/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 06:38:24,819 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 06:38:24,871 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 06:38:24,875 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 06:38:24,875 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 06:38:24,894 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 06:38:24,895 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 06:38:24,895 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 06:38:24,896 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 06:38:24,896 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 06:38:24,897 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 06:38:24,897 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 06:38:24,897 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 06:38:24,898 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 06:38:24,898 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 06:38:24,898 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 06:38:24,899 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 06:38:24,899 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 06:38:24,899 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 06:38:24,900 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 06:38:24,900 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 06:38:24,900 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 06:38:24,901 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 06:38:24,901 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 06:38:24,901 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 06:38:24,901 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 06:38:24,902 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 06:38:24,902 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 06:38:24,902 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 06:38:24,902 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 06:38:24,903 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 06:38:24,903 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 06:38:24,903 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 06:38:24,903 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 06:38:24,904 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 06:38:24,904 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 06:38:25,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 06:38:25,235 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 06:38:25,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 06:38:25,239 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 06:38:25,239 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 06:38:25,241 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2023-08-24 06:38:26,365 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 06:38:26,556 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 06:38:26,557 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2023-08-24 06:38:26,570 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dfd6c592/05dd576cdf6945529d855e232d8f59e1/FLAGa1bd9dbc4 [2023-08-24 06:38:26,584 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dfd6c592/05dd576cdf6945529d855e232d8f59e1 [2023-08-24 06:38:26,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 06:38:26,587 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 06:38:26,588 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 06:38:26,589 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 06:38:26,591 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 06:38:26,591 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:38:26" (1/1) ... [2023-08-24 06:38:26,592 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ac7bf6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:38:26, skipping insertion in model container [2023-08-24 06:38:26,592 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:38:26" (1/1) ... [2023-08-24 06:38:26,638 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 06:38:26,938 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_racefree.i[30176,30189] [2023-08-24 06:38:26,955 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 06:38:26,974 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 06:38:27,002 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-24 06:38:27,004 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-24 06:38:27,019 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_racefree.i[30176,30189] [2023-08-24 06:38:27,029 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 06:38:27,079 INFO L206 MainTranslator]: Completed translation [2023-08-24 06:38:27,081 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:38:27 WrapperNode [2023-08-24 06:38:27,081 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 06:38:27,082 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 06:38:27,083 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 06:38:27,083 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 06:38:27,089 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:38:27" (1/1) ... [2023-08-24 06:38:27,115 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:38:27" (1/1) ... [2023-08-24 06:38:27,142 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 90 [2023-08-24 06:38:27,143 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 06:38:27,143 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 06:38:27,143 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 06:38:27,143 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 06:38:27,152 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:38:27" (1/1) ... [2023-08-24 06:38:27,152 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:38:27" (1/1) ... [2023-08-24 06:38:27,156 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:38:27" (1/1) ... [2023-08-24 06:38:27,156 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:38:27" (1/1) ... [2023-08-24 06:38:27,169 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:38:27" (1/1) ... [2023-08-24 06:38:27,172 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:38:27" (1/1) ... [2023-08-24 06:38:27,174 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:38:27" (1/1) ... [2023-08-24 06:38:27,175 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:38:27" (1/1) ... [2023-08-24 06:38:27,177 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 06:38:27,178 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 06:38:27,178 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 06:38:27,178 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 06:38:27,179 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:38:27" (1/1) ... [2023-08-24 06:38:27,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 06:38:27,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 06:38:27,213 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-24 06:38:27,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-24 06:38:27,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 06:38:27,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 06:38:27,257 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 06:38:27,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 06:38:27,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 06:38:27,258 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-24 06:38:27,258 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-24 06:38:27,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 06:38:27,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 06:38:27,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 06:38:27,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 06:38:27,260 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 06:38:27,377 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 06:38:27,378 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 06:38:27,564 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 06:38:27,570 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 06:38:27,571 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-24 06:38:27,572 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:38:27 BoogieIcfgContainer [2023-08-24 06:38:27,572 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 06:38:27,574 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 06:38:27,574 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 06:38:27,577 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 06:38:27,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 06:38:26" (1/3) ... [2023-08-24 06:38:27,578 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd66932 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:38:27, skipping insertion in model container [2023-08-24 06:38:27,578 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:38:27" (2/3) ... [2023-08-24 06:38:27,579 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd66932 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:38:27, skipping insertion in model container [2023-08-24 06:38:27,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:38:27" (3/3) ... [2023-08-24 06:38:27,580 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_51-mutexptr_racefree.i [2023-08-24 06:38:27,595 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 06:38:27,596 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 06:38:27,596 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 06:38:27,647 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-24 06:38:27,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 125 transitions, 258 flow [2023-08-24 06:38:27,769 INFO L124 PetriNetUnfolderBase]: 17/163 cut-off events. [2023-08-24 06:38:27,769 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-24 06:38:27,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 163 events. 17/163 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 373 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 78. Up to 4 conditions per place. [2023-08-24 06:38:27,777 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 125 transitions, 258 flow [2023-08-24 06:38:27,782 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 120 transitions, 245 flow [2023-08-24 06:38:27,785 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:38:27,797 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 112 places, 120 transitions, 245 flow [2023-08-24 06:38:27,800 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 112 places, 120 transitions, 245 flow [2023-08-24 06:38:27,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 120 transitions, 245 flow [2023-08-24 06:38:27,833 INFO L124 PetriNetUnfolderBase]: 16/158 cut-off events. [2023-08-24 06:38:27,833 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 06:38:27,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 158 events. 16/158 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 357 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 78. Up to 4 conditions per place. [2023-08-24 06:38:27,836 INFO L119 LiptonReduction]: Number of co-enabled transitions 3080 [2023-08-24 06:38:31,126 INFO L134 LiptonReduction]: Checked pairs total: 5191 [2023-08-24 06:38:31,127 INFO L136 LiptonReduction]: Total number of compositions: 103 [2023-08-24 06:38:31,138 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:38:31,143 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;@5915069d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:38:31,144 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:38:31,148 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:38:31,148 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2023-08-24 06:38:31,148 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 06:38:31,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:38:31,149 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-24 06:38:31,149 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:38:31,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:38:31,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1014415402, now seen corresponding path program 1 times [2023-08-24 06:38:31,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:38:31,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259901531] [2023-08-24 06:38:31,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:38:31,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:38:31,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:38:31,264 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:38:31,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:38:31,302 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:38:31,304 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:38:31,305 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:38:31,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 06:38:31,307 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:38:31,309 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:38:31,310 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:38:31,310 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-24 06:38:31,330 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-24 06:38:31,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 162 transitions, 342 flow [2023-08-24 06:38:31,366 INFO L124 PetriNetUnfolderBase]: 31/263 cut-off events. [2023-08-24 06:38:31,366 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-24 06:38:31,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 263 events. 31/263 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 778 event pairs, 0 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 165. Up to 8 conditions per place. [2023-08-24 06:38:31,369 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 162 transitions, 342 flow [2023-08-24 06:38:31,371 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 162 transitions, 342 flow [2023-08-24 06:38:31,371 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:38:31,371 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 162 transitions, 342 flow [2023-08-24 06:38:31,371 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 162 transitions, 342 flow [2023-08-24 06:38:31,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 162 transitions, 342 flow [2023-08-24 06:38:31,404 INFO L124 PetriNetUnfolderBase]: 31/263 cut-off events. [2023-08-24 06:38:31,404 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-24 06:38:31,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 263 events. 31/263 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 778 event pairs, 0 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 165. Up to 8 conditions per place. [2023-08-24 06:38:31,412 INFO L119 LiptonReduction]: Number of co-enabled transitions 9380 [2023-08-24 06:38:34,778 INFO L134 LiptonReduction]: Checked pairs total: 19310 [2023-08-24 06:38:34,779 INFO L136 LiptonReduction]: Total number of compositions: 127 [2023-08-24 06:38:34,781 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:38:34,782 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;@5915069d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:38:34,782 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:38:34,787 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:38:34,787 INFO L124 PetriNetUnfolderBase]: 12/55 cut-off events. [2023-08-24 06:38:34,787 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 06:38:34,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:38:34,787 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-24 06:38:34,787 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:38:34,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:38:34,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1180882590, now seen corresponding path program 1 times [2023-08-24 06:38:34,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:38:34,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271993674] [2023-08-24 06:38:34,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:38:34,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:38:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:38:34,817 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:38:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:38:34,846 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:38:34,846 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:38:34,846 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:38:34,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 06:38:34,847 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:38:34,847 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:38:34,848 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:38:34,848 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-24 06:38:34,869 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-24 06:38:34,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 199 transitions, 428 flow [2023-08-24 06:38:34,946 INFO L124 PetriNetUnfolderBase]: 50/396 cut-off events. [2023-08-24 06:38:34,947 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-24 06:38:34,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 424 conditions, 396 events. 50/396 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1347 event pairs, 1 based on Foata normal form. 0/338 useless extension candidates. Maximal degree in co-relation 271. Up to 16 conditions per place. [2023-08-24 06:38:34,952 INFO L82 GeneralOperation]: Start removeDead. Operand has 180 places, 199 transitions, 428 flow [2023-08-24 06:38:34,955 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 199 transitions, 428 flow [2023-08-24 06:38:34,955 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:38:34,956 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 180 places, 199 transitions, 428 flow [2023-08-24 06:38:34,956 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 180 places, 199 transitions, 428 flow [2023-08-24 06:38:34,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 199 transitions, 428 flow [2023-08-24 06:38:35,004 INFO L124 PetriNetUnfolderBase]: 50/396 cut-off events. [2023-08-24 06:38:35,004 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-24 06:38:35,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 424 conditions, 396 events. 50/396 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1347 event pairs, 1 based on Foata normal form. 0/338 useless extension candidates. Maximal degree in co-relation 271. Up to 16 conditions per place. [2023-08-24 06:38:35,022 INFO L119 LiptonReduction]: Number of co-enabled transitions 18060 [2023-08-24 06:38:38,506 INFO L134 LiptonReduction]: Checked pairs total: 41580 [2023-08-24 06:38:38,506 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-08-24 06:38:38,508 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:38:38,509 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;@5915069d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:38:38,509 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:38:38,516 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:38:38,516 INFO L124 PetriNetUnfolderBase]: 19/87 cut-off events. [2023-08-24 06:38:38,516 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-24 06:38:38,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:38:38,516 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-24 06:38:38,517 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:38:38,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:38:38,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1660335666, now seen corresponding path program 1 times [2023-08-24 06:38:38,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:38:38,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996234909] [2023-08-24 06:38:38,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:38:38,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:38:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:38:38,561 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:38:38,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:38:38,595 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:38:38,595 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:38:38,595 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:38:38,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 06:38:38,595 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:38:38,596 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:38:38,596 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:38:38,596 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-24 06:38:38,651 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-24 06:38:38,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 236 transitions, 516 flow [2023-08-24 06:38:38,733 INFO L124 PetriNetUnfolderBase]: 81/597 cut-off events. [2023-08-24 06:38:38,734 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-24 06:38:38,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 652 conditions, 597 events. 81/597 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2345 event pairs, 6 based on Foata normal form. 0/511 useless extension candidates. Maximal degree in co-relation 416. Up to 32 conditions per place. [2023-08-24 06:38:38,746 INFO L82 GeneralOperation]: Start removeDead. Operand has 212 places, 236 transitions, 516 flow [2023-08-24 06:38:38,751 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 212 places, 236 transitions, 516 flow [2023-08-24 06:38:38,751 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:38:38,751 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 212 places, 236 transitions, 516 flow [2023-08-24 06:38:38,751 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 212 places, 236 transitions, 516 flow [2023-08-24 06:38:38,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 236 transitions, 516 flow [2023-08-24 06:38:38,823 INFO L124 PetriNetUnfolderBase]: 81/597 cut-off events. [2023-08-24 06:38:38,823 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-24 06:38:38,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 652 conditions, 597 events. 81/597 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2345 event pairs, 6 based on Foata normal form. 0/511 useless extension candidates. Maximal degree in co-relation 416. Up to 32 conditions per place. [2023-08-24 06:38:38,849 INFO L119 LiptonReduction]: Number of co-enabled transitions 29400 [2023-08-24 06:38:42,195 INFO L134 LiptonReduction]: Checked pairs total: 68142 [2023-08-24 06:38:42,195 INFO L136 LiptonReduction]: Total number of compositions: 172 [2023-08-24 06:38:42,197 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:38:42,198 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;@5915069d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:38:42,198 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:38:42,208 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:38:42,208 INFO L124 PetriNetUnfolderBase]: 33/131 cut-off events. [2023-08-24 06:38:42,208 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-08-24 06:38:42,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:38:42,209 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-24 06:38:42,209 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:38:42,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:38:42,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1528345766, now seen corresponding path program 1 times [2023-08-24 06:38:42,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:38:42,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581226328] [2023-08-24 06:38:42,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:38:42,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:38:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:38:42,247 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:38:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:38:42,295 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:38:42,295 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:38:42,295 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:38:42,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 06:38:42,295 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:38:42,296 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:38:42,296 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:38:42,296 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-24 06:38:42,330 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-24 06:38:42,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 273 transitions, 606 flow [2023-08-24 06:38:42,467 INFO L124 PetriNetUnfolderBase]: 140/938 cut-off events. [2023-08-24 06:38:42,467 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-24 06:38:42,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1049 conditions, 938 events. 140/938 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4308 event pairs, 23 based on Foata normal form. 0/808 useless extension candidates. Maximal degree in co-relation 642. Up to 80 conditions per place. [2023-08-24 06:38:42,484 INFO L82 GeneralOperation]: Start removeDead. Operand has 244 places, 273 transitions, 606 flow [2023-08-24 06:38:42,493 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 244 places, 273 transitions, 606 flow [2023-08-24 06:38:42,493 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:38:42,493 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 244 places, 273 transitions, 606 flow [2023-08-24 06:38:42,493 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 244 places, 273 transitions, 606 flow [2023-08-24 06:38:42,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 273 transitions, 606 flow [2023-08-24 06:38:42,652 INFO L124 PetriNetUnfolderBase]: 140/938 cut-off events. [2023-08-24 06:38:42,652 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-24 06:38:42,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1049 conditions, 938 events. 140/938 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4308 event pairs, 23 based on Foata normal form. 0/808 useless extension candidates. Maximal degree in co-relation 642. Up to 80 conditions per place. [2023-08-24 06:38:42,694 INFO L119 LiptonReduction]: Number of co-enabled transitions 43400 [2023-08-24 06:38:46,228 INFO L134 LiptonReduction]: Checked pairs total: 104667 [2023-08-24 06:38:46,228 INFO L136 LiptonReduction]: Total number of compositions: 195 [2023-08-24 06:38:46,230 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:38:46,231 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;@5915069d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:38:46,231 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:38:46,243 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:38:46,243 INFO L124 PetriNetUnfolderBase]: 46/179 cut-off events. [2023-08-24 06:38:46,243 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-24 06:38:46,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:38:46,243 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:38:46,244 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:38:46,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:38:46,244 INFO L85 PathProgramCache]: Analyzing trace with hash -989653527, now seen corresponding path program 1 times [2023-08-24 06:38:46,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:38:46,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588481456] [2023-08-24 06:38:46,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:38:46,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:38:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:38:46,271 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:38:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:38:46,292 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:38:46,292 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:38:46,293 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:38:46,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 06:38:46,293 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:38:46,294 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:38:46,294 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:38:46,294 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-24 06:38:46,320 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-24 06:38:46,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 276 places, 310 transitions, 698 flow [2023-08-24 06:38:46,571 INFO L124 PetriNetUnfolderBase]: 263/1567 cut-off events. [2023-08-24 06:38:46,571 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-24 06:38:46,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1799 conditions, 1567 events. 263/1567 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 8703 event pairs, 72 based on Foata normal form. 0/1361 useless extension candidates. Maximal degree in co-relation 1037. Up to 192 conditions per place. [2023-08-24 06:38:46,604 INFO L82 GeneralOperation]: Start removeDead. Operand has 276 places, 310 transitions, 698 flow [2023-08-24 06:38:46,617 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 276 places, 310 transitions, 698 flow [2023-08-24 06:38:46,617 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:38:46,617 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 276 places, 310 transitions, 698 flow [2023-08-24 06:38:46,617 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 276 places, 310 transitions, 698 flow [2023-08-24 06:38:46,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 276 places, 310 transitions, 698 flow [2023-08-24 06:38:46,837 INFO L124 PetriNetUnfolderBase]: 263/1567 cut-off events. [2023-08-24 06:38:46,838 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-24 06:38:46,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1799 conditions, 1567 events. 263/1567 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 8703 event pairs, 72 based on Foata normal form. 0/1361 useless extension candidates. Maximal degree in co-relation 1037. Up to 192 conditions per place. [2023-08-24 06:38:46,933 INFO L119 LiptonReduction]: Number of co-enabled transitions 60060 [2023-08-24 06:38:51,041 INFO L134 LiptonReduction]: Checked pairs total: 147942 [2023-08-24 06:38:51,042 INFO L136 LiptonReduction]: Total number of compositions: 221 [2023-08-24 06:38:51,043 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:38:51,044 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;@5915069d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:38:51,044 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:38:51,061 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:38:51,062 INFO L124 PetriNetUnfolderBase]: 62/237 cut-off events. [2023-08-24 06:38:51,062 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2023-08-24 06:38:51,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:38:51,062 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:38:51,062 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:38:51,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:38:51,063 INFO L85 PathProgramCache]: Analyzing trace with hash -812739718, now seen corresponding path program 1 times [2023-08-24 06:38:51,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:38:51,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688346171] [2023-08-24 06:38:51,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:38:51,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:38:51,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:38:51,112 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:38:51,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:38:51,157 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:38:51,157 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:38:51,157 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:38:51,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 06:38:51,158 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:38:51,161 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:38:51,161 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:38:51,162 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-24 06:38:51,196 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-24 06:38:51,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 308 places, 347 transitions, 792 flow [2023-08-24 06:38:51,697 INFO L124 PetriNetUnfolderBase]: 530/2788 cut-off events. [2023-08-24 06:38:51,697 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-24 06:38:51,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3286 conditions, 2788 events. 530/2788 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 18656 event pairs, 201 based on Foata normal form. 0/2442 useless extension candidates. Maximal degree in co-relation 1785. Up to 448 conditions per place. [2023-08-24 06:38:51,764 INFO L82 GeneralOperation]: Start removeDead. Operand has 308 places, 347 transitions, 792 flow [2023-08-24 06:38:51,795 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 308 places, 347 transitions, 792 flow [2023-08-24 06:38:51,795 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:38:51,795 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 308 places, 347 transitions, 792 flow [2023-08-24 06:38:51,795 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 308 places, 347 transitions, 792 flow [2023-08-24 06:38:51,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 308 places, 347 transitions, 792 flow [2023-08-24 06:38:52,294 INFO L124 PetriNetUnfolderBase]: 530/2788 cut-off events. [2023-08-24 06:38:52,295 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-24 06:38:52,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3286 conditions, 2788 events. 530/2788 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 18656 event pairs, 201 based on Foata normal form. 0/2442 useless extension candidates. Maximal degree in co-relation 1785. Up to 448 conditions per place. [2023-08-24 06:38:52,590 INFO L119 LiptonReduction]: Number of co-enabled transitions 79380 [2023-08-24 06:38:56,575 INFO L134 LiptonReduction]: Checked pairs total: 199275 [2023-08-24 06:38:56,576 INFO L136 LiptonReduction]: Total number of compositions: 241 [2023-08-24 06:38:56,577 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:38:56,577 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;@5915069d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:38:56,578 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:38:56,602 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:38:56,602 INFO L124 PetriNetUnfolderBase]: 76/308 cut-off events. [2023-08-24 06:38:56,602 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2023-08-24 06:38:56,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:38:56,602 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:38:56,602 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:38:56,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:38:56,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1831834682, now seen corresponding path program 1 times [2023-08-24 06:38:56,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:38:56,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132044971] [2023-08-24 06:38:56,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:38:56,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:38:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:38:56,640 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:38:56,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:38:56,672 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:38:56,673 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:38:56,673 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:38:56,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 06:38:56,673 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:38:56,674 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:38:56,674 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:38:56,674 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-24 06:38:56,708 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-24 06:38:56,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 340 places, 384 transitions, 888 flow [2023-08-24 06:38:57,701 INFO L124 PetriNetUnfolderBase]: 1117/5225 cut-off events. [2023-08-24 06:38:57,702 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-24 06:38:57,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6310 conditions, 5225 events. 1117/5225 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 41993 event pairs, 522 based on Foata normal form. 0/4611 useless extension candidates. Maximal degree in co-relation 3270. Up to 1024 conditions per place. [2023-08-24 06:38:57,802 INFO L82 GeneralOperation]: Start removeDead. Operand has 340 places, 384 transitions, 888 flow [2023-08-24 06:38:57,856 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 340 places, 384 transitions, 888 flow [2023-08-24 06:38:57,857 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:38:57,857 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 340 places, 384 transitions, 888 flow [2023-08-24 06:38:57,857 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 340 places, 384 transitions, 888 flow [2023-08-24 06:38:57,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 340 places, 384 transitions, 888 flow [2023-08-24 06:38:58,787 INFO L124 PetriNetUnfolderBase]: 1117/5225 cut-off events. [2023-08-24 06:38:58,788 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-24 06:38:58,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6310 conditions, 5225 events. 1117/5225 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 41993 event pairs, 522 based on Foata normal form. 0/4611 useless extension candidates. Maximal degree in co-relation 3270. Up to 1024 conditions per place. [2023-08-24 06:38:59,156 INFO L119 LiptonReduction]: Number of co-enabled transitions 101360 [2023-08-24 06:39:03,507 INFO L134 LiptonReduction]: Checked pairs total: 261223 [2023-08-24 06:39:03,507 INFO L136 LiptonReduction]: Total number of compositions: 261 [2023-08-24 06:39:03,509 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:39:03,509 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;@5915069d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:39:03,510 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:39:03,558 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:39:03,558 INFO L124 PetriNetUnfolderBase]: 107/410 cut-off events. [2023-08-24 06:39:03,558 INFO L125 PetriNetUnfolderBase]: For 202/202 co-relation queries the response was YES. [2023-08-24 06:39:03,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:39:03,558 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:39:03,558 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:39:03,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:39:03,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1750983845, now seen corresponding path program 1 times [2023-08-24 06:39:03,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:39:03,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308065409] [2023-08-24 06:39:03,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:39:03,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:39:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:39:03,579 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:39:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:39:03,598 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:39:03,599 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:39:03,599 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:39:03,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 06:39:03,599 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:39:03,599 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:39:03,600 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:39:03,600 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-24 06:39:03,631 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-24 06:39:03,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 372 places, 421 transitions, 986 flow [2023-08-24 06:39:05,735 INFO L124 PetriNetUnfolderBase]: 2408/10158 cut-off events. [2023-08-24 06:39:05,736 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-24 06:39:05,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12535 conditions, 10158 events. 2408/10158 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 93651 event pairs, 1291 based on Foata normal form. 0/9020 useless extension candidates. Maximal degree in co-relation 6292. Up to 2304 conditions per place. [2023-08-24 06:39:05,896 INFO L82 GeneralOperation]: Start removeDead. Operand has 372 places, 421 transitions, 986 flow [2023-08-24 06:39:05,970 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 372 places, 421 transitions, 986 flow [2023-08-24 06:39:05,971 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:39:05,971 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 372 places, 421 transitions, 986 flow [2023-08-24 06:39:05,971 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 372 places, 421 transitions, 986 flow [2023-08-24 06:39:05,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 372 places, 421 transitions, 986 flow [2023-08-24 06:39:07,856 INFO L124 PetriNetUnfolderBase]: 2408/10158 cut-off events. [2023-08-24 06:39:07,857 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-24 06:39:08,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12535 conditions, 10158 events. 2408/10158 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 93651 event pairs, 1291 based on Foata normal form. 0/9020 useless extension candidates. Maximal degree in co-relation 6292. Up to 2304 conditions per place. [2023-08-24 06:39:08,461 INFO L119 LiptonReduction]: Number of co-enabled transitions 126000 [2023-08-24 06:39:13,104 INFO L134 LiptonReduction]: Checked pairs total: 289308 [2023-08-24 06:39:13,104 INFO L136 LiptonReduction]: Total number of compositions: 284 [2023-08-24 06:39:13,105 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:39:13,106 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;@5915069d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:39:13,106 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:39:13,155 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:39:13,155 INFO L124 PetriNetUnfolderBase]: 150/548 cut-off events. [2023-08-24 06:39:13,155 INFO L125 PetriNetUnfolderBase]: For 309/309 co-relation queries the response was YES. [2023-08-24 06:39:13,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:39:13,155 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:39:13,156 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:39:13,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:39:13,156 INFO L85 PathProgramCache]: Analyzing trace with hash -568282057, now seen corresponding path program 1 times [2023-08-24 06:39:13,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:39:13,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337177854] [2023-08-24 06:39:13,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:39:13,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:39:13,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:39:13,178 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:39:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:39:13,200 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:39:13,200 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:39:13,200 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:39:13,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 06:39:13,200 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:39:13,201 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:39:13,201 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:39:13,201 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-24 06:39:13,239 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-24 06:39:13,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 404 places, 458 transitions, 1086 flow [2023-08-24 06:39:17,511 INFO L124 PetriNetUnfolderBase]: 5235/20211 cut-off events. [2023-08-24 06:39:17,512 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-24 06:39:17,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25417 conditions, 20211 events. 5235/20211 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 210524 event pairs, 3084 based on Foata normal form. 0/18037 useless extension candidates. Maximal degree in co-relation 12515. Up to 5120 conditions per place. [2023-08-24 06:39:17,892 INFO L82 GeneralOperation]: Start removeDead. Operand has 404 places, 458 transitions, 1086 flow [2023-08-24 06:39:18,235 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 404 places, 458 transitions, 1086 flow [2023-08-24 06:39:18,235 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:39:18,236 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 404 places, 458 transitions, 1086 flow [2023-08-24 06:39:18,236 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 404 places, 458 transitions, 1086 flow [2023-08-24 06:39:18,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 404 places, 458 transitions, 1086 flow [2023-08-24 06:39:22,611 INFO L124 PetriNetUnfolderBase]: 5235/20211 cut-off events. [2023-08-24 06:39:22,612 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-24 06:39:22,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25417 conditions, 20211 events. 5235/20211 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 210524 event pairs, 3084 based on Foata normal form. 0/18037 useless extension candidates. Maximal degree in co-relation 12515. Up to 5120 conditions per place. [2023-08-24 06:39:23,854 INFO L119 LiptonReduction]: Number of co-enabled transitions 153300 [2023-08-24 06:39:28,731 INFO L134 LiptonReduction]: Checked pairs total: 398119 [2023-08-24 06:39:28,731 INFO L136 LiptonReduction]: Total number of compositions: 309 [2023-08-24 06:39:28,732 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:39:28,733 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;@5915069d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:39:28,733 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:39:28,793 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:39:28,793 INFO L124 PetriNetUnfolderBase]: 234/772 cut-off events. [2023-08-24 06:39:28,794 INFO L125 PetriNetUnfolderBase]: For 469/469 co-relation queries the response was YES. [2023-08-24 06:39:28,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:39:28,794 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:39:28,794 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:39:28,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:39:28,794 INFO L85 PathProgramCache]: Analyzing trace with hash -631342126, now seen corresponding path program 1 times [2023-08-24 06:39:28,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:39:28,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819846763] [2023-08-24 06:39:28,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:39:28,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:39:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:39:28,817 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:39:28,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:39:28,838 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:39:28,839 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:39:28,839 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:39:28,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 06:39:28,839 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:39:28,839 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:39:28,840 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:39:28,840 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-24 06:39:28,882 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-24 06:39:28,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 436 places, 495 transitions, 1188 flow [2023-08-24 06:39:38,615 INFO L124 PetriNetUnfolderBase]: 11390/40760 cut-off events. [2023-08-24 06:39:38,615 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-24 06:39:39,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52124 conditions, 40760 events. 11390/40760 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 477349 event pairs, 7181 based on Foata normal form. 0/36526 useless extension candidates. Maximal degree in co-relation 25395. Up to 11264 conditions per place. [2023-08-24 06:39:39,775 INFO L82 GeneralOperation]: Start removeDead. Operand has 436 places, 495 transitions, 1188 flow [2023-08-24 06:39:40,301 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 436 places, 495 transitions, 1188 flow [2023-08-24 06:39:40,301 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:39:40,301 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 436 places, 495 transitions, 1188 flow [2023-08-24 06:39:40,302 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 436 places, 495 transitions, 1188 flow [2023-08-24 06:39:40,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 436 places, 495 transitions, 1188 flow [2023-08-24 06:39:50,113 INFO L124 PetriNetUnfolderBase]: 11390/40760 cut-off events. [2023-08-24 06:39:50,113 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-24 06:39:51,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52124 conditions, 40760 events. 11390/40760 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 477349 event pairs, 7181 based on Foata normal form. 0/36526 useless extension candidates. Maximal degree in co-relation 25395. Up to 11264 conditions per place. [2023-08-24 06:39:53,483 INFO L119 LiptonReduction]: Number of co-enabled transitions 183260 [2023-08-24 06:39:58,848 INFO L134 LiptonReduction]: Checked pairs total: 472086 [2023-08-24 06:39:58,848 INFO L136 LiptonReduction]: Total number of compositions: 330 [2023-08-24 06:39:58,849 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:39:58,850 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;@5915069d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:39:58,850 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:39:58,938 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:39:58,938 INFO L124 PetriNetUnfolderBase]: 349/1091 cut-off events. [2023-08-24 06:39:58,938 INFO L125 PetriNetUnfolderBase]: For 713/713 co-relation queries the response was YES. [2023-08-24 06:39:58,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:39:58,939 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:39:58,939 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:39:58,939 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:39:58,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1053271914, now seen corresponding path program 1 times [2023-08-24 06:39:58,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:39:58,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885125587] [2023-08-24 06:39:58,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:39:58,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:39:58,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:39:58,961 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:39:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:39:58,980 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:39:58,980 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:39:58,981 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:39:58,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-24 06:39:58,981 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:39:58,981 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:39:58,981 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:39:58,982 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-24 06:39:59,022 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-24 06:39:59,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 468 places, 532 transitions, 1292 flow [2023-08-24 06:40:21,069 INFO L124 PetriNetUnfolderBase]: 24713/82813 cut-off events. [2023-08-24 06:40:21,069 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-24 06:40:26,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107504 conditions, 82813 events. 24713/82813 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1326. Compared 1059431 event pairs, 16398 based on Foata normal form. 0/74471 useless extension candidates. Maximal degree in co-relation 52100. Up to 24576 conditions per place. [2023-08-24 06:40:26,022 INFO L82 GeneralOperation]: Start removeDead. Operand has 468 places, 532 transitions, 1292 flow [2023-08-24 06:40:27,493 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 468 places, 532 transitions, 1292 flow [2023-08-24 06:40:27,493 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:40:27,493 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 468 places, 532 transitions, 1292 flow [2023-08-24 06:40:27,494 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 468 places, 532 transitions, 1292 flow [2023-08-24 06:40:27,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 468 places, 532 transitions, 1292 flow [2023-08-24 06:40:50,738 INFO L124 PetriNetUnfolderBase]: 24713/82813 cut-off events. [2023-08-24 06:40:50,738 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-24 06:40:55,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107504 conditions, 82813 events. 24713/82813 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1326. Compared 1059431 event pairs, 16398 based on Foata normal form. 0/74471 useless extension candidates. Maximal degree in co-relation 52100. Up to 24576 conditions per place. [2023-08-24 06:41:02,153 INFO L119 LiptonReduction]: Number of co-enabled transitions 215880 [2023-08-24 06:41:07,226 INFO L134 LiptonReduction]: Checked pairs total: 516108 [2023-08-24 06:41:07,227 INFO L136 LiptonReduction]: Total number of compositions: 354 [2023-08-24 06:41:07,228 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:41:07,228 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;@5915069d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:41:07,228 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:41:07,362 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:41:07,362 INFO L124 PetriNetUnfolderBase]: 560/1604 cut-off events. [2023-08-24 06:41:07,362 INFO L125 PetriNetUnfolderBase]: For 1089/1089 co-relation queries the response was YES. [2023-08-24 06:41:07,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:41:07,363 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:41:07,363 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:41:07,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:41:07,363 INFO L85 PathProgramCache]: Analyzing trace with hash 755818463, now seen corresponding path program 1 times [2023-08-24 06:41:07,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:41:07,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873389933] [2023-08-24 06:41:07,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:41:07,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:41:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:41:07,386 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:41:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:41:07,411 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:41:07,412 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:41:07,412 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:41:07,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-24 06:41:07,412 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:41:07,414 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:41:07,414 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:41:07,414 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-24 06:41:07,456 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-24 06:41:07,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 500 places, 569 transitions, 1398 flow [2023-08-24 06:42:00,562 INFO L124 PetriNetUnfolderBase]: 53396/168898 cut-off events. [2023-08-24 06:42:00,563 INFO L125 PetriNetUnfolderBase]: For 53690/53690 co-relation queries the response was YES. [2023-08-24 06:42:13,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222277 conditions, 168898 events. 53396/168898 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2609. Compared 2336303 event pairs, 36879 based on Foata normal form. 0/152352 useless extension candidates. Maximal degree in co-relation 107478. Up to 53248 conditions per place. [2023-08-24 06:42:13,219 INFO L82 GeneralOperation]: Start removeDead. Operand has 500 places, 569 transitions, 1398 flow [2023-08-24 06:42:17,184 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 500 places, 569 transitions, 1398 flow [2023-08-24 06:42:17,185 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:42:17,185 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 500 places, 569 transitions, 1398 flow [2023-08-24 06:42:17,185 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 500 places, 569 transitions, 1398 flow [2023-08-24 06:42:17,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 500 places, 569 transitions, 1398 flow [2023-08-24 06:43:08,891 INFO L124 PetriNetUnfolderBase]: 53396/168898 cut-off events. [2023-08-24 06:43:08,891 INFO L125 PetriNetUnfolderBase]: For 53690/53690 co-relation queries the response was YES. [2023-08-24 06:43:20,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222277 conditions, 168898 events. 53396/168898 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2609. Compared 2336303 event pairs, 36879 based on Foata normal form. 0/152352 useless extension candidates. Maximal degree in co-relation 107478. Up to 53248 conditions per place. [2023-08-24 06:43:40,567 INFO L119 LiptonReduction]: Number of co-enabled transitions 251160 [2023-08-24 06:43:45,917 INFO L134 LiptonReduction]: Checked pairs total: 590914 [2023-08-24 06:43:45,917 INFO L136 LiptonReduction]: Total number of compositions: 375 [2023-08-24 06:43:45,918 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:43:45,919 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;@5915069d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:43:45,919 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:43:46,118 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:43:46,118 INFO L124 PetriNetUnfolderBase]: 913/2408 cut-off events. [2023-08-24 06:43:46,118 INFO L125 PetriNetUnfolderBase]: For 1672/1672 co-relation queries the response was YES. [2023-08-24 06:43:46,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:43:46,119 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:43:46,119 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:43:46,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:43:46,119 INFO L85 PathProgramCache]: Analyzing trace with hash -434537672, now seen corresponding path program 1 times [2023-08-24 06:43:46,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:43:46,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185295198] [2023-08-24 06:43:46,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:43:46,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:43:46,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:43:46,166 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:43:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:43:46,190 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:43:46,190 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:43:46,191 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:43:46,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-24 06:43:46,191 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:43:46,191 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:43:46,192 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:43:46,192 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-08-24 06:43:46,240 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-08-24 06:43:46,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 532 places, 606 transitions, 1506 flow