/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_79-equ_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 05:25:36,684 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 05:25:36,744 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 05:25:36,747 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 05:25:36,747 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 05:25:36,771 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 05:25:36,772 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 05:25:36,772 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 05:25:36,773 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 05:25:36,777 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 05:25:36,777 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 05:25:36,778 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 05:25:36,778 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 05:25:36,778 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 05:25:36,778 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 05:25:36,778 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 05:25:36,778 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 05:25:36,778 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 05:25:36,779 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 05:25:36,779 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 05:25:36,779 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 05:25:36,781 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 05:25:36,781 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 05:25:36,781 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 05:25:36,781 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 05:25:36,782 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 05:25:36,782 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 05:25:36,782 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 05:25:36,782 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 05:25:36,782 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 05:25:36,783 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 05:25:36,783 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 05:25:36,783 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 05:25:36,783 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 05:25:36,784 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 05:25:36,784 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 05:25:37,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 05:25:37,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 05:25:37,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 05:25:37,066 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 05:25:37,066 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 05:25:37,067 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_79-equ_racefree.i [2023-08-27 05:25:38,247 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 05:25:38,516 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 05:25:38,516 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_79-equ_racefree.i [2023-08-27 05:25:38,534 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcdf49477/5966aa0cceae42db95039d34625ec384/FLAG33554f0ad [2023-08-27 05:25:38,548 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcdf49477/5966aa0cceae42db95039d34625ec384 [2023-08-27 05:25:38,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 05:25:38,551 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 05:25:38,551 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 05:25:38,551 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 05:25:38,553 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 05:25:38,555 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:25:38" (1/1) ... [2023-08-27 05:25:38,556 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3045106a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:25:38, skipping insertion in model container [2023-08-27 05:25:38,556 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:25:38" (1/1) ... [2023-08-27 05:25:38,592 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 05:25:38,923 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 05:25:38,936 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 05:25:38,958 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 05:25:38,963 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 05:25:38,978 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 05:25:39,025 INFO L206 MainTranslator]: Completed translation [2023-08-27 05:25:39,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:25:39 WrapperNode [2023-08-27 05:25:39,026 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 05:25:39,027 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 05:25:39,028 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 05:25:39,028 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 05:25:39,032 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:25:39" (1/1) ... [2023-08-27 05:25:39,069 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:25:39" (1/1) ... [2023-08-27 05:25:39,095 INFO L138 Inliner]: procedures = 271, calls = 57, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 228 [2023-08-27 05:25:39,096 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 05:25:39,096 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 05:25:39,096 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 05:25:39,097 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 05:25:39,104 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:25:39" (1/1) ... [2023-08-27 05:25:39,104 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:25:39" (1/1) ... [2023-08-27 05:25:39,115 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:25:39" (1/1) ... [2023-08-27 05:25:39,115 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:25:39" (1/1) ... [2023-08-27 05:25:39,120 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:25:39" (1/1) ... [2023-08-27 05:25:39,123 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:25:39" (1/1) ... [2023-08-27 05:25:39,135 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:25:39" (1/1) ... [2023-08-27 05:25:39,136 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:25:39" (1/1) ... [2023-08-27 05:25:39,138 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 05:25:39,139 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 05:25:39,139 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 05:25:39,139 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 05:25:39,140 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:25:39" (1/1) ... [2023-08-27 05:25:39,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 05:25:39,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 05:25:39,184 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 05:25:39,187 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 05:25:39,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 05:25:39,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 05:25:39,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 05:25:39,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 05:25:39,218 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 05:25:39,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 05:25:39,218 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-27 05:25:39,218 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-27 05:25:39,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 05:25:39,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 05:25:39,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 05:25:39,220 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 05:25:39,356 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 05:25:39,357 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 05:25:39,590 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 05:25:39,600 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 05:25:39,601 INFO L302 CfgBuilder]: Removed 22 assume(true) statements. [2023-08-27 05:25:39,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:25:39 BoogieIcfgContainer [2023-08-27 05:25:39,603 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 05:25:39,604 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 05:25:39,604 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 05:25:39,606 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 05:25:39,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 05:25:38" (1/3) ... [2023-08-27 05:25:39,606 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48f10f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:25:39, skipping insertion in model container [2023-08-27 05:25:39,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:25:39" (2/3) ... [2023-08-27 05:25:39,607 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48f10f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:25:39, skipping insertion in model container [2023-08-27 05:25:39,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:25:39" (3/3) ... [2023-08-27 05:25:39,607 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_79-equ_racefree.i [2023-08-27 05:25:39,620 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 05:25:39,621 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-08-27 05:25:39,621 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 05:25:39,695 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-27 05:25:39,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 243 transitions, 494 flow [2023-08-27 05:25:39,785 INFO L124 PetriNetUnfolderBase]: 46/327 cut-off events. [2023-08-27 05:25:39,785 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 05:25:39,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 327 events. 46/327 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1093 event pairs, 0 based on Foata normal form. 0/255 useless extension candidates. Maximal degree in co-relation 162. Up to 8 conditions per place. [2023-08-27 05:25:39,793 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 243 transitions, 494 flow [2023-08-27 05:25:39,801 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 228 transitions, 461 flow [2023-08-27 05:25:39,804 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:25:39,810 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 202 places, 228 transitions, 461 flow [2023-08-27 05:25:39,812 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 202 places, 228 transitions, 461 flow [2023-08-27 05:25:39,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 228 transitions, 461 flow [2023-08-27 05:25:39,863 INFO L124 PetriNetUnfolderBase]: 44/312 cut-off events. [2023-08-27 05:25:39,863 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 05:25:39,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 312 events. 44/312 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1049 event pairs, 0 based on Foata normal form. 0/247 useless extension candidates. Maximal degree in co-relation 162. Up to 8 conditions per place. [2023-08-27 05:25:39,873 INFO L119 LiptonReduction]: Number of co-enabled transitions 12972 [2023-08-27 05:25:44,956 INFO L134 LiptonReduction]: Checked pairs total: 25500 [2023-08-27 05:25:44,956 INFO L136 LiptonReduction]: Total number of compositions: 214 [2023-08-27 05:25:44,978 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:25:44,983 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;@558f3fad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:25:44,983 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:25:44,996 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:25:44,997 INFO L124 PetriNetUnfolderBase]: 11/43 cut-off events. [2023-08-27 05:25:44,997 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 05:25:44,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:25:44,997 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-27 05:25:44,998 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:25:45,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:25:45,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1431358971, now seen corresponding path program 1 times [2023-08-27 05:25:45,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:25:45,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720366865] [2023-08-27 05:25:45,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:25:45,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:25:45,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:25:45,174 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:25:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:25:45,249 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:25:45,250 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:25:45,251 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:25:45,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 05:25:45,253 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:25:45,254 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:25:45,255 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:25:45,255 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-27 05:25:45,285 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 05:25:45,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 274 places, 314 transitions, 646 flow [2023-08-27 05:25:45,346 INFO L124 PetriNetUnfolderBase]: 77/519 cut-off events. [2023-08-27 05:25:45,346 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 05:25:45,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 533 conditions, 519 events. 77/519 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2096 event pairs, 0 based on Foata normal form. 0/399 useless extension candidates. Maximal degree in co-relation 329. Up to 12 conditions per place. [2023-08-27 05:25:45,349 INFO L82 GeneralOperation]: Start removeDead. Operand has 274 places, 314 transitions, 646 flow [2023-08-27 05:25:45,352 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 269 places, 308 transitions, 634 flow [2023-08-27 05:25:45,352 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:25:45,352 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 269 places, 308 transitions, 634 flow [2023-08-27 05:25:45,353 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 269 places, 308 transitions, 634 flow [2023-08-27 05:25:45,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 269 places, 308 transitions, 634 flow [2023-08-27 05:25:45,393 INFO L124 PetriNetUnfolderBase]: 76/513 cut-off events. [2023-08-27 05:25:45,394 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 05:25:45,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 527 conditions, 513 events. 76/513 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2098 event pairs, 0 based on Foata normal form. 0/398 useless extension candidates. Maximal degree in co-relation 323. Up to 12 conditions per place. [2023-08-27 05:25:45,410 INFO L119 LiptonReduction]: Number of co-enabled transitions 38088 [2023-08-27 05:25:51,814 INFO L134 LiptonReduction]: Checked pairs total: 90234 [2023-08-27 05:25:51,814 INFO L136 LiptonReduction]: Total number of compositions: 278 [2023-08-27 05:25:51,817 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:25:51,820 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;@558f3fad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:25:51,820 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:25:51,828 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:25:51,828 INFO L124 PetriNetUnfolderBase]: 36/129 cut-off events. [2023-08-27 05:25:51,829 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 05:25:51,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:25:51,829 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-27 05:25:51,829 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:25:51,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:25:51,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1522423392, now seen corresponding path program 1 times [2023-08-27 05:25:51,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:25:51,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857947752] [2023-08-27 05:25:51,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:25:51,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:25:51,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:25:51,872 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:25:51,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:25:51,911 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:25:51,912 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:25:51,912 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:25:51,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 05:25:51,912 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:25:51,913 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:25:51,913 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:25:51,913 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-27 05:25:51,931 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 05:25:51,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 333 places, 385 transitions, 800 flow [2023-08-27 05:25:52,018 INFO L124 PetriNetUnfolderBase]: 113/752 cut-off events. [2023-08-27 05:25:52,018 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 05:25:52,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 780 conditions, 752 events. 113/752 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3360 event pairs, 1 based on Foata normal form. 0/576 useless extension candidates. Maximal degree in co-relation 527. Up to 16 conditions per place. [2023-08-27 05:25:52,026 INFO L82 GeneralOperation]: Start removeDead. Operand has 333 places, 385 transitions, 800 flow [2023-08-27 05:25:52,031 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 328 places, 379 transitions, 788 flow [2023-08-27 05:25:52,031 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:25:52,031 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 328 places, 379 transitions, 788 flow [2023-08-27 05:25:52,031 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 328 places, 379 transitions, 788 flow [2023-08-27 05:25:52,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 328 places, 379 transitions, 788 flow [2023-08-27 05:25:52,098 INFO L124 PetriNetUnfolderBase]: 112/746 cut-off events. [2023-08-27 05:25:52,098 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 05:25:52,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 774 conditions, 746 events. 112/746 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3358 event pairs, 1 based on Foata normal form. 0/575 useless extension candidates. Maximal degree in co-relation 521. Up to 16 conditions per place. [2023-08-27 05:25:52,121 INFO L119 LiptonReduction]: Number of co-enabled transitions 72036 [2023-08-27 05:25:57,754 INFO L134 LiptonReduction]: Checked pairs total: 161247 [2023-08-27 05:25:57,754 INFO L136 LiptonReduction]: Total number of compositions: 345 [2023-08-27 05:25:57,756 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:25:57,757 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@558f3fad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:25:57,757 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:25:57,773 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:25:57,773 INFO L124 PetriNetUnfolderBase]: 62/206 cut-off events. [2023-08-27 05:25:57,773 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-27 05:25:57,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:25:57,774 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-27 05:25:57,774 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:25:57,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:25:57,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1063085415, now seen corresponding path program 1 times [2023-08-27 05:25:57,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:25:57,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691176976] [2023-08-27 05:25:57,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:25:57,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:25:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:25:57,809 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:25:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:25:57,827 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:25:57,827 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:25:57,827 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:25:57,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 05:25:57,828 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:25:57,828 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:25:57,828 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:25:57,828 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-27 05:25:57,854 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-27 05:25:57,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 392 places, 456 transitions, 956 flow [2023-08-27 05:25:57,962 INFO L124 PetriNetUnfolderBase]: 161/1069 cut-off events. [2023-08-27 05:25:57,963 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-27 05:25:57,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1124 conditions, 1069 events. 161/1069 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 5138 event pairs, 6 based on Foata normal form. 0/821 useless extension candidates. Maximal degree in co-relation 772. Up to 32 conditions per place. [2023-08-27 05:25:57,976 INFO L82 GeneralOperation]: Start removeDead. Operand has 392 places, 456 transitions, 956 flow [2023-08-27 05:25:57,990 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 387 places, 450 transitions, 944 flow [2023-08-27 05:25:57,990 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:25:57,990 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 387 places, 450 transitions, 944 flow [2023-08-27 05:25:57,991 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 387 places, 450 transitions, 944 flow [2023-08-27 05:25:57,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 387 places, 450 transitions, 944 flow [2023-08-27 05:25:58,099 INFO L124 PetriNetUnfolderBase]: 160/1063 cut-off events. [2023-08-27 05:25:58,099 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-27 05:25:58,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1118 conditions, 1063 events. 160/1063 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 5142 event pairs, 6 based on Foata normal form. 0/820 useless extension candidates. Maximal degree in co-relation 766. Up to 32 conditions per place. [2023-08-27 05:25:58,145 INFO L119 LiptonReduction]: Number of co-enabled transitions 115920 [2023-08-27 05:26:04,850 INFO L134 LiptonReduction]: Checked pairs total: 286543 [2023-08-27 05:26:04,850 INFO L136 LiptonReduction]: Total number of compositions: 402 [2023-08-27 05:26:04,851 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:26:04,852 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;@558f3fad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:26:04,852 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:26:04,865 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:26:04,865 INFO L124 PetriNetUnfolderBase]: 86/292 cut-off events. [2023-08-27 05:26:04,865 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-08-27 05:26:04,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:26:04,865 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-27 05:26:04,865 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:26:04,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:26:04,866 INFO L85 PathProgramCache]: Analyzing trace with hash 341635975, now seen corresponding path program 1 times [2023-08-27 05:26:04,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:26:04,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946931970] [2023-08-27 05:26:04,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:26:04,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:26:04,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:26:04,884 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:26:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:26:04,907 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:26:04,908 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:26:04,908 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:26:04,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 05:26:04,908 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:26:04,909 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:26:04,909 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:26:04,909 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-27 05:26:04,943 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-27 05:26:04,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 451 places, 527 transitions, 1114 flow [2023-08-27 05:26:05,168 INFO L124 PetriNetUnfolderBase]: 237/1558 cut-off events. [2023-08-27 05:26:05,168 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-27 05:26:05,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1669 conditions, 1558 events. 237/1558 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 8312 event pairs, 23 based on Foata normal form. 0/1206 useless extension candidates. Maximal degree in co-relation 1114. Up to 80 conditions per place. [2023-08-27 05:26:05,198 INFO L82 GeneralOperation]: Start removeDead. Operand has 451 places, 527 transitions, 1114 flow [2023-08-27 05:26:05,212 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 446 places, 521 transitions, 1102 flow [2023-08-27 05:26:05,212 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:26:05,212 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 446 places, 521 transitions, 1102 flow [2023-08-27 05:26:05,212 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 446 places, 521 transitions, 1102 flow [2023-08-27 05:26:05,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 446 places, 521 transitions, 1102 flow [2023-08-27 05:26:05,486 INFO L124 PetriNetUnfolderBase]: 236/1552 cut-off events. [2023-08-27 05:26:05,486 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-27 05:26:05,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1663 conditions, 1552 events. 236/1552 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 8281 event pairs, 23 based on Foata normal form. 0/1205 useless extension candidates. Maximal degree in co-relation 1108. Up to 80 conditions per place. [2023-08-27 05:26:05,568 INFO L119 LiptonReduction]: Number of co-enabled transitions 169740 [2023-08-27 05:26:11,927 INFO L134 LiptonReduction]: Checked pairs total: 392893 [2023-08-27 05:26:11,928 INFO L136 LiptonReduction]: Total number of compositions: 453 [2023-08-27 05:26:11,930 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:26:11,932 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;@558f3fad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:26:11,932 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:26:11,953 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:26:11,953 INFO L124 PetriNetUnfolderBase]: 113/389 cut-off events. [2023-08-27 05:26:11,953 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-27 05:26:11,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:26:11,954 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:26:11,954 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:26:11,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:26:11,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1216743227, now seen corresponding path program 1 times [2023-08-27 05:26:11,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:26:11,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792839334] [2023-08-27 05:26:11,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:26:11,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:26:11,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:26:11,999 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:26:12,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:26:12,035 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:26:12,036 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:26:12,036 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:26:12,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 05:26:12,036 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:26:12,037 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:26:12,037 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:26:12,037 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-27 05:26:12,066 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-27 05:26:12,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 510 places, 598 transitions, 1274 flow [2023-08-27 05:26:12,478 INFO L124 PetriNetUnfolderBase]: 377/2399 cut-off events. [2023-08-27 05:26:12,478 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-27 05:26:12,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2631 conditions, 2399 events. 377/2399 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 14584 event pairs, 72 based on Foata normal form. 0/1879 useless extension candidates. Maximal degree in co-relation 1657. Up to 192 conditions per place. [2023-08-27 05:26:12,533 INFO L82 GeneralOperation]: Start removeDead. Operand has 510 places, 598 transitions, 1274 flow [2023-08-27 05:26:12,555 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 505 places, 592 transitions, 1262 flow [2023-08-27 05:26:12,555 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:26:12,555 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 505 places, 592 transitions, 1262 flow [2023-08-27 05:26:12,555 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 505 places, 592 transitions, 1262 flow [2023-08-27 05:26:12,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 505 places, 592 transitions, 1262 flow [2023-08-27 05:26:12,975 INFO L124 PetriNetUnfolderBase]: 376/2393 cut-off events. [2023-08-27 05:26:12,975 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-27 05:26:13,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2625 conditions, 2393 events. 376/2393 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 14605 event pairs, 72 based on Foata normal form. 0/1878 useless extension candidates. Maximal degree in co-relation 1651. Up to 192 conditions per place. [2023-08-27 05:26:13,128 INFO L119 LiptonReduction]: Number of co-enabled transitions 233496 [2023-08-27 05:26:18,834 INFO L134 LiptonReduction]: Checked pairs total: 588073 [2023-08-27 05:26:18,834 INFO L136 LiptonReduction]: Total number of compositions: 528 [2023-08-27 05:26:18,836 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:26:18,836 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;@558f3fad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:26:18,836 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:26:18,898 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:26:18,898 INFO L124 PetriNetUnfolderBase]: 145/499 cut-off events. [2023-08-27 05:26:18,898 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2023-08-27 05:26:18,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:26:18,898 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:26:18,898 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:26:18,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:26:18,899 INFO L85 PathProgramCache]: Analyzing trace with hash -707180548, now seen corresponding path program 1 times [2023-08-27 05:26:18,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:26:18,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401835127] [2023-08-27 05:26:18,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:26:18,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:26:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:26:18,965 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:26:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:26:18,979 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:26:18,980 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:26:18,980 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:26:18,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 05:26:18,980 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:26:18,980 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:26:18,980 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:26:18,980 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-27 05:26:19,009 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-27 05:26:19,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 569 places, 669 transitions, 1436 flow [2023-08-27 05:26:19,721 INFO L124 PetriNetUnfolderBase]: 661/3960 cut-off events. [2023-08-27 05:26:19,721 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-27 05:26:19,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4458 conditions, 3960 events. 661/3960 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 28185 event pairs, 201 based on Foata normal form. 0/3144 useless extension candidates. Maximal degree in co-relation 2617. Up to 448 conditions per place. [2023-08-27 05:26:19,834 INFO L82 GeneralOperation]: Start removeDead. Operand has 569 places, 669 transitions, 1436 flow [2023-08-27 05:26:19,988 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 564 places, 663 transitions, 1424 flow [2023-08-27 05:26:19,988 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:26:19,988 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 564 places, 663 transitions, 1424 flow [2023-08-27 05:26:19,988 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 564 places, 663 transitions, 1424 flow [2023-08-27 05:26:19,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 564 places, 663 transitions, 1424 flow [2023-08-27 05:26:20,734 INFO L124 PetriNetUnfolderBase]: 660/3954 cut-off events. [2023-08-27 05:26:20,735 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-27 05:26:20,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4452 conditions, 3954 events. 660/3954 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 28113 event pairs, 201 based on Foata normal form. 0/3143 useless extension candidates. Maximal degree in co-relation 2611. Up to 448 conditions per place. [2023-08-27 05:26:21,071 INFO L119 LiptonReduction]: Number of co-enabled transitions 307188 [2023-08-27 05:26:27,965 INFO L134 LiptonReduction]: Checked pairs total: 788908 [2023-08-27 05:26:27,965 INFO L136 LiptonReduction]: Total number of compositions: 588 [2023-08-27 05:26:27,967 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:26:27,967 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;@558f3fad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:26:27,967 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:26:28,006 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:26:28,007 INFO L124 PetriNetUnfolderBase]: 184/637 cut-off events. [2023-08-27 05:26:28,007 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2023-08-27 05:26:28,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:26:28,007 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:26:28,007 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:26:28,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:26:28,007 INFO L85 PathProgramCache]: Analyzing trace with hash -171715239, now seen corresponding path program 1 times [2023-08-27 05:26:28,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:26:28,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432841224] [2023-08-27 05:26:28,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:26:28,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:26:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:26:28,051 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:26:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:26:28,073 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:26:28,073 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:26:28,073 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:26:28,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 05:26:28,073 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:26:28,074 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:26:28,074 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:26:28,074 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-27 05:26:28,106 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-27 05:26:28,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 628 places, 740 transitions, 1600 flow [2023-08-27 05:26:29,715 INFO L124 PetriNetUnfolderBase]: 1265/6993 cut-off events. [2023-08-27 05:26:29,716 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-27 05:26:29,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8078 conditions, 6993 events. 1265/6993 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 58589 event pairs, 522 based on Foata normal form. 0/5625 useless extension candidates. Maximal degree in co-relation 4442. Up to 1024 conditions per place. [2023-08-27 05:26:29,869 INFO L82 GeneralOperation]: Start removeDead. Operand has 628 places, 740 transitions, 1600 flow [2023-08-27 05:26:29,940 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 623 places, 734 transitions, 1588 flow [2023-08-27 05:26:29,940 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:26:29,940 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 623 places, 734 transitions, 1588 flow [2023-08-27 05:26:29,941 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 623 places, 734 transitions, 1588 flow [2023-08-27 05:26:29,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 623 places, 734 transitions, 1588 flow [2023-08-27 05:26:31,611 INFO L124 PetriNetUnfolderBase]: 1264/6987 cut-off events. [2023-08-27 05:26:31,611 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-27 05:26:31,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8072 conditions, 6987 events. 1264/6987 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 58653 event pairs, 522 based on Foata normal form. 0/5624 useless extension candidates. Maximal degree in co-relation 4436. Up to 1024 conditions per place. [2023-08-27 05:26:32,372 INFO L119 LiptonReduction]: Number of co-enabled transitions 390816 [2023-08-27 05:26:40,998 INFO L134 LiptonReduction]: Checked pairs total: 1096597 [2023-08-27 05:26:40,999 INFO L136 LiptonReduction]: Total number of compositions: 630 [2023-08-27 05:26:41,015 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:26:41,015 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;@558f3fad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:26:41,015 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:26:41,080 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:26:41,081 INFO L124 PetriNetUnfolderBase]: 224/805 cut-off events. [2023-08-27 05:26:41,081 INFO L125 PetriNetUnfolderBase]: For 202/202 co-relation queries the response was YES. [2023-08-27 05:26:41,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:26:41,081 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:26:41,081 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:26:41,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:26:41,081 INFO L85 PathProgramCache]: Analyzing trace with hash 77338353, now seen corresponding path program 1 times [2023-08-27 05:26:41,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:26:41,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933244562] [2023-08-27 05:26:41,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:26:41,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:26:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:26:41,098 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:26:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:26:41,114 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:26:41,114 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:26:41,114 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:26:41,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 05:26:41,115 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:26:41,115 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:26:41,115 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:26:41,115 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-27 05:26:41,145 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-27 05:26:41,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 687 places, 811 transitions, 1766 flow [2023-08-27 05:26:45,055 INFO L124 PetriNetUnfolderBase]: 2573/13034 cut-off events. [2023-08-27 05:26:45,055 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-27 05:26:45,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15411 conditions, 13034 events. 2573/13034 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 126652 event pairs, 1291 based on Foata normal form. 0/10602 useless extension candidates. Maximal degree in co-relation 8060. Up to 2304 conditions per place. [2023-08-27 05:26:45,413 INFO L82 GeneralOperation]: Start removeDead. Operand has 687 places, 811 transitions, 1766 flow [2023-08-27 05:26:45,608 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 682 places, 805 transitions, 1754 flow [2023-08-27 05:26:45,608 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:26:45,608 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 682 places, 805 transitions, 1754 flow [2023-08-27 05:26:45,608 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 682 places, 805 transitions, 1754 flow [2023-08-27 05:26:45,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 682 places, 805 transitions, 1754 flow [2023-08-27 05:26:49,566 INFO L124 PetriNetUnfolderBase]: 2572/13028 cut-off events. [2023-08-27 05:26:49,567 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-27 05:26:49,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15405 conditions, 13028 events. 2572/13028 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 126646 event pairs, 1291 based on Foata normal form. 0/10601 useless extension candidates. Maximal degree in co-relation 8054. Up to 2304 conditions per place. [2023-08-27 05:26:51,054 INFO L119 LiptonReduction]: Number of co-enabled transitions 484380 [2023-08-27 05:26:58,761 INFO L134 LiptonReduction]: Checked pairs total: 1148142 [2023-08-27 05:26:58,761 INFO L136 LiptonReduction]: Total number of compositions: 686 [2023-08-27 05:26:58,764 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:26:58,766 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;@558f3fad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:26:58,766 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:26:58,874 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:26:58,875 INFO L124 PetriNetUnfolderBase]: 276/1025 cut-off events. [2023-08-27 05:26:58,875 INFO L125 PetriNetUnfolderBase]: For 309/309 co-relation queries the response was YES. [2023-08-27 05:26:58,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:26:58,875 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:26:58,875 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:26:58,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:26:58,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1438550241, now seen corresponding path program 1 times [2023-08-27 05:26:58,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:26:58,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536758150] [2023-08-27 05:26:58,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:26:58,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:26:58,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:26:58,899 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:26:58,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:26:58,916 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:26:58,916 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:26:58,916 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:26:58,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 05:26:58,916 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:26:58,917 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:26:58,917 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:26:58,917 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-27 05:26:58,949 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-27 05:26:58,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 746 places, 882 transitions, 1934 flow [2023-08-27 05:27:07,352 INFO L124 PetriNetUnfolderBase]: 5417/25219 cut-off events. [2023-08-27 05:27:07,353 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-27 05:27:08,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30425 conditions, 25219 events. 5417/25219 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 279894 event pairs, 3084 based on Foata normal form. 0/20699 useless extension candidates. Maximal degree in co-relation 15391. Up to 5120 conditions per place. [2023-08-27 05:27:08,180 INFO L82 GeneralOperation]: Start removeDead. Operand has 746 places, 882 transitions, 1934 flow [2023-08-27 05:27:08,567 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 741 places, 876 transitions, 1922 flow [2023-08-27 05:27:08,567 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:27:08,567 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 741 places, 876 transitions, 1922 flow [2023-08-27 05:27:08,568 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 741 places, 876 transitions, 1922 flow [2023-08-27 05:27:08,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 741 places, 876 transitions, 1922 flow [2023-08-27 05:27:16,928 INFO L124 PetriNetUnfolderBase]: 5416/25213 cut-off events. [2023-08-27 05:27:16,928 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-27 05:27:17,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30419 conditions, 25213 events. 5416/25213 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 280176 event pairs, 3084 based on Foata normal form. 0/20698 useless extension candidates. Maximal degree in co-relation 15385. Up to 5120 conditions per place. [2023-08-27 05:27:19,913 INFO L119 LiptonReduction]: Number of co-enabled transitions 587880 [2023-08-27 05:27:27,436 INFO L134 LiptonReduction]: Checked pairs total: 1536005 [2023-08-27 05:27:27,436 INFO L136 LiptonReduction]: Total number of compositions: 756 [2023-08-27 05:27:27,438 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:27:27,438 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;@558f3fad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:27:27,438 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:27:27,596 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:27:27,596 INFO L124 PetriNetUnfolderBase]: 377/1357 cut-off events. [2023-08-27 05:27:27,596 INFO L125 PetriNetUnfolderBase]: For 469/469 co-relation queries the response was YES. [2023-08-27 05:27:27,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:27:27,596 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:27:27,596 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:27:27,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:27:27,596 INFO L85 PathProgramCache]: Analyzing trace with hash -649129442, now seen corresponding path program 1 times [2023-08-27 05:27:27,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:27:27,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987420429] [2023-08-27 05:27:27,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:27:27,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:27:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:27:27,614 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:27:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:27:27,631 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:27:27,631 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:27:27,631 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:27:27,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 05:27:27,631 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:27:27,631 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:27:27,631 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:27:27,631 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-27 05:27:27,668 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-27 05:27:27,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 805 places, 953 transitions, 2104 flow [2023-08-27 05:27:45,908 INFO L124 PetriNetUnfolderBase]: 11589/49948 cut-off events. [2023-08-27 05:27:45,908 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-27 05:27:50,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61312 conditions, 49948 events. 11589/49948 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 619228 event pairs, 7181 based on Foata normal form. 0/41292 useless extension candidates. Maximal degree in co-relation 30403. Up to 11264 conditions per place. [2023-08-27 05:27:50,502 INFO L82 GeneralOperation]: Start removeDead. Operand has 805 places, 953 transitions, 2104 flow [2023-08-27 05:27:51,920 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 800 places, 947 transitions, 2092 flow [2023-08-27 05:27:51,920 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:27:51,920 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 800 places, 947 transitions, 2092 flow [2023-08-27 05:27:51,920 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 800 places, 947 transitions, 2092 flow [2023-08-27 05:27:51,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 800 places, 947 transitions, 2092 flow [2023-08-27 05:28:11,042 INFO L124 PetriNetUnfolderBase]: 11588/49942 cut-off events. [2023-08-27 05:28:11,042 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-27 05:28:13,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61306 conditions, 49942 events. 11588/49942 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 619225 event pairs, 7181 based on Foata normal form. 0/41291 useless extension candidates. Maximal degree in co-relation 30397. Up to 11264 conditions per place. [2023-08-27 05:28:17,564 INFO L119 LiptonReduction]: Number of co-enabled transitions 701316 [2023-08-27 05:28:26,689 INFO L134 LiptonReduction]: Checked pairs total: 1863214 [2023-08-27 05:28:26,689 INFO L136 LiptonReduction]: Total number of compositions: 834 [2023-08-27 05:28:26,690 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:28:26,690 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;@558f3fad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:28:26,690 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:28:26,921 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:28:26,921 INFO L124 PetriNetUnfolderBase]: 506/1821 cut-off events. [2023-08-27 05:28:26,921 INFO L125 PetriNetUnfolderBase]: For 713/713 co-relation queries the response was YES. [2023-08-27 05:28:26,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:28:26,921 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:28:26,921 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:28:26,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:28:26,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1693168454, now seen corresponding path program 1 times [2023-08-27 05:28:26,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:28:26,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583805760] [2023-08-27 05:28:26,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:28:26,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:28:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:28:26,942 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:28:26,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:28:26,959 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:28:26,959 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:28:26,959 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:28:26,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 05:28:26,960 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:28:26,960 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:28:26,960 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:28:26,960 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-27 05:28:27,002 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-27 05:28:27,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 864 places, 1024 transitions, 2276 flow [2023-08-27 05:29:05,858 INFO L124 PetriNetUnfolderBase]: 24929/100277 cut-off events. [2023-08-27 05:29:05,858 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-27 05:29:15,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124968 conditions, 100277 events. 24929/100277 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1495. Compared 1375517 event pairs, 16398 based on Foata normal form. 0/83389 useless extension candidates. Maximal degree in co-relation 61288. Up to 24576 conditions per place. [2023-08-27 05:29:15,140 INFO L82 GeneralOperation]: Start removeDead. Operand has 864 places, 1024 transitions, 2276 flow [2023-08-27 05:29:18,235 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 859 places, 1018 transitions, 2264 flow [2023-08-27 05:29:18,235 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:29:18,236 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 859 places, 1018 transitions, 2264 flow [2023-08-27 05:29:18,236 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 859 places, 1018 transitions, 2264 flow [2023-08-27 05:29:18,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 859 places, 1018 transitions, 2264 flow [2023-08-27 05:30:00,485 INFO L124 PetriNetUnfolderBase]: 24928/100271 cut-off events. [2023-08-27 05:30:00,486 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-27 05:30:10,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124962 conditions, 100271 events. 24928/100271 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1495. Compared 1375310 event pairs, 16398 based on Foata normal form. 0/83388 useless extension candidates. Maximal degree in co-relation 61282. Up to 24576 conditions per place. [2023-08-27 05:30:22,402 INFO L119 LiptonReduction]: Number of co-enabled transitions 824688 [2023-08-27 05:30:34,085 INFO L134 LiptonReduction]: Checked pairs total: 2183706 [2023-08-27 05:30:34,085 INFO L136 LiptonReduction]: Total number of compositions: 884 [2023-08-27 05:30:34,087 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:30:34,088 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;@558f3fad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:30:34,088 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:30:34,429 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:30:34,429 INFO L124 PetriNetUnfolderBase]: 730/2527 cut-off events. [2023-08-27 05:30:34,429 INFO L125 PetriNetUnfolderBase]: For 1089/1089 co-relation queries the response was YES. [2023-08-27 05:30:34,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:30:34,430 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 05:30:34,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:30:34,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:30:34,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1153909211, now seen corresponding path program 1 times [2023-08-27 05:30:34,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:30:34,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304294827] [2023-08-27 05:30:34,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:30:34,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:30:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:30:34,479 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:30:34,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:30:34,502 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:30:34,503 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:30:34,503 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:30:34,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 05:30:34,503 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:30:34,506 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:30:34,508 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:30:34,508 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-27 05:30:34,555 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-27 05:30:34,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 923 places, 1095 transitions, 2450 flow