/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_01-simple_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 17:58:29,601 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 17:58:29,684 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 17:58:29,689 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 17:58:29,689 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 17:58:29,719 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 17:58:29,719 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 17:58:29,720 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 17:58:29,720 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 17:58:29,724 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 17:58:29,724 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 17:58:29,724 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 17:58:29,725 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 17:58:29,726 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 17:58:29,726 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 17:58:29,726 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 17:58:29,727 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 17:58:29,727 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 17:58:29,727 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 17:58:29,727 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 17:58:29,727 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 17:58:29,728 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 17:58:29,728 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 17:58:29,729 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 17:58:29,729 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 17:58:29,729 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 17:58:29,730 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 17:58:29,730 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 17:58:29,730 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 17:58:29,730 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 17:58:29,731 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 17:58:29,731 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 17:58:29,731 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 17:58:29,732 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 17:58:29,732 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 17:58:29,732 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 17:58:30,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 17:58:30,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 17:58:30,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 17:58:30,029 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 17:58:30,029 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 17:58:30,030 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i [2023-08-25 17:58:31,235 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 17:58:31,553 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 17:58:31,554 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i [2023-08-25 17:58:31,572 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af4166c3b/8ed6905112e04a4882dc176268469238/FLAG5943d77f7 [2023-08-25 17:58:31,587 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af4166c3b/8ed6905112e04a4882dc176268469238 [2023-08-25 17:58:31,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 17:58:31,592 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 17:58:31,595 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 17:58:31,595 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 17:58:31,597 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 17:58:31,599 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 05:58:31" (1/1) ... [2023-08-25 17:58:31,599 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@137c13a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:58:31, skipping insertion in model container [2023-08-25 17:58:31,600 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 05:58:31" (1/1) ... [2023-08-25 17:58:31,646 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 17:58:31,978 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 17:58:31,996 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 17:58:32,024 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 17:58:32,030 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 17:58:32,053 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 17:58:32,100 INFO L206 MainTranslator]: Completed translation [2023-08-25 17:58:32,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:58:32 WrapperNode [2023-08-25 17:58:32,101 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 17:58:32,102 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 17:58:32,102 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 17:58:32,102 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 17:58:32,108 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:58:32" (1/1) ... [2023-08-25 17:58:32,134 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:58:32" (1/1) ... [2023-08-25 17:58:32,164 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 91 [2023-08-25 17:58:32,165 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 17:58:32,165 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 17:58:32,165 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 17:58:32,166 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 17:58:32,173 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:58:32" (1/1) ... [2023-08-25 17:58:32,173 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:58:32" (1/1) ... [2023-08-25 17:58:32,190 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:58:32" (1/1) ... [2023-08-25 17:58:32,191 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:58:32" (1/1) ... [2023-08-25 17:58:32,196 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:58:32" (1/1) ... [2023-08-25 17:58:32,198 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:58:32" (1/1) ... [2023-08-25 17:58:32,200 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:58:32" (1/1) ... [2023-08-25 17:58:32,201 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:58:32" (1/1) ... [2023-08-25 17:58:32,203 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 17:58:32,204 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 17:58:32,204 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 17:58:32,204 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 17:58:32,219 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:58:32" (1/1) ... [2023-08-25 17:58:32,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 17:58:32,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:58:32,244 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 17:58:32,248 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 17:58:32,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 17:58:32,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 17:58:32,277 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 17:58:32,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 17:58:32,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 17:58:32,278 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-25 17:58:32,278 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-25 17:58:32,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 17:58:32,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 17:58:32,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 17:58:32,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 17:58:32,280 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 17:58:32,429 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 17:58:32,433 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 17:58:32,721 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 17:58:32,727 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 17:58:32,727 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-25 17:58:32,729 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 05:58:32 BoogieIcfgContainer [2023-08-25 17:58:32,729 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 17:58:32,731 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 17:58:32,731 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 17:58:32,736 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 17:58:32,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 05:58:31" (1/3) ... [2023-08-25 17:58:32,737 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b6633b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 05:58:32, skipping insertion in model container [2023-08-25 17:58:32,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:58:32" (2/3) ... [2023-08-25 17:58:32,738 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b6633b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 05:58:32, skipping insertion in model container [2023-08-25 17:58:32,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 05:58:32" (3/3) ... [2023-08-25 17:58:32,739 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_01-simple_racing.i [2023-08-25 17:58:32,754 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 17:58:32,755 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-25 17:58:32,755 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 17:58:32,815 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-25 17:58:32,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 137 transitions, 282 flow [2023-08-25 17:58:32,901 INFO L124 PetriNetUnfolderBase]: 19/185 cut-off events. [2023-08-25 17:58:32,901 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 17:58:32,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 185 events. 19/185 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 541 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 97. Up to 4 conditions per place. [2023-08-25 17:58:32,908 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 137 transitions, 282 flow [2023-08-25 17:58:32,944 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 132 transitions, 269 flow [2023-08-25 17:58:32,957 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 17:58:32,966 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 132 transitions, 269 flow [2023-08-25 17:58:32,977 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 132 transitions, 269 flow [2023-08-25 17:58:32,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 132 transitions, 269 flow [2023-08-25 17:58:33,025 INFO L124 PetriNetUnfolderBase]: 18/180 cut-off events. [2023-08-25 17:58:33,026 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 17:58:33,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 180 events. 18/180 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 537 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 97. Up to 4 conditions per place. [2023-08-25 17:58:33,030 INFO L119 LiptonReduction]: Number of co-enabled transitions 4752 [2023-08-25 17:58:36,049 INFO L134 LiptonReduction]: Checked pairs total: 12958 [2023-08-25 17:58:36,050 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-08-25 17:58:36,061 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 17:58:36,067 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;@76e41039, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 17:58:36,067 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-25 17:58:36,071 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 17:58:36,071 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2023-08-25 17:58:36,071 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 17:58:36,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:58:36,072 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-25 17:58:36,072 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-25 17:58:36,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:58:36,077 INFO L85 PathProgramCache]: Analyzing trace with hash 2076683759, now seen corresponding path program 1 times [2023-08-25 17:58:36,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:58:36,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409871597] [2023-08-25 17:58:36,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:58:36,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:58:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:58:36,183 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 17:58:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:58:36,224 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 17:58:36,226 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 17:58:36,227 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-25 17:58:36,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 17:58:36,229 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 17:58:36,233 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-25 17:58:36,234 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 17:58:36,234 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-25 17:58:36,257 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 17:58:36,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 183 transitions, 384 flow [2023-08-25 17:58:36,303 INFO L124 PetriNetUnfolderBase]: 34/310 cut-off events. [2023-08-25 17:58:36,303 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-25 17:58:36,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 310 events. 34/310 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1086 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 187. Up to 8 conditions per place. [2023-08-25 17:58:36,307 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 183 transitions, 384 flow [2023-08-25 17:58:36,309 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 168 places, 183 transitions, 384 flow [2023-08-25 17:58:36,309 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 17:58:36,309 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 168 places, 183 transitions, 384 flow [2023-08-25 17:58:36,309 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 168 places, 183 transitions, 384 flow [2023-08-25 17:58:36,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 183 transitions, 384 flow [2023-08-25 17:58:36,342 INFO L124 PetriNetUnfolderBase]: 34/310 cut-off events. [2023-08-25 17:58:36,343 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-25 17:58:36,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 310 events. 34/310 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1086 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 187. Up to 8 conditions per place. [2023-08-25 17:58:36,354 INFO L119 LiptonReduction]: Number of co-enabled transitions 14344 [2023-08-25 17:58:39,321 INFO L134 LiptonReduction]: Checked pairs total: 47318 [2023-08-25 17:58:39,322 INFO L136 LiptonReduction]: Total number of compositions: 126 [2023-08-25 17:58:39,324 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 17:58:39,325 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;@76e41039, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 17:58:39,325 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-25 17:58:39,333 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 17:58:39,333 INFO L124 PetriNetUnfolderBase]: 10/68 cut-off events. [2023-08-25 17:58:39,333 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-25 17:58:39,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:58:39,333 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-25 17:58:39,334 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-25 17:58:39,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:58:39,334 INFO L85 PathProgramCache]: Analyzing trace with hash 989092859, now seen corresponding path program 1 times [2023-08-25 17:58:39,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:58:39,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457199105] [2023-08-25 17:58:39,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:58:39,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:58:39,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:58:39,396 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 17:58:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:58:39,425 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 17:58:39,425 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 17:58:39,426 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-25 17:58:39,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 17:58:39,426 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 17:58:39,427 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-25 17:58:39,427 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 17:58:39,427 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-25 17:58:39,452 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-25 17:58:39,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 229 transitions, 488 flow [2023-08-25 17:58:39,512 INFO L124 PetriNetUnfolderBase]: 54/480 cut-off events. [2023-08-25 17:58:39,512 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-25 17:58:39,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 508 conditions, 480 events. 54/480 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1864 event pairs, 1 based on Foata normal form. 0/394 useless extension candidates. Maximal degree in co-relation 318. Up to 16 conditions per place. [2023-08-25 17:58:39,517 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 229 transitions, 488 flow [2023-08-25 17:58:39,520 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 229 transitions, 488 flow [2023-08-25 17:58:39,520 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 17:58:39,521 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 229 transitions, 488 flow [2023-08-25 17:58:39,521 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 229 transitions, 488 flow [2023-08-25 17:58:39,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 229 transitions, 488 flow [2023-08-25 17:58:39,574 INFO L124 PetriNetUnfolderBase]: 54/480 cut-off events. [2023-08-25 17:58:39,574 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-25 17:58:39,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 508 conditions, 480 events. 54/480 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1864 event pairs, 1 based on Foata normal form. 0/394 useless extension candidates. Maximal degree in co-relation 318. Up to 16 conditions per place. [2023-08-25 17:58:39,597 INFO L119 LiptonReduction]: Number of co-enabled transitions 27720 [2023-08-25 17:58:42,804 INFO L134 LiptonReduction]: Checked pairs total: 115571 [2023-08-25 17:58:42,804 INFO L136 LiptonReduction]: Total number of compositions: 141 [2023-08-25 17:58:42,806 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 17:58:42,807 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;@76e41039, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 17:58:42,807 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-25 17:58:42,816 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 17:58:42,816 INFO L124 PetriNetUnfolderBase]: 23/129 cut-off events. [2023-08-25 17:58:42,816 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-25 17:58:42,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:58:42,817 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-25 17:58:42,817 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-25 17:58:42,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:58:42,817 INFO L85 PathProgramCache]: Analyzing trace with hash 291868643, now seen corresponding path program 1 times [2023-08-25 17:58:42,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:58:42,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962357039] [2023-08-25 17:58:42,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:58:42,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:58:42,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:58:42,864 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 17:58:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:58:42,899 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 17:58:42,900 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 17:58:42,900 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-25 17:58:42,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 17:58:42,900 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 17:58:42,901 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-25 17:58:42,901 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 17:58:42,901 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-25 17:58:42,927 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-25 17:58:42,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 275 transitions, 594 flow [2023-08-25 17:58:43,025 INFO L124 PetriNetUnfolderBase]: 86/742 cut-off events. [2023-08-25 17:58:43,026 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-25 17:58:43,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 797 conditions, 742 events. 86/742 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3253 event pairs, 6 based on Foata normal form. 0/614 useless extension candidates. Maximal degree in co-relation 500. Up to 32 conditions per place. [2023-08-25 17:58:43,037 INFO L82 GeneralOperation]: Start removeDead. Operand has 250 places, 275 transitions, 594 flow [2023-08-25 17:58:43,047 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 250 places, 275 transitions, 594 flow [2023-08-25 17:58:43,047 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 17:58:43,047 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 250 places, 275 transitions, 594 flow [2023-08-25 17:58:43,048 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 250 places, 275 transitions, 594 flow [2023-08-25 17:58:43,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 275 transitions, 594 flow [2023-08-25 17:58:43,172 INFO L124 PetriNetUnfolderBase]: 86/742 cut-off events. [2023-08-25 17:58:43,172 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-25 17:58:43,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 797 conditions, 742 events. 86/742 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3253 event pairs, 6 based on Foata normal form. 0/614 useless extension candidates. Maximal degree in co-relation 500. Up to 32 conditions per place. [2023-08-25 17:58:43,207 INFO L119 LiptonReduction]: Number of co-enabled transitions 45232 [2023-08-25 17:58:46,184 INFO L134 LiptonReduction]: Checked pairs total: 173220 [2023-08-25 17:58:46,184 INFO L136 LiptonReduction]: Total number of compositions: 156 [2023-08-25 17:58:46,187 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 17:58:46,189 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;@76e41039, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 17:58:46,189 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-25 17:58:46,203 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 17:58:46,203 INFO L124 PetriNetUnfolderBase]: 31/182 cut-off events. [2023-08-25 17:58:46,203 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-08-25 17:58:46,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:58:46,203 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-25 17:58:46,204 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-25 17:58:46,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:58:46,204 INFO L85 PathProgramCache]: Analyzing trace with hash -255205758, now seen corresponding path program 1 times [2023-08-25 17:58:46,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:58:46,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230852601] [2023-08-25 17:58:46,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:58:46,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:58:46,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:58:46,258 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 17:58:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:58:46,289 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 17:58:46,289 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 17:58:46,289 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-25 17:58:46,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 17:58:46,290 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 17:58:46,290 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-25 17:58:46,290 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 17:58:46,290 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-25 17:58:46,330 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-25 17:58:46,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 291 places, 321 transitions, 702 flow [2023-08-25 17:58:46,515 INFO L124 PetriNetUnfolderBase]: 146/1192 cut-off events. [2023-08-25 17:58:46,516 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-25 17:58:46,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1303 conditions, 1192 events. 146/1192 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 6037 event pairs, 23 based on Foata normal form. 0/998 useless extension candidates. Maximal degree in co-relation 787. Up to 80 conditions per place. [2023-08-25 17:58:46,543 INFO L82 GeneralOperation]: Start removeDead. Operand has 291 places, 321 transitions, 702 flow [2023-08-25 17:58:46,553 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 291 places, 321 transitions, 702 flow [2023-08-25 17:58:46,554 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 17:58:46,554 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 291 places, 321 transitions, 702 flow [2023-08-25 17:58:46,554 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 291 places, 321 transitions, 702 flow [2023-08-25 17:58:46,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 291 places, 321 transitions, 702 flow [2023-08-25 17:58:46,738 INFO L124 PetriNetUnfolderBase]: 146/1192 cut-off events. [2023-08-25 17:58:46,738 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-25 17:58:46,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1303 conditions, 1192 events. 146/1192 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 6037 event pairs, 23 based on Foata normal form. 0/998 useless extension candidates. Maximal degree in co-relation 787. Up to 80 conditions per place. [2023-08-25 17:58:46,870 INFO L119 LiptonReduction]: Number of co-enabled transitions 66880 [2023-08-25 17:58:49,853 INFO L134 LiptonReduction]: Checked pairs total: 271288 [2023-08-25 17:58:49,853 INFO L136 LiptonReduction]: Total number of compositions: 178 [2023-08-25 17:58:49,855 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 17:58:49,855 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;@76e41039, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 17:58:49,855 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-25 17:58:49,876 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 17:58:49,876 INFO L124 PetriNetUnfolderBase]: 49/261 cut-off events. [2023-08-25 17:58:49,876 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-25 17:58:49,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:58:49,877 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:58:49,877 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-25 17:58:49,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:58:49,877 INFO L85 PathProgramCache]: Analyzing trace with hash 141013066, now seen corresponding path program 1 times [2023-08-25 17:58:49,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:58:49,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640276339] [2023-08-25 17:58:49,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:58:49,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:58:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:58:49,900 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 17:58:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:58:49,919 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 17:58:49,919 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 17:58:49,920 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-25 17:58:49,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 17:58:49,920 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 17:58:49,920 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-25 17:58:49,921 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 17:58:49,921 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-25 17:58:49,946 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-25 17:58:49,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 332 places, 367 transitions, 812 flow [2023-08-25 17:58:50,332 INFO L124 PetriNetUnfolderBase]: 270/2026 cut-off events. [2023-08-25 17:58:50,332 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-25 17:58:50,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2258 conditions, 2026 events. 270/2026 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 12593 event pairs, 72 based on Foata normal form. 0/1718 useless extension candidates. Maximal degree in co-relation 1291. Up to 192 conditions per place. [2023-08-25 17:58:50,391 INFO L82 GeneralOperation]: Start removeDead. Operand has 332 places, 367 transitions, 812 flow [2023-08-25 17:58:50,408 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 332 places, 367 transitions, 812 flow [2023-08-25 17:58:50,408 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 17:58:50,408 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 332 places, 367 transitions, 812 flow [2023-08-25 17:58:50,409 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 332 places, 367 transitions, 812 flow [2023-08-25 17:58:50,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 332 places, 367 transitions, 812 flow [2023-08-25 17:58:50,805 INFO L124 PetriNetUnfolderBase]: 270/2026 cut-off events. [2023-08-25 17:58:50,805 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-25 17:58:50,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2258 conditions, 2026 events. 270/2026 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 12593 event pairs, 72 based on Foata normal form. 0/1718 useless extension candidates. Maximal degree in co-relation 1291. Up to 192 conditions per place. [2023-08-25 17:58:50,960 INFO L119 LiptonReduction]: Number of co-enabled transitions 92664 [2023-08-25 17:58:54,095 INFO L134 LiptonReduction]: Checked pairs total: 433644 [2023-08-25 17:58:54,095 INFO L136 LiptonReduction]: Total number of compositions: 201 [2023-08-25 17:58:54,097 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 17:58:54,097 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;@76e41039, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 17:58:54,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-25 17:58:54,128 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 17:58:54,129 INFO L124 PetriNetUnfolderBase]: 66/340 cut-off events. [2023-08-25 17:58:54,129 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2023-08-25 17:58:54,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:58:54,129 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:58:54,129 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-25 17:58:54,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:58:54,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1909401115, now seen corresponding path program 1 times [2023-08-25 17:58:54,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:58:54,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415875976] [2023-08-25 17:58:54,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:58:54,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:58:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:58:54,175 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 17:58:54,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:58:54,203 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 17:58:54,203 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 17:58:54,203 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-25 17:58:54,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 17:58:54,203 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 17:58:54,204 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-25 17:58:54,204 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 17:58:54,204 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-25 17:58:54,235 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-25 17:58:54,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 373 places, 413 transitions, 924 flow [2023-08-25 17:58:55,028 INFO L124 PetriNetUnfolderBase]: 538/3644 cut-off events. [2023-08-25 17:58:55,029 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-25 17:58:55,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4142 conditions, 3644 events. 538/3644 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 26997 event pairs, 201 based on Foata normal form. 0/3126 useless extension candidates. Maximal degree in co-relation 2244. Up to 448 conditions per place. [2023-08-25 17:58:55,241 INFO L82 GeneralOperation]: Start removeDead. Operand has 373 places, 413 transitions, 924 flow [2023-08-25 17:58:55,276 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 373 places, 413 transitions, 924 flow [2023-08-25 17:58:55,277 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 17:58:55,277 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 373 places, 413 transitions, 924 flow [2023-08-25 17:58:55,277 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 373 places, 413 transitions, 924 flow [2023-08-25 17:58:55,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 373 places, 413 transitions, 924 flow [2023-08-25 17:58:56,069 INFO L124 PetriNetUnfolderBase]: 538/3644 cut-off events. [2023-08-25 17:58:56,069 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-25 17:58:56,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4142 conditions, 3644 events. 538/3644 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 26997 event pairs, 201 based on Foata normal form. 0/3126 useless extension candidates. Maximal degree in co-relation 2244. Up to 448 conditions per place. [2023-08-25 17:58:56,408 INFO L119 LiptonReduction]: Number of co-enabled transitions 122584 [2023-08-25 17:59:00,119 INFO L134 LiptonReduction]: Checked pairs total: 515636 [2023-08-25 17:59:00,120 INFO L136 LiptonReduction]: Total number of compositions: 218 [2023-08-25 17:59:00,121 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 17:59:00,122 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;@76e41039, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 17:59:00,122 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-25 17:59:00,162 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 17:59:00,162 INFO L124 PetriNetUnfolderBase]: 86/438 cut-off events. [2023-08-25 17:59:00,162 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2023-08-25 17:59:00,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:59:00,162 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:59:00,162 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-25 17:59:00,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:59:00,163 INFO L85 PathProgramCache]: Analyzing trace with hash 330346875, now seen corresponding path program 1 times [2023-08-25 17:59:00,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:59:00,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752905128] [2023-08-25 17:59:00,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:59:00,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:59:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:59:00,185 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 17:59:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:59:00,204 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 17:59:00,204 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 17:59:00,204 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-25 17:59:00,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 17:59:00,204 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 17:59:00,205 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-25 17:59:00,205 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 17:59:00,205 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-25 17:59:00,233 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-25 17:59:00,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 414 places, 459 transitions, 1038 flow [2023-08-25 17:59:01,897 INFO L124 PetriNetUnfolderBase]: 1126/6862 cut-off events. [2023-08-25 17:59:01,897 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-25 17:59:02,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7947 conditions, 6862 events. 1126/6862 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 60247 event pairs, 522 based on Foata normal form. 0/5942 useless extension candidates. Maximal degree in co-relation 4126. Up to 1024 conditions per place. [2023-08-25 17:59:02,009 INFO L82 GeneralOperation]: Start removeDead. Operand has 414 places, 459 transitions, 1038 flow [2023-08-25 17:59:02,053 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 414 places, 459 transitions, 1038 flow [2023-08-25 17:59:02,054 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 17:59:02,054 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 414 places, 459 transitions, 1038 flow [2023-08-25 17:59:02,054 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 414 places, 459 transitions, 1038 flow [2023-08-25 17:59:02,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 414 places, 459 transitions, 1038 flow [2023-08-25 17:59:03,510 INFO L124 PetriNetUnfolderBase]: 1126/6862 cut-off events. [2023-08-25 17:59:03,511 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-25 17:59:03,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7947 conditions, 6862 events. 1126/6862 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 60247 event pairs, 522 based on Foata normal form. 0/5942 useless extension candidates. Maximal degree in co-relation 4126. Up to 1024 conditions per place. [2023-08-25 17:59:03,900 INFO L119 LiptonReduction]: Number of co-enabled transitions 156640 [2023-08-25 17:59:07,399 INFO L134 LiptonReduction]: Checked pairs total: 675244 [2023-08-25 17:59:07,399 INFO L136 LiptonReduction]: Total number of compositions: 240 [2023-08-25 17:59:07,400 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 17:59:07,401 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;@76e41039, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 17:59:07,401 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-25 17:59:07,485 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 17:59:07,485 INFO L124 PetriNetUnfolderBase]: 119/568 cut-off events. [2023-08-25 17:59:07,485 INFO L125 PetriNetUnfolderBase]: For 202/202 co-relation queries the response was YES. [2023-08-25 17:59:07,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:59:07,485 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:59:07,485 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-25 17:59:07,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:59:07,486 INFO L85 PathProgramCache]: Analyzing trace with hash 427534177, now seen corresponding path program 1 times [2023-08-25 17:59:07,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:59:07,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986069560] [2023-08-25 17:59:07,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:59:07,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:59:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:59:07,508 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 17:59:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:59:07,549 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 17:59:07,549 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 17:59:07,549 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-25 17:59:07,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 17:59:07,550 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 17:59:07,550 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-25 17:59:07,550 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 17:59:07,550 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-25 17:59:07,583 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-25 17:59:07,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 455 places, 505 transitions, 1154 flow [2023-08-25 17:59:10,845 INFO L124 PetriNetUnfolderBase]: 2418/13344 cut-off events. [2023-08-25 17:59:10,846 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-25 17:59:11,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15721 conditions, 13344 events. 2418/13344 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 135584 event pairs, 1291 based on Foata normal form. 0/11638 useless extension candidates. Maximal degree in co-relation 7929. Up to 2304 conditions per place. [2023-08-25 17:59:11,124 INFO L82 GeneralOperation]: Start removeDead. Operand has 455 places, 505 transitions, 1154 flow [2023-08-25 17:59:11,241 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 455 places, 505 transitions, 1154 flow [2023-08-25 17:59:11,241 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 17:59:11,241 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 455 places, 505 transitions, 1154 flow [2023-08-25 17:59:11,241 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 455 places, 505 transitions, 1154 flow [2023-08-25 17:59:11,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 455 places, 505 transitions, 1154 flow [2023-08-25 17:59:14,427 INFO L124 PetriNetUnfolderBase]: 2418/13344 cut-off events. [2023-08-25 17:59:14,427 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-25 17:59:14,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15721 conditions, 13344 events. 2418/13344 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 135584 event pairs, 1291 based on Foata normal form. 0/11638 useless extension candidates. Maximal degree in co-relation 7929. Up to 2304 conditions per place. [2023-08-25 17:59:15,454 INFO L119 LiptonReduction]: Number of co-enabled transitions 194832 [2023-08-25 17:59:18,949 INFO L134 LiptonReduction]: Checked pairs total: 835149 [2023-08-25 17:59:18,952 INFO L136 LiptonReduction]: Total number of compositions: 255 [2023-08-25 17:59:18,953 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 17:59:18,953 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;@76e41039, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 17:59:18,954 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-25 17:59:19,046 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 17:59:19,047 INFO L124 PetriNetUnfolderBase]: 153/717 cut-off events. [2023-08-25 17:59:19,047 INFO L125 PetriNetUnfolderBase]: For 309/309 co-relation queries the response was YES. [2023-08-25 17:59:19,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:59:19,047 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:59:19,047 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-25 17:59:19,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:59:19,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1789645357, now seen corresponding path program 1 times [2023-08-25 17:59:19,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:59:19,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563411883] [2023-08-25 17:59:19,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:59:19,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:59:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:59:19,079 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 17:59:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:59:19,100 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 17:59:19,101 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 17:59:19,101 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-25 17:59:19,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-25 17:59:19,101 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 17:59:19,102 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-25 17:59:19,102 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 17:59:19,102 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-25 17:59:19,138 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-25 17:59:19,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 496 places, 551 transitions, 1272 flow [2023-08-25 17:59:26,243 INFO L124 PetriNetUnfolderBase]: 5246/26482 cut-off events. [2023-08-25 17:59:26,243 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-25 17:59:26,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31688 conditions, 26482 events. 5246/26482 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 306422 event pairs, 3084 based on Foata normal form. 0/23222 useless extension candidates. Maximal degree in co-relation 15701. Up to 5120 conditions per place. [2023-08-25 17:59:26,873 INFO L82 GeneralOperation]: Start removeDead. Operand has 496 places, 551 transitions, 1272 flow [2023-08-25 17:59:27,109 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 496 places, 551 transitions, 1272 flow [2023-08-25 17:59:27,110 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 17:59:27,110 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 496 places, 551 transitions, 1272 flow [2023-08-25 17:59:27,110 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 496 places, 551 transitions, 1272 flow [2023-08-25 17:59:27,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 496 places, 551 transitions, 1272 flow [2023-08-25 17:59:34,197 INFO L124 PetriNetUnfolderBase]: 5246/26482 cut-off events. [2023-08-25 17:59:34,198 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-25 17:59:34,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31688 conditions, 26482 events. 5246/26482 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 306422 event pairs, 3084 based on Foata normal form. 0/23222 useless extension candidates. Maximal degree in co-relation 15701. Up to 5120 conditions per place. [2023-08-25 17:59:36,402 INFO L119 LiptonReduction]: Number of co-enabled transitions 237160 [2023-08-25 17:59:40,078 INFO L134 LiptonReduction]: Checked pairs total: 1038701 [2023-08-25 17:59:40,078 INFO L136 LiptonReduction]: Total number of compositions: 275 [2023-08-25 17:59:40,080 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 17:59:40,080 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;@76e41039, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 17:59:40,080 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-25 17:59:40,221 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 17:59:40,222 INFO L124 PetriNetUnfolderBase]: 228/969 cut-off events. [2023-08-25 17:59:40,222 INFO L125 PetriNetUnfolderBase]: For 469/469 co-relation queries the response was YES. [2023-08-25 17:59:40,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:59:40,222 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:59:40,222 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-25 17:59:40,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:59:40,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1603774415, now seen corresponding path program 1 times [2023-08-25 17:59:40,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:59:40,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739904502] [2023-08-25 17:59:40,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:59:40,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:59:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:59:40,244 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 17:59:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:59:40,262 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 17:59:40,262 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 17:59:40,263 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-25 17:59:40,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-25 17:59:40,263 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 17:59:40,263 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-25 17:59:40,263 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 17:59:40,263 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-25 17:59:40,299 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-25 17:59:40,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 537 places, 597 transitions, 1392 flow [2023-08-25 17:59:55,587 INFO L124 PetriNetUnfolderBase]: 11402/53188 cut-off events. [2023-08-25 17:59:55,588 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-25 17:59:57,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64552 conditions, 53188 events. 11402/53188 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 869. Compared 683187 event pairs, 7181 based on Foata normal form. 0/46838 useless extension candidates. Maximal degree in co-relation 31666. Up to 11264 conditions per place. [2023-08-25 17:59:57,778 INFO L82 GeneralOperation]: Start removeDead. Operand has 537 places, 597 transitions, 1392 flow [2023-08-25 17:59:58,449 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 537 places, 597 transitions, 1392 flow [2023-08-25 17:59:58,450 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 17:59:58,450 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 537 places, 597 transitions, 1392 flow [2023-08-25 17:59:58,450 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 537 places, 597 transitions, 1392 flow [2023-08-25 17:59:58,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 537 places, 597 transitions, 1392 flow [2023-08-25 18:00:14,394 INFO L124 PetriNetUnfolderBase]: 11402/53188 cut-off events. [2023-08-25 18:00:14,395 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-25 18:00:16,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64552 conditions, 53188 events. 11402/53188 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 869. Compared 683187 event pairs, 7181 based on Foata normal form. 0/46838 useless extension candidates. Maximal degree in co-relation 31666. Up to 11264 conditions per place. [2023-08-25 18:00:21,144 INFO L119 LiptonReduction]: Number of co-enabled transitions 283624 [2023-08-25 18:00:24,970 INFO L134 LiptonReduction]: Checked pairs total: 1246175 [2023-08-25 18:00:24,970 INFO L136 LiptonReduction]: Total number of compositions: 296 [2023-08-25 18:00:24,971 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 18:00:24,972 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;@76e41039, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 18:00:24,972 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-25 18:00:25,116 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 18:00:25,117 INFO L124 PetriNetUnfolderBase]: 354/1350 cut-off events. [2023-08-25 18:00:25,117 INFO L125 PetriNetUnfolderBase]: For 713/713 co-relation queries the response was YES. [2023-08-25 18:00:25,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:00:25,117 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 18:00:25,117 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-25 18:00:25,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:00:25,118 INFO L85 PathProgramCache]: Analyzing trace with hash 994016275, now seen corresponding path program 1 times [2023-08-25 18:00:25,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:00:25,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629837281] [2023-08-25 18:00:25,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:00:25,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:00:25,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:00:25,149 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 18:00:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:00:25,179 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 18:00:25,179 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 18:00:25,180 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-25 18:00:25,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-25 18:00:25,180 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 18:00:25,180 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-25 18:00:25,181 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 18:00:25,181 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-25 18:00:25,219 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-25 18:00:25,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 578 places, 643 transitions, 1514 flow [2023-08-25 18:01:03,355 INFO L124 PetriNetUnfolderBase]: 24726/107542 cut-off events. [2023-08-25 18:01:03,355 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-25 18:01:12,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132233 conditions, 107542 events. 24726/107542 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1645. Compared 1515561 event pairs, 16398 based on Foata normal form. 0/95030 useless extension candidates. Maximal degree in co-relation 64528. Up to 24576 conditions per place. [2023-08-25 18:01:12,647 INFO L82 GeneralOperation]: Start removeDead. Operand has 578 places, 643 transitions, 1514 flow [2023-08-25 18:01:14,898 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 578 places, 643 transitions, 1514 flow [2023-08-25 18:01:14,898 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 18:01:14,898 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 578 places, 643 transitions, 1514 flow [2023-08-25 18:01:14,898 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 578 places, 643 transitions, 1514 flow [2023-08-25 18:01:14,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 578 places, 643 transitions, 1514 flow [2023-08-25 18:01:49,388 INFO L124 PetriNetUnfolderBase]: 24726/107542 cut-off events. [2023-08-25 18:01:49,388 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-25 18:01:58,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132233 conditions, 107542 events. 24726/107542 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1645. Compared 1515561 event pairs, 16398 based on Foata normal form. 0/95030 useless extension candidates. Maximal degree in co-relation 64528. Up to 24576 conditions per place. [2023-08-25 18:02:13,976 INFO L119 LiptonReduction]: Number of co-enabled transitions 334224 [2023-08-25 18:02:18,397 INFO L134 LiptonReduction]: Checked pairs total: 1491762 [2023-08-25 18:02:18,397 INFO L136 LiptonReduction]: Total number of compositions: 316 [2023-08-25 18:02:18,398 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 18:02:18,399 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;@76e41039, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 18:02:18,399 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-25 18:02:18,656 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 18:02:18,656 INFO L124 PetriNetUnfolderBase]: 580/1983 cut-off events. [2023-08-25 18:02:18,657 INFO L125 PetriNetUnfolderBase]: For 1089/1089 co-relation queries the response was YES. [2023-08-25 18:02:18,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:02:18,657 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 18:02:18,657 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-25 18:02:18,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:02:18,657 INFO L85 PathProgramCache]: Analyzing trace with hash -736794623, now seen corresponding path program 1 times [2023-08-25 18:02:18,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:02:18,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813123088] [2023-08-25 18:02:18,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:02:18,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:02:18,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:02:18,687 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 18:02:18,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:02:18,712 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 18:02:18,712 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 18:02:18,713 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-25 18:02:18,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-25 18:02:18,713 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 18:02:18,713 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-25 18:02:18,714 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 18:02:18,714 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-25 18:02:18,770 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-25 18:02:18,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 619 places, 689 transitions, 1638 flow [2023-08-25 18:03:54,811 INFO L124 PetriNetUnfolderBase]: 53410/218216 cut-off events. [2023-08-25 18:03:54,811 INFO L125 PetriNetUnfolderBase]: For 53690/53690 co-relation queries the response was YES. [2023-08-25 18:04:16,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271595 conditions, 218216 events. 53410/218216 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 3162. Compared 3359546 event pairs, 36879 based on Foata normal form. 0/193398 useless extension candidates. Maximal degree in co-relation 132207. Up to 53248 conditions per place. [2023-08-25 18:04:16,471 INFO L82 GeneralOperation]: Start removeDead. Operand has 619 places, 689 transitions, 1638 flow [2023-08-25 18:04:23,431 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 619 places, 689 transitions, 1638 flow [2023-08-25 18:04:23,432 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 18:04:23,432 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 619 places, 689 transitions, 1638 flow [2023-08-25 18:04:23,432 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 619 places, 689 transitions, 1638 flow [2023-08-25 18:04:23,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 619 places, 689 transitions, 1638 flow