/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_03-munge_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 04:59:46,625 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 04:59:46,704 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 04:59:46,709 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 04:59:46,710 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 04:59:46,741 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 04:59:46,742 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 04:59:46,743 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 04:59:46,743 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 04:59:46,747 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 04:59:46,747 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 04:59:46,747 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 04:59:46,747 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 04:59:46,748 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 04:59:46,749 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 04:59:46,749 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 04:59:46,749 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 04:59:46,749 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 04:59:46,749 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 04:59:46,750 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 04:59:46,750 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 04:59:46,751 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 04:59:46,751 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 04:59:46,751 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 04:59:46,751 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 04:59:46,752 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 04:59:46,752 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 04:59:46,752 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 04:59:46,752 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 04:59:46,753 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 04:59:46,753 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 04:59:46,754 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 04:59:46,754 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 04:59:46,754 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 04:59:46,754 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 04:59:46,754 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 04:59:47,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 04:59:47,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 04:59:47,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 04:59:47,093 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 04:59:47,095 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 04:59:47,096 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i [2023-08-27 04:59:48,194 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 04:59:48,477 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 04:59:48,477 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i [2023-08-27 04:59:48,497 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f69de1e05/839c36e255e54270b91e01739c84407a/FLAGf75aad50c [2023-08-27 04:59:48,508 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f69de1e05/839c36e255e54270b91e01739c84407a [2023-08-27 04:59:48,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 04:59:48,511 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 04:59:48,512 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 04:59:48,512 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 04:59:48,514 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 04:59:48,515 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:59:48" (1/1) ... [2023-08-27 04:59:48,516 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@410fd4cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:59:48, skipping insertion in model container [2023-08-27 04:59:48,516 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:59:48" (1/1) ... [2023-08-27 04:59:48,555 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 04:59:48,909 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 04:59:48,925 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 04:59:48,951 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 04:59:48,953 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 04:59:48,990 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 04:59:49,035 INFO L206 MainTranslator]: Completed translation [2023-08-27 04:59:49,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:59:49 WrapperNode [2023-08-27 04:59:49,036 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 04:59:49,037 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 04:59:49,037 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 04:59:49,037 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 04:59:49,043 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:59:49" (1/1) ... [2023-08-27 04:59:49,076 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:59:49" (1/1) ... [2023-08-27 04:59:49,111 INFO L138 Inliner]: procedures = 172, calls = 44, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 227 [2023-08-27 04:59:49,112 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 04:59:49,113 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 04:59:49,113 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 04:59:49,113 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 04:59:49,121 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:59:49" (1/1) ... [2023-08-27 04:59:49,121 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:59:49" (1/1) ... [2023-08-27 04:59:49,134 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:59:49" (1/1) ... [2023-08-27 04:59:49,135 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:59:49" (1/1) ... [2023-08-27 04:59:49,140 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:59:49" (1/1) ... [2023-08-27 04:59:49,165 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:59:49" (1/1) ... [2023-08-27 04:59:49,167 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:59:49" (1/1) ... [2023-08-27 04:59:49,169 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:59:49" (1/1) ... [2023-08-27 04:59:49,171 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 04:59:49,172 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 04:59:49,172 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 04:59:49,172 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 04:59:49,173 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:59:49" (1/1) ... [2023-08-27 04:59:49,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 04:59:49,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:59:49,210 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 04:59:49,236 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 04:59:49,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 04:59:49,251 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-27 04:59:49,251 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-27 04:59:49,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 04:59:49,252 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 04:59:49,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 04:59:49,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 04:59:49,253 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-27 04:59:49,253 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-27 04:59:49,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 04:59:49,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 04:59:49,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 04:59:49,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 04:59:49,255 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 04:59:49,422 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 04:59:49,424 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 04:59:49,700 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 04:59:49,710 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 04:59:49,710 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-08-27 04:59:49,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:59:49 BoogieIcfgContainer [2023-08-27 04:59:49,712 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 04:59:49,714 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 04:59:49,714 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 04:59:49,717 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 04:59:49,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 04:59:48" (1/3) ... [2023-08-27 04:59:49,718 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@709345bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:59:49, skipping insertion in model container [2023-08-27 04:59:49,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:59:49" (2/3) ... [2023-08-27 04:59:49,718 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@709345bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:59:49, skipping insertion in model container [2023-08-27 04:59:49,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:59:49" (3/3) ... [2023-08-27 04:59:49,719 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_03-munge_racing.i [2023-08-27 04:59:49,750 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 04:59:49,750 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-08-27 04:59:49,750 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 04:59:49,844 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-27 04:59:49,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 242 transitions, 506 flow [2023-08-27 04:59:49,996 INFO L124 PetriNetUnfolderBase]: 61/442 cut-off events. [2023-08-27 04:59:49,996 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-27 04:59:50,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 442 events. 61/442 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1950 event pairs, 0 based on Foata normal form. 0/342 useless extension candidates. Maximal degree in co-relation 236. Up to 8 conditions per place. [2023-08-27 04:59:50,015 INFO L82 GeneralOperation]: Start removeDead. Operand has 213 places, 242 transitions, 506 flow [2023-08-27 04:59:50,022 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 213 places, 242 transitions, 506 flow [2023-08-27 04:59:50,025 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 04:59:50,032 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 213 places, 242 transitions, 506 flow [2023-08-27 04:59:50,035 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 213 places, 242 transitions, 506 flow [2023-08-27 04:59:50,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 242 transitions, 506 flow [2023-08-27 04:59:50,100 INFO L124 PetriNetUnfolderBase]: 61/442 cut-off events. [2023-08-27 04:59:50,100 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-27 04:59:50,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 442 events. 61/442 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1950 event pairs, 0 based on Foata normal form. 0/342 useless extension candidates. Maximal degree in co-relation 236. Up to 8 conditions per place. [2023-08-27 04:59:50,120 INFO L119 LiptonReduction]: Number of co-enabled transitions 25608 [2023-08-27 04:59:54,683 INFO L134 LiptonReduction]: Checked pairs total: 51858 [2023-08-27 04:59:54,683 INFO L136 LiptonReduction]: Total number of compositions: 200 [2023-08-27 04:59:54,695 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 04:59:54,700 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;@311b57e2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 04:59:54,701 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-27 04:59:54,705 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 04:59:54,705 INFO L124 PetriNetUnfolderBase]: 1/25 cut-off events. [2023-08-27 04:59:54,705 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 04:59:54,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:59:54,706 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-27 04:59:54,706 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 04:59:54,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:59:54,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1065260375, now seen corresponding path program 1 times [2023-08-27 04:59:54,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:59:54,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929108849] [2023-08-27 04:59:54,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:59:54,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:59:54,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 04:59:54,822 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 04:59:54,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 04:59:54,863 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 04:59:54,865 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 04:59:54,866 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-27 04:59:54,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-27 04:59:54,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 04:59:54,868 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 04:59:54,870 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-27 04:59:54,871 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 04:59:54,871 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-27 04:59:54,929 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-27 04:59:54,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 380 transitions, 808 flow [2023-08-27 04:59:55,170 INFO L124 PetriNetUnfolderBase]: 205/1336 cut-off events. [2023-08-27 04:59:55,170 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-27 04:59:55,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1433 conditions, 1336 events. 205/1336 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 8334 event pairs, 1 based on Foata normal form. 0/1028 useless extension candidates. Maximal degree in co-relation 801. Up to 32 conditions per place. [2023-08-27 04:59:55,197 INFO L82 GeneralOperation]: Start removeDead. Operand has 325 places, 380 transitions, 808 flow [2023-08-27 04:59:55,215 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 325 places, 380 transitions, 808 flow [2023-08-27 04:59:55,215 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 04:59:55,215 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 325 places, 380 transitions, 808 flow [2023-08-27 04:59:55,216 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 325 places, 380 transitions, 808 flow [2023-08-27 04:59:55,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 380 transitions, 808 flow [2023-08-27 04:59:55,513 INFO L124 PetriNetUnfolderBase]: 205/1336 cut-off events. [2023-08-27 04:59:55,514 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-27 04:59:55,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1433 conditions, 1336 events. 205/1336 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 8334 event pairs, 1 based on Foata normal form. 0/1028 useless extension candidates. Maximal degree in co-relation 801. Up to 32 conditions per place. [2023-08-27 04:59:55,598 INFO L119 LiptonReduction]: Number of co-enabled transitions 88704 [2023-08-27 05:00:00,690 INFO L134 LiptonReduction]: Checked pairs total: 217185 [2023-08-27 05:00:00,690 INFO L136 LiptonReduction]: Total number of compositions: 299 [2023-08-27 05:00:00,692 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:00:00,693 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;@311b57e2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:00:00,693 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-27 05:00:00,704 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:00:00,704 INFO L124 PetriNetUnfolderBase]: 34/149 cut-off events. [2023-08-27 05:00:00,704 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-27 05:00:00,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:00:00,704 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-27 05:00:00,705 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:00:00,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:00:00,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1367049149, now seen corresponding path program 1 times [2023-08-27 05:00:00,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:00:00,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213373622] [2023-08-27 05:00:00,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:00:00,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:00:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:00:00,730 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:00:00,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:00:00,752 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:00:00,752 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:00:00,752 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-27 05:00:00,753 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-27 05:00:00,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 05:00:00,753 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:00:00,754 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-27 05:00:00,754 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:00:00,754 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-27 05:00:00,797 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-27 05:00:00,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 437 places, 518 transitions, 1114 flow [2023-08-27 05:00:01,800 INFO L124 PetriNetUnfolderBase]: 679/3886 cut-off events. [2023-08-27 05:00:01,800 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2023-08-27 05:00:01,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4337 conditions, 3886 events. 679/3886 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 30339 event pairs, 52 based on Foata normal form. 0/3038 useless extension candidates. Maximal degree in co-relation 2428. Up to 192 conditions per place. [2023-08-27 05:00:01,923 INFO L82 GeneralOperation]: Start removeDead. Operand has 437 places, 518 transitions, 1114 flow [2023-08-27 05:00:01,990 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 437 places, 518 transitions, 1114 flow [2023-08-27 05:00:01,990 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:00:01,990 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 437 places, 518 transitions, 1114 flow [2023-08-27 05:00:01,991 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 437 places, 518 transitions, 1114 flow [2023-08-27 05:00:01,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 437 places, 518 transitions, 1114 flow [2023-08-27 05:00:02,930 INFO L124 PetriNetUnfolderBase]: 679/3886 cut-off events. [2023-08-27 05:00:02,930 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2023-08-27 05:00:03,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4337 conditions, 3886 events. 679/3886 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 30339 event pairs, 52 based on Foata normal form. 0/3038 useless extension candidates. Maximal degree in co-relation 2428. Up to 192 conditions per place. [2023-08-27 05:00:03,414 INFO L119 LiptonReduction]: Number of co-enabled transitions 189288 [2023-08-27 05:00:08,857 INFO L134 LiptonReduction]: Checked pairs total: 487255 [2023-08-27 05:00:08,857 INFO L136 LiptonReduction]: Total number of compositions: 390 [2023-08-27 05:00:08,859 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:00:08,860 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;@311b57e2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:00:08,860 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-27 05:00:08,881 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:00:08,881 INFO L124 PetriNetUnfolderBase]: 77/313 cut-off events. [2023-08-27 05:00:08,881 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-08-27 05:00:08,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:00:08,882 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-27 05:00:08,882 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:00:08,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:00:08,882 INFO L85 PathProgramCache]: Analyzing trace with hash 361622929, now seen corresponding path program 1 times [2023-08-27 05:00:08,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:00:08,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600505863] [2023-08-27 05:00:08,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:00:08,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:00:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:00:08,907 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:00:08,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:00:08,930 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:00:08,930 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:00:08,930 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-27 05:00:08,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-27 05:00:08,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 05:00:08,931 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:00:08,931 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-27 05:00:08,932 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:00:08,932 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-27 05:00:08,978 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-08-27 05:00:08,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 549 places, 656 transitions, 1424 flow [2023-08-27 05:00:13,289 INFO L124 PetriNetUnfolderBase]: 2671/12844 cut-off events. [2023-08-27 05:00:13,289 INFO L125 PetriNetUnfolderBase]: For 2144/2144 co-relation queries the response was YES. [2023-08-27 05:00:13,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15009 conditions, 12844 events. 2671/12844 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 124365 event pairs, 626 based on Foata normal form. 0/10260 useless extension candidates. Maximal degree in co-relation 7886. Up to 1024 conditions per place. [2023-08-27 05:00:13,577 INFO L82 GeneralOperation]: Start removeDead. Operand has 549 places, 656 transitions, 1424 flow [2023-08-27 05:00:13,859 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 549 places, 656 transitions, 1424 flow [2023-08-27 05:00:13,859 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:00:13,859 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 549 places, 656 transitions, 1424 flow [2023-08-27 05:00:13,860 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 549 places, 656 transitions, 1424 flow [2023-08-27 05:00:13,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 549 places, 656 transitions, 1424 flow [2023-08-27 05:00:17,870 INFO L124 PetriNetUnfolderBase]: 2671/12844 cut-off events. [2023-08-27 05:00:17,870 INFO L125 PetriNetUnfolderBase]: For 2144/2144 co-relation queries the response was YES. [2023-08-27 05:00:18,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15009 conditions, 12844 events. 2671/12844 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 124365 event pairs, 626 based on Foata normal form. 0/10260 useless extension candidates. Maximal degree in co-relation 7886. Up to 1024 conditions per place. [2023-08-27 05:00:19,215 INFO L119 LiptonReduction]: Number of co-enabled transitions 327360 [2023-08-27 05:00:25,654 INFO L134 LiptonReduction]: Checked pairs total: 796807 [2023-08-27 05:00:25,654 INFO L136 LiptonReduction]: Total number of compositions: 483 [2023-08-27 05:00:25,657 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:00:25,662 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;@311b57e2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:00:25,662 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-27 05:00:25,707 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:00:25,707 INFO L124 PetriNetUnfolderBase]: 138/564 cut-off events. [2023-08-27 05:00:25,707 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-08-27 05:00:25,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:00:25,707 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-27 05:00:25,709 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:00:25,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:00:25,710 INFO L85 PathProgramCache]: Analyzing trace with hash 2088525669, now seen corresponding path program 1 times [2023-08-27 05:00:25,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:00:25,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998763908] [2023-08-27 05:00:25,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:00:25,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:00:25,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:00:25,764 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:00:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:00:25,804 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:00:25,814 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:00:25,814 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-27 05:00:25,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-27 05:00:25,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 05:00:25,814 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:00:25,815 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-27 05:00:25,816 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:00:25,816 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-27 05:00:25,877 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2023-08-27 05:00:25,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 661 places, 794 transitions, 1738 flow [2023-08-27 05:00:45,146 INFO L124 PetriNetUnfolderBase]: 11797/48082 cut-off events. [2023-08-27 05:00:45,146 INFO L125 PetriNetUnfolderBase]: For 10450/10450 co-relation queries the response was YES. [2023-08-27 05:00:47,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58508 conditions, 48082 events. 11797/48082 cut-off events. For 10450/10450 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 572142 event pairs, 3676 based on Foata normal form. 0/39110 useless extension candidates. Maximal degree in co-relation 29274. Up to 5120 conditions per place. [2023-08-27 05:00:47,337 INFO L82 GeneralOperation]: Start removeDead. Operand has 661 places, 794 transitions, 1738 flow [2023-08-27 05:00:48,707 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 661 places, 794 transitions, 1738 flow [2023-08-27 05:00:48,707 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:00:48,708 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 661 places, 794 transitions, 1738 flow [2023-08-27 05:00:48,708 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 661 places, 794 transitions, 1738 flow [2023-08-27 05:00:48,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 661 places, 794 transitions, 1738 flow [2023-08-27 05:01:07,391 INFO L124 PetriNetUnfolderBase]: 11797/48082 cut-off events. [2023-08-27 05:01:07,391 INFO L125 PetriNetUnfolderBase]: For 10450/10450 co-relation queries the response was YES. [2023-08-27 05:01:09,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58508 conditions, 48082 events. 11797/48082 cut-off events. For 10450/10450 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 572142 event pairs, 3676 based on Foata normal form. 0/39110 useless extension candidates. Maximal degree in co-relation 29274. Up to 5120 conditions per place. [2023-08-27 05:01:15,187 INFO L119 LiptonReduction]: Number of co-enabled transitions 502920 [2023-08-27 05:01:22,560 INFO L134 LiptonReduction]: Checked pairs total: 1175794 [2023-08-27 05:01:22,560 INFO L136 LiptonReduction]: Total number of compositions: 602 [2023-08-27 05:01:22,565 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:01:22,569 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;@311b57e2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:01:22,569 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-27 05:01:22,635 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:01:22,636 INFO L124 PetriNetUnfolderBase]: 222/914 cut-off events. [2023-08-27 05:01:22,636 INFO L125 PetriNetUnfolderBase]: For 165/165 co-relation queries the response was YES. [2023-08-27 05:01:22,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:01:22,637 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:01:22,637 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:01:22,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:01:22,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1010146579, now seen corresponding path program 1 times [2023-08-27 05:01:22,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:01:22,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532288431] [2023-08-27 05:01:22,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:01:22,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:01:22,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:01:22,672 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:01:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:01:22,725 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:01:22,725 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:01:22,725 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-27 05:01:22,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-27 05:01:22,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 05:01:22,725 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:01:22,726 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-27 05:01:22,726 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:01:22,726 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-27 05:01:22,792 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2023-08-27 05:01:22,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 773 places, 932 transitions, 2056 flow [2023-08-27 05:03:12,450 INFO L124 PetriNetUnfolderBase]: 53977/192544 cut-off events. [2023-08-27 05:03:12,452 INFO L125 PetriNetUnfolderBase]: For 49552/49552 co-relation queries the response was YES. [2023-08-27 05:03:28,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241973 conditions, 192544 events. 53977/192544 cut-off events. For 49552/49552 co-relation queries the response was YES. Maximal size of possible extension queue 2129. Compared 2733297 event pairs, 24930 based on Foata normal form. 0/158708 useless extension candidates. Maximal degree in co-relation 118435. Up to 24576 conditions per place. [2023-08-27 05:03:28,079 INFO L82 GeneralOperation]: Start removeDead. Operand has 773 places, 932 transitions, 2056 flow [2023-08-27 05:03:37,807 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 773 places, 932 transitions, 2056 flow [2023-08-27 05:03:37,808 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:03:37,808 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 773 places, 932 transitions, 2056 flow [2023-08-27 05:03:37,809 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 773 places, 932 transitions, 2056 flow [2023-08-27 05:03:37,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 773 places, 932 transitions, 2056 flow