/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_19-callback_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 05:08:24,843 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 05:08:24,912 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 05:08:24,921 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 05:08:24,922 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 05:08:24,955 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 05:08:24,956 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 05:08:24,956 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 05:08:24,957 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 05:08:24,960 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 05:08:24,961 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 05:08:24,961 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 05:08:24,961 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 05:08:24,962 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 05:08:24,962 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 05:08:24,962 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 05:08:24,963 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 05:08:24,963 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 05:08:24,963 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 05:08:24,963 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 05:08:24,964 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 05:08:24,964 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 05:08:24,964 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 05:08:24,965 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 05:08:24,965 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 05:08:24,965 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 05:08:24,965 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 05:08:24,965 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 05:08:24,966 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 05:08:24,966 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 05:08:24,967 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 05:08:24,967 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 05:08:24,967 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 05:08:24,967 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 05:08:24,967 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 05:08:24,968 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 05:08:25,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 05:08:25,311 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 05:08:25,313 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 05:08:25,314 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 05:08:25,314 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 05:08:25,315 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_19-callback_racing.i [2023-08-27 05:08:26,535 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 05:08:26,839 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 05:08:26,840 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_19-callback_racing.i [2023-08-27 05:08:26,869 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8ccbe1bb/a2ac651f7e8340308555984e0f9e502c/FLAG753fceb5c [2023-08-27 05:08:26,882 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8ccbe1bb/a2ac651f7e8340308555984e0f9e502c [2023-08-27 05:08:26,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 05:08:26,885 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 05:08:26,886 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 05:08:26,886 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 05:08:26,888 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 05:08:26,889 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:08:26" (1/1) ... [2023-08-27 05:08:26,890 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ebafe66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:08:26, skipping insertion in model container [2023-08-27 05:08:26,890 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:08:26" (1/1) ... [2023-08-27 05:08:26,939 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 05:08:27,215 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 05:08:27,236 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 05:08:27,251 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-27 05:08:27,253 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-27 05:08:27,269 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 05:08:27,301 WARN L669 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 05:08:27,306 INFO L206 MainTranslator]: Completed translation [2023-08-27 05:08:27,306 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:08:27 WrapperNode [2023-08-27 05:08:27,306 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 05:08:27,307 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 05:08:27,307 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 05:08:27,307 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 05:08:27,313 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:08:27" (1/1) ... [2023-08-27 05:08:27,326 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:08:27" (1/1) ... [2023-08-27 05:08:27,363 INFO L138 Inliner]: procedures = 173, calls = 40, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 150 [2023-08-27 05:08:27,363 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 05:08:27,364 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 05:08:27,364 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 05:08:27,364 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 05:08:27,375 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:08:27" (1/1) ... [2023-08-27 05:08:27,375 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:08:27" (1/1) ... [2023-08-27 05:08:27,391 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:08:27" (1/1) ... [2023-08-27 05:08:27,391 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:08:27" (1/1) ... [2023-08-27 05:08:27,396 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:08:27" (1/1) ... [2023-08-27 05:08:27,400 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:08:27" (1/1) ... [2023-08-27 05:08:27,401 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:08:27" (1/1) ... [2023-08-27 05:08:27,402 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:08:27" (1/1) ... [2023-08-27 05:08:27,420 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 05:08:27,421 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 05:08:27,421 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 05:08:27,422 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 05:08:27,422 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:08:27" (1/1) ... [2023-08-27 05:08:27,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 05:08:27,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 05:08:27,454 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 05:08:27,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 05:08:27,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 05:08:27,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 05:08:27,492 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 05:08:27,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 05:08:27,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 05:08:27,493 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-27 05:08:27,493 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-27 05:08:27,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 05:08:27,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 05:08:27,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 05:08:27,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 05:08:27,494 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 05:08:27,625 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 05:08:27,626 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 05:08:27,840 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 05:08:27,848 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 05:08:27,848 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-08-27 05:08:27,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:08:27 BoogieIcfgContainer [2023-08-27 05:08:27,850 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 05:08:27,851 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 05:08:27,851 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 05:08:27,854 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 05:08:27,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 05:08:26" (1/3) ... [2023-08-27 05:08:27,855 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ff0a87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:08:27, skipping insertion in model container [2023-08-27 05:08:27,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:08:27" (2/3) ... [2023-08-27 05:08:27,855 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ff0a87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:08:27, skipping insertion in model container [2023-08-27 05:08:27,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:08:27" (3/3) ... [2023-08-27 05:08:27,856 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_19-callback_racing.i [2023-08-27 05:08:27,870 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 05:08:27,870 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-27 05:08:27,870 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 05:08:27,923 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-27 05:08:27,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 162 transitions, 332 flow [2023-08-27 05:08:28,056 INFO L124 PetriNetUnfolderBase]: 27/247 cut-off events. [2023-08-27 05:08:28,056 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 05:08:28,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 247 events. 27/247 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 758 event pairs, 0 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 118. Up to 6 conditions per place. [2023-08-27 05:08:28,063 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 162 transitions, 332 flow [2023-08-27 05:08:28,069 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 153 transitions, 311 flow [2023-08-27 05:08:28,072 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:08:28,080 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 141 places, 153 transitions, 311 flow [2023-08-27 05:08:28,082 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 141 places, 153 transitions, 311 flow [2023-08-27 05:08:28,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 153 transitions, 311 flow [2023-08-27 05:08:28,121 INFO L124 PetriNetUnfolderBase]: 26/238 cut-off events. [2023-08-27 05:08:28,122 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 05:08:28,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 238 events. 26/238 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 677 event pairs, 0 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 118. Up to 6 conditions per place. [2023-08-27 05:08:28,126 INFO L119 LiptonReduction]: Number of co-enabled transitions 4560 [2023-08-27 05:08:31,689 INFO L134 LiptonReduction]: Checked pairs total: 6017 [2023-08-27 05:08:31,690 INFO L136 LiptonReduction]: Total number of compositions: 146 [2023-08-27 05:08:31,702 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:08:31,707 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;@1352f4fd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:08:31,708 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:08:31,713 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:08:31,713 INFO L124 PetriNetUnfolderBase]: 5/32 cut-off events. [2023-08-27 05:08:31,713 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 05:08:31,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:08:31,714 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-27 05:08:31,714 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:08:31,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:08:31,719 INFO L85 PathProgramCache]: Analyzing trace with hash 457666578, now seen corresponding path program 1 times [2023-08-27 05:08:31,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:08:31,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100190540] [2023-08-27 05:08:31,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:08:31,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:08:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:08:31,850 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:08:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:08:31,889 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:08:31,890 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:08:31,891 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:08:31,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 05:08:31,893 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:08:31,896 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:08:31,896 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:08:31,897 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-27 05:08:31,920 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 05:08:31,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 188 transitions, 394 flow [2023-08-27 05:08:31,974 INFO L124 PetriNetUnfolderBase]: 45/395 cut-off events. [2023-08-27 05:08:31,975 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 05:08:31,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 395 events. 45/395 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1518 event pairs, 0 based on Foata normal form. 0/316 useless extension candidates. Maximal degree in co-relation 249. Up to 9 conditions per place. [2023-08-27 05:08:31,980 INFO L82 GeneralOperation]: Start removeDead. Operand has 172 places, 188 transitions, 394 flow [2023-08-27 05:08:31,982 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 172 places, 188 transitions, 394 flow [2023-08-27 05:08:31,982 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:08:31,983 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 172 places, 188 transitions, 394 flow [2023-08-27 05:08:31,983 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 172 places, 188 transitions, 394 flow [2023-08-27 05:08:31,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 188 transitions, 394 flow [2023-08-27 05:08:32,029 INFO L124 PetriNetUnfolderBase]: 45/395 cut-off events. [2023-08-27 05:08:32,029 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 05:08:32,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 395 events. 45/395 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1518 event pairs, 0 based on Foata normal form. 0/316 useless extension candidates. Maximal degree in co-relation 249. Up to 9 conditions per place. [2023-08-27 05:08:32,042 INFO L119 LiptonReduction]: Number of co-enabled transitions 11184 [2023-08-27 05:08:35,412 INFO L134 LiptonReduction]: Checked pairs total: 17116 [2023-08-27 05:08:35,412 INFO L136 LiptonReduction]: Total number of compositions: 177 [2023-08-27 05:08:35,414 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:08:35,415 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;@1352f4fd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:08:35,415 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:08:35,421 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:08:35,421 INFO L124 PetriNetUnfolderBase]: 19/84 cut-off events. [2023-08-27 05:08:35,422 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 05:08:35,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:08:35,422 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-27 05:08:35,422 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:08:35,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:08:35,423 INFO L85 PathProgramCache]: Analyzing trace with hash -136691865, now seen corresponding path program 1 times [2023-08-27 05:08:35,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:08:35,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94945570] [2023-08-27 05:08:35,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:08:35,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:08:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:08:35,449 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:08:35,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:08:35,475 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:08:35,475 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:08:35,476 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:08:35,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 05:08:35,476 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:08:35,477 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:08:35,477 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:08:35,477 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-27 05:08:35,494 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 05:08:35,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 214 transitions, 458 flow [2023-08-27 05:08:35,552 INFO L124 PetriNetUnfolderBase]: 68/584 cut-off events. [2023-08-27 05:08:35,552 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 05:08:35,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612 conditions, 584 events. 68/584 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2475 event pairs, 1 based on Foata normal form. 0/465 useless extension candidates. Maximal degree in co-relation 403. Up to 16 conditions per place. [2023-08-27 05:08:35,558 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 214 transitions, 458 flow [2023-08-27 05:08:35,561 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 214 transitions, 458 flow [2023-08-27 05:08:35,561 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:08:35,561 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 195 places, 214 transitions, 458 flow [2023-08-27 05:08:35,561 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 195 places, 214 transitions, 458 flow [2023-08-27 05:08:35,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 214 transitions, 458 flow [2023-08-27 05:08:35,640 INFO L124 PetriNetUnfolderBase]: 68/584 cut-off events. [2023-08-27 05:08:35,640 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 05:08:35,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612 conditions, 584 events. 68/584 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2475 event pairs, 1 based on Foata normal form. 0/465 useless extension candidates. Maximal degree in co-relation 403. Up to 16 conditions per place. [2023-08-27 05:08:35,661 INFO L119 LiptonReduction]: Number of co-enabled transitions 18720 [2023-08-27 05:08:39,217 INFO L134 LiptonReduction]: Checked pairs total: 30424 [2023-08-27 05:08:39,217 INFO L136 LiptonReduction]: Total number of compositions: 201 [2023-08-27 05:08:39,219 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:08:39,220 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;@1352f4fd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:08:39,220 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:08:39,231 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:08:39,232 INFO L124 PetriNetUnfolderBase]: 33/137 cut-off events. [2023-08-27 05:08:39,232 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-27 05:08:39,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:08:39,232 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-27 05:08:39,232 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:08:39,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:08:39,233 INFO L85 PathProgramCache]: Analyzing trace with hash 43910924, now seen corresponding path program 1 times [2023-08-27 05:08:39,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:08:39,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613248874] [2023-08-27 05:08:39,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:08:39,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:08:39,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:08:39,271 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:08:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:08:39,323 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:08:39,323 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:08:39,324 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:08:39,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 05:08:39,324 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:08:39,325 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:08:39,325 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:08:39,325 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-27 05:08:39,358 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-27 05:08:39,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 240 transitions, 524 flow [2023-08-27 05:08:39,467 INFO L124 PetriNetUnfolderBase]: 103/857 cut-off events. [2023-08-27 05:08:39,467 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-27 05:08:39,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 912 conditions, 857 events. 103/857 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3986 event pairs, 6 based on Foata normal form. 0/682 useless extension candidates. Maximal degree in co-relation 604. Up to 32 conditions per place. [2023-08-27 05:08:39,478 INFO L82 GeneralOperation]: Start removeDead. Operand has 218 places, 240 transitions, 524 flow [2023-08-27 05:08:39,484 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 218 places, 240 transitions, 524 flow [2023-08-27 05:08:39,484 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:08:39,484 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 218 places, 240 transitions, 524 flow [2023-08-27 05:08:39,484 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 218 places, 240 transitions, 524 flow [2023-08-27 05:08:39,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 240 transitions, 524 flow [2023-08-27 05:08:39,572 INFO L124 PetriNetUnfolderBase]: 103/857 cut-off events. [2023-08-27 05:08:39,572 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-27 05:08:39,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 912 conditions, 857 events. 103/857 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3986 event pairs, 6 based on Foata normal form. 0/682 useless extension candidates. Maximal degree in co-relation 604. Up to 32 conditions per place. [2023-08-27 05:08:39,600 INFO L119 LiptonReduction]: Number of co-enabled transitions 27552 [2023-08-27 05:08:43,014 INFO L134 LiptonReduction]: Checked pairs total: 45659 [2023-08-27 05:08:43,015 INFO L136 LiptonReduction]: Total number of compositions: 221 [2023-08-27 05:08:43,016 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:08:43,017 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;@1352f4fd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:08:43,017 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:08:43,029 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:08:43,030 INFO L124 PetriNetUnfolderBase]: 48/197 cut-off events. [2023-08-27 05:08:43,030 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-08-27 05:08:43,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:08:43,030 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-27 05:08:43,030 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:08:43,031 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:08:43,031 INFO L85 PathProgramCache]: Analyzing trace with hash -821581961, now seen corresponding path program 1 times [2023-08-27 05:08:43,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:08:43,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488233550] [2023-08-27 05:08:43,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:08:43,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:08:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:08:43,054 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:08:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:08:43,075 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:08:43,075 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:08:43,076 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:08:43,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 05:08:43,076 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:08:43,076 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:08:43,077 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:08:43,077 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-27 05:08:43,096 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-27 05:08:43,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 266 transitions, 592 flow [2023-08-27 05:08:43,255 INFO L124 PetriNetUnfolderBase]: 166/1302 cut-off events. [2023-08-27 05:08:43,255 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-27 05:08:43,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1413 conditions, 1302 events. 166/1302 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 6776 event pairs, 23 based on Foata normal form. 0/1039 useless extension candidates. Maximal degree in co-relation 902. Up to 80 conditions per place. [2023-08-27 05:08:43,268 INFO L82 GeneralOperation]: Start removeDead. Operand has 241 places, 266 transitions, 592 flow [2023-08-27 05:08:43,277 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 241 places, 266 transitions, 592 flow [2023-08-27 05:08:43,277 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:08:43,277 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 241 places, 266 transitions, 592 flow [2023-08-27 05:08:43,278 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 241 places, 266 transitions, 592 flow [2023-08-27 05:08:43,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 266 transitions, 592 flow [2023-08-27 05:08:43,451 INFO L124 PetriNetUnfolderBase]: 166/1302 cut-off events. [2023-08-27 05:08:43,452 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-27 05:08:43,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1413 conditions, 1302 events. 166/1302 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 6776 event pairs, 23 based on Foata normal form. 0/1039 useless extension candidates. Maximal degree in co-relation 902. Up to 80 conditions per place. [2023-08-27 05:08:43,488 INFO L119 LiptonReduction]: Number of co-enabled transitions 37680 [2023-08-27 05:08:47,267 INFO L134 LiptonReduction]: Checked pairs total: 67628 [2023-08-27 05:08:47,267 INFO L136 LiptonReduction]: Total number of compositions: 247 [2023-08-27 05:08:47,269 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:08:47,270 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;@1352f4fd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:08:47,270 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:08:47,285 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:08:47,285 INFO L124 PetriNetUnfolderBase]: 61/258 cut-off events. [2023-08-27 05:08:47,285 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-27 05:08:47,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:08:47,285 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:08:47,286 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:08:47,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:08:47,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1796648400, now seen corresponding path program 1 times [2023-08-27 05:08:47,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:08:47,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085350209] [2023-08-27 05:08:47,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:08:47,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:08:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:08:47,309 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:08:47,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:08:47,331 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:08:47,331 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:08:47,331 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:08:47,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 05:08:47,332 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:08:47,332 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:08:47,332 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:08:47,332 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-27 05:08:47,353 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-27 05:08:47,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 264 places, 292 transitions, 662 flow [2023-08-27 05:08:47,635 INFO L124 PetriNetUnfolderBase]: 293/2099 cut-off events. [2023-08-27 05:08:47,635 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-27 05:08:47,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2331 conditions, 2099 events. 293/2099 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 12735 event pairs, 72 based on Foata normal form. 0/1684 useless extension candidates. Maximal degree in co-relation 1401. Up to 192 conditions per place. [2023-08-27 05:08:47,662 INFO L82 GeneralOperation]: Start removeDead. Operand has 264 places, 292 transitions, 662 flow [2023-08-27 05:08:47,676 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 264 places, 292 transitions, 662 flow [2023-08-27 05:08:47,676 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:08:47,676 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 264 places, 292 transitions, 662 flow [2023-08-27 05:08:47,676 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 264 places, 292 transitions, 662 flow [2023-08-27 05:08:47,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 264 places, 292 transitions, 662 flow [2023-08-27 05:08:47,974 INFO L124 PetriNetUnfolderBase]: 293/2099 cut-off events. [2023-08-27 05:08:47,974 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-27 05:08:47,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2331 conditions, 2099 events. 293/2099 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 12735 event pairs, 72 based on Foata normal form. 0/1684 useless extension candidates. Maximal degree in co-relation 1401. Up to 192 conditions per place. [2023-08-27 05:08:48,047 INFO L119 LiptonReduction]: Number of co-enabled transitions 49104 [2023-08-27 05:08:52,063 INFO L134 LiptonReduction]: Checked pairs total: 89584 [2023-08-27 05:08:52,064 INFO L136 LiptonReduction]: Total number of compositions: 265 [2023-08-27 05:08:52,067 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:08:52,067 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;@1352f4fd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:08:52,067 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:08:52,088 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:08:52,089 INFO L124 PetriNetUnfolderBase]: 83/345 cut-off events. [2023-08-27 05:08:52,089 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2023-08-27 05:08:52,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:08:52,089 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:08:52,089 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:08:52,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:08:52,089 INFO L85 PathProgramCache]: Analyzing trace with hash 659161304, now seen corresponding path program 1 times [2023-08-27 05:08:52,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:08:52,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749172450] [2023-08-27 05:08:52,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:08:52,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:08:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:08:52,115 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:08:52,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:08:52,134 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:08:52,135 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:08:52,135 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:08:52,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 05:08:52,135 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:08:52,136 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:08:52,136 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:08:52,136 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-27 05:08:52,158 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-27 05:08:52,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 287 places, 318 transitions, 734 flow [2023-08-27 05:08:52,731 INFO L124 PetriNetUnfolderBase]: 564/3616 cut-off events. [2023-08-27 05:08:52,734 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-27 05:08:52,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4114 conditions, 3616 events. 564/3616 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 25964 event pairs, 201 based on Foata normal form. 0/2921 useless extension candidates. Maximal degree in co-relation 2317. Up to 448 conditions per place. [2023-08-27 05:08:52,770 INFO L82 GeneralOperation]: Start removeDead. Operand has 287 places, 318 transitions, 734 flow [2023-08-27 05:08:52,791 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 287 places, 318 transitions, 734 flow [2023-08-27 05:08:52,791 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:08:52,791 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 287 places, 318 transitions, 734 flow [2023-08-27 05:08:52,792 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 287 places, 318 transitions, 734 flow [2023-08-27 05:08:52,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 287 places, 318 transitions, 734 flow [2023-08-27 05:08:53,360 INFO L124 PetriNetUnfolderBase]: 564/3616 cut-off events. [2023-08-27 05:08:53,360 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-27 05:08:53,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4114 conditions, 3616 events. 564/3616 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 25964 event pairs, 201 based on Foata normal form. 0/2921 useless extension candidates. Maximal degree in co-relation 2317. Up to 448 conditions per place. [2023-08-27 05:08:53,490 INFO L119 LiptonReduction]: Number of co-enabled transitions 61824 [2023-08-27 05:08:57,477 INFO L134 LiptonReduction]: Checked pairs total: 121327 [2023-08-27 05:08:57,477 INFO L136 LiptonReduction]: Total number of compositions: 295 [2023-08-27 05:08:57,478 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:08:57,479 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;@1352f4fd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:08:57,479 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:08:57,503 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:08:57,504 INFO L124 PetriNetUnfolderBase]: 102/444 cut-off events. [2023-08-27 05:08:57,504 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2023-08-27 05:08:57,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:08:57,504 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:08:57,504 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:08:57,504 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:08:57,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1283397465, now seen corresponding path program 1 times [2023-08-27 05:08:57,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:08:57,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103472513] [2023-08-27 05:08:57,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:08:57,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:08:57,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:08:57,526 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:08:57,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:08:57,548 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:08:57,549 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:08:57,549 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:08:57,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 05:08:57,549 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:08:57,549 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:08:57,549 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:08:57,550 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-27 05:08:57,572 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-27 05:08:57,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 310 places, 344 transitions, 808 flow [2023-08-27 05:08:58,517 INFO L124 PetriNetUnfolderBase]: 1155/6605 cut-off events. [2023-08-27 05:08:58,518 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-27 05:08:58,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7690 conditions, 6605 events. 1155/6605 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 56704 event pairs, 522 based on Foata normal form. 0/5374 useless extension candidates. Maximal degree in co-relation 4098. Up to 1024 conditions per place. [2023-08-27 05:08:58,591 INFO L82 GeneralOperation]: Start removeDead. Operand has 310 places, 344 transitions, 808 flow [2023-08-27 05:08:58,636 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 310 places, 344 transitions, 808 flow [2023-08-27 05:08:58,636 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:08:58,636 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 310 places, 344 transitions, 808 flow [2023-08-27 05:08:58,637 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 310 places, 344 transitions, 808 flow [2023-08-27 05:08:58,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 310 places, 344 transitions, 808 flow [2023-08-27 05:08:59,620 INFO L124 PetriNetUnfolderBase]: 1155/6605 cut-off events. [2023-08-27 05:08:59,620 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-27 05:08:59,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7690 conditions, 6605 events. 1155/6605 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 56704 event pairs, 522 based on Foata normal form. 0/5374 useless extension candidates. Maximal degree in co-relation 4098. Up to 1024 conditions per place. [2023-08-27 05:08:59,840 INFO L119 LiptonReduction]: Number of co-enabled transitions 75840 [2023-08-27 05:09:03,881 INFO L134 LiptonReduction]: Checked pairs total: 145581 [2023-08-27 05:09:03,881 INFO L136 LiptonReduction]: Total number of compositions: 318 [2023-08-27 05:09:03,883 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:09:03,884 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;@1352f4fd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:09:03,884 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:09:03,923 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:09:03,924 INFO L124 PetriNetUnfolderBase]: 136/588 cut-off events. [2023-08-27 05:09:03,924 INFO L125 PetriNetUnfolderBase]: For 202/202 co-relation queries the response was YES. [2023-08-27 05:09:03,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:09:03,924 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:09:03,924 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:09:03,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:09:03,925 INFO L85 PathProgramCache]: Analyzing trace with hash -735634353, now seen corresponding path program 1 times [2023-08-27 05:09:03,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:09:03,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073672843] [2023-08-27 05:09:03,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:09:03,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:09:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:09:03,946 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:09:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:09:03,966 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:09:03,967 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:09:03,967 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:09:03,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 05:09:03,967 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:09:03,967 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:09:03,968 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:09:03,968 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-27 05:09:03,992 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-27 05:09:03,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 333 places, 370 transitions, 884 flow [2023-08-27 05:09:06,137 INFO L124 PetriNetUnfolderBase]: 2450/12602 cut-off events. [2023-08-27 05:09:06,138 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-27 05:09:06,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14979 conditions, 12602 events. 2450/12602 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 124009 event pairs, 1291 based on Foata normal form. 0/10323 useless extension candidates. Maximal degree in co-relation 7672. Up to 2304 conditions per place. [2023-08-27 05:09:06,252 INFO L82 GeneralOperation]: Start removeDead. Operand has 333 places, 370 transitions, 884 flow [2023-08-27 05:09:06,325 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 333 places, 370 transitions, 884 flow [2023-08-27 05:09:06,325 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:09:06,325 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 333 places, 370 transitions, 884 flow [2023-08-27 05:09:06,325 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 333 places, 370 transitions, 884 flow [2023-08-27 05:09:06,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 333 places, 370 transitions, 884 flow [2023-08-27 05:09:08,422 INFO L124 PetriNetUnfolderBase]: 2450/12602 cut-off events. [2023-08-27 05:09:08,422 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-27 05:09:08,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14979 conditions, 12602 events. 2450/12602 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 124009 event pairs, 1291 based on Foata normal form. 0/10323 useless extension candidates. Maximal degree in co-relation 7672. Up to 2304 conditions per place. [2023-08-27 05:09:08,947 INFO L119 LiptonReduction]: Number of co-enabled transitions 91152 [2023-08-27 05:09:13,253 INFO L134 LiptonReduction]: Checked pairs total: 185435 [2023-08-27 05:09:13,253 INFO L136 LiptonReduction]: Total number of compositions: 347 [2023-08-27 05:09:13,255 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:09:13,255 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;@1352f4fd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:09:13,255 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:09:13,306 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:09:13,306 INFO L124 PetriNetUnfolderBase]: 184/786 cut-off events. [2023-08-27 05:09:13,307 INFO L125 PetriNetUnfolderBase]: For 309/309 co-relation queries the response was YES. [2023-08-27 05:09:13,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:09:13,307 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:09:13,307 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:09:13,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:09:13,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1234995408, now seen corresponding path program 1 times [2023-08-27 05:09:13,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:09:13,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922619474] [2023-08-27 05:09:13,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:09:13,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:09:13,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:09:13,327 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:09:13,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:09:13,346 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:09:13,346 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:09:13,347 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:09:13,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 05:09:13,347 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:09:13,347 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:09:13,347 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:09:13,347 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-27 05:09:13,374 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-27 05:09:13,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 356 places, 396 transitions, 962 flow [2023-08-27 05:09:17,998 INFO L124 PetriNetUnfolderBase]: 5281/24743 cut-off events. [2023-08-27 05:09:17,999 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-27 05:09:18,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29949 conditions, 24743 events. 5281/24743 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 276870 event pairs, 3084 based on Foata normal form. 0/20392 useless extension candidates. Maximal degree in co-relation 14959. Up to 5120 conditions per place. [2023-08-27 05:09:18,251 INFO L82 GeneralOperation]: Start removeDead. Operand has 356 places, 396 transitions, 962 flow [2023-08-27 05:09:18,529 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 356 places, 396 transitions, 962 flow [2023-08-27 05:09:18,529 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:09:18,529 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 356 places, 396 transitions, 962 flow [2023-08-27 05:09:18,529 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 356 places, 396 transitions, 962 flow [2023-08-27 05:09:18,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 356 places, 396 transitions, 962 flow [2023-08-27 05:09:23,164 INFO L124 PetriNetUnfolderBase]: 5281/24743 cut-off events. [2023-08-27 05:09:23,164 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-27 05:09:23,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29949 conditions, 24743 events. 5281/24743 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 276870 event pairs, 3084 based on Foata normal form. 0/20392 useless extension candidates. Maximal degree in co-relation 14959. Up to 5120 conditions per place. [2023-08-27 05:09:24,244 INFO L119 LiptonReduction]: Number of co-enabled transitions 107760 [2023-08-27 05:09:28,634 INFO L134 LiptonReduction]: Checked pairs total: 193898 [2023-08-27 05:09:28,635 INFO L136 LiptonReduction]: Total number of compositions: 362 [2023-08-27 05:09:28,636 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:09:28,636 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;@1352f4fd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:09:28,636 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:09:28,715 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:09:28,716 INFO L124 PetriNetUnfolderBase]: 260/1077 cut-off events. [2023-08-27 05:09:28,716 INFO L125 PetriNetUnfolderBase]: For 469/469 co-relation queries the response was YES. [2023-08-27 05:09:28,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:09:28,716 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:09:28,716 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:09:28,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:09:28,716 INFO L85 PathProgramCache]: Analyzing trace with hash 903950582, now seen corresponding path program 1 times [2023-08-27 05:09:28,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:09:28,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025675832] [2023-08-27 05:09:28,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:09:28,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:09:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:09:28,738 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:09:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:09:28,757 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:09:28,757 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:09:28,757 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:09:28,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 05:09:28,758 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:09:28,758 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:09:28,758 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:09:28,758 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-27 05:09:28,787 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-27 05:09:28,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 379 places, 422 transitions, 1042 flow [2023-08-27 05:09:38,954 INFO L124 PetriNetUnfolderBase]: 11440/49428 cut-off events. [2023-08-27 05:09:38,955 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-27 05:09:39,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60792 conditions, 49428 events. 11440/49428 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 616112 event pairs, 7181 based on Foata normal form. 0/40957 useless extension candidates. Maximal degree in co-relation 29927. Up to 11264 conditions per place. [2023-08-27 05:09:39,615 INFO L82 GeneralOperation]: Start removeDead. Operand has 379 places, 422 transitions, 1042 flow [2023-08-27 05:09:40,061 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 379 places, 422 transitions, 1042 flow [2023-08-27 05:09:40,062 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:09:40,062 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 379 places, 422 transitions, 1042 flow [2023-08-27 05:09:40,062 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 379 places, 422 transitions, 1042 flow [2023-08-27 05:09:40,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 379 places, 422 transitions, 1042 flow [2023-08-27 05:09:50,040 INFO L124 PetriNetUnfolderBase]: 11440/49428 cut-off events. [2023-08-27 05:09:50,041 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-27 05:09:50,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60792 conditions, 49428 events. 11440/49428 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 616112 event pairs, 7181 based on Foata normal form. 0/40957 useless extension candidates. Maximal degree in co-relation 29927. Up to 11264 conditions per place. [2023-08-27 05:09:52,557 INFO L119 LiptonReduction]: Number of co-enabled transitions 125664 [2023-08-27 05:09:57,263 INFO L134 LiptonReduction]: Checked pairs total: 265406 [2023-08-27 05:09:57,264 INFO L136 LiptonReduction]: Total number of compositions: 388 [2023-08-27 05:09:57,265 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:09:57,265 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;@1352f4fd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:09:57,265 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:09:57,367 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:09:57,367 INFO L124 PetriNetUnfolderBase]: 392/1524 cut-off events. [2023-08-27 05:09:57,367 INFO L125 PetriNetUnfolderBase]: For 713/713 co-relation queries the response was YES. [2023-08-27 05:09:57,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:09:57,367 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:09:57,367 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:09:57,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:09:57,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1057778802, now seen corresponding path program 1 times [2023-08-27 05:09:57,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:09:57,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552344833] [2023-08-27 05:09:57,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:09:57,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:09:57,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:09:57,392 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:09:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:09:57,411 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:09:57,412 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:09:57,412 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:09:57,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 05:09:57,412 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:09:57,412 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:09:57,413 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:09:57,413 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-27 05:09:57,443 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-27 05:09:57,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 402 places, 448 transitions, 1124 flow [2023-08-27 05:10:19,884 INFO L124 PetriNetUnfolderBase]: 24767/99713 cut-off events. [2023-08-27 05:10:19,884 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-27 05:10:22,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124404 conditions, 99713 events. 24767/99713 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1477. Compared 1362907 event pairs, 16398 based on Foata normal form. 0/83026 useless extension candidates. Maximal degree in co-relation 60768. Up to 24576 conditions per place. [2023-08-27 05:10:22,546 INFO L82 GeneralOperation]: Start removeDead. Operand has 402 places, 448 transitions, 1124 flow [2023-08-27 05:10:23,788 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 402 places, 448 transitions, 1124 flow [2023-08-27 05:10:23,789 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:10:23,789 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 402 places, 448 transitions, 1124 flow [2023-08-27 05:10:23,789 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 402 places, 448 transitions, 1124 flow [2023-08-27 05:10:23,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 402 places, 448 transitions, 1124 flow [2023-08-27 05:10:47,643 INFO L124 PetriNetUnfolderBase]: 24767/99713 cut-off events. [2023-08-27 05:10:47,643 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-27 05:10:50,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124404 conditions, 99713 events. 24767/99713 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1477. Compared 1362907 event pairs, 16398 based on Foata normal form. 0/83026 useless extension candidates. Maximal degree in co-relation 60768. Up to 24576 conditions per place. [2023-08-27 05:10:55,706 INFO L119 LiptonReduction]: Number of co-enabled transitions 144864 [2023-08-27 05:11:00,359 INFO L134 LiptonReduction]: Checked pairs total: 275842 [2023-08-27 05:11:00,359 INFO L136 LiptonReduction]: Total number of compositions: 412 [2023-08-27 05:11:00,360 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:11:00,360 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;@1352f4fd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:11:00,360 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:11:00,502 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:11:00,502 INFO L124 PetriNetUnfolderBase]: 608/2205 cut-off events. [2023-08-27 05:11:00,502 INFO L125 PetriNetUnfolderBase]: For 1089/1089 co-relation queries the response was YES. [2023-08-27 05:11:00,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:11:00,502 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:11:00,502 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:11:00,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:11:00,502 INFO L85 PathProgramCache]: Analyzing trace with hash -922391956, now seen corresponding path program 1 times [2023-08-27 05:11:00,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:11:00,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589341877] [2023-08-27 05:11:00,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:11:00,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:11:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:11:00,524 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:11:00,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:11:00,545 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:11:00,545 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:11:00,545 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:11:00,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 05:11:00,545 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:11:00,546 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:11:00,546 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:11:00,546 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-27 05:11:00,583 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-27 05:11:00,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 425 places, 474 transitions, 1208 flow [2023-08-27 05:11:52,029 INFO L124 PetriNetUnfolderBase]: 53454/202222 cut-off events. [2023-08-27 05:11:52,029 INFO L125 PetriNetUnfolderBase]: For 53690/53690 co-relation queries the response was YES. [2023-08-27 05:12:00,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255601 conditions, 202222 events. 53454/202222 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2912. Compared 3009070 event pairs, 36879 based on Foata normal form. 0/169127 useless extension candidates. Maximal degree in co-relation 124380. Up to 53248 conditions per place. [2023-08-27 05:12:00,842 INFO L82 GeneralOperation]: Start removeDead. Operand has 425 places, 474 transitions, 1208 flow [2023-08-27 05:12:04,725 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 425 places, 474 transitions, 1208 flow [2023-08-27 05:12:04,726 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:12:04,726 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 425 places, 474 transitions, 1208 flow [2023-08-27 05:12:04,726 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 425 places, 474 transitions, 1208 flow [2023-08-27 05:12:04,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 425 places, 474 transitions, 1208 flow [2023-08-27 05:12:56,693 INFO L124 PetriNetUnfolderBase]: 53454/202222 cut-off events. [2023-08-27 05:12:56,693 INFO L125 PetriNetUnfolderBase]: For 53690/53690 co-relation queries the response was YES. [2023-08-27 05:13:03,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255601 conditions, 202222 events. 53454/202222 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2912. Compared 3009070 event pairs, 36879 based on Foata normal form. 0/169127 useless extension candidates. Maximal degree in co-relation 124380. Up to 53248 conditions per place. [2023-08-27 05:13:21,228 INFO L119 LiptonReduction]: Number of co-enabled transitions 165360 [2023-08-27 05:13:26,213 INFO L134 LiptonReduction]: Checked pairs total: 322710 [2023-08-27 05:13:26,214 INFO L136 LiptonReduction]: Total number of compositions: 439 [2023-08-27 05:13:26,215 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:13:26,215 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;@1352f4fd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:13:26,215 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:13:26,446 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:13:26,446 INFO L124 PetriNetUnfolderBase]: 961/3255 cut-off events. [2023-08-27 05:13:26,446 INFO L125 PetriNetUnfolderBase]: For 1672/1672 co-relation queries the response was YES. [2023-08-27 05:13:26,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:13:26,446 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:13:26,446 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:13:26,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:13:26,447 INFO L85 PathProgramCache]: Analyzing trace with hash 666452219, now seen corresponding path program 1 times [2023-08-27 05:13:26,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:13:26,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378765440] [2023-08-27 05:13:26,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:13:26,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:13:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:13:26,474 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:13:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:13:26,497 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:13:26,497 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:13:26,497 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:13:26,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 05:13:26,498 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:13:26,498 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:13:26,498 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:13:26,498 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-08-27 05:13:26,534 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-08-27 05:13:26,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 448 places, 500 transitions, 1294 flow