/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_07-cond_racing2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 06:24:14,529 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 06:24:14,583 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 06:24:14,588 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 06:24:14,588 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 06:24:14,618 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 06:24:14,619 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 06:24:14,619 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 06:24:14,620 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 06:24:14,622 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 06:24:14,622 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 06:24:14,623 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 06:24:14,623 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 06:24:14,624 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 06:24:14,624 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 06:24:14,624 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 06:24:14,624 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 06:24:14,624 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 06:24:14,624 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 06:24:14,625 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 06:24:14,625 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 06:24:14,625 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 06:24:14,625 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 06:24:14,626 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 06:24:14,626 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 06:24:14,626 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 06:24:14,626 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 06:24:14,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 06:24:14,626 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 06:24:14,627 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 06:24:14,627 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 06:24:14,627 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 06:24:14,628 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 06:24:14,628 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 06:24:14,628 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 06:24:14,628 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 06:24:14,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 06:24:14,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 06:24:14,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 06:24:14,884 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 06:24:14,884 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 06:24:14,885 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i [2023-08-24 06:24:15,763 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 06:24:16,047 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 06:24:16,048 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i [2023-08-24 06:24:16,064 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61b5c44a9/e47913f383f44f85a38ec7e6907e514e/FLAG583c34f75 [2023-08-24 06:24:16,076 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61b5c44a9/e47913f383f44f85a38ec7e6907e514e [2023-08-24 06:24:16,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 06:24:16,082 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 06:24:16,085 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 06:24:16,085 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 06:24:16,087 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 06:24:16,088 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:24:16" (1/1) ... [2023-08-24 06:24:16,089 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57f212f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:24:16, skipping insertion in model container [2023-08-24 06:24:16,089 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:24:16" (1/1) ... [2023-08-24 06:24:16,135 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 06:24:16,454 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_07-cond_racing2.i[41322,41335] [2023-08-24 06:24:16,469 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 06:24:16,478 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 06:24:16,487 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [119] [2023-08-24 06:24:16,494 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [481] [2023-08-24 06:24:16,495 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [481] [2023-08-24 06:24:16,500 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_07-cond_racing2.i[41322,41335] [2023-08-24 06:24:16,504 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 06:24:16,544 INFO L206 MainTranslator]: Completed translation [2023-08-24 06:24:16,544 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:24:16 WrapperNode [2023-08-24 06:24:16,545 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 06:24:16,545 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 06:24:16,546 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 06:24:16,546 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 06:24:16,551 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:24:16" (1/1) ... [2023-08-24 06:24:16,563 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:24:16" (1/1) ... [2023-08-24 06:24:16,579 INFO L138 Inliner]: procedures = 270, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 92 [2023-08-24 06:24:16,580 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 06:24:16,580 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 06:24:16,580 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 06:24:16,581 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 06:24:16,586 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:24:16" (1/1) ... [2023-08-24 06:24:16,587 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:24:16" (1/1) ... [2023-08-24 06:24:16,591 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:24:16" (1/1) ... [2023-08-24 06:24:16,592 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:24:16" (1/1) ... [2023-08-24 06:24:16,596 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:24:16" (1/1) ... [2023-08-24 06:24:16,599 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:24:16" (1/1) ... [2023-08-24 06:24:16,600 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:24:16" (1/1) ... [2023-08-24 06:24:16,601 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:24:16" (1/1) ... [2023-08-24 06:24:16,602 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 06:24:16,603 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 06:24:16,603 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 06:24:16,603 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 06:24:16,603 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:24:16" (1/1) ... [2023-08-24 06:24:16,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 06:24:16,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 06:24:16,671 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 06:24:16,693 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 06:24:16,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 06:24:16,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 06:24:16,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 06:24:16,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 06:24:16,701 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 06:24:16,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 06:24:16,701 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-24 06:24:16,701 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-24 06:24:16,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 06:24:16,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 06:24:16,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 06:24:16,702 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 06:24:16,784 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 06:24:16,785 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 06:24:16,944 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 06:24:16,948 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 06:24:16,949 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-24 06:24:16,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:24:16 BoogieIcfgContainer [2023-08-24 06:24:16,950 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 06:24:16,951 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 06:24:16,951 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 06:24:16,953 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 06:24:16,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 06:24:16" (1/3) ... [2023-08-24 06:24:16,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd3b6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:24:16, skipping insertion in model container [2023-08-24 06:24:16,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:24:16" (2/3) ... [2023-08-24 06:24:16,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd3b6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:24:16, skipping insertion in model container [2023-08-24 06:24:16,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:24:16" (3/3) ... [2023-08-24 06:24:16,955 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_07-cond_racing2.i [2023-08-24 06:24:16,965 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 06:24:16,965 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 06:24:16,965 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 06:24:17,026 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-24 06:24:17,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 123 transitions, 254 flow [2023-08-24 06:24:17,115 INFO L124 PetriNetUnfolderBase]: 23/167 cut-off events. [2023-08-24 06:24:17,115 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-24 06:24:17,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 167 events. 23/167 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 370 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 83. Up to 6 conditions per place. [2023-08-24 06:24:17,119 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 123 transitions, 254 flow [2023-08-24 06:24:17,123 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 118 transitions, 241 flow [2023-08-24 06:24:17,125 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:24:17,134 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 118 transitions, 241 flow [2023-08-24 06:24:17,136 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 118 transitions, 241 flow [2023-08-24 06:24:17,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 118 transitions, 241 flow [2023-08-24 06:24:17,170 INFO L124 PetriNetUnfolderBase]: 22/162 cut-off events. [2023-08-24 06:24:17,170 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 06:24:17,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 162 events. 22/162 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 358 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 83. Up to 6 conditions per place. [2023-08-24 06:24:17,173 INFO L119 LiptonReduction]: Number of co-enabled transitions 2800 [2023-08-24 06:24:19,829 INFO L134 LiptonReduction]: Checked pairs total: 4793 [2023-08-24 06:24:19,830 INFO L136 LiptonReduction]: Total number of compositions: 106 [2023-08-24 06:24:19,838 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:24:19,856 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;@5a37ae92, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:24:19,856 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:24:19,859 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:24:19,859 INFO L124 PetriNetUnfolderBase]: 4/25 cut-off events. [2023-08-24 06:24:19,859 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 06:24:19,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:24:19,859 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-24 06:24:19,860 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:24:19,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:24:19,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1158520267, now seen corresponding path program 1 times [2023-08-24 06:24:19,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:24:19,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77576217] [2023-08-24 06:24:19,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:24:19,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:24:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:24:19,945 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:24:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:24:19,973 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:24:19,974 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:24:19,975 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:24:19,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 06:24:19,976 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:24:19,978 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:24:19,978 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:24:19,978 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-24 06:24:19,992 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-24 06:24:19,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 153 transitions, 324 flow [2023-08-24 06:24:20,022 INFO L124 PetriNetUnfolderBase]: 40/266 cut-off events. [2023-08-24 06:24:20,022 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-24 06:24:20,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 266 events. 40/266 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 739 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 169. Up to 9 conditions per place. [2023-08-24 06:24:20,024 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 153 transitions, 324 flow [2023-08-24 06:24:20,025 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 153 transitions, 324 flow [2023-08-24 06:24:20,025 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:24:20,025 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 153 transitions, 324 flow [2023-08-24 06:24:20,026 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 153 transitions, 324 flow [2023-08-24 06:24:20,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 153 transitions, 324 flow [2023-08-24 06:24:20,051 INFO L124 PetriNetUnfolderBase]: 40/266 cut-off events. [2023-08-24 06:24:20,052 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-24 06:24:20,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 266 events. 40/266 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 739 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 169. Up to 9 conditions per place. [2023-08-24 06:24:20,059 INFO L119 LiptonReduction]: Number of co-enabled transitions 7784 [2023-08-24 06:24:22,715 INFO L134 LiptonReduction]: Checked pairs total: 19733 [2023-08-24 06:24:22,715 INFO L136 LiptonReduction]: Total number of compositions: 117 [2023-08-24 06:24:22,717 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:24:22,717 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;@5a37ae92, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:24:22,717 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:24:22,721 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:24:22,721 INFO L124 PetriNetUnfolderBase]: 17/66 cut-off events. [2023-08-24 06:24:22,721 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 06:24:22,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:24:22,721 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-24 06:24:22,722 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:24:22,722 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:24:22,722 INFO L85 PathProgramCache]: Analyzing trace with hash 2047692335, now seen corresponding path program 1 times [2023-08-24 06:24:22,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:24:22,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495636379] [2023-08-24 06:24:22,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:24:22,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:24:22,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:24:22,742 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:24:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:24:22,770 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:24:22,770 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:24:22,770 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:24:22,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 06:24:22,770 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:24:22,771 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:24:22,771 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:24:22,771 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-24 06:24:22,791 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-24 06:24:22,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 183 transitions, 396 flow [2023-08-24 06:24:22,830 INFO L124 PetriNetUnfolderBase]: 62/398 cut-off events. [2023-08-24 06:24:22,830 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-24 06:24:22,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426 conditions, 398 events. 62/398 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1273 event pairs, 1 based on Foata normal form. 0/328 useless extension candidates. Maximal degree in co-relation 274. Up to 16 conditions per place. [2023-08-24 06:24:22,832 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 183 transitions, 396 flow [2023-08-24 06:24:22,835 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 183 transitions, 396 flow [2023-08-24 06:24:22,835 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:24:22,835 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 183 transitions, 396 flow [2023-08-24 06:24:22,836 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 183 transitions, 396 flow [2023-08-24 06:24:22,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 183 transitions, 396 flow [2023-08-24 06:24:22,869 INFO L124 PetriNetUnfolderBase]: 62/398 cut-off events. [2023-08-24 06:24:22,869 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-24 06:24:22,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426 conditions, 398 events. 62/398 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1273 event pairs, 1 based on Foata normal form. 0/328 useless extension candidates. Maximal degree in co-relation 274. Up to 16 conditions per place. [2023-08-24 06:24:22,879 INFO L119 LiptonReduction]: Number of co-enabled transitions 14280 [2023-08-24 06:24:25,323 INFO L134 LiptonReduction]: Checked pairs total: 34977 [2023-08-24 06:24:25,323 INFO L136 LiptonReduction]: Total number of compositions: 132 [2023-08-24 06:24:25,325 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:24:25,326 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;@5a37ae92, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:24:25,326 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:24:25,331 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:24:25,331 INFO L124 PetriNetUnfolderBase]: 26/103 cut-off events. [2023-08-24 06:24:25,331 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-24 06:24:25,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:24:25,332 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-24 06:24:25,332 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:24:25,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:24:25,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1599795601, now seen corresponding path program 1 times [2023-08-24 06:24:25,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:24:25,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749547729] [2023-08-24 06:24:25,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:24:25,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:24:25,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:24:25,353 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:24:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:24:25,378 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:24:25,378 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:24:25,378 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:24:25,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 06:24:25,378 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:24:25,379 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:24:25,379 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:24:25,379 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-24 06:24:25,399 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-24 06:24:25,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 213 transitions, 470 flow [2023-08-24 06:24:25,445 INFO L124 PetriNetUnfolderBase]: 96/598 cut-off events. [2023-08-24 06:24:25,449 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-24 06:24:25,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 653 conditions, 598 events. 96/598 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2202 event pairs, 6 based on Foata normal form. 0/497 useless extension candidates. Maximal degree in co-relation 418. Up to 32 conditions per place. [2023-08-24 06:24:25,452 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 213 transitions, 470 flow [2023-08-24 06:24:25,472 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 186 places, 213 transitions, 470 flow [2023-08-24 06:24:25,472 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:24:25,472 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 186 places, 213 transitions, 470 flow [2023-08-24 06:24:25,472 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 186 places, 213 transitions, 470 flow [2023-08-24 06:24:25,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 213 transitions, 470 flow [2023-08-24 06:24:25,515 INFO L124 PetriNetUnfolderBase]: 96/598 cut-off events. [2023-08-24 06:24:25,516 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-24 06:24:25,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 653 conditions, 598 events. 96/598 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2202 event pairs, 6 based on Foata normal form. 0/497 useless extension candidates. Maximal degree in co-relation 418. Up to 32 conditions per place. [2023-08-24 06:24:25,529 INFO L119 LiptonReduction]: Number of co-enabled transitions 22512 [2023-08-24 06:24:28,139 INFO L134 LiptonReduction]: Checked pairs total: 59098 [2023-08-24 06:24:28,140 INFO L136 LiptonReduction]: Total number of compositions: 150 [2023-08-24 06:24:28,141 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:24:28,142 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;@5a37ae92, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:24:28,143 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:24:28,152 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:24:28,152 INFO L124 PetriNetUnfolderBase]: 36/143 cut-off events. [2023-08-24 06:24:28,153 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-08-24 06:24:28,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:24:28,153 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-24 06:24:28,153 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:24:28,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:24:28,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1448520247, now seen corresponding path program 1 times [2023-08-24 06:24:28,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:24:28,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341473119] [2023-08-24 06:24:28,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:24:28,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:24:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:24:28,183 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:24:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:24:28,227 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:24:28,227 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:24:28,227 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:24:28,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 06:24:28,227 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:24:28,228 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:24:28,228 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:24:28,228 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-24 06:24:28,253 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-24 06:24:28,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 243 transitions, 546 flow [2023-08-24 06:24:28,342 INFO L124 PetriNetUnfolderBase]: 158/938 cut-off events. [2023-08-24 06:24:28,342 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-24 06:24:28,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1049 conditions, 938 events. 158/938 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 4103 event pairs, 23 based on Foata normal form. 0/790 useless extension candidates. Maximal degree in co-relation 643. Up to 80 conditions per place. [2023-08-24 06:24:28,352 INFO L82 GeneralOperation]: Start removeDead. Operand has 211 places, 243 transitions, 546 flow [2023-08-24 06:24:28,358 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 211 places, 243 transitions, 546 flow [2023-08-24 06:24:28,358 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:24:28,358 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 211 places, 243 transitions, 546 flow [2023-08-24 06:24:28,358 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 211 places, 243 transitions, 546 flow [2023-08-24 06:24:28,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 243 transitions, 546 flow [2023-08-24 06:24:28,437 INFO L124 PetriNetUnfolderBase]: 158/938 cut-off events. [2023-08-24 06:24:28,437 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-24 06:24:28,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1049 conditions, 938 events. 158/938 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 4103 event pairs, 23 based on Foata normal form. 0/790 useless extension candidates. Maximal degree in co-relation 643. Up to 80 conditions per place. [2023-08-24 06:24:28,460 INFO L119 LiptonReduction]: Number of co-enabled transitions 32480 [2023-08-24 06:24:31,000 INFO L134 LiptonReduction]: Checked pairs total: 89908 [2023-08-24 06:24:31,000 INFO L136 LiptonReduction]: Total number of compositions: 165 [2023-08-24 06:24:31,004 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:24:31,006 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;@5a37ae92, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:24:31,006 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:24:31,019 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:24:31,019 INFO L124 PetriNetUnfolderBase]: 47/186 cut-off events. [2023-08-24 06:24:31,019 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-24 06:24:31,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:24:31,019 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:24:31,022 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:24:31,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:24:31,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1192665678, now seen corresponding path program 1 times [2023-08-24 06:24:31,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:24:31,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579433149] [2023-08-24 06:24:31,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:24:31,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:24:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:24:31,053 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:24:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:24:31,093 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:24:31,093 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:24:31,093 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:24:31,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 06:24:31,094 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:24:31,094 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:24:31,094 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:24:31,094 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-24 06:24:31,113 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-24 06:24:31,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 273 transitions, 624 flow [2023-08-24 06:24:31,285 INFO L124 PetriNetUnfolderBase]: 284/1566 cut-off events. [2023-08-24 06:24:31,285 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-24 06:24:31,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1798 conditions, 1566 events. 284/1566 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 8477 event pairs, 72 based on Foata normal form. 0/1339 useless extension candidates. Maximal degree in co-relation 1037. Up to 192 conditions per place. [2023-08-24 06:24:31,306 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 273 transitions, 624 flow [2023-08-24 06:24:31,317 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 236 places, 273 transitions, 624 flow [2023-08-24 06:24:31,317 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:24:31,317 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 236 places, 273 transitions, 624 flow [2023-08-24 06:24:31,318 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 236 places, 273 transitions, 624 flow [2023-08-24 06:24:31,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 273 transitions, 624 flow [2023-08-24 06:24:31,497 INFO L124 PetriNetUnfolderBase]: 284/1566 cut-off events. [2023-08-24 06:24:31,498 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-24 06:24:31,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1798 conditions, 1566 events. 284/1566 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 8477 event pairs, 72 based on Foata normal form. 0/1339 useless extension candidates. Maximal degree in co-relation 1037. Up to 192 conditions per place. [2023-08-24 06:24:31,554 INFO L119 LiptonReduction]: Number of co-enabled transitions 44184 [2023-08-24 06:24:34,063 INFO L134 LiptonReduction]: Checked pairs total: 126921 [2023-08-24 06:24:34,063 INFO L136 LiptonReduction]: Total number of compositions: 177 [2023-08-24 06:24:34,066 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:24:34,067 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5a37ae92, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:24:34,070 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:24:34,085 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:24:34,086 INFO L124 PetriNetUnfolderBase]: 71/262 cut-off events. [2023-08-24 06:24:34,086 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2023-08-24 06:24:34,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:24:34,086 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:24:34,086 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:24:34,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:24:34,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1495848038, now seen corresponding path program 1 times [2023-08-24 06:24:34,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:24:34,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093093162] [2023-08-24 06:24:34,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:24:34,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:24:34,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:24:34,124 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:24:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:24:34,152 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:24:34,152 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:24:34,152 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:24:34,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 06:24:34,152 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:24:34,153 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:24:34,153 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:24:34,153 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-24 06:24:34,178 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-24 06:24:34,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 303 transitions, 704 flow [2023-08-24 06:24:34,563 INFO L124 PetriNetUnfolderBase]: 554/2786 cut-off events. [2023-08-24 06:24:34,563 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-24 06:24:34,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3284 conditions, 2786 events. 554/2786 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 18468 event pairs, 201 based on Foata normal form. 0/2416 useless extension candidates. Maximal degree in co-relation 1784. Up to 448 conditions per place. [2023-08-24 06:24:34,588 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 303 transitions, 704 flow [2023-08-24 06:24:34,603 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 261 places, 303 transitions, 704 flow [2023-08-24 06:24:34,603 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:24:34,603 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 261 places, 303 transitions, 704 flow [2023-08-24 06:24:34,603 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 261 places, 303 transitions, 704 flow [2023-08-24 06:24:34,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 303 transitions, 704 flow [2023-08-24 06:24:34,977 INFO L124 PetriNetUnfolderBase]: 554/2786 cut-off events. [2023-08-24 06:24:34,977 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-24 06:24:35,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3284 conditions, 2786 events. 554/2786 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 18468 event pairs, 201 based on Foata normal form. 0/2416 useless extension candidates. Maximal degree in co-relation 1784. Up to 448 conditions per place. [2023-08-24 06:24:35,083 INFO L119 LiptonReduction]: Number of co-enabled transitions 57624 [2023-08-24 06:24:37,755 INFO L134 LiptonReduction]: Checked pairs total: 168603 [2023-08-24 06:24:37,755 INFO L136 LiptonReduction]: Total number of compositions: 194 [2023-08-24 06:24:37,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:24:37,757 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;@5a37ae92, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:24:37,757 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:24:37,794 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:24:37,794 INFO L124 PetriNetUnfolderBase]: 91/341 cut-off events. [2023-08-24 06:24:37,794 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2023-08-24 06:24:37,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:24:37,795 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:24:37,795 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:24:37,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:24:37,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1364879085, now seen corresponding path program 1 times [2023-08-24 06:24:37,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:24:37,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445773515] [2023-08-24 06:24:37,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:24:37,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:24:37,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:24:37,839 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:24:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:24:37,858 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:24:37,858 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:24:37,859 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:24:37,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 06:24:37,859 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:24:37,859 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:24:37,859 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:24:37,859 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-24 06:24:37,880 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-24 06:24:37,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 286 places, 333 transitions, 786 flow [2023-08-24 06:24:38,641 INFO L124 PetriNetUnfolderBase]: 1144/5222 cut-off events. [2023-08-24 06:24:38,641 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-24 06:24:38,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6307 conditions, 5222 events. 1144/5222 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 41221 event pairs, 522 based on Foata normal form. 0/4581 useless extension candidates. Maximal degree in co-relation 3268. Up to 1024 conditions per place. [2023-08-24 06:24:38,701 INFO L82 GeneralOperation]: Start removeDead. Operand has 286 places, 333 transitions, 786 flow [2023-08-24 06:24:38,730 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 286 places, 333 transitions, 786 flow [2023-08-24 06:24:38,731 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:24:38,731 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 286 places, 333 transitions, 786 flow [2023-08-24 06:24:38,731 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 286 places, 333 transitions, 786 flow [2023-08-24 06:24:38,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 286 places, 333 transitions, 786 flow [2023-08-24 06:24:39,510 INFO L124 PetriNetUnfolderBase]: 1144/5222 cut-off events. [2023-08-24 06:24:39,510 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-24 06:24:39,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6307 conditions, 5222 events. 1144/5222 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 41221 event pairs, 522 based on Foata normal form. 0/4581 useless extension candidates. Maximal degree in co-relation 3268. Up to 1024 conditions per place. [2023-08-24 06:24:39,686 INFO L119 LiptonReduction]: Number of co-enabled transitions 72800 [2023-08-24 06:24:42,809 INFO L134 LiptonReduction]: Checked pairs total: 216693 [2023-08-24 06:24:42,809 INFO L136 LiptonReduction]: Total number of compositions: 207 [2023-08-24 06:24:42,810 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:24:42,811 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;@5a37ae92, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:24:42,811 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:24:42,837 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:24:42,837 INFO L124 PetriNetUnfolderBase]: 124/444 cut-off events. [2023-08-24 06:24:42,837 INFO L125 PetriNetUnfolderBase]: For 202/202 co-relation queries the response was YES. [2023-08-24 06:24:42,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:24:42,837 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:24:42,837 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:24:42,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:24:42,837 INFO L85 PathProgramCache]: Analyzing trace with hash -44088337, now seen corresponding path program 1 times [2023-08-24 06:24:42,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:24:42,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123484636] [2023-08-24 06:24:42,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:24:42,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:24:42,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:24:42,850 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:24:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:24:42,862 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:24:42,863 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:24:42,863 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:24:42,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 06:24:42,863 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:24:42,863 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:24:42,863 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:24:42,863 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-24 06:24:42,882 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-24 06:24:42,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 311 places, 363 transitions, 870 flow [2023-08-24 06:24:44,573 INFO L124 PetriNetUnfolderBase]: 2438/10154 cut-off events. [2023-08-24 06:24:44,573 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-24 06:24:44,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12531 conditions, 10154 events. 2438/10154 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 93414 event pairs, 1291 based on Foata normal form. 0/8986 useless extension candidates. Maximal degree in co-relation 6289. Up to 2304 conditions per place. [2023-08-24 06:24:44,691 INFO L82 GeneralOperation]: Start removeDead. Operand has 311 places, 363 transitions, 870 flow [2023-08-24 06:24:44,751 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 311 places, 363 transitions, 870 flow [2023-08-24 06:24:44,751 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:24:44,751 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 311 places, 363 transitions, 870 flow [2023-08-24 06:24:44,752 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 311 places, 363 transitions, 870 flow [2023-08-24 06:24:44,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 311 places, 363 transitions, 870 flow [2023-08-24 06:24:46,405 INFO L124 PetriNetUnfolderBase]: 2438/10154 cut-off events. [2023-08-24 06:24:46,405 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-24 06:24:46,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12531 conditions, 10154 events. 2438/10154 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 93414 event pairs, 1291 based on Foata normal form. 0/8986 useless extension candidates. Maximal degree in co-relation 6289. Up to 2304 conditions per place. [2023-08-24 06:24:46,802 INFO L119 LiptonReduction]: Number of co-enabled transitions 89712 [2023-08-24 06:24:49,984 INFO L134 LiptonReduction]: Checked pairs total: 301949 [2023-08-24 06:24:49,985 INFO L136 LiptonReduction]: Total number of compositions: 222 [2023-08-24 06:24:49,990 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:24:49,992 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;@5a37ae92, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:24:49,992 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:24:50,048 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:24:50,048 INFO L124 PetriNetUnfolderBase]: 171/589 cut-off events. [2023-08-24 06:24:50,048 INFO L125 PetriNetUnfolderBase]: For 309/309 co-relation queries the response was YES. [2023-08-24 06:24:50,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:24:50,048 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:24:50,048 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:24:50,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:24:50,049 INFO L85 PathProgramCache]: Analyzing trace with hash 618120709, now seen corresponding path program 1 times [2023-08-24 06:24:50,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:24:50,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279807381] [2023-08-24 06:24:50,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:24:50,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:24:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:24:50,071 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:24:50,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:24:50,095 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:24:50,095 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:24:50,095 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:24:50,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 06:24:50,096 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:24:50,099 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:24:50,102 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:24:50,102 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-24 06:24:50,125 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-24 06:24:50,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 336 places, 393 transitions, 956 flow [2023-08-24 06:24:54,039 INFO L124 PetriNetUnfolderBase]: 5268/20206 cut-off events. [2023-08-24 06:24:54,039 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-24 06:24:54,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25412 conditions, 20206 events. 5268/20206 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 211340 event pairs, 3084 based on Foata normal form. 0/17999 useless extension candidates. Maximal degree in co-relation 12511. Up to 5120 conditions per place. [2023-08-24 06:24:54,349 INFO L82 GeneralOperation]: Start removeDead. Operand has 336 places, 393 transitions, 956 flow [2023-08-24 06:24:54,505 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 336 places, 393 transitions, 956 flow [2023-08-24 06:24:54,505 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:24:54,505 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 336 places, 393 transitions, 956 flow [2023-08-24 06:24:54,505 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 336 places, 393 transitions, 956 flow [2023-08-24 06:24:54,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 336 places, 393 transitions, 956 flow [2023-08-24 06:24:58,306 INFO L124 PetriNetUnfolderBase]: 5268/20206 cut-off events. [2023-08-24 06:24:58,307 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-24 06:24:58,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25412 conditions, 20206 events. 5268/20206 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 211340 event pairs, 3084 based on Foata normal form. 0/17999 useless extension candidates. Maximal degree in co-relation 12511. Up to 5120 conditions per place. [2023-08-24 06:24:59,465 INFO L119 LiptonReduction]: Number of co-enabled transitions 108360 [2023-08-24 06:25:02,580 INFO L134 LiptonReduction]: Checked pairs total: 328101 [2023-08-24 06:25:02,580 INFO L136 LiptonReduction]: Total number of compositions: 239 [2023-08-24 06:25:02,582 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:25:02,583 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;@5a37ae92, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:25:02,583 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:25:02,702 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:25:02,702 INFO L124 PetriNetUnfolderBase]: 247/824 cut-off events. [2023-08-24 06:25:02,702 INFO L125 PetriNetUnfolderBase]: For 469/469 co-relation queries the response was YES. [2023-08-24 06:25:02,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:25:02,702 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:25:02,703 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:25:02,703 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:25:02,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1343143833, now seen corresponding path program 1 times [2023-08-24 06:25:02,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:25:02,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896935253] [2023-08-24 06:25:02,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:25:02,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:25:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:25:02,750 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:25:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:25:02,800 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:25:02,800 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:25:02,800 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:25:02,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 06:25:02,801 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:25:02,801 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:25:02,801 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:25:02,801 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-24 06:25:02,908 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-24 06:25:02,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 361 places, 423 transitions, 1044 flow [2023-08-24 06:25:11,564 INFO L124 PetriNetUnfolderBase]: 11426/40754 cut-off events. [2023-08-24 06:25:11,564 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-24 06:25:12,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52118 conditions, 40754 events. 11426/40754 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 474879 event pairs, 7181 based on Foata normal form. 0/36484 useless extension candidates. Maximal degree in co-relation 25390. Up to 11264 conditions per place. [2023-08-24 06:25:12,227 INFO L82 GeneralOperation]: Start removeDead. Operand has 361 places, 423 transitions, 1044 flow [2023-08-24 06:25:12,673 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 361 places, 423 transitions, 1044 flow [2023-08-24 06:25:12,673 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:25:12,673 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 361 places, 423 transitions, 1044 flow [2023-08-24 06:25:12,674 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 361 places, 423 transitions, 1044 flow [2023-08-24 06:25:12,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 361 places, 423 transitions, 1044 flow [2023-08-24 06:25:21,136 INFO L124 PetriNetUnfolderBase]: 11426/40754 cut-off events. [2023-08-24 06:25:21,137 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-24 06:25:21,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52118 conditions, 40754 events. 11426/40754 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 474879 event pairs, 7181 based on Foata normal form. 0/36484 useless extension candidates. Maximal degree in co-relation 25390. Up to 11264 conditions per place. [2023-08-24 06:25:23,727 INFO L119 LiptonReduction]: Number of co-enabled transitions 128744 [2023-08-24 06:25:26,777 INFO L134 LiptonReduction]: Checked pairs total: 395000 [2023-08-24 06:25:26,777 INFO L136 LiptonReduction]: Total number of compositions: 254 [2023-08-24 06:25:26,778 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:25:26,779 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;@5a37ae92, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:25:26,779 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:25:26,867 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:25:26,867 INFO L124 PetriNetUnfolderBase]: 374/1143 cut-off events. [2023-08-24 06:25:26,867 INFO L125 PetriNetUnfolderBase]: For 713/713 co-relation queries the response was YES. [2023-08-24 06:25:26,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:25:26,868 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:25:26,868 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:25:26,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:25:26,868 INFO L85 PathProgramCache]: Analyzing trace with hash 239609603, now seen corresponding path program 1 times [2023-08-24 06:25:26,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:25:26,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607625186] [2023-08-24 06:25:26,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:25:26,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:25:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:25:26,887 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:25:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:25:26,903 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:25:26,903 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:25:26,903 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:25:26,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-24 06:25:26,903 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:25:26,904 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:25:26,904 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:25:26,904 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-24 06:25:26,926 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-24 06:25:26,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 386 places, 453 transitions, 1134 flow [2023-08-24 06:25:44,702 INFO L124 PetriNetUnfolderBase]: 24752/82806 cut-off events. [2023-08-24 06:25:44,703 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-24 06:25:48,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107497 conditions, 82806 events. 24752/82806 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1417. Compared 1058016 event pairs, 16398 based on Foata normal form. 0/74425 useless extension candidates. Maximal degree in co-relation 52094. Up to 24576 conditions per place. [2023-08-24 06:25:48,779 INFO L82 GeneralOperation]: Start removeDead. Operand has 386 places, 453 transitions, 1134 flow [2023-08-24 06:25:50,381 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 386 places, 453 transitions, 1134 flow [2023-08-24 06:25:50,381 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:25:50,382 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 386 places, 453 transitions, 1134 flow [2023-08-24 06:25:50,382 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 386 places, 453 transitions, 1134 flow [2023-08-24 06:25:50,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 386 places, 453 transitions, 1134 flow [2023-08-24 06:26:09,874 INFO L124 PetriNetUnfolderBase]: 24752/82806 cut-off events. [2023-08-24 06:26:09,875 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-24 06:26:12,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107497 conditions, 82806 events. 24752/82806 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1417. Compared 1058016 event pairs, 16398 based on Foata normal form. 0/74425 useless extension candidates. Maximal degree in co-relation 52094. Up to 24576 conditions per place. [2023-08-24 06:26:18,100 INFO L119 LiptonReduction]: Number of co-enabled transitions 150864 [2023-08-24 06:26:21,336 INFO L134 LiptonReduction]: Checked pairs total: 513999 [2023-08-24 06:26:21,336 INFO L136 LiptonReduction]: Total number of compositions: 269 [2023-08-24 06:26:21,337 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:26:21,338 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;@5a37ae92, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:26:21,338 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:26:21,468 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:26:21,469 INFO L124 PetriNetUnfolderBase]: 587/1683 cut-off events. [2023-08-24 06:26:21,469 INFO L125 PetriNetUnfolderBase]: For 1089/1089 co-relation queries the response was YES. [2023-08-24 06:26:21,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:26:21,469 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 06:26:21,469 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:26:21,470 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:26:21,470 INFO L85 PathProgramCache]: Analyzing trace with hash -122558763, now seen corresponding path program 1 times [2023-08-24 06:26:21,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:26:21,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630696346] [2023-08-24 06:26:21,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:26:21,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:26:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:26:21,519 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:26:21,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:26:21,557 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:26:21,557 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:26:21,557 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:26:21,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-24 06:26:21,557 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:26:21,559 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:26:21,559 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:26:21,559 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-24 06:26:21,614 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-24 06:26:21,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 411 places, 483 transitions, 1226 flow [2023-08-24 06:27:02,030 INFO L124 PetriNetUnfolderBase]: 53438/168890 cut-off events. [2023-08-24 06:27:02,030 INFO L125 PetriNetUnfolderBase]: For 53690/53690 co-relation queries the response was YES. [2023-08-24 06:27:10,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222269 conditions, 168890 events. 53438/168890 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2806. Compared 2362049 event pairs, 36879 based on Foata normal form. 0/152302 useless extension candidates. Maximal degree in co-relation 107471. Up to 53248 conditions per place. [2023-08-24 06:27:10,669 INFO L82 GeneralOperation]: Start removeDead. Operand has 411 places, 483 transitions, 1226 flow [2023-08-24 06:27:13,790 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 411 places, 483 transitions, 1226 flow [2023-08-24 06:27:13,791 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:27:13,791 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 411 places, 483 transitions, 1226 flow [2023-08-24 06:27:13,791 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 411 places, 483 transitions, 1226 flow [2023-08-24 06:27:13,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 411 places, 483 transitions, 1226 flow [2023-08-24 06:27:58,098 INFO L124 PetriNetUnfolderBase]: 53438/168890 cut-off events. [2023-08-24 06:27:58,098 INFO L125 PetriNetUnfolderBase]: For 53690/53690 co-relation queries the response was YES. [2023-08-24 06:28:06,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222269 conditions, 168890 events. 53438/168890 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2806. Compared 2362049 event pairs, 36879 based on Foata normal form. 0/152302 useless extension candidates. Maximal degree in co-relation 107471. Up to 53248 conditions per place. [2023-08-24 06:28:19,605 INFO L119 LiptonReduction]: Number of co-enabled transitions 174720 [2023-08-24 06:28:22,569 INFO L134 LiptonReduction]: Checked pairs total: 542754 [2023-08-24 06:28:22,569 INFO L136 LiptonReduction]: Total number of compositions: 282 [2023-08-24 06:28:22,589 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:28:22,591 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;@5a37ae92, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:28:22,592 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:28:22,859 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:28:22,859 INFO L124 PetriNetUnfolderBase]: 942/2532 cut-off events. [2023-08-24 06:28:22,872 INFO L125 PetriNetUnfolderBase]: For 1672/1672 co-relation queries the response was YES. [2023-08-24 06:28:22,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:28:22,872 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 06:28:22,873 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:28:22,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:28:22,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1396147202, now seen corresponding path program 1 times [2023-08-24 06:28:22,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:28:22,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116067312] [2023-08-24 06:28:22,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:28:22,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:28:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:28:22,907 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:28:22,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:28:22,958 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:28:22,958 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:28:22,958 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:28:22,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-24 06:28:22,959 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:28:22,960 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:28:22,960 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:28:22,960 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-08-24 06:28:22,987 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-08-24 06:28:22,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 436 places, 513 transitions, 1320 flow