150 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 17:58:32,232 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 [2023-08-25 17:58:32,239 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 17:58:32,239 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 17:58:32,257 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 17:58:32,258 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 17:58:32,258 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 17:58:32,258 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 17:58:32,262 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 17:58:32,262 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 17:58:32,262 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 17:58:32,263 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 17:58:32,264 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 17:58:32,264 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 17:58:32,264 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 17:58:32,264 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 17:58:32,265 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 17:58:32,265 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 17:58:32,265 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 17:58:32,265 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 17:58:32,266 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 17:58:32,266 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 17:58:32,267 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 17:58:32,267 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 17:58:32,267 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 17:58:32,267 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 17:58:32,267 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 17:58:32,268 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 17:58:32,268 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 17:58:32,269 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 17:58:32,269 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 17:58:32,269 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 17:58:32,269 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 17:58:32,269 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 17:58:32,269 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 17:58:32,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 17:58:32,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 17:58:32,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 17:58:32,606 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 17:58:32,607 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 17:58:32,608 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i [2023-08-25 17:58:33,847 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 17:58:34,134 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 17:58:34,135 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i [2023-08-25 17:58:34,154 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b5fd4afb/4c9d8f7ac3d340b4945ad82d1bba1bc5/FLAG8253b4513 [2023-08-25 17:58:34,165 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b5fd4afb/4c9d8f7ac3d340b4945ad82d1bba1bc5 [2023-08-25 17:58:34,167 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 17:58:34,168 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 17:58:34,169 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 17:58:34,169 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 17:58:34,171 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 17:58:34,172 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 05:58:34" (1/1) ... [2023-08-25 17:58:34,173 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5113968b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:58:34, skipping insertion in model container [2023-08-25 17:58:34,173 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 05:58:34" (1/1) ... [2023-08-25 17:58:34,213 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 17:58:34,563 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 17:58:34,580 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 17:58:34,608 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 17:58:34,609 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 17:58:34,642 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 17:58:34,692 INFO L206 MainTranslator]: Completed translation [2023-08-25 17:58:34,694 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:58:34 WrapperNode [2023-08-25 17:58:34,694 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 17:58:34,695 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 17:58:34,696 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 17:58:34,696 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 17:58:34,701 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:58:34" (1/1) ... [2023-08-25 17:58:34,729 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:58:34" (1/1) ... [2023-08-25 17:58:34,755 INFO L138 Inliner]: procedures = 172, calls = 44, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 249 [2023-08-25 17:58:34,755 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 17:58:34,756 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 17:58:34,756 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 17:58:34,756 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 17:58:34,763 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:58:34" (1/1) ... [2023-08-25 17:58:34,764 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:58:34" (1/1) ... [2023-08-25 17:58:34,769 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:58:34" (1/1) ... [2023-08-25 17:58:34,769 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:58:34" (1/1) ... [2023-08-25 17:58:34,788 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:58:34" (1/1) ... [2023-08-25 17:58:34,792 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:58:34" (1/1) ... [2023-08-25 17:58:34,794 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:58:34" (1/1) ... [2023-08-25 17:58:34,796 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:58:34" (1/1) ... [2023-08-25 17:58:34,802 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 17:58:34,803 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 17:58:34,803 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 17:58:34,803 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 17:58:34,804 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:58:34" (1/1) ... [2023-08-25 17:58:34,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 17:58:34,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:58:34,833 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) [2023-08-25 17:58:34,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 17:58:34,869 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-25 17:58:34,869 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-25 17:58:34,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 17:58:34,870 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 17:58:34,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 17:58:34,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 17:58:34,870 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-25 17:58:34,870 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-25 17:58:34,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 17:58:34,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 17:58:34,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 17:58:34,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 17:58:34,872 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 17:58:34,864 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 [2023-08-25 17:58:35,000 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 17:58:35,002 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 17:58:35,258 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 17:58:35,274 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 17:58:35,274 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-08-25 17:58:35,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 05:58:35 BoogieIcfgContainer [2023-08-25 17:58:35,276 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 17:58:35,278 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 17:58:35,278 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 17:58:35,281 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 17:58:35,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 05:58:34" (1/3) ... [2023-08-25 17:58:35,281 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a20cb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 05:58:35, skipping insertion in model container [2023-08-25 17:58:35,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:58:34" (2/3) ... [2023-08-25 17:58:35,282 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a20cb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 05:58:35, skipping insertion in model container [2023-08-25 17:58:35,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 05:58:35" (3/3) ... [2023-08-25 17:58:35,283 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_03-munge_racing.i [2023-08-25 17:58:35,295 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 17:58:35,295 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-25 17:58:35,295 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 17:58:35,387 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-25 17:58:35,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 231 places, 260 transitions, 542 flow [2023-08-25 17:58:35,593 INFO L124 PetriNetUnfolderBase]: 61/487 cut-off events. [2023-08-25 17:58:35,594 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-25 17:58:35,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 507 conditions, 487 events. 61/487 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2423 event pairs, 0 based on Foata normal form. 0/394 useless extension candidates. Maximal degree in co-relation 266. Up to 8 conditions per place. [2023-08-25 17:58:35,612 INFO L82 GeneralOperation]: Start removeDead. Operand has 231 places, 260 transitions, 542 flow [2023-08-25 17:58:35,624 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 231 places, 260 transitions, 542 flow [2023-08-25 17:58:35,628 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 17:58:35,639 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 231 places, 260 transitions, 542 flow [2023-08-25 17:58:35,642 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 231 places, 260 transitions, 542 flow [2023-08-25 17:58:35,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 231 places, 260 transitions, 542 flow [2023-08-25 17:58:35,729 INFO L124 PetriNetUnfolderBase]: 61/487 cut-off events. [2023-08-25 17:58:35,729 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-25 17:58:35,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 507 conditions, 487 events. 61/487 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2423 event pairs, 0 based on Foata normal form. 0/394 useless extension candidates. Maximal degree in co-relation 266. Up to 8 conditions per place. [2023-08-25 17:58:35,757 INFO L119 LiptonReduction]: Number of co-enabled transitions 30954 [2023-08-25 17:58:40,087 INFO L134 LiptonReduction]: Checked pairs total: 85545 [2023-08-25 17:58:40,087 INFO L136 LiptonReduction]: Total number of compositions: 180 [2023-08-25 17:58:40,099 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 17:58:40,104 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;@6313515d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 17:58:40,105 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-25 17:58:40,108 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 17:58:40,109 INFO L124 PetriNetUnfolderBase]: 3/27 cut-off events. [2023-08-25 17:58:40,109 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 17:58:40,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:58:40,109 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-25 17:58:40,110 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-25 17:58:40,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:58:40,114 INFO L85 PathProgramCache]: Analyzing trace with hash 39257843, now seen corresponding path program 1 times [2023-08-25 17:58:40,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:58:40,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555179839] [2023-08-25 17:58:40,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:58:40,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:58:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:58:40,225 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 17:58:40,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:58:40,268 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 17:58:40,269 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 17:58:40,270 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-25 17:58:40,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-25 17:58:40,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 17:58:40,273 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 17:58:40,275 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-25 17:58:40,276 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 17:58:40,276 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-25 17:58:40,331 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-25 17:58:40,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 365 places, 420 transitions, 888 flow [2023-08-25 17:58:40,644 INFO L124 PetriNetUnfolderBase]: 205/1464 cut-off events. [2023-08-25 17:58:40,644 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-25 17:58:40,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1561 conditions, 1464 events. 205/1464 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 9694 event pairs, 1 based on Foata normal form. 0/1192 useless extension candidates. Maximal degree in co-relation 876. Up to 32 conditions per place. [2023-08-25 17:58:40,677 INFO L82 GeneralOperation]: Start removeDead. Operand has 365 places, 420 transitions, 888 flow [2023-08-25 17:58:40,694 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 365 places, 420 transitions, 888 flow [2023-08-25 17:58:40,695 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 17:58:40,695 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 365 places, 420 transitions, 888 flow [2023-08-25 17:58:40,695 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 365 places, 420 transitions, 888 flow [2023-08-25 17:58:40,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 365 places, 420 transitions, 888 flow [2023-08-25 17:58:40,943 INFO L124 PetriNetUnfolderBase]: 205/1464 cut-off events. [2023-08-25 17:58:40,943 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-25 17:58:40,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1561 conditions, 1464 events. 205/1464 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 9694 event pairs, 1 based on Foata normal form. 0/1192 useless extension candidates. Maximal degree in co-relation 876. Up to 32 conditions per place. [2023-08-25 17:58:41,070 INFO L119 LiptonReduction]: Number of co-enabled transitions 112420 [2023-08-25 17:58:45,868 INFO L134 LiptonReduction]: Checked pairs total: 339251 [2023-08-25 17:58:45,868 INFO L136 LiptonReduction]: Total number of compositions: 271 [2023-08-25 17:58:45,870 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 17:58:45,872 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;@6313515d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 17:58:45,872 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-25 17:58:45,883 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 17:58:45,884 INFO L124 PetriNetUnfolderBase]: 27/150 cut-off events. [2023-08-25 17:58:45,884 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-25 17:58:45,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:58:45,884 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-25 17:58:45,884 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-25 17:58:45,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:58:45,885 INFO L85 PathProgramCache]: Analyzing trace with hash -383738671, now seen corresponding path program 1 times [2023-08-25 17:58:45,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:58:45,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750958789] [2023-08-25 17:58:45,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:58:45,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:58:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:58:45,912 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 17:58:45,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:58:45,935 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 17:58:45,935 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 17:58:45,936 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-25 17:58:45,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-25 17:58:45,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 17:58:45,936 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 17:58:45,937 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-25 17:58:45,937 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 17:58:45,937 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-25 17:58:46,003 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-25 17:58:46,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 499 places, 580 transitions, 1238 flow [2023-08-25 17:58:47,463 INFO L124 PetriNetUnfolderBase]: 679/4255 cut-off events. [2023-08-25 17:58:47,464 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2023-08-25 17:58:47,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4706 conditions, 4255 events. 679/4255 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 34489 event pairs, 52 based on Foata normal form. 0/3546 useless extension candidates. Maximal degree in co-relation 2641. Up to 192 conditions per place. [2023-08-25 17:58:47,551 INFO L82 GeneralOperation]: Start removeDead. Operand has 499 places, 580 transitions, 1238 flow [2023-08-25 17:58:47,598 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 499 places, 580 transitions, 1238 flow [2023-08-25 17:58:47,599 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 17:58:47,599 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 499 places, 580 transitions, 1238 flow [2023-08-25 17:58:47,599 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 499 places, 580 transitions, 1238 flow [2023-08-25 17:58:47,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 499 places, 580 transitions, 1238 flow [2023-08-25 17:58:48,714 INFO L124 PetriNetUnfolderBase]: 679/4255 cut-off events. [2023-08-25 17:58:48,715 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2023-08-25 17:58:48,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4706 conditions, 4255 events. 679/4255 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 34489 event pairs, 52 based on Foata normal form. 0/3546 useless extension candidates. Maximal degree in co-relation 2641. Up to 192 conditions per place. [2023-08-25 17:58:49,202 INFO L119 LiptonReduction]: Number of co-enabled transitions 244398 [2023-08-25 17:58:54,514 INFO L134 LiptonReduction]: Checked pairs total: 918647 [2023-08-25 17:58:54,514 INFO L136 LiptonReduction]: Total number of compositions: 354 [2023-08-25 17:58:54,516 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 17:58:54,518 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;@6313515d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 17:58:54,518 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-25 17:58:54,535 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 17:58:54,535 INFO L124 PetriNetUnfolderBase]: 72/342 cut-off events. [2023-08-25 17:58:54,535 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-08-25 17:58:54,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:58:54,535 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-25 17:58:54,536 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-25 17:58:54,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:58:54,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1584286659, now seen corresponding path program 1 times [2023-08-25 17:58:54,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:58:54,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227796456] [2023-08-25 17:58:54,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:58:54,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:58:54,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:58:54,580 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 17:58:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:58:54,628 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 17:58:54,629 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 17:58:54,629 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-25 17:58:54,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-25 17:58:54,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 17:58:54,629 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 17:58:54,630 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-25 17:58:54,630 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 17:58:54,630 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-25 17:58:54,688 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-08-25 17:58:54,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 633 places, 740 transitions, 1592 flow [2023-08-25 17:58:59,972 INFO L124 PetriNetUnfolderBase]: 2671/14044 cut-off events. [2023-08-25 17:58:59,972 INFO L125 PetriNetUnfolderBase]: For 2144/2144 co-relation queries the response was YES. [2023-08-25 17:59:00,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16209 conditions, 14044 events. 2671/14044 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 140300 event pairs, 626 based on Foata normal form. 0/11992 useless extension candidates. Maximal degree in co-relation 8539. Up to 1024 conditions per place. [2023-08-25 17:59:00,404 INFO L82 GeneralOperation]: Start removeDead. Operand has 633 places, 740 transitions, 1592 flow [2023-08-25 17:59:00,655 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 633 places, 740 transitions, 1592 flow [2023-08-25 17:59:00,655 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 17:59:00,655 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 633 places, 740 transitions, 1592 flow [2023-08-25 17:59:00,656 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 633 places, 740 transitions, 1592 flow [2023-08-25 17:59:00,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 633 places, 740 transitions, 1592 flow [2023-08-25 17:59:05,158 INFO L124 PetriNetUnfolderBase]: 2671/14044 cut-off events. [2023-08-25 17:59:05,158 INFO L125 PetriNetUnfolderBase]: For 2144/2144 co-relation queries the response was YES. [2023-08-25 17:59:05,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16209 conditions, 14044 events. 2671/14044 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 140300 event pairs, 626 based on Foata normal form. 0/11992 useless extension candidates. Maximal degree in co-relation 8539. Up to 1024 conditions per place. [2023-08-25 17:59:06,668 INFO L119 LiptonReduction]: Number of co-enabled transitions 426888 [2023-08-25 17:59:12,650 INFO L134 LiptonReduction]: Checked pairs total: 1452491 [2023-08-25 17:59:12,650 INFO L136 LiptonReduction]: Total number of compositions: 449 [2023-08-25 17:59:12,652 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 17:59:12,653 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;@6313515d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 17:59:12,654 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-25 17:59:12,699 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 17:59:12,699 INFO L124 PetriNetUnfolderBase]: 125/599 cut-off events. [2023-08-25 17:59:12,699 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2023-08-25 17:59:12,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:59:12,700 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-25 17:59:12,700 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-25 17:59:12,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:59:12,700 INFO L85 PathProgramCache]: Analyzing trace with hash 235038601, now seen corresponding path program 1 times [2023-08-25 17:59:12,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:59:12,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31204405] [2023-08-25 17:59:12,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:59:12,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:59:12,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:59:12,727 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 17:59:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:59:12,751 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 17:59:12,751 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 17:59:12,751 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-25 17:59:12,751 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-25 17:59:12,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 17:59:12,752 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 17:59:12,752 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-25 17:59:12,752 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 17:59:12,753 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-25 17:59:12,810 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2023-08-25 17:59:12,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 767 places, 900 transitions, 1950 flow [2023-08-25 17:59:35,320 INFO L124 PetriNetUnfolderBase]: 11797/52431 cut-off events. [2023-08-25 17:59:35,320 INFO L125 PetriNetUnfolderBase]: For 10450/10450 co-relation queries the response was YES. [2023-08-25 17:59:39,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62857 conditions, 52431 events. 11797/52431 cut-off events. For 10450/10450 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 646565 event pairs, 4296 based on Foata normal form. 0/45538 useless extension candidates. Maximal degree in co-relation 31533. Up to 5120 conditions per place. [2023-08-25 17:59:39,337 INFO L82 GeneralOperation]: Start removeDead. Operand has 767 places, 900 transitions, 1950 flow [2023-08-25 17:59:40,722 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 767 places, 900 transitions, 1950 flow [2023-08-25 17:59:40,722 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 17:59:40,722 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 767 places, 900 transitions, 1950 flow [2023-08-25 17:59:40,722 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 767 places, 900 transitions, 1950 flow [2023-08-25 17:59:40,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 767 places, 900 transitions, 1950 flow [2023-08-25 18:00:02,646 INFO L124 PetriNetUnfolderBase]: 11797/52431 cut-off events. [2023-08-25 18:00:02,647 INFO L125 PetriNetUnfolderBase]: For 10450/10450 co-relation queries the response was YES. [2023-08-25 18:00:06,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62857 conditions, 52431 events. 11797/52431 cut-off events. For 10450/10450 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 646565 event pairs, 4296 based on Foata normal form. 0/45538 useless extension candidates. Maximal degree in co-relation 31533. Up to 5120 conditions per place. [2023-08-25 18:00:13,577 INFO L119 LiptonReduction]: Number of co-enabled transitions 659890 [2023-08-25 18:00:20,320 INFO L134 LiptonReduction]: Checked pairs total: 2270666 [2023-08-25 18:00:20,320 INFO L136 LiptonReduction]: Total number of compositions: 543 [2023-08-25 18:00:20,322 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 18:00:20,323 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;@6313515d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 18:00:20,323 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-25 18:00:20,401 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 18:00:20,401 INFO L124 PetriNetUnfolderBase]: 231/1030 cut-off events. [2023-08-25 18:00:20,401 INFO L125 PetriNetUnfolderBase]: For 199/199 co-relation queries the response was YES. [2023-08-25 18:00:20,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:00:20,401 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 18:00:20,401 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-25 18:00:20,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:00:20,402 INFO L85 PathProgramCache]: Analyzing trace with hash -311237380, now seen corresponding path program 1 times [2023-08-25 18:00:20,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:00:20,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647067406] [2023-08-25 18:00:20,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:00:20,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:00:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:00:20,427 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 18:00:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:00:20,453 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 18:00:20,454 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 18:00:20,454 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-25 18:00:20,454 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-25 18:00:20,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 18:00:20,454 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 18:00:20,455 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-25 18:00:20,455 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 18:00:20,455 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-25 18:00:20,529 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2023-08-25 18:00:20,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 901 places, 1060 transitions, 2312 flow